PROFIS REBAR MENU TAB...The Results pane shows the code provisions used to calculate the lap splice...

PROFIS REBAR MENU TAB

The PROFIS Rebar Menu tab offers the following options:

Project options: select the language, code provisions and calculation units for a project. New project: select a project corresponding to a post-installed reinforcing bar application. Open project: open an existing project that has previously been saved. Save as: create a file for a project and save it to a folder. Design report: open the report for a current project. More: access links to other PROFIS software, links to product information, and links to Hilti On Line.

Project Options Language Users can select two languages for use with the software. PROFIS Rebar defaults to English for design using U.S. and Canadian code provisions.

Canadian users may opt to select French in lieu of English.

Project Options Region PROFIS Rebar performs calculations using the provisions of either U.S. or Canadian codes. Select United States for calculations performed per the development and splice provisions of ACI 318-11 Chapter 11, Chapter 12 or Chapter 21.

Select Canada for calculations performed per the development and splice provisions of CSA A23.3-14 Chapter 11, Chapter 12 or Chapter 21.

Project Options Unit PROFIS Rebar performs calculations using either fractional or SI units. When United States is selected for the design region, the software defaults to fractional units. Calculations will be performed using ACI 318-11 fractional values and code parameters.

If United States is selected for the design region and Metric is selected for the units, calculations will be performed using ACI 318-11 code parameters and the results converted into values having SI units.

When Canada is selected for the design region, the software defaults to SI units. Calculations will be performed using CSA A23.3-14 metric values and code parameters.

If Canada is selected for the design region and Fractional is selected for the units, calculations will be performed using CSA A23.3-14 code parameters and the results converted into fractional values.

New project Design method PROFIS Rebar users can select two design methods. One method utilizes the development and splice provisions of a particular code. The other method is based on an alternative design concept for shear dowels. When users select ACI 318-11 for the design method, calculations can be performed for five options: Lap splice, Starter bars, Shear dowels, Special moment frame and Special structural wall. Each option corresponds to a typical reinforcing bar application. Calculations will be based on the development and splice provisions of ACI 318-11 Chapter 11, Chapter 12 or Chapter 21. When users select CSA A23.3-14 for the design method, calculations can be performed for the same five options noted above, but based on the development and splice provisions of CSA A23.3-14 Chapter 11, Chapter 12 or Chapter 21.

The other design method that can be selected in PROFIS Rebar is specific to calculations for shear dowel applications. When users select Hilti, shear friction calculations are performed using an alternative design that will be referred to in this Design Guide as the “Hilti Method”. Calculations are based on research by Palieraki, et. al. The equations and parameters used with the Hilti Method are given in the Post-Installed Reinforcing Bar Guide for Hilti North America (PIR Guide). Reference Section 6.6 – Design of Shear Dowels. Click on this link to access PIR Guide: Post-Installed Reinforcing Bar Guide.

http://submittals.us.hilti.com/PIR_Guide/

Open project Select the option Open project to open a file previously saved in a folder on your computer.

Save as Select the option Save as to save a current project. PROFIS Rebar will default to the Downloads folder on your computer when this option is selected; however, files can be saved to any folder.

Design report A design report can be created once all relevant data necessary to perform calculations has been entered. Design reports can be accessed by the Design report option in the Menu tab, or they can be accessed via the Calculation tab.

More This option permits PROFIS Rebar users to access other PROFIS software, access Hilti On Line websites, and obtain information about Hilti SafeSetTM technology.

Hilti design software.

Hilti On Line links.

PROFIS REBAR LAP SPLICE OPTION

Opening a Lap Splice Project Click on the Menu tab and select New project. Highlight and click on the option titled Lap splice. Selecting a Design method If ACI 318-11 has been selected for the design method, calculations will be performed using the development and splice provisions of ACI 318-11, Chapter 12. If CSA A23.3-14 has been selected for the design method, calculations will be performed using the development and splice provisions of CSA A23.3-14, Chapter 12.

Lap Splice Main Screen View When the lap splice option is selected, the following main screen will appear. Lap splice tabs appear above this screen. Reference the section for each lap splice tab for more information on how to select parameters and input data relevant to a particular tab.

Lap Splice Main Screen View - Products pane Use the Products pane to select a Hilti adhesive and post-installed reinforcing bar type for lap splicing with a cast-in-place reinforcing bar. Options for selecting a post-installed bar size and grade correspond to the rebar portfolio given in the adhesive product Evaluation Service Report.

Design per ACI 318-11.

Design per CSA A23.3-14.

Click on the top star next to the product photo to access the ICC-ES Evaluation Service Report for that product.

Click on the bottom star next to the product photo to access the Hilti On Line page containing information for that product. If United States has been selected as the region, the Hilti On Line page for Hilti U.S. will be accessed. If Canada has been selected as the region, the Hilti On Line page for Hilti Canada will be accessed. Refer to the Design guide section titled Menu tab – Project Options for information on how to select a region.

Lap Splice Main Screen View – Application pane The Application pane located in the center view of the main screen illustrates the parameters utilized when splicing a post-installed reinforcing bar to an existing cast-in-place bar. Post-installed bars will be shown in red. Parameters relative to spacing and edge distance for both post-installed bars and cast-in-place bars are shown in the illustration. Definitions for each parameter are given below the illustration. Reference the ICC-ES Evaluation Service Report (ESR) for minimum edge distance and spacing requirements relative to post-installed bars. These requirements must be followed for both design and installation of the post-installed reinforcing bars. The parameter definitions also note additional checks that must be made by the user in order to satisfy the necessary ACI 318-11 (or CSA A23.3-14) design and/or installation requirements. The Messages pane informs users about violations with respect to ESR minimum spacing, edge distance or concrete thickness.

Lap splice length is defined as ld,SPI. This parameter, as shown in the screen illustration, corresponds to the value calculated per ACI 318-11 Section 12.15 (tension) or Section 12.16 (compression), and CSA A23.3-14 Clause 12.15 (tension) or Clause 12.16 (compression). Cast- in-place bars are assumed to have a minimum end cover, which is defined as c1 in the illustration. The value for c1 is input by the user. The total embedment for a post-installed bar spliced to an existing bar is defined in the illustration by the parameter le. The value for le calculated by PROFIS Rebar equals ld,SPI + c1.

Lap Splice Main Screen View - Messages pane The Messages pane informs users about required data input, installation parameters and violations with respect to geometry or installation parameters. Data relevant to calculating a lap splice length in either tension or compression per ACI 318-11 Chapter 12 or CSA A23.3-14 Chapter 12 must be input before PROFIS Rebar can perform calculations. The Messages pane will prompt users to input the relevant data. Minimum spacing and edge distance requirements for post-installed bars are given in the ICC-ES Evaluation Service Report (ESR) for the Hilti adhesive products in the PROFIS Rebar portfolio. If a spacing or edge distance value has been input that is less than the minimum value given in the ESR, the Messages pane will note the required minimum value. PROFIS Rebar will not perform calculations until the values input for spacing and edge distance satisfy the minimum requirements given in the ESR.

Lap Splice Main Screen View - Results pane The Results pane shows the code provisions used to calculate the lap splice length, and the calculation results. PROFIS Rebar will not perform calculations until all relevant data required to perform calculations has been input, and all geometry requirements have been satisfied. Refer to the Messages pane if no information is shown in the Results pane.

The code being used to perform lap splice calculations, and the ICC-ES Evaluation Service Report corresponding to the adhesive product that has been selected will be noted in the Results pane. The calculated lap splice length and the required post-installed bar embedment (drilling length) will also be noted. Drilling length corresponds to the parameter le shown in the lap splice illustration on the main screen.

No information is shown. Check the Messages pane for information about required data input, or geometry violations.

= le → ld,SPI + c1 = le → ld,SPI + c1

Lap Splice Base Material tab The lap splice Base material tab offers the following options:

Cracked Concrete PROFIS Rebar assumes cracked concrete conditions for lap splice applications.

Concrete Compressive Strength Pre-set values for concrete compressive strength can be selected by clicking on the dropdown above the box titled Compr. str. f’c . The value selected will be shown in the box.

Concrete compressive strengths other than the pre-set values can be selected by clicking on Custom in the dropdown above the box titled Compr. str. f’c . Type the desired value in the box. The range of concrete compressive strength values that can be used in PROFIS Rebar is limited to: 2500 psi (17.2 MPa) < f’c < 8000 psi (55.1 MPa) per Section 5.0 - CONDITIONS FOR USE in the ICC-ES Evaluation Service Report (ESR) for the adhesive product. If a concrete compressive strength less than 2500 psi (17.2 MPa) is input, PROFIS Rebar will default to the minimum permissible compressive strength of 2500 psi (17.2 MPa). If a concrete compressive strength greater than 8000 psi (55.1 MPa) is input, PROFIS Rebar will default to the maximum permissible compressive strength of 8000 psi (55.1 MPa). Go to the Design Guide section titled Lap Splice Main Screen View - Products pane for information on how to access an ESR.

Design using ACI 318-11 provisions.

Design using CSA A23.3-14 provisions.



Lightweight Concrete Option – ACI 318-11 design PROFIS Rebar defaults to normal weight concrete (λa = 1.0) for lap splice calculations.

Highlight and click on the icon titled Lightweight concrete to perform lap splice calculations for lightweight concrete conditions. PROFIS Rebar defaults to λa = 0.75 per ACI 318-11 Section 12.2.4 (d) when this option is selected. The option to input alternate values for λa or to input a splitting tensile strength value (fct) is not available in PROFIS Rebar.

Lightweight Concrete Option – CSA A23.3-14 design PROFIS Rebar defaults to normal-density concrete (k3 = 1.0) for lap splice calculations.

Highlight and click on the icon titled Lightweight concrete to perform lap splice calculations for low-density concrete conditions. PROFIS Rebar defaults to k3 = 1.3 per CSA A23.3-14 Clause 12.2.4 (c) when this option is selected. The option to input alternate values for k3 is not available in PROFIS Rebar.

Service Temperatures There are two parameters for Service temperature in PROFIS Rebar: Base material temp. corresponds to the concrete temperature at the time the reinforcing bar is being post- installed. Adhesive temp. corresponds to the adhesive temperature at the time the reinforcing bar is being post- installed. Reference the Instructions For Use (IFU) in the adhesive product ICC-ES Evaluation Service Report (ESR) for the range of permissible concrete temperatures relative to that adhesive. Reference the Design Guide section titled Lap Splice Main Screen View - Products pane for information on how to access product ESRs. Reference the adhesive product information available via Hilti On Line for the range of permissible installation temperatures relative to that adhesive. Reference the Design Guide section titled Lap Splice Main Screen View - Products pane for information on how to access Hilti On-Line information for a product. PROFIS Rebar defaults to the following service temperatures each time a new lap splice application is opened.

Inputting a service temperature value outside the range permitted for the adhesive product that has been selected results in a message showing the permissible range for that product. PROFIS Rebar will not perform calculations until the service temperature values input are within the permissible range.

Design per ACI 318-11. Design per CSA A23.3-14.



Installation Parameters – Drilling Method PROFIS Rebar permits various drilling options to be selected for post-installing reinforcing bars. Click on the dropdown next to the header titled Drilling method to select the desired drilling option. Other than the option compressed air, the drilling options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Lap Splice Main Screen View - Products pane for information on how to access product ESR’s.

The drilling option compressed air pertains to holes drilled using percussive rock drills. Section 3.4 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE notes the following features associated with holes drilled using percussive rock drills: “Rock drills offer speed and efficiency and produce a rough hole surface that is suitable for bond, but the larger impact energy associated with rock drills may increase the tendency for damage in the concrete member, particularly if used in applications with small edge distance or reduced backside cover. Rock drills typically require larger edge distances/member thickness (see Section 3.3). For applications involving rock drilled holes, contact Hilti.” Compressed air drilling is not included as an option in the ESR’s for the Hilti adhesive anchors in the PROFIS Rebar portfolio; however, it is a common installation method. As noted in the text above, contact Hilti to discuss applications involving holes drilled using percussive rock drills. This Hilti North America POST-INSTALLED REINFORCING BAR GUIDE can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide to view or download the brochure. Hilti Post-Installed Reinforcing Bar Guide

drilling methods for HIT-RE 500-SD

drilling methods for HIT-HY 200

https://www.us.hilti.com/rebar


Installation Parameters – Base material PROFIS Rebar permits selection of parameters corresponding to the concrete condition for the drilled hole. Click on the dropdown next to the header titled Base material to select the desired hole condition. The hole condition options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Lap Splice Main Screen View - Products pane for information on how to access product ESR’s.

Installation Parameters – End Cover Cast-in-place bars are assumed to have a minimum end cover, which is defined as c1 in the illustration on the main screen. The value for c1 is input by the user. A tool tip notes cover requirements for the code that has been selected.

Design per ACI 318-11 has been selected. Reference Section 7.7.1.

Design per CSA A23.3-14 has been selected. Reference Clause 7.9.

Installation Parameters – Tie Reinforcement The option to consider tie reinforcement when performing lap splice calculations is only relevant for compression lap splices. If this option is selected for a compression lap splice; per ACI 318-11 Section 12.3.3(b) and CSA A23.2-14 Clause 12.3.3(b), PROFIS Rebar will apply a factor of 0.75 to the lap splice value calculated per ACI 318-11 Section 12.3.2. (CSA A23.3-14 Clause 12.3.2).

Design per ACI 318-11 has been selected.

Design per CSA A23.3-14 has been selected.

Lap Splice Loads tab The lap splice Loads tab offers the following options:

Type of Splice – Tension Lap Splice PROFIS Rebar performs calculations for tension and compression lap splices. Click on the dropdown and select Tension lap splice to perform calculations per ACI 318-11 Section 12.15 (United States selected as region) or CSA A23.3-14 Clause 12.15 (Canada selected as region).

PROFIS Rebar defaults to Class B splice when Tension lap splice is selected. Class B splice calculations will be performed per ACI 318-11 Section 12.15.1 (United States selected as region) or per CSA A23.3-14 Clause 12.15.1 (Canada selected as region).

When Class A splice is selected calculations will be performed per ACI 318-11 Section 12.15.2 (United States selected as region) or per CSA A23.3-14 Clause 12.15.2 (Canada selected as region).

Type of Splice – Compression Lap Splice Click on the dropdown and select Compression lap splice to perform calculations per ACI 318-11 Section 12.16 (United States selected as region) or CSA A23.3-14 Clause 12.16 (Canada selected as region). The options to select Class A or Class B splices will be grayed-out since these parameters are not relevant to compression lap splice calculations.

Load Condition - Static PROFIS Rebar defaults to Static design when a lap splice project is opened. Calculations will be performed per ACI 318-11 Chapter 12 (United States selected as region) or CSA A23.3-14 Chapter 12 (Canada selected as region). Variable concrete compressive strengths can be input when Static design is selected.


Load Condition - Seismic When Seismic design is selected, the concrete compressive strength will be limited to 2500 psi (17.25 N/mm2). Adhesive product testing per the ICC-ES Acceptance Criteria AC308 limits the compressive strength that can be used for seismic calculations to this value. This limitation is noted in the adhesive product ICC-ES Evaluation Service Report (ESR). Reference the Design Guide section titled Lap Splice Main Screen View - Products pane for information on how to access product ESR’s. The option to input a compressive strength other than 2500 psi (17.25 N/mm2) will be grayed-out when Seismic design is selected.


Lap Splice – Tab for Cast-In-Place Reinforcement The tab titled Reinforcement cast-in permits data and parameters to calculate a tension or compression lap splice for cast-in-place reinforcing bars to be input.



Excess Reinforcement The Excess reinforcement option is not available when Tension lap splice has been selected for the design option. Per ACI 318-11 Section12.15.1 (CSA A23.3-14 Clause 12.15.1), the excess reinforcement provisions of Section 12.2.5 (Clause 12.2.5) cannot be utilized for tension lap splices. The Excess reinforcement option will be grayed-out when Tension lap splice has been selected.

The Excess reinforcement option is available when Compression lap splice has been selected for the design option. When bars of different sizes are being spliced in compression, ACI 318-11 Section12.16.2 (CSA A23.3-14 Clause 12.16.2) requires calculation of the compression development length for the larger bar size, and the compression splice length for the smaller bar size. PROFIS Rebar permits the provisions of Section 12.3.3(a) (Clause 12.3.3(a)) to be utilized for calculating the development length in compression (ldc) of the larger bar size when dissimilar bar sizes are being spliced in compression. Click on the Excess reinforcement option and input the desired steel areas. The ratio (As,req / As,prov) will be applied to ldc for the larger bar size.

Tension lap splice design per ACI 318-11 has been selected.

Tension lap splice design per CSA A23.3-14 has been selected.

Compression lap splice design per ACI 318-11 has been selected.

Compression lap splice design per CSA A23.3-14 has been selected.

Bar Diameter Select a cast-in-bar size via the dropdown for the heading Diameter db. The cast-in-bar sizes available in PROFIS Rebar correspond to the post-installed bar sizes listed in the ICC-ES Evaluation Service Report for each adhesive product in the PROFIS Rebar portfolio.



Bar Yield Strength Input a cast-in-bar yield strength in the box titled Rebar fy. The cast-in-bar yield strengths in PROFIS Rebar are limited to a maximum value of 60,000 psi (400 N/mm2).



ACI 318-11 Modification Factors (ψ - factors) ACI 318-11 tension lap splices require calculation of a tension development length (ld) per Equation (12-1) in Section 12.2.3. The factor ψt is used to modify the development length if there is more than 12 inches of fresh concrete placed below horizontal reinforcement. Reference Section 12.2.4(a). PROFIS Rebar defaults to ψt = 1.0 when Lap splice is selected as a project option. If more than 12 inches of concrete is assumed to have been placed below horizontal reinforcement at the time the concrete was poured, the value for ψt can be increased per Section 12.2.4(a). PROFIS Rebar uses ψt = 1.3 if more than 12 inches of fresh concrete is assumed to have been placed below cast-in horizontal reinforcement. Click on the dropdown under the heading Reinforcement location factor ψt to select a ψt value = 1.3 The factor ψe is used to modify the development length if cast-in coated bars have been installed. Reference Section 12.2.4(b). PROFIS Rebar defaults to ψe = 1.0 when Lap splice is selected as a project option. If cast-in coated bars are used, the value for ψe can be increased per Section 12.2.4(b). PROFIS Rebar assumes ψe = 1.5 if the option Rebar coated ψe is selected.

The factor ψs is dependent on the rebar diameter. Per Section 12.2.4(c), when calculating a development length in tension (ld), PROFIS Rebar uses ψs = 0.8 for bar sizes #3 < db < #6, and ψs = 1.0 for bar sizes #7 < db < #10. The value for ψs will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Lap Splice Calculation Tab – Design Report for information on the PROFIS Rebar report for lap splices.

default ψt and ψe values

ψt and ψe modifications per 12.2.4

ψe = 1.0

ψe = 1.5

CSA A23.3-14 Modification Factors (k - factors) CSA A23.3-14 tension lap splices require calculation of a tension development length (ld) per Equation (12-1) in Clause 12.2.2.

The factor k1 is used to modify the development length if there is more than 300 mm of fresh concrete placed below horizontal reinforcement. Reference Clause 12.2.4(a). PROFIS Rebar defaults to k1 = 1.0 when Lap splice is selected as a project option. PROFIS Rebar uses k1 = 1.3 if more than 300 mm of concrete is assumed to have been placed below cast-in horizontal reinforcement at the time the concrete was poured. Click on the dropdown under the heading Reinforcement location factor k1 to select a k1 value = 1.3 The factor k2 is used to modify the development length if cast-in coated bars have been installed. Reference Clause 12.2.4(b). PROFIS Rebar defaults to k2 = 1.0 when Lap splice is selected as a project option. If cast-in coated bars are used, the value for k2 can be increased per Clause 12.2.4. PROFIS Rebar assumes k2 = 1.5 if the option Rebar coated k2 is selected.

The factor k3 is dependent on the concrete density being assumed. Reference the Design Guide section titled Lightweight Concrete Option – CSA A23.3-14 design for more information about this parameter. The factor k4 is dependent on the rebar diameter. Per Clause 12.2.4(d), when calculating a development length in tension (ld), PROFIS Rebar uses k4 = 0.8 for bar sizes 10M < db < 20M, and k4 = 1.0 for bar sizes 25M < db < 30M. The value for k4 will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Lap Splice Calculation Tab – Design Report for information on the PROFIS Rebar report for lap splices.

default k1 and k2 values

k1 and k2 modifications per 12.2.4

k2 = 1.0

k2 = 1.5

Bar Spacing and Cover Requirements ACI 318-11 Provisions ACI 318-11 tension lap splices require calculation of a tension development length (ld) per Equation (12-1) in Section 12.2.3. The parameter cb is defined with respect to reinforcing bars as: “….the smallest of the side cover, the cover over the bar….measured to the center of the bar…., or one-half the center-to-center spacing of the bars…” Enter the value corresponding to the center-to-center spacing of the cast-in-place reinforcing bars via the box titled: sb,CIP . Enter the value corresponding to the smallest cast-in-place reinforcing bar cover (measured from the center of the bar) via the box titled: cb,CIP . PROFIS Rebar will use these values to calculate the parameter cb. The value for cb shown in the report for cast-in bar calculations = MINIMUM {cb,CIP : sb,CIP /2 } per Section 12.2.3, and will be used via the confinement term (cb + Ktr)/db to calculate the tension development length of the cast-in-bars per Equation (12-1). PROFIS Rebar uses the same value for Ktr in the development length calculations for both cast- in-place bars and post-installed bars; however, the value calculated for the confinement term (cb + Ktr)/db will be specific to the parameters cb and db for each bar type. Refer to the Design Guide section titled Lap Splice – Tab for Post-Installed Reinforcement - Transverse Reinforcement Calculations for information on how PROFIS Rebar calculates the parameter Ktr and the confinement term (cb + Ktr)/db.

Bar Spacing and Cover Requirements CSA A23.3-14 Provisions CSA A23.3-14 tension lap splices require calculation of a tension development length (ld) per Equation (12-1) in Clause 12.2.2. The parameter dcs is defined with respect to reinforcing bars as: “(a) the distance from the closest concrete surface to the centre of the bar being developed; or (b) two-thirds the centre-to-centre spacing of the bars being developed.” Enter the value corresponding to the center-to-center spacing of the cast-in-place reinforcing bars via the box titled: sb,CIP . Enter the value corresponding to the smallest cast-in-place reinforcing bar cover (measured from the center of the bar) via the box titled: cb,CIP . PROFIS Rebar will use these values to calculate the parameter dcs. The value for dcs shown in the report for cast-in bar calculations = MINIMUM {cb,CIP : 2sb,CIP /3 } per Clause 12.2.2, and will be used via the confinement term (dcs + Ktr).to calculate the tension development length of the cast-in-bars per Equation (12-1). PROFIS Rebar uses the same value for Ktr in the development length calculations for both cast- in-place bars and post-installed bars; however, the value calculated for the confinement term (dcs + Ktr) will be specific to the parameter dcs determined for each bar type. Refer to the Design Guide section titled Lap Splice – Tab for Post-Installed Reinforcement - Transverse Reinforcement Calculations for information on how PROFIS Rebar calculates the parameter Ktr and the confinement term (dcs + Ktr).

Lap Splice – Tab for Post-Installed Reinforcement The tab titled Reinforcement post-installed permits data and parameters to calculate a tension or compression lap splice for post-installed reinforcing bars to be input.



Excess Reinforcement The Excess reinforcement option is not available when Tension lap splice has been selected for the design option. Per ACI 318-11 Section12.15.1 (CSA A23.3-14 Clause 12.15.1), the excess reinforcement provisions of Section 12.2.5 (Clause 12.2.5) cannot be utilized for tension lap splices. The Excess reinforcement option will be grayed-out when Tension lap splice has been selected.

The Excess reinforcement option is available when Compression lap splice has been selected for the design option. When bars of different sizes are being spliced in compression, ACI 318-11 Section12.16.2 (CSA A23.3-14 Clause 12.16.2) requires calculation of the compression development length for the larger bar size, and the compression splice length for the smaller bar size. PROFIS Rebar permits the provisions of Section 12.3.3(a) (Clause 12.3.3(a)) to be utilized for calculating the development length in compression (ldc) of the larger bar size when dissimilar bar sizes are being spliced in compression. Click on the Excess reinforcement option and input the desired steel areas. The ratio (As,req / As,prov) will be applied to ldc for the larger bar size.

Tension lap splice design per ACI 318-11 has been selected.

Tension lap splice design per CSA A23.3-14 has been selected.

Compression lap splice design per ACI 318-11 has been selected.

Compression lap splice design per CSA A23.3-14 has been selected.

Bar Diameter and Yield Strength Use the Products pane to select a Hilti adhesive and post-installed reinforcing bar for lap splicing with a cast-in-place reinforcing bar. Options for selecting a post-installed bar size and grade correspond to the rebar portfolio given in the adhesive product Evaluation Service Report (ESR).



Click on the top star to access the ESR.

Click on the top star to access the ESR.

ACI 318-11 Modification Factors (ψ - factors) ACI 318-11 tension lap splices require calculation of a tension development length (ld) per Equation (12-1) in Section 12.2.3. The factor ψt is used to modify the development length if there is more than 12 inches of fresh concrete placed below cast-in horizontal reinforcement. Reference Section 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. Reference Modification Factors in the Design Guide section titled Lap Splice – Tab for Cast-In-Place Reinforcement for information about how PROFIS Rebar applies ψt for cast-in-place reinforcing bars. The factor ψe is used to modify the development length if coated bars have been post-installed. Reference Section 12.2.4(b). PROFIS Rebar defaults to ψe = 1.0 when Lap splice is selected as a project option. If post-installed coated bars are used, the value for ψe can be increased per Section 12.2.4. PROFIS Rebar assumes ψe = 1.5 if the option Rebar coated ψe is selected.

The factor ψs is dependent on the rebar diameter. Per Section 12.2.4(c). When calculating a tension development length (ld), PROFIS Rebar uses ψs = 0.8 for bar sizes #3 < db < #6, and ψs = 1.0 for bar sizes #7 < db < #10. The value for ψs will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Lap Splice Calculation Tab – Design Report for information on the PROFIS Rebar report for lap splices.

ψe = 1.0

ψe = 1.5

CSA A23.3-14 Modification Factors (k - factors) CSA A23.3-14 tension lap splices require calculation of a tension development length (ld) per Equation (12-1) in Clause 12.2.2.

The factor k1 is used to modify the development length if there is more than 300 mm of fresh concrete placed below cast-in horizontal reinforcement. Reference Clause 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. Reference Modification Factors in the Design Guide section titled Lap Splice – Tab for Cast-In-Place Reinforcement for information about how PROFIS Rebar applies k1 for cast-in-place reinforcing bars. The factor k2 is used to modify the development length if coated bars have been installed. Reference Clause 12.2.4(b). PROFIS Rebar defaults to k2 = 1.0 when Lap splice is selected as a project option. If coated bars are used, the value for k2 can be increased per Clause 12.2.4. PROFIS Rebar assumes k2 = 1.5 if the option Rebar coated k2 is selected.

The factor k3 is dependent on the concrete density being assumed. Reference the Design Guide section titled Lightweight Concrete Option – CSA A23.3-14 design for more information about this parameter. The factor k4 is dependent on the rebar diameter. Per Clause 12.2.4(d), when calculating a development length in tension (ld), PROFIS Rebar uses k4 = 0.8 for bar sizes 10M < db < 20M, and k4 = 1.0 for bar sizes 25M < db < 30M. The value for k4 will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Lap Splice Calculation Tab – Design Report for information on the PROFIS Rebar report for lap splices.

k2 = 1.0 k2 = 1.5

Bar Spacing and Cover Requirements ACI 318-11 Provisions The confinement term in ACI 318-11 Equation (12-1) is defined as: The parameter cb is defined with respect to reinforcing bars as: “….the smallest of the side cover, the cover over the bar….measured to the center of the bar…., or one-half the center-to-center spacing of the bars…” Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . PROFIS Rebar will use these values to calculate the parameter cb. The value for cb shown in the report for post-installed bar calculations = MINIMUM {cb,PI : sb,PI /2 } per Section 12.2.3, and will be used to calculate the confinement term. Refer to the Design Guide section titled Lap Splice – Tab for Post-Installed Reinforcement – Transverse Reinforcement Calculations for information on how PROFIS Rebar calculates the parameter Ktr and the confinement term (cb + Ktr)/db. The parameter sb,PI,CIP corresponds to the center-to-center spacing between post-installed bars and cast-in-place bars. The minimum values for sb,PI, sb,PI,CIP , and cb,PI are given in the ICC-ES Evaluation Service Report (ESR) for each adhesive product in the PROFIS Rebar portfolio. Reference the Design Guide section titled Lap Splice Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Lap Splice Main Screen View – Application pane for more information.

cb + Ktr db

Bar Spacing and Cover Requirements CSA A23.3-14 Provisions The confinement term in CSA A23.3-14 Equation (12-1) is defined as: (dcs + Ktr). The parameter dcs is defined with respect to reinforcing bars as: “(a) the distance from the closest concrete surface to the centre of the bar being developed; or (b) two-thirds the centre-to-centre spacing of the bars being developed.” Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . PROFIS Rebar will use these values to calculate the parameter dcs. The value for dcs shown in the report for post-installed bar calculations = MINIMUM {cb,PI : 2sb,PI /3 } per Clause 12.2.2, and will be used to calculate the tension development length of the post- installed bars per Equation (12-1). Refer to the Design Guide section titled Lap Splice – Tab for Post-Installed Reinforcement – Transverse Reinforcement Calculations for information on how PROFIS Rebar calculates the parameter Ktr and the confinement term (dcs + Ktr). The parameter sb,PI,CIP corresponds to the center-to-center spacing between post-installed bars and cast-in-place bars. The minimum values for sb,PI, sb,PI,CIP , and cb,PI are given in the ICC-ES Evaluation Service Report (ESR) for each adhesive product in the PROFIS Rebar portfolio. Reference the Design Guide section titled Lap Splice Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Lap Splice Main Screen View – Application pane for more information.

Transverse Reinforcement Calculations ACI 318-11 Provisions ACI 318-11 tension lap splices require calculation of a tension development length (ld) per Equation (12-1) in Section 12.2.3.

The parameter Ktr is defined by Equation (12-2) as: PROFIS Rebar uses the same value for Ktr in the development length calculations for both cast- in-place bars and post-installed bars; however, the value calculated for the confinement term (cb + Ktr)/db will be specific to the parameters cb and db for each bar type. In order to consider existing transverse reinforcement in the concrete member PROFIS Rebar users can either input a value for Ktr, or they can allow the software to calculate Ktr. PROFIS Rebar will default to Ktr = 0. Highlight and click on the option Ktr to input a value for this parameter.

PROFIS Rebar will use this value to calculate the confinement term (cb + Ktr)/db. Any value for Ktr can be input (including Ktr = 0); however, the value for the confinement term that will be shown in the PROFIS Rebar report will be limited to a maximum value of 2.5 per Section 12.2.3. PROFIS Rebar users can also allow the software to calculate Ktr. Highlight and click on the option Ktr,calc and input values corresponding to the area of cast-in-place transverse reinforcement (Atr), the cast-in-place transverse reinforcement bar spacing (s) and the number of post-installed bars being developed along the plane of splitting (n). PROFIS Rebar will use this data to calculate Ktr. The calculated value shown below the box titled Ktr will be used to calculate the confinement term (cb + Ktr)/ db, with a limiting value for the confinement term of 2.5 per Section 12.2.3.

40 Atr s n Ktr = (12-2)

Transverse Reinforcement Calculations CSA A23.3-14 Provisions CSA A23.3-14 tension lap splices require calculation of a tension development length (ld) per Equation (12-1) in Clause 12.2.2.

The parameter Ktr is defined as: PROFIS Rebar uses the same value for Ktr in the development length calculations for both cast- in-place bars and post-installed bars; however, the value calculated for the confinement term (dcs + Ktr) will be specific to the parameter dcs and the bar diameter for each bar type. In order to consider existing transverse reinforcement in the concrete member PROFIS Rebar users can either input a value for Ktr, or they can allow the software to calculate Ktr. PROFIS Rebar will default to Ktr = 0. Highlight and click on the option Ktr to input a value for this parameter.

PROFIS Rebar will use this value to calculate the confinement term (dcs + Ktr). Any value for Ktr can be input (including Ktr = 0); however, the value for the confinement term that will be shown in the PROFIS Rebar report will be limited to a maximum value of 2.5 dcs per Clause 12.2.2. PROFIS Rebar users can also allow the software to calculate Ktr. Highlight and click on the option Ktr,calc and input values corresponding to the area of cast-in-place transverse reinforcement (Atr), the cast-in-place transverse reinforcement bar spacing (s) and the number of post-installed bars being developed along the plane of splitting (n). PROFIS Rebar will use this data to calculate Ktr. The calculated value shown below the box titled Ktr will be used to calculate the confinement term (dcs + Ktr), with a limiting value for the confinement term of 2.5 dcs per Clause 12.2.2.

Atr fyt 10.5sn Ktr =

Lap Splice Calculation tab The lap splice Calculation tab offers the following options:

Approval

Click on this link to access the ICC-ES Evaluation Service Report for the adhesive product that has been selected for the application.

Online technical library

Click on this link to access the Hilti Rebar Design Center.

Link to Rebar Design Center for U.S. users: U.S. Rebar Design Center Link to Rebar Design Center for U.S. users: Canadian Rebar Design Center


https://www.hilti.ca/rebar

Design Report

Click on this icon to obtain a design report. Users can input project information relative to the lap splice project. The field titled Report name must be filled out in order to generate a report.

Design Report – Part 1 Input data

Part 1 of the report includes the following information: - Hilti adhesive product that has been selected. - post-installed reinforcing bar size and type. - ICC-ES Evaluation Service Report for the adhesive product. - Report issue date, and date when the report expires. Data used for PROFIS Rebar calculations will be based on the data contained in the report having the issued/valid dates shown. - Design method references the code provisions being used to perform calculations. PROFIS Rebar users can select design per ACI 318-11 or per CSA A23.3-14. - Base material conditions selected for the application. Parameters include cracked concrete, compressive strength, assumed adhesive temperature at the time of installation, assumed concrete temperature at the time of installation. - Installation parameters include the drilling method and the drilled hole condition. Hilti SafeSetTM technology is a proprietary system. Reference the Design Guide section titled Lap Splice Main Screen View - Products pane regarding how to access product information. - Type of splice that has been calculated: Class A or Class B. Reference ACI 318-11 Section 12.15 (CSA A23.3-14 Clause 12.15) for tension lap splice provisions and ACI 318-11 Section 12.16 (CSA A23.3-14 Clause 12.16) for compression lap splice provisions. Compression lap splices will be noted as “Class B” in the report; however, the calculations will be per ACI 318-11 Section 12.16 (CSA A23.3-14 Clause 12.16). - If seismic design provisions are selected for lap splice calculations PROFIS Rebar will use seismic-specific data given in the ICC-ES Evaluation Service Report for the adhesive product. Refer to the Design Guide sections titled Special Moment Frame Option and Special Structural Wall Option for information about PROFIS Rebar calculations for two seismic applications defined in ACI 318-11 Chapter 21 and CSA A23.3-14 Chapter 21. - PROFIS Rebar defaults to normal weight concrete for lap splice applications. If ACI 318-11 provisions are being used and normal weight concrete has been selected, the report will show λ → 1.0. If lightweight concrete has been selected, the report will show λ → 0.75. If CSA A23.3-14 provisions are being used and normal-density concrete has been selected, the report will show Lightweight concrete – no. If low-density concrete has been selected, the report will show Lightweight concrete – yes.

Part 2 of the report shows a generalized illustration of a lap splice application.

Part 3 – Post-installed reinforcement – splice in tension This section of the report includes information specific to post-installed bar lap splice calculations. The results in Part 3.5 show the calculated tension lap splice length because the post-installed bar size is less than the cast-in-place bar size. Reference ACI 318-11 Section 12.15.3. Additional explanations are shown in red. When Canada is selected as the region, design reports will reference CSA A23.3-14 provisions.

→ sb,PI → sb,PI,CIP → cb,PI

→ for post-installed bar → for post-installed bar

→ for post-installed bar

→ ACI 318-11 Section 12.2.3

→ Class B splice → Minimum splice requirement per Section 12.15.1.

MIN{cb,PI :sb,PI /2}

ACI 318-11 Section 12.2.3

Minimum splice requirement per Section 12.15.1.

Eq. (12-1) Class B splice Per ACI 318-11 Section 12.15.3, the results for the post-installed bar show the calculated lap splice length because the post-installed bar size is less than the cast-in bar size.

→ Atr

Part 4 – Cast-in reinforcement – splice in tension This section of the report includes information specific to the cast-in-place bar lap splice calculations. The results in Part 4.5 show the calculated tension development length because the cast-in bar size is greater than the post-installed bar size. Reference ACI 318-11 Section 12.15.3. Additional explanations are shown in red. When Canada is selected as the region, design reports will reference CSA A23.3-14 provisions.

→ for cast-in bar → for cast-in bar

→ for cast-in bar → sb,CIP

→ cb,CIP → ψt

→ ACI 318-11 Section 12.2.3

→ Minimum splice requirement per Section 12.15.1.


ACI 318-11 Section 12.2.3 Minimum splice requirement per Section 12.15.1.

Eq. (12-1) Per ACI 318-11 Section 12.15.3, the results for the cast-in bar show the calculated development length because the cast-in bar size is greater than the post-installed bar size.

Part 5 – Cast-in reinforcement – splice in tension This section of the report shows the final calculation results and the hole depth that must be drilled for the post-installed bar

The required splice length (= 29 in) is controlled by the development length of the cast-in bar. ld,CIP = 29 in per Eq. (12-1), bar size = #7 ld,splice,PI = 27 in per 12.15 1 Class B splice, bar size = #4 Per ACI 318-11 Section 12.15.3, the lap splice length for this application will be MAX { ld,splice,PI : ld,CIP } because the post-installed bar size is less than the cast-in bar size. The drilled hole depth for the post-installed bar = splice length + end cover = 29 in + 2 in = 31 in

Specification Text

Click on this icon to view suggested specification text for the adhesive product and post-installed reinforcing bar size that have been selected. HIT-RE 500-SD has been selected to post-install an ASTM A 615 Grade 60 #4 bar. The hole will be drilled using Hilti SafeSetTM technology.

The specification text can be copied and pasted onto a drawing detail.

General Notes Text

Click on this icon to view suggested general notes text for post-installing reinforcing bars using Hilti adhesive products. The text can be copied and pasted into a project specification, or into project structural general notes.

Videos

Click on this icon to view videos that explain post-installed reinforcing bar installation using Hilti adhesive products.

PROFIS REBAR STARTER BAR OPTION

Opening a Starter Bar Project Click on the Menu tab and select New project. Highlight and click on the option titled Starter bars. Selecting a Design method If ACI 318-11 has been selected for the design method, starter bar calculations will be performed using the development and splice provisions of ACI 318-11, Chapter 12. If CSA A23.3-14 has been selected for the design method, starter bar calculations will be performed using the development and splice provisions of CSA A23.3-14, Chapter 12.

Starter Bar Main Screen View When the starter bar option is selected, the following main screen will appear. Starter bar tabs appear above this screen. Reference the section for each starter bar tab for more information on how to select parameters and input data relevant to a particular tab.

Starter Bar Main Screen View - Products pane Use the Products pane to select a Hilti adhesive system and post-installed reinforcing bar type. Options for selecting a post-installed bar size and grade correspond to the rebar portfolio given in the adhesive product Evaluation Service Report.



Starter Bar Main Screen View – Application pane The Application pane located in the center view of the main screen illustrates the parameters utilized when post-installing a reinforcing bar for a starter bar application. Post-installed bars will be shown in red. Parameters relative to spacing and edge distance for post-installed bars are shown in the illustration. Definitions for each parameter are given below the illustration. Reference the ICC-ES Evaluation Service Report (ESR) for minimum edge distance and spacing requirements relative to post-installed bars. These requirements must be followed for both design and installation of the post-installed reinforcing bars. The parameter definitions also note additional checks that must be made by the user in order to satisfy the necessary ACI 318-11 (or CSA A23.3-14) design and/or installation requirements. The Messages pane informs users about violations with respect to ESR minimum spacing, edge distance or concrete thickness. The embedment required to develop the starter bar in tension is defined as ld. This parameter, as shown in the screen illustration, corresponds to the value calculated per ACI 318-11 Section 12.2 or CSA A23.3-14 Clause 12.2. Post-installed bars are assumed to have a minimum end cover, which is defined as c1 in the illustration. The value for c1 is input by the user. The total embedment for a post-installed starter bar is defined in the illustration by the parameter ld.

Starter Bar Main Screen View - Messages pane The Messages pane informs users about required data input, and violations with respect to geometry or installation parameters. Data relevant to calculating a development length in either tension or compression per ACI 318-11 Chapter 12 or CSA A23.3-14 Chapter 12 must be input before PROFIS Rebar can perform calculations. The Messages pane will prompt users to input the relevant data. Minimum spacing and edge distance requirements for post-installed bars are given in the ICC-ES Evaluation Service Report (ESR) for the Hilti adhesive products in the PROFIS Rebar portfolio. If a spacing or edge distance value has been input that is less than the minimum value given in the ESR, the Messages pane will note the required minimum value. PROFIS Rebar will not perform calculations until the values input for spacing and edge distance satisfy the minimum requirements given in the ESR.

Starter Bar Main Screen View - Results pane The Results pane shows the code provisions used to calculate the starter bar development length, and the calculation results. PROFIS Rebar will not perform calculations until all relevant data required to perform calculations has been input, and all geometry requirements have been satisfied. Refer to the Messages pane if no information is shown in the Results pane.

The code being used to perform starter bar calculations, and the ICC-ES Evaluation Service Report corresponding to the adhesive product that has been selected will be noted in the Results pane. The calculated development length and the required post-installed bar embedment (drilling length) will also be noted. Drilling length for starter bars corresponds to the development length ld shown in the illustration on the main screen.

= ld





= ld

Starter Bar Base Material tab The starter bar Base material tab offers the following options:

Cracked Concrete PROFIS Rebar assumes cracked concrete conditions for starter bar applications.




Concrete compressive strengths other than the pre-set values can be selected by clicking on Custom in the dropdown above the box titled Compr. str. f’c . Type the desired value in the box. The range of concrete compressive strength values that can be used in PROFIS Rebar is limited to: 2500 psi (17.2 MPa) < f’c < 8000 psi (55.1 MPa) per Section 5.0 - CONDITIONS FOR USE in the ICC-ES Evaluation Service Report (ESR) for the adhesive product. If a concrete compressive strength less than 2500 psi (17.2 MPa) is input, PROFIS Rebar will default to the minimum permissible compressive strength of 2500 psi (17.2 MPa). If a concrete compressive strength greater than 8000 psi (55.1 MPa) is input, PROFIS Rebar will default to the maximum permissible compressive strength of 8000 psi (55.1 MPa). Go to the Design Guide section titled Starter Bar Main Screen View - Products pane for information on how to access an ESR.





Lightweight Concrete Option – ACI 318-11 design PROFIS Rebar defaults to normal weight concrete (λa = 1.0) for starter bar calculations.

Highlight and click on the icon titled Lightweight concrete to perform starter bar calculations for lightweight concrete conditions. PROFIS Rebar defaults to λa = 0.75 per ACI 318-11 Section 12.2.4 (d) when this option is selected. The option to input alternate values for λa or to input a splitting tensile strength value (fct) is not available in PROFIS Rebar.

Lightweight Concrete Option – CSA A23.3-14 design PROFIS Rebar defaults to normal-density concrete (k3 = 1.0) for starter bar calculations.

Highlight and click on the icon titled Lightweight concrete to perform starter bar calculations for low-density concrete conditions. PROFIS Rebar defaults to k3 = 1.3 per CSA A23.3-14 Clause 12.2.4 (c) when this option is selected. The option to input alternate values for k3 is not available in PROFIS Rebar.

Service Temperatures There are two parameters for Service temperature in PROFIS Rebar: Base material temp. corresponds to the concrete temperature at the time the reinforcing bar is being post- installed. Adhesive temp. corresponds to the adhesive temperature at the time the reinforcing bar is being post- installed. Reference the Instructions For Use (IFU) in the adhesive product ICC-ES Evaluation Service Report (ESR) for the range of permissible concrete temperatures relative to that adhesive. Reference the Design Guide section titled Starter Bar Main Screen View - Products pane for information on how to access product ESRs. Reference the adhesive product information available via Hilti On Line for the range of permissible installation temperatures relative to that adhesive. Reference the Design Guide section titled Starter Bar Main Screen View - Products pane for information on how to access Hilti On-Line information for a product. PROFIS Anchor defaults to the following service temperatures each time a new starter bar application is opened.

Inputting a service temperature value outside the range permitted for the adhesive product that has been selected results in a message showing the permissible range for that product. PROFIS Anchor will not perform calculations until the service temperature values input are within the permissible range.




Installation Parameters – Drilling Method PROFIS Rebar permits various drilling options to be selected for post-installing reinforcing bars. Click on the dropdown next to the header titled Drilling method to select the desired drilling option. Other than the option compressed air, the drilling options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access product ESR’s.






Installation Parameters – Base material PROFIS Rebar permits selection of parameters corresponding to the concrete condition for the drilled hole. Click on the dropdown next to the header titled Base material to select the desired hole condition. The hole condition options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Starter Bar Main Screen View - Products pane for information on how to access product ESR’s.

Installation Parameters – Member thickness and End Cover Concrete member thickness (h) is input by the user via the box titled Member thickness h. End cover for the starter bar (c1) is input by the user via the box titled End cover c1. A tool tip notes the cover requirements given in the code that has been selected.

PROFIS Rebar checks the sum of the calculated development length (ld) for a starter bar plus the concrete cover from the end of the bar (c1) versus the concrete member thickness (h). If ld + c1 < h, PROFIS Rebar will show the calculated development length (ld) in the Results pane, and a report can be generated. If ld + c1 > h, PROFIS Rebar will not show calculation results, and a message in the Messages pane will note the reason(s) no results are being shown. A report cannot be generated until ld + c1 < h.

ld + c1 < h → report can be generated

ld + c1 > h → report cannot be generated

development length ld = 21 in


Installation Parameters – Tie Reinforcement ACI 318-11 Design The option to consider tie reinforcement when performing starter bar calculations is only relevant for calculating a compression development length (ldc). If this option is selected, per ACI 318-11 Section 12.3.3(b), PROFIS Rebar will apply a factor of 0.75 to the value for ldc calculated per ACI 318-11 Section 12.3.2. The option to select tie reinforcement will be grayed-out when calculating a tension development length (ld).

CSA A23.3-14 Design The option to consider tie reinforcement when performing starter bar calculations is only relevant for calculating a compression development length (ldc). If this option is selected, per CSA A23.3-14 Clause 12.3.3(b), PROFIS Rebar will apply a factor of 0.75 to the value for ldc calculated per CSA A23.3-14 Clause 12.3.2. The option to select tie reinforcement will be grayed- out when calculating a tension development length (ld).

ldc calculations grayed-out for tension (ld) calculations

ldc calculations grayed-out for tension (ld) calculations

Starter Bar Loads tab The starter bar Loads tab offers the following options:

Load Condition – Tension starter bar PROFIS Rebar performs starter bar development length calculations for tension and compression. Click on the dropdown and select Tension starter bar to perform tension development length calculations per ACI 318-11 Section 12.2 (U.S. design) or CSA A23.3-14 Clause 12.2 (Canadian design).

Load Condition – Compression starter bar Click on the dropdown and select Compression starter bar to perform compression development length calculations per ACI 318-11 Section 12.3 (U.S. design) or CSA A23.3-14 Clause 12.3 (Canadian design).

Load Condition - Static PROFIS Rebar defaults to Static design when a starter bar project is opened. Calculations will be performed per ACI 318-11 Chapter 12 (U.S. design) or CSA A23.3-14 Chapter 12 (Canadian design). Variable concrete compressive strengths can be input when Static design is selected.


Load Condition - Seismic When Seismic design is selected, the concrete compressive strength will be limited to 2500 psi (17.5 MPa). Adhesive testing per the ICC-ES AC308 Acceptance Criteria limits the compressive strength that can be used for seismic calculations to this minimum value. This limitation is noted in the adhesive product ICC-ES Evaluation Service Report (ESR). Reference the Design Guide section titled Starter Bar Main Screen View - Products pane for information on how to access product ESR’s.


Starter Bar – Tab for Post-Installed Reinforcement The tab titled Reinforcement post-installed permits data and parameters to calculate a tension or compression development length for post-installed reinforcing bars to be input.



Excess Reinforcement The Excess reinforcement option permits a reduced development length to be used. If United States has been selected as the region, calculations will be performed per ACI 318-11 Section 12.2.5. If Canada has been selected as the region, calculations will be performed per CSA A23.3-14 Clause 12.2.5. Refer to the Design guide section titled Menu tab – Project Options for information on how to select a region. Click on the Excess reinforcement option and input the desired steel areas. The ratio (As,req /As,prov) will be applied to the calculated development length.

Design per CSA A23.3-14. Design per ACI 318-11.

ACI 318-11 Modification Factors (ψ - factors) PROFIS Rebar calculates starter bar tension development lengths (ld) using Equation (12-1), which is given in ACI 318-11 Section 12.2.

The factor ψt is used to modify the development length if there is more than 12 inches of fresh concrete placed below horizontal reinforcement. Reference Section 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. The factor ψe is used to modify the development length if coated bars will be post-installed. Reference Section 12.2.4(b). PROFIS Rebar defaults to Rebar uncoated ψe → ψe = 1.0 when Starter bar is selected as a project option. If coated bars are used, the value for ψe can be increased per Section 12.2.4. PROFIS Rebar assumes ψe = 1.5 if the option Rebar coated ψe is selected.

The factor ψs is dependent on the rebar diameter. Per Section 12.2.4(c), when calculating a starter bar development length in tension (ld), PROFIS Rebar uses ψs = 0.8 for bar sizes #3 < db < #6, and ψs = 1.0 for bar sizes #7 < db < #10. The value for ψs will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Starter Bar Calculation Tab – Design Report for information on the PROFIS Rebar report for starter bars.

ψe = 1.0

ψe = 1.5

CSA A23.3-14 Modification Factors (k - factors) PROFIS Rebar calculates starter bar tension development lengths (ld) using Equation (12-1), which is given in CSA A23.3-14 Clause 12.2.2.

The factor k1 is used to modify the development length if there is more than 300 mm of fresh concrete placed below the development length. Reference Clause 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. The factor k2 is used to modify the development length if coated bars will be post-installed. Reference Clause 12.2.4(b). PROFIS Rebar defaults to Rebar uncoated k2 → k2 = 1.0 when Starter bar is selected as a project option. If coated bars are used, the value for k2 can be increased per Clause 12.2.4. PROFIS Rebar assumes k2 = 1.5 if the option Rebar coated k2 is selected.

The factor k3 is dependent on the concrete density being assumed. Reference the Design Guide section titled Lightweight Concrete Option – CSA A23.3-14 design for more information about this parameter. The factor k4 is dependent on the rebar diameter. Per Clause 12.2.4(d), when calculating a starter bar development length in tension (ld), PROFIS Rebar uses k4 = 0.8 for bar sizes 10M < db < 20M, and k4 = 1.0 for bar sizes 25M < db < 30M. The value for k4 will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Starter Bar Calculation Tab – Design Report for information on the PROFIS Rebar report for starter bars.

k2 = 1.0

k2 = 1.5

Bar Spacing and Cover Requirements per ACI 318-11 PROFIS Rebar calculates starter bar tension development lengths (ld) using Equation (12-1), which is given in ACI 318-11 Section 12.2.

The parameter Ktr is defined by Equation (12-2) as: PROFIS Rebar does not consider existing transverse reinforcement in the concrete member when calculating ld for post-installed starter bars, and assumes Ktr equals zero. The term in Equation (12-1) defined as (cb + Ktr)/ db can be designated the “confinement term”. The maximum value permitted by ACI 318-11 Section 12.2.3 for the confinement term equals 2.5. PROFIS Rebar assumes (cb + Ktr)/ db equals 2.5 when calculating a starter bar tension development length; thereby not considering the cover parameter (cb) or the bar diameter (db) for calculating a confinement term value. The parameter cb is defined in ACI 318-11 with respect to reinforcing bars as: “….the smallest of the side cover, the cover over the bar….measured to the center of the bar…., or one-half the center-to-center spacing of the bars…” Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . A value for cb will be shown in the PROFIS Rebar report corresponding to MINIMUM {cb,PI : sb,PI /2} per ACI 318-11 Section 12.2.3, but this parameter is not considered in the PROFIS Rebar tension development calculation for starter bars. The values input for sb,PI and cb,PI are, however, checked by PROFIS Rebar against the minimum permissible values for sb,PI and cb,PI given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. The Messages pane informs users about violations with respect to ESR minimum spacing and edge distance requirements. The ESR requirements should also be checked by the user against ACI 318-11 minimum requirements. Reference the Design Guide section titled Starter Bar Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Starter Bar Main Screen View – Application pane for more information.

40 Atr sn Ktr = (12-2)

Bar Spacing and Cover Requirements per CSA A23.3-14 PROFIS Rebar calculates starter bar tension development lengths (ld) using Equation (12-1), which is given in CSA A23.3-14 Clause 12.2.2.

The parameter Ktr is defined as: PROFIS Rebar does not consider existing transverse reinforcement in the concrete member when calculating ld for post-installed starter bars, and assumes Ktr equals zero. The term in Equation (12-1) defined as (dcs + Ktr) can be designated the “confinement term”. The maximum value permitted by Clause 12.2.2 for the confinement term equals 2.5db. PROFIS Rebar assumes (dcs + Ktr) equals 2.5db when calculating a starter bar tension development length; thereby not considering the cover parameter (dcs) or the parameter Ktr for calculating a confinement term value. The confinement term in CSA A23.3-14 Equation (12-1) is defined as: (dcs + Ktr). The parameter dcs is defined in CSA A23.3-14 as: “(a) the distance from the closest concrete surface to the centre of the bar being developed; or (b) two-thirds the centre-to-centre spacing of the bars being developed.” Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . A value for dcs will be shown in the PROFIS Rebar report corresponding to MINIMUM {cb,PI : 2sb,PI /3} per CSA A23.3-14 Clause 12.2.2, but this parameter is not considered in the PROFIS Rebar tension development calculation for starter bars. The values input for sb,PI and cb,PI are, however, checked by PROFIS Rebar against the minimum permissible values for sb,PI and cb,PI given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. The Messages pane informs users about violations with respect to ESR minimum spacing and edge distance requirements. The ESR requirements should also be checked by the user against CSA A23.3-14 minimum requirements. Reference the Design Guide section titled Starter Bar Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Starter Bar Main Screen View – Application pane for more information.


Starter Bar Calculation tab The starter bar Calculation tab offers the following options:

Approval


Design Report

Click on this icon to obtain a design report. Users can input project information relative to the starter bar project. The field titled Report name must be filled out in order to generate a report.

Design Report – Part 1 Input data ACI 318-11 parameters are shown first. CSA A23.3-14 parameters are shown after “or”.

Part 1 of the report includes the following information: - Hilti adhesive product that has been selected. - post-installed reinforcing bar size and type. - ICC-ES Evaluation Service Report for the adhesive product. - Report issue date, and date when the report expires. Data used for PROFIS Rebar calculations will be based on the data contained in the report having the issued/valid dates shown. - Design method references the code provisions being used to perform calculations. PROFIS Rebar users can select design per ACI 318-11 or per CSA A23.3-14. - Base material conditions selected for the application. Parameters include cracked concrete, compressive strength, assumed adhesive temperature at the time of installation, assumed concrete temperature at the time of installation. - Installation parameters include the drilling method and the drilled hole condition. Hilti SafeSetTM technology is a proprietary system. Reference the Design Guide section titled Starter Bar Main Screen View - Products pane regarding how to access product information. - If seismic design provisions are selected for starter bar calculations PROFIS Rebar will use seismic-specific data given in the ICC-ES Evaluation Service Report for the adhesive product. Refer to the Design Guide sections titled Special Moment Frame Option and Special Structural Wall Option for information about PROFIS Rebar calculations with respect to these specific seismic applications. - PROFIS Rebar defaults to normal weight concrete for starter bar applications. If ACI 318-11 provisions are being used and normal weight concrete has been selected, the report will show λ → 1.0. If lightweight concrete has been selected, the report will show λ → 0.75. If CSA A23.3-14 provisions are being used and normal-density concrete has been selected, the report will show Lightweight concrete – no. If low-density concrete has been selected, the report will show Lightweight concrete – yes.

Part 2 of the report shows a generalized illustration for a starter bar application.

Part 3 – Post-installed reinforcement – anchorage in tension This section of the report includes information specific to post-installed starter bar calculations. Additional explanations are shown in red. When Canada is selected as the region, design reports will reference CSA A23.3-14 provisions.



→ sb,PI → cb,PI

→ ACI 318-11 Section 12.2.3

default value

default value

ld calculated after applying reduction per 12.2.5





ld calculated per Equation (12-1)

Part 4 – Post-installed reinforcement – anchorage in tension This section of the report shows installation parameters for post-installed starter bars.

Specification Text



General Notes Text


Videos


PROFIS REBAR SHEAR DOWEL OPTION PER ACI 318-11 OR CSA A23.3-14

Opening a Shear Dowel Project Click on the Menu tab and select New project. Highlight and click on the option titled Shear Dowels. Selecting a Design method When ACI 318-11 is selected for the design method, calculations will be performed using the shear friction provisions of ACI 318-11 Section 11.6.4 and the development and splice provisions of ACI 318-11, Chapter 12. When CSA A23.3-14 is selected for the design method, calculations will be performed using the shear friction provisions of CSA A23.3-14 Clause 11.5 and the development and splice provisions of CSA A23.3-14, Chapter 12.

Shear Dowels Main Screen View When the shear dowel option is selected, the following main screen will appear. Shear Dowel tabs appear above this screen. Reference the section for each shear dowel tab for more information on how to select parameters and input data relevant to a particular tab.

Shear Dowel Main Screen View - Products pane Use the Products pane to select a Hilti adhesive system and post-installed reinforcing bar type. Options for selecting a post-installed bar size and grade correspond to the rebar portfolio given in the adhesive product Evaluation Service Report.



Shear Dowel Main Screen View – Application pane The Application pane located in the center view of the main screen illustrates parameters utilized for shear dowel calculations and installation. Post-installed bars will be shown in red. Parameters relative to spacing and edge distance for post-installed bars are shown in the illustration. Definitions for each parameter are given below the illustration. Reference the ICC-ES Evaluation Service Report (ESR) for minimum edge distance and spacing requirements relative to post-installed bars. These requirements must be followed for both design and installation of the post-installed reinforcing bars. The parameter definitions also note additional checks that must be made by the user in order to satisfy the necessary ACI 318-11 (or CSA A23.3-14) design and/or installation requirements. The Messages pane informs users about violations with respect to ESR minimum spacing, edge distance or concrete thickness.

Shear friction calculations per ACI 318-11 Section 11.6.4 or CSA A23.3-13 Clause 11.5.1 assume a bar is embedded deep enough to develop it in tension. The parameter (ld), as shown in the screen illustration, corresponds to the ld value calculated per ACI 318-11 Section 12.2 or CSA A23.3-14 Clause 12.2. PROFIS Rebar assumes shear dowels are post-installed into an existing concrete member having a width ww, as shown in the illustration. Post-installed bars are assumed to have a minimum end cover, which is defined as c1 in the illustration. The values for ww and c1 are input by the user. Total embedment for a post-installed shear dowel is defined in the illustration by the parameter ld.

Shear Dowel Main Screen View - Messages pane The Messages pane informs users about required data input, and violations with respect to geometry or installation parameters. Data relevant to calculating a development length in tension per ACI 318-11 Chapter 12 or CSA A23.3-14 Chapter 12 must be input before PROFIS Rebar can perform calculations. The Messages pane will prompt users to input the relevant data. Minimum spacing and edge distance requirements for post-installed bars are given in the ICC-ES Evaluation Service Report (ESR) for the Hilti adhesive products in the PROFIS Rebar portfolio. If a spacing or edge distance value has been input that is less than the minimum value given in the ESR, the Messages pane will note the required minimum value. PROFIS Rebar will not perform calculations until the values input for spacing and edge distance satisfy the minimum requirements given in the ESR.


Shear Dowel Main Screen View - Results pane The Results pane shows the code provisions used to calculate the shear dowel development length, and the calculation results. PROFIS Rebar will not perform calculations until all relevant data required to perform calculations has been input, and all geometry requirements have been satisfied. Refer to the Messages pane if no information is shown in the Results pane.

The code being used to perform shear dowel calculations, and the ICC-ES Evaluation Service Report corresponding to the adhesive product that has been selected will be noted in the Results pane. The calculated development length and the required post-installed bar embedment (drilling length) will also be noted. Drilling length for shear dowels corresponds to the development length ld shown in the illustration on the main screen.

= ld



= ld

Shear Dowel Base Material tab The shear dowel Base material tab offers the following options:

Cracked Concrete PROFIS Rebar assumes cracked concrete conditions for shear dowel applications.




Concrete compressive strengths other than the pre-set values can be selected by clicking on Custom in the dropdown above the box titled Compr. str. f’c . Type the desired value in the box. The range of concrete compressive strength values that can be used in PROFIS Rebar is limited to: 2500 psi (17.2 MPa) < f’c < 8000 psi (55.1 MPa) per Section 5.0 - CONDITIONS FOR USE in the ICC-ES Evaluation Service Report (ESR) for the adhesive product. If a concrete compressive strength less than 2500 psi (17.2 MPa) is input, PROFIS Rebar will default to the minimum permissible compressive strength of 2500 psi (17.2 MPa). If a concrete compressive strength greater than 8000 psi (55.1 MPa) is input, PROFIS Rebar will default to the maximum permissible compressive strength of 8000 psi (55.1 MPa). Go to the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access an ESR.





Lightweight Concrete Option – ACI 318-11 design PROFIS Rebar defaults to normal weight concrete (λa = 1.0) for shear dowel calculations.

Highlight and click on the icon titled Lightweight concrete to perform shear dowel calculations for lightweight concrete conditions. PROFIS Rebar defaults to λa = 0.75 per ACI 318-11 Section 12.2.4 (d) when this option is selected. The option to input alternate values for λa or to input a splitting tensile strength value (fct) is not available in PROFIS Rebar.

Lightweight Concrete Option – CSA A23.3-14 design PROFIS Rebar defaults to normal-density concrete (k3 = 1.0) for shear dowel calculations.

Highlight and click on the icon titled Lightweight concrete to perform shear dowel calculations for low-density concrete conditions. PROFIS Rebar defaults to k3 = 1.3 per CSA A23.3-14 Clause 12.2.4 (c) when this option is selected. The option to input alternate values for k3 is not available in PROFIS Rebar.

Service Temperatures There are two parameters for Service temperature in PROFIS Rebar: Base material temp. corresponds to the concrete temperature at the time the reinforcing bar is being post- installed. Adhesive temp. corresponds to the adhesive temperature at the time the reinforcing bar is being post- installed. Reference the Instructions For Use (IFU) in the adhesive product ICC-ES Evaluation Service Report (ESR) for the range of permissible concrete temperatures relative to that adhesive. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access product ESRs. Reference the adhesive product information available via Hilti On Line for the range of permissible installation temperatures relative to that adhesive. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access Hilti On-Line information for a product. PROFIS Rebar defaults to the following service temperatures each time a new shear dowel application is opened.





Installation Parameters – Drilling Method PROFIS Rebar permits various drilling options to be selected for post-installing reinforcing bars. Click on the dropdown next to the header titled Drilling method to select the desired drilling option. Other than the option compressed air, the drilling options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access product ESR’s.

The drilling option compressed air pertains to holes drilled using percussive rock drills. Section 3.4 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE notes the following features associated with holes drilled using percussive rock drills: “Rock drills offer speed and efficiency and produce a rough hole surface that is suitable for bond, but the larger impact energy associated with rock drills may increase the tendency for damage in the concrete member, particularly if used in applications with small edge distance or reduced backside cover. Rock drills typically require larger edge distances/member thickness (see Section 3.3). For applications involving rock drilled holes, contact Hilti.” Compressed air drilling is not included as an option in the ESR’s for the Hilti adhesive anchors in the PROFIS Rebar portfolio; however, it is a common installation method. As noted in the text above, contact Hilti to discuss applications involving holes drilled using percussive rock drills. This Hilti North America POST-INSTALLED REINFORCING BAR GUIDE can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide to view or download the brochure. Hilti Post-Installed Reinforcing Bar Guide Installation Parameters – Base material PROFIS Rebar permits selection of parameters corresponding to the concrete condition for the drilled hole. Click on the dropdown next to the header titled Base material to select the desired hole condition. The hole condition options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access product ESR’s.





Installation Parameters – Wall Width and End Cover PROFIS Rebar assumes shear dowels are post-installed installed into a concrete wall having width ww. Users input a value for ww via the box titled Wall width w. End cover for the shear dowel (c1) is input by the user via the box titled End cover c1. A tool tip notes the cover requirements given in the code that has been selected.


PROFIS Rebar checks the sum of the calculated development length (ld) for a shear dowel plus the concrete cover from the end of the bar (c1) versus the concrete wall width (ww). If ld + c1 < ww, PROFIS Rebar will show the calculated development length (ld) in the Results pane, and a report can be generated. If ld + c1 > ww, PROFIS Rebar will not show calculation results, and a message in the Messages pane will note the reason(s) no results are being shown. A report cannot be generated until ld + c1 < ww.

ld + c1 < ww → report can be generated

ld + c1 > ww → report cannot be generated


ld + c1 > ww → report cannot be generated


Shear Dowel Loads tab The shear dowel Loads tab offers the following options:

Load Condition - Static PROFIS Rebar defaults to Static design when a shear dowel project is opened. If United States has been selected as the region, calculations will be performed per ACI 318-11 Chapter 12. If Canada has been selected as the region, calculations will be performed per CSA A23.3-14 Chapter 12. Refer to the Design guide section titled Menu tab – Project Options for information on how to select a region. Variable concrete compressive strengths can be input when Static design is selected.

PROFIS Rebar does not offer the option Seismic design for shear dowel design per ACI 318-11 or per CSA A23.3-14. This option will be grayed-out


Shear Dowel – Tab for Post-Installed Reinforcement The tab titled Reinforcement post-installed permits data and parameters to calculate a tension development length for post-installed reinforcing bars to be input.

Excess Reinforcement The Excess reinforcement option permits a reduced development length to be used. If United States has been selected as the region, calculations will be performed per ACI 318-11 Section 12.2.5. If Canada has been selected as the region, calculations will be performed per CSA A23.3-14 Clause 12.2.5. Refer to the Design guide section titled Menu tab – Project Options for information on how to select a region. Click on the Excess reinforcement option and input the desired steel areas. The ratio (As,req /As,prov) will be applied to the calculated development length.



Design per CSA A23.3-14. Design per ACI 318-11.

ACI 318-11 Modification Factors (ψ - factors) PROFIS Rebar calculates a shear dowel tension development lengths (ld) using Equation (12-1), which is given in ACI 318-11 Section 12.2.

The factor ψt is used to modify the development length if there is more than 12 inches of fresh concrete placed below horizontal reinforcement. Reference Section 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. The factor ψe is used to modify the development length if coated bars will be post-installed. Reference Section 12.2.4(b). PROFIS Rebar defaults to Rebar uncoated ψe → ψe = 1.0 when a shear dowel application is opened. If coated bars are used, the value for ψe can be increased per Section 12.2.4. PROFIS Rebar assumes ψe = 1.5 if the option Rebar coated ψe is selected.

The factor ψs is dependent on the rebar diameter. Per Section 12.2.4(c), when calculating a shear dowel development length in tension (ld), PROFIS Rebar uses ψs = 0.8 for bar sizes #3 < db < #6, and ψs = 1.0 for bar sizes #7 < db < #10. The value for ψs will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Shear Dowel Calculation Tab – Design Report for information on the PROFIS Rebar report for shear dowels.

ψe = 1.0

ψe = 1.5

CSA A23.3-14 Modification Factors (k - factors) PROFIS Rebar calculates shear dowel tension development lengths (ld) using Equation (12-1), which is given in CSA A23.3-14 Clause 12.2.2.

The factor k1 is used to modify the development length if there is more than 300 mm of fresh concrete placed below the development length. Reference Clause 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. The factor k2 is used to modify the development length if coated bars will be post-installed. Reference Clause 12.2.4(b). PROFIS Rebar defaults to Rebar uncoated k2 → k2 = 1.0 when a shear dowel application is opened. If coated bars are used, the value for k2 can be increased per Section 12.2.4. PROFIS Rebar assumes k2 = 1.5 if the option Rebar coated k2 is selected.

The factor k3 is dependent on the concrete density being assumed. Reference the Design Guide section titled Lightweight Concrete Option – CSA A23.3-14 design for more information about this parameter. The factor k4 is dependent on the rebar diameter. Per Clause 12.2.4(d), when calculating a shear dowel development length in tension (ld), PROFIS Rebar uses k4 = 0.8 for bar sizes 10M < db < 20M, and k4 = 1.0 for bar sizes 25M < db < 30M. Reference the Design Guide section titled Shear Dowel Calculation Tab – Design Report for information on the PROFIS Rebar report for shear dowels.

k2 = 1.0

k2 = 1.5

Bar Spacing and Cover Requirements ACI 318-11 Section 11.6.4 assumes shear dowels will be developed in tension. PROFIS Rebar calculates a tension development length (ld) for ACI 318-11 shear dowel applications using ACI 318-11 Equation (12-1), which is given in Section 12.2.

The parameter Ktr is defined by Equation (12-2) as: PROFIS Rebar does not consider existing transverse reinforcement in the concrete member when calculating ld for post-installed shear dowels, and assumes Ktr equals zero. The term in Equation (12-1) defined as (cb + Ktr)/ db can be designated the “confinement term”. The maximum value permitted by ACI 318-11 Section 12.2.3 for the confinement term equals 2.5. PROFIS Rebar assumes (cb + Ktr)/ db equals 2.5 when calculating a shear dowel tension development length; thereby not considering the cover parameter (cb) or the bar diameter (db) for calculating a confinement term value. The parameter cb is defined with respect to reinforcing bars as: “….the smallest of the side cover, the cover over the bar….measured to the center of the bar…., or one-half the center-to-center spacing of the bars…” PROFIS Rebar assumes the wall section A-A is oriented on an x/y axis. The parameter sb,PI,X corresponds to the post-installed bar spacing in the horizontal direction (x-direction), and the parameter sb,PI,Y corresponds to the post-installed bar spacing in the vertical direction (y-direction). The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Shear Dowel Main Screen View – Application pane for more information.

40 Atr sn Ktr = (12-2)

Enter values corresponding to the center-to-center spacing of the post-installed reinforcing bars in the x and y directions via the boxes titled: sb,PI,X and sb,PI,y respectively. Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . A value for cb will be shown in the PROFIS Rebar report corresponding to MINIMUM {cb,PI : sb,PI /2} per ACI 318-11 Section 12.2.3, but this parameter is not considered in the PROFIS Rebar tension development calculation for shear dowels.

The values input for sb,PI and cb,PI are, however, checked by PROFIS Rebar against the minimum permissible values for sb,PI and cb,PI given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. The Messages pane informs users about violations with respect to ESR minimum spacing and edge distance requirements. The ESR requirements should also be checked by the user against ACI 318-11 minimum requirements. Reference the Design Guide section titled Shear Dowel Bar Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Shear Dowel Main Screen View – Application pane for more information.

CSA A23.3-14 Section 11.5 assumes shear dowels will be developed in tension. PROFIS Rebar calculates a tension development length (ld) for CSA A23.3-14 shear dowel applications using CSA A23.3-14 Equation (12-1), which is given in Section 12.2.

The parameter Ktr is defined as: PROFIS Rebar does not consider existing transverse reinforcement in the concrete member when calculating ld for post-installed shear dowels, and assumes Ktr equals zero. The term in Equation (12-1) defined as (dcs + Ktr) can be designated the “confinement term”. The maximum value permitted by Clause 12.2.2 for the confinement term equals 2.5db. PROFIS Rebar assumes (dcs + Ktr) equals 2.5db when calculating a shear dowel tension development length; thereby not considering the cover parameter (dcs) or the parameter Kt for calculating a confinement term value. The parameter dcs is defined with respect to reinforcing bars as: “(a) the distance from the closest concrete surface to the centre of the bar being developed; or (b) two-thirds the centre-to-centre spacing of the bars being developed.” PROFIS Rebar assumes the wall section A-A is oriented on an x/y axis. The parameter sb,PI,X corresponds to the post-installed bar spacing in the horizontal direction (x-direction), and the parameter sb,PI,Y corresponds to the post-installed bar spacing in the vertical direction (y-direction). The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Shear Dowel Main Screen View – Application pane for more information.


Enter values corresponding to the center-to-center spacing of the post-installed reinforcing bars in the x and y directions via the boxes titled: sb,PI,X and sb,PI,y respectively. Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . A value for dcs will be shown in the PROFIS Rebar report corresponding to MINIMUM {cb,PI : 2sb,PI /3 } per Clause 12.2.2, but this parameter is not considered in the PROFIS Rebar tension development calculation for shear dowels.

The values input for sb,PI and cb,PI are, however, checked by PROFIS Rebar against the minimum permissible values for sb,PI and cb,PI given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. The Messages pane informs users about violations with respect to ESR minimum spacing and edge distance requirements. The ESR requirements should also be checked by the user against CSA A23.3-14 minimum requirements. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Shear Dowel Main Screen View – Application pane for more information.

Shear Dowel Calculation tab The shear dowel Calculation tab offers the following options:

Approval


Design Report

Click on this icon to obtain a design report. Users can input project information relative to the shear dowel project. The field titled Report name must be filled out in order to generate a report.


Part 1 of the report includes the following information: - Hilti adhesive product that has been selected. - post-installed reinforcing bar size and type. - ICC-ES Evaluation Service Report for the adhesive product. - Report issue date, and date when the report expires. Data used for PROFIS Rebar calculations will be based on the data contained in the report having the issued/valid dates shown. - Design method references the code provisions being used to perform calculations. PROFIS Rebar users can select design per ACI 318-11 or per CSA A23.3-14. - Base material conditions selected for the application. Parameters include cracked concrete, compressive strength, assumed adhesive temperature at the time of installation, assumed concrete temperature at the time of installation. - Installation parameters include the drilling method and the drilled hole condition. Hilti SafeSetTM technology is a proprietary system. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane regarding how to access product information. - Seismic design provisions cannot be selected for shear dowel applications. The design report will indicate “no” for seismic design. Refer to the Design Guide sections titled Special Moment Frame Option and Special Structural Wall Option for information about PROFIS Rebar calculations for other seismic applications. - PROFIS Rebar defaults to normal weight concrete for shear dowel applications. If ACI 318-11 provisions are being used and normal weight concrete has been selected, the report will show λ → 1.0. If lightweight concrete has been selected, the report will show λ → 0.75. If CSA A23.3-14 provisions are being used and normal-density concrete has been selected, the report will show Lightweight concrete – no. If low-density concrete has been selected, the report will show Lightweight concrete – yes.

Part 2 of the report shows a generalized illustration for a shear dowel application.

Part 3 – Post-installed reinforcement – shear friction in tension This section of the report includes information specific to the post-installed shear dowel calculations per ACI 318-11. Additional explanations are shown in red. When Canada is selected as the region, design reports will reference CSA A23.3-14 provisions.


→ sb,PI,X

→ cb,PI

default value

default value



ld calculated per Equation (12-1)

→ sb,PI,Y

ld calculated if no reduction applied per 12.2.5

Part 4 – Post-installed reinforcement – anchorage in tension This section of the report shows installation parameters for post-installed shear dowels.

Specification Text



General Notes Text


Videos


PROFIS REBAR SPECIAL MOMENT FRAME OPTION

Opening a Special Moment Frame Project Click on the Menu tab and select New project. Highlight and click on the option titled Special Moment Frame. Selecting a Design method When ACI 318-11 is selected for the design method, calculations will be performed using the provisions of ACI 318-11, Chapter 21, Section 21.7.5. When CSA A23.3-14 is selected for the design method, calculations will be performed using the provisions of CSA A23.3-14, Chapter 21, Clause 21.5.5.

Special Moment Frame Main Screen View When the special moment frame option is selected, the following main screen will appear. Special moment frame tabs appear above this screen. Reference the section for each special moment frame tab for more information on how to select parameters and input data relevant to a particular tab.

Special Moment Frame Main Screen View - Products pane Use the Products pane to select a Hilti adhesive system and post-installed reinforcing bar type. Options for selecting a post-installed bar size and grade correspond to the rebar portfolio given in the adhesive product Evaluation Service Report.



Special Moment Frame Main Screen View – Application pane The Application pane located in the center view of the main screen illustrates the parameters utilized when post-installing a reinforcing bar for a special moment frame application. Post-installed bars will be shown in red. Parameters relative to spacing and edge distance for both post-installed bars and cast-in-place bars are shown in the illustration. Definitions for each parameter are given below the illustration. Reference the ICC-ES Evaluation Service Report (ESR) for minimum edge distance and spacing requirements relative to post-installed bars. These requirements must be followed for both design and installation of the post-installed reinforcing bars. The parameter definitions also note additional checks that must be made by the user in order to satisfy the necessary ACI 318-11 (or CSA A23.3-14) design and/or installation requirements. The Messages pane informs users about violations with respect to ESR minimum spacing, edge distance or concrete thickness.

The embedment required to develop the post-installed bar in tension is defined as ld. This parameter, as shown in the screen illustration, corresponds to the value calculated per ACI 318- 11 Section 21.7.5 or CSA A23.3-14 Clause 21.5.5.

Special Moment Frame Main Screen View - Messages pane The Messages pane informs users about required data input, and violations with respect to geometry or installation parameters. Data relevant to calculating a development length per ACI 318-11 Chapter 21 or CSA A23.3-14 Chapter 21 must be input before PROFIS Rebar can perform calculations. The Messages pane will prompt users to input the relevant data. Minimum spacing and edge distance requirements for post-installed bars are given in the ICC-ES Evaluation Service Report (ESR) for the Hilti adhesive products in the PROFIS Rebar portfolio. If a spacing or edge distance value has been input that is less than the minimum value given in the ESR, the Messages pane will note the required minimum value. PROFIS Rebar will not perform calculations until the values input for spacing and edge distance satisfy the minimum requirements given in the ESR.


Special Moment Frame Main Screen View - Results pane The Results pane shows the code provisions used to calculate the post-installed bar development length, and the calculation results. PROFIS Rebar will not perform calculations until all relevant data required to perform calculations has been input, and all geometry requirements have been satisfied. Refer to the Messages pane if no information is shown in the Results pane.

The code being used to perform calculations, and the ICC-ES Evaluation Service Report corresponding to the adhesive product that has been selected, will be noted in the Results pane. The parameter Development length corresponds to the value calculated per the provisions of ACI 318-11 Section 21.7.5 or CSA A23.3 Clause 21.5.5.




Special Moment Frame Base Material tab The special moment frame Base material tab offers the following options:

Cracked Concrete PROFIS Rebar assumes cracked concrete conditions for special moment frame applications.



Concrete Compressive Strength The ICC-ES Evaluation Service Reports for Hilti adhesives limit the concrete compressive strength that can be used for seismic design of post-installed reinforcing bars to a value of 2500 psi (17.2 N/mm2). Reference Part 4.2.4 in ESR-3187 (HIT-HY 200) and ESR-2322 (HIT-RE 500-SD). Go to the Design Guide section titled Special Moment Frame Main Screen View - Products pane for information on how to access approvals for Hilti Adhesive products. PROFIS Rebar defaults to a concrete compressive strength value of 2500 psi (17.2 N/mm2) for special moment frame rebar calculations, and the value shown in the box titled Compr. str. f’c will be grayed-out to indicate that no other compressive strength besides the default value can be input.

ACI 318-11 provisions. CSA A23.3-14 provisions.

Lightweight Concrete Option – ACI 318-11 design PROFIS Rebar defaults to normal weight concrete (λa = 1.0) for special moment frame calculations.

Highlight and click on the icon titled Lightweight concrete to perform calculations for lightweight concrete conditions. Per Section 21.7.5.1, PROFIS Rebar calculates the maximum of 10db, 7 1/2 in and 1.25ldh when this option is selected.

Lightweight Concrete Option – CSA A23.3-14 design PROFIS Rebar defaults to normal-density concrete (k3 = 1.0) to perform calculations for special moment frames.

Highlight and click on the icon titled Lightweight concrete to perform calculations for low-density concrete conditions. Per Clause 21.5.5.3, PROFIS Rebar calculates 1.25ldh when this option is selected.

Service Temperatures There are two parameters for Service temperature in PROFIS Rebar: Base material temp. corresponds to the concrete temperature at the time the reinforcing bar is being post- installed. Adhesive temp. corresponds to the adhesive temperature at the time the reinforcing bar is being post- installed. Reference the Instructions For Use (IFU) in the adhesive product ICC-ES Evaluation Service Report (ESR) for the range of permissible concrete temperatures relative to that adhesive. Reference the Design Guide section titled Special Moment Frame Main Screen View - Products pane for information on how to access product ESRs. Reference the adhesive product information available via Hilti On Line for the range of permissible installation temperatures relative to that adhesive. Reference the Design Guide section titled Special Moment Frame Main Screen View - Products pane for information on how to access Hilti On-Line information for a product. PROFIS Rebar defaults to the following service temperatures each time a special moment frame application is opened.





Installation Parameters – Drilling Method PROFIS Rebar permits various drilling options to be selected for post-installing reinforcing bars. Click on the dropdown next to the header titled Drilling method to select the desired drilling option. Other than the option compressed air, the drilling options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Special Moment Frame Main Screen View - Products pane for information on how to access product ESR’s.






Installation Parameters – Base material PROFIS Rebar permits selection of parameters corresponding to the concrete condition for the drilled hole. Click on the dropdown next to the header titled Base material to select the desired hole condition. The hole condition options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Special Moment Frame Main Screen View - Products pane for information on how to access product ESR’s.

Special Moment Frame Loads tab The special moment frame Loads tab offers the following options:

Load Condition - Seismic PROFIS Rebar defaults to Seismic design when a special moment frame project is opened. If United States has been selected as the region, calculations will be performed per ACI 318-11 Chapter 21. If Canada has been selected as the region, calculations will be performed per CSA A23.3-14 Chapter 21. Refer to the Design guide section titled Menu tab – Project Options for information on how to select a region. The option Static design will be grayed-out.

The concrete compressive strength will be limited to a value of 2500 psi (17.25 N/mm2) for PROFIS Rebar special moment frame applications. Adhesive testing per the ICC-ES AC308 Acceptance Criteria limits the compressive strength that can be used for seismic calculations to this minimum value. This limitation is noted in the adhesive product ICC-ES Evaluation Service Report (ESR). The value shown in the box titled Compr. str. f’c will be grayed-out to indicate that no other compressive strength besides the default value can be input. Reference the Design Guide section titled Special Moment Frame Main Screen View - Products pane for information on how to access product ESR’s.


Special Moment Frame – Tab for Post-Installed Reinforcement The tab titled Reinforcement post-installed permits data entry for parameters needed to calculate a tension development length per the provisions of ACI 318-11 Section 21.7.5 or per the provisions of CSA A23.3-14 Clause 21.5.5.


Design per CSA A23.3-

ACI 318-11 Modification Factors (ψ - factors) PROFIS Rebar calculates tension development length for a special moment frame using Equation (21-6), which is given in ACI 318-11 Section 21.7.5.1. ψt is not used in this calculation, and PROFIS Rebar defaults to a value of 1.0 for this parameter. Section 21.7.5.2(a) applies a factor of 2.5 to the value calculated per Equation (21-6). PROFIS Rebar uses this factor to calculate the tension development length for post-installed bars in a special moment frame. Per Section 21.7.5.4, the development length is modified per the factor ψe defined in Section 12.2.4 if coated bars are used. PROFIS Rebar defaults to Rebar uncoated ψe → ψe = 1.0 when a special moment frame application is opened. If the option Rebar coated ψe corresponding to the use of coated bars is selected, PROFIS Rebar assumes ψe = 1.5.

ψe = 1.0

ψe = 1.5

ldh = (fy db) / (65 √f’c)

ld = 2.5 [(fy db) / (65 √f’c)]

CSA A23.3-14 Modification Factors (k - factors) PROFIS Rebar calculates tension development length for a special moment frame using Equation (21-8), which is given in CSA A23.2-14 Clause 21.5.5.2. k1 is not used in this calculation, and PROFIS Rebar defaults to a value of 1.0 for this parameter. Clause 21.5.5.4(a) applies a factor of 2.5 to the value calculated per Equation (21-8). PROFIS Rebar uses this factor to calculate the tension development length for post-installed bars in a special moment frame. Per Clause 21.5.5.7, the factor k2 is used to modify the development length if coated bars will be post-installed in the special moment frame. PROFIS Rebar defaults to k2 = 1.0 when a special moment frame application is opened. If coated bars are used, the value for k2 can be increased per Clause12.2.4(b). PROFIS Rebar assumes k2 = 1.5 if the option Rebar coated k2 is selected.

k2 = 1.0

k2 = 1.5

ld = 2.5 [0.2(fy /√f’c)db]

ldh = 0.2 (fy /√f’c) db

Bar Spacing and Cover Requirements Parameters for post-installed bar spacing and edge distance must satisfy the requirements given in the ICC-ES Evaluation Service Report (ESR) for each adhesive in the PROFIS Rebar portfolio. Minimum spacing and edge distance values are given in Section 4.2.3 of ESR-2322 (HIT-RE 500- SD) and ESR-3187 (HIT-HY 200). Reference the Design Guide section titled Special Moment Frame Main Screen View - Products pane for information on how to access product ESR’s. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Special Moment Frame Main Screen View – Application pane for more information. Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . The values input for sb,PI and cb,PI are checked against the minimum permissible values for sb,PI and cb,PI given in the ESR for the adhesive product that has been selected.

Special moment frames can consist of reinforced concrete beams and columns. PROFIS Rebar calculates the development length for a post-installed bar used in a reinforced concrete special moment frame per ACI 318-11 Section 21.7.5.2. The provisions of Section 21.7.5.3 require “straight bars terminated at a joint” to “pass through the confined core of a column or of a boundary element”. The post-installed end of a bar must be straight. Therefore, the post-installed bar development length calculated per Section 21.7.5.2 must be increased per Section 21.7.5.3 if any portion of that length is not within a confined core. The PROFIS Rebar parameter wc

corresponds to a column width.


If ld calculated per Section 21.7.5.2 is less than the value that has been input for wc, the value for ld will not be modified. If ld calculated per Section 21.7.5.2 is greater than the value that has been input for wc, the value for ld will be increased per the provisions given in Section 21.7.5.3.

When CSA A23.3-14 has been selected for design, PROFIS Rebar calculates the development length for a post-installed bar used in a reinforced concrete special moment frame per Clause 21.5.5.4. The provisions of Clause 21.5.5.5 require “straight bars terminated at a joint” to “pass through the confined core of a column”. Therefore, the post-installed bar development length calculated per Clause 21.5.5.4 must modified per Clause 21.5.5.5 if any portion of that length is not within a confined core.

ld calculated per Section 21.7.5.2 = 29”. The value that has been input for wc = 48”. 29” < 48”. The design value for ld = 29” per 21.7.5.2.

ld calculated per Section 21.7.5.2 = 29”. The value that has been input for wc = 24”. 29” > 24”. Per 21.7.5.3: the design value for ld = wc + (1.6)( ld – wc) = 24” + (1.6)(29” – 24”) = 32”

Design per ACI 318-11

Special Moment Frame Calculation tab The Calculation tab offers the following options:

Approval


Design Report

Click on this icon to obtain a design report. Users can input project information relative to the special moment frame project. The field titled Report name must be filled out in order to generate a report.


Part 1 of the report includes the following information: - Hilti adhesive product that has been selected. - post-installed reinforcing bar size and type. - ICC-ES Evaluation Service Report for the adhesive product. - Report issue date, and date when the report expires. Data used for PROFIS Rebar calculations will be based on the data contained in the report having the issued/valid dates shown. - Design method references the code provisions being used to perform calculations. PROFIS Rebar users can select design per ACI 318-11 or per CSA A23.3-14. - Base material conditions selected for the application. Parameters include cracked concrete, compressive strength, assumed adhesive temperature at the time of installation, assumed concrete temperature at the time of installation. - Installation parameters include the drilling method and the drilled hole condition. Hilti SafeSetTM technology is a proprietary system. Reference the Design Guide section titled Special Moment Frame Main Screen View - Products pane regarding how to access product information. - PROFIS Rebar will use seismic-specific data given in the ICC-ES Evaluation Service Report for the adhesive product. - PROFIS Rebar defaults to normal weight concrete for special moment frame applications. If ACI 318-11 provisions are being used and normal weight concrete has been selected, the report will show λ →1.0. If lightweight concrete has been selected, the report will show λ → 0.75. If CSA A23.3-14 provisions are being used and normal- density concrete has been selected, the report shows Lightweight concrete – no. If low-density concrete has been selected, the report shows Lightweight concrete – yes.

Part 2 of the report shows a generalized illustration of a special moment frame application.

Part 3 – Post-installed reinforcement – special moment frame in tension This section of the report includes information specific to post-installed bar calculations per ACI 318-11 Section 21.7.5. Additional explanations are shown in red. When Canada is selected as the region, design reports will reference CSA A23.3 Clause 21.5.5 provisions.

Reference 21.7.5.1

sb,PI

cb,PI

ld calculated per Section 21.7.5.2(a). The value that has been input for wc = 48”. (2.5)(11.47”) = 28.67” ≈ 29” 29” < 48”. The design value for ld = 29” per 21.7.5.2(a).

Section 21.7.5.1 Eq. (21-6)

Section 21.7.5.2(a)

Reference 21.7.5.1

sb,PI

cb,PI

ld calculated per Section 21.7.5.3. The value that has been input for wc = 24”. Per 21.7.5.2(a): (2.5)(16.38”) = 40.95” ≈ 41” 41” > 24”. Per Section 21.7.5.3: the design value for ld = 24” + (1.6)(41” – 24”) = 51”

Section 21.7.5.1 Eq. (21-6)

Section 21.7.5.2(a)

Specification Text



General Notes Text


Videos


PROFIS REBAR SPECIAL STRUCTURAL WALL OPTION

Opening a Special Structural Wall Project Click on the Menu tab and select New project. Highlight and click on the option titled Special Structural Wall. Selecting a Design method When ACI 318-11 is selected for the design method, calculations will be performed using the development and splice provisions of ACI 318-11, Chapter 21, Section 21.9.2. When CSA A23.3-14 is selected for the design method, calculations will be performed using the development and splice provisions of CSA A23.3-14, Chapter 21, Clause 21.6.5.

Special Structural Wall Main Screen View When the special structural wall option is selected, the following main screen will appear. Special structural wall tabs appear above this screen. Reference the section for each structural wall tab for more information on how to select parameters and input data relevant to a particular tab.

Special Structural Wall Main Screen View - Products pane Use the Products pane to select a Hilti adhesive system and post-installed reinforcing bar type. Options for selecting a post-installed bar size and grade correspond to the rebar portfolio given in the adhesive product Evaluation Service Report.



Special Structural Wall Main Screen View – Application pane The Application pane located in the center view of the main screen illustrates the parameters utilized when post-installing a reinforcing bar for a special structural wall application. Post- installed bars will be shown in red. Parameters relative to spacing and edge distance for post- installed bars are shown in the illustration. Definitions for each parameter are given below the illustration. Reference the ICC-ES Evaluation Service Report (ESR) for minimum edge distance and spacing requirements relative to post-installed bars. These requirements must be followed for both design and installation of the post-installed reinforcing bars. The parameter definitions also note additional checks that must be made by the user in order to satisfy the necessary ACI 318- 11 (or CSA A23.3-14) design and/or installation requirements. The Messages pane informs users about violations with respect to ESR minimum spacing, edge distance or concrete thickness. The embedment required to develop the post-installed bar in tension is defined as ld. This parameter, as shown in the screen illustration, corresponds to the value calculated per ACI 318- 11 Section 12.2 or CSA A23.3-14 Clause 12.2, with modifications for seismic design per ACI 318- 11 Section 21.9.2 (CSA A23.3-14 Clause 21.6.5). Post-installed bars are assumed to have a minimum end cover, which is defined as c1 in the illustration. The value for c1 is input by the user.

Special Structural Wall Main Screen View - Messages pane The Messages pane informs users about required data input, and violations with respect to geometry or installation parameters. Data relevant to calculating a development length per ACI 318-11 Chapter 12 or CSA A23.3-14 Chapter 12 must be input before PROFIS Rebar can perform calculations. The Messages pane will prompt users to input the relevant data. Minimum spacing and edge distance requirements for post-installed bars are given in the ICC-ES Evaluation Service Report (ESR) for the Hilti adhesive products in the PROFIS Rebar portfolio. If a spacing or edge distance value has been input that is less than the minimum value given in the ESR, the Messages pane will note the required minimum value. PROFIS Rebar will not perform calculations until the values input for spacing and edge distance satisfy the minimum requirements given in the ESR.


Special Structural Wall Main Screen View - Results pane The Results pane shows the code provisions used to calculate the post-installed bar development length, and the calculation results. PROFIS Rebar will not perform calculations until all relevant data required to perform calculations has been input, and all geometry requirements have been satisfied. Refer to the Messages pane if no information is shown in the Results pane.

The code being used to perform calculations, and the ICC-ES Evaluation Service Report corresponding to the adhesive product that has been selected, will be noted in the Results pane. The condition Development length (yield expected) corresponds to the reinforcement in a boundary element, designed per ACI 318-11 Section 21.9.2.3(c) or CSA A23.3 Clause 21.6.5.5. The condition Development length (yield not expected) corresponds to reinforcement designed per ACI 318-11 Section 12.2 (CSA A23.3 Clause 12.2.2) without any additional modifications for seismic conditions.




Special Structural Wall Base Material tab The special structural wall Base material tab offers the following options:

Cracked Concrete PROFIS Rebar assumes cracked concrete conditions for special structural wall applications.



Concrete Compressive Strength The ICC-ES Evaluation Service Reports for Hilti adhesives limit the concrete compressive strength that can be used for seismic design of post-installed reinforcing bars to a value of 2500 psi (17.2 N/mm2). Reference Part 4.2.4 in ESR-3187 (HIT-HY 200) and ESR-2322 (HIT-RE 500-SD). Go to the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access approvals for Hilti Adhesive products. PROFIS Rebar defaults to a concrete compressive strength value of 2500 psi (17.25 N/mm2) for special structural wall rebar calculations, and the value shown in the box titled Compr. str. f’c will be grayed-out to indicate that no other compressive strength besides the default value can be input.

ACI 318-11 provisions. CSA A23.3-14 provisions.

Lightweight Concrete Option – ACI 318-11 design PROFIS Rebar defaults to normal weight concrete (λa = 1.0) for special structural wall calculations.

Highlight and click on the icon titled Lightweight concrete to perform calculations for lightweight concrete conditions. PROFIS Rebar defaults to λa = 0.75 per ACI 318-11 Section 12.2.4 (d) when this option is selected. The option to input a splitting tensile strength value (fct) is not available in PROFIS Rebar.

Lightweight Concrete Option – CSA A23.3-14 design PROFIS Rebar defaults to normal-density concrete (k3 = 1.0) to perform calculations for special structural wall bars.

Highlight and click on the icon titled Lightweight concrete to perform calculations for low-density concrete conditions. PROFIS Rebar defaults to k3 = 1.3 per CSA A23.3-14 Clause 12.2.4 (c) when this option is selected. Alternate values for k3 cannot be input in PROFIS Rebar.

Service Temperatures There are two parameters for Service temperature in PROFIS Rebar: Base material temp. corresponds to the concrete temperature at the time the reinforcing bar is being post- installed. Adhesive temp. corresponds to the adhesive temperature at the time the reinforcing bar is being post- installed. Reference the Instructions For Use (IFU) in the adhesive product ICC-ES Evaluation Service Report (ESR) for the range of permissible concrete temperatures relative to that adhesive. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access product ESRs. Reference the adhesive product information available via Hilti On Line for the range of permissible installation temperatures relative to that adhesive. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access Hilti On-Line information for a product. PROFIS Rebar defaults to the following service temperatures each time a special structural wall application is opened.





Installation Parameters – Drilling Method PROFIS Rebar permits various drilling options to be selected for post-installing reinforcing bars. Click on the dropdown next to the header titled Drilling method to select the desired drilling option. Other than the option compressed air, the drilling options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access product ESR’s.






Installation Parameters – Base material PROFIS Rebar permits selection of parameters corresponding to the concrete condition for the drilled hole. Click on the dropdown next to the header titled Base material to select the desired hole condition. The hole condition options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access product ESR’s.

Installation Parameters – Member Thickness and End Cover Concrete member thickness (h) is input by the user via the box titled Member thickness h. End cover for the post-installed bar (c1) is input by the user via the box titled End cover c1. A tool tip notes the cover requirements given in the code that has been selected.

PROFIS Rebar checks the sum of the calculated development length (ld) plus the concrete cover from the end of the bar (c1) versus the concrete member thickness (h). If ld + c1 < h for both special structural wall development length calculations (“yield expected” or “yield not expected”), PROFIS Rebar will show these development lengths in the Results pane, and a report can be generated. If ld + c1 > h for either special structural wall development length calculation (“yield expected” or “yield not expected”), PROFIS Rebar will not show calculation results, and a message in the Messages pane will note the reason(s) no results are being shown. A report cannot be generated until ld + c1 < h for both special structural wall development length calculations

ACI 318-11 has been selected.

ld + c1 < h → report can be generated


ld for “yield expected” = 40 in → OK


ld for “yield not expected” = 41 in → NO

ld for “yield expected” = 40 in → NO

ld for “yield not expected” = 41 in → NO

Special Structural Wall Loads tab The special structural wall Loads tab offers the following options:

Load Condition – Tension bars PROFIS Rebar only performs special structural wall development length calculations for tension.

Load Condition - Seismic PROFIS Rebar defaults to Seismic design when a special structural wall project is opened. If United States has been selected as the region, calculations will be performed per ACI 318-11 Chapter 21. If Canada has been selected as the region, calculations will be performed per CSA A23.3-14 Chapter 21. Refer to the Design guide section titled Menu tab – Project Options for information on how to select a region. The option Static design will be grayed-out.

The concrete compressive strength will be limited to a value of 2500 psi (17.25 N/mm2) for PROFIS Rebar special structural wall applications. Adhesive testing per the ICC-ES AC308 Acceptance Criteria limits the compressive strength that can be used for seismic calculations to this minimum value. This limitation is noted in the adhesive product ICC-ES Evaluation Service Report (ESR). The value shown in the box titled Compr. str. f’c will be grayed-out to indicate that no other compressive strength besides the default value can be input. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access product ESR’s.


Special Structural Wall – Tab for Post-Installed Reinforcement (Yield Expected) The tab titled Reinforcement post-installed bars where yield is expected permits data entry for parameters needed to calculate a tension development length per the provisions of ACI 318-11 Section 21.9.2.3(c). For post-installed bars “at locations where yielding of longitudinal reinforcement is likely to occur”, an overstrength factor of 1.25 is applied to the yield strength (fy) when calculating the tension development length (ld). The value for ld is calculated per ACI 318-11 Equation (12-1) or CSA A23.3-14 Equation (12-1). The 1.25 overstrength factor is based on the assumption that the actual bar yield strength will exceed the nominal yield strength. PROFIS Rebar special structural wall calculations for Canada use the provisions of CSA A23.3-14 Clause 21.6.5.5.


Development length (ld) calculated using 1.25fy.



ACI 318-11 Modification Factors (ψ - factors) PROFIS Rebar calculates tension development lengths (ld) for special structural walls using Equation (12-1), which is given in ACI 318-11 Section 12.2.

The factor ψt is used to modify the development length if there is more than 12 inches of fresh concrete placed below horizontal reinforcement. Reference Section 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. The factor ψe is used to modify the development length if coated bars will be post-installed. Reference Section 12.2.4(b). PROFIS Rebar defaults to Rebar uncoated ψe → ψe = 1.0 when a special structural wall application is opened. If coated bars are used, the value for ψe can be increased per Section 12.2.4. PROFIS Rebar assumes ψe = 1.5 if the option Rebar coated ψe is selected.

The factor ψs is dependent on the rebar diameter. Per Section 12.2.4(c), when calculating a development length in tension (ld), PROFIS Rebar uses ψs = 0.8 for bar sizes #3 < db < #6, and ψs = 1.0 for bar sizes #7 < db < #10. The value for ψs will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Special Structural Wall Calculation Tab – Design Report for information on the PROFIS Rebar report for special structural wall applications.

ψe = 1.0

ψe = 1.5

CSA A23.3-14 Modification Factors (k - factors) PROFIS Rebar calculates tension development lengths (ld) using Equation (12-1), which is given in CSA A23.3-14 Clause 12.2.2.

The factor k1 is used to modify the development length if there is more than 300 mm of fresh concrete placed below the bars being developed. Reference Clause 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. The factor k2 is used to modify the development length if coated bars will be post-installed. Reference Clause 12.2.4(b). PROFIS Rebar defaults to Rebar uncoated k2 → k2 = 1.0 when a special structural wall application is opened. If coated bars are used, the value for k2 can be increased per Clause 12.2.4. PROFIS Rebar assumes k2 = 1.5 if the option Rebar coated k2 is selected.

The factor k3 is dependent on the concrete density being assumed. Reference the Design Guide section titled Lightweight Concrete Option – CSA A23.3-14 design for more information about this parameter. The factor k4 is dependent on the rebar diameter. Per Clause 12.2.4(d), when calculating a bar development length in tension (ld), PROFIS Rebar uses k4 = 0.8 for bar sizes 10M < db < 20M, and k4 = 1.0 for bar sizes 25M < db < 30M. The value for k4 will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Special Structural Wall Calculation Tab – Design Report for information on the PROFIS Rebar report for special structural wall applications.

k2 = 1.0

k2 = 1.5

Bar Spacing and Cover Requirements per ACI 318-11 PROFIS Rebar calculates special structural wall tension development lengths (ld) using Equation (12-1), which is given in ACI 318-11 Section 12.2.

The parameter Ktr is defined by Equation (12-2) as: PROFIS Rebar does not consider existing transverse reinforcement in the concrete member when calculating ld for special structural wall post-installed bars, and assumes Ktr equals zero. The term in Equation (12-1) defined as (cb + Ktr)/ db can be designated the “confinement term”. The maximum value permitted by ACI 318-11 Section 12.2.3 for the confinement term equals 2.5. PROFIS Rebar assumes (cb + Ktr)/ db equals 2.5 when calculating a special structural wall post- installed bar development length; thereby not considering the cover parameter (cb) or the bar diameter (db) for calculating a confinement term value. The parameter cb is defined with respect to reinforcing bars as: “….the smallest of the side cover, the cover over the bar….measured to the center of the bar…., or one-half the center-to-center spacing of the bars…” Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . A value for cb will be shown in the PROFIS Rebar report corresponding to MINIMUM {cb,PI : sb,PI /2} per ACI 318-11 Section 12.2.3, but this parameter is not considered in the PROFIS Rebar tension development calculation for special structural walls. The values input for for sb,PI and cb,PI are, however, checked against the minimum permissible values for sb,PI and cb,PI given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Special Structural Wall Main Screen View – Application pane for more information.

40 Atr sn Ktr = (12-2)

Bar Spacing and Cover Requirements per CSA A23.3-14 PROFIS Rebar calculates special structural wall tension development lengths (ld) using Equation (12-1), which is given in CSA A23.3-14 Clause 12.2.2.

The parameter Ktr is defined as: PROFIS Rebar does not consider existing transverse reinforcement in the concrete member when calculating ld for special structural wall post-installed bars, and assumes Ktr equals zero. The term in Equation (12-1) defined as (dcs + Ktr) can be designated the “confinement term”. The maximum value permitted by Clause 12.2.2 for the confinement term equals 2.5db. PROFIS Rebar assumes (dcs + Ktr) equals 2.5db when calculating a special structural wall tension development length; thereby not considering the cover parameter (dcs) or the parameter Kt for calculating a confinement term value. The confinement term in CSA A23.3-14 Equation (12-1) is defined as: (dcs + Ktr). The parameter dcs is defined with respect to reinforcing bars as: “(a) the distance from the closest concrete surface to the centre of the bar being developed; or (b) two-thirds the centre-to-centre spacing of the bars being developed.” Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . A value for dcs will be shown in the PROFIS Rebar report corresponding to MINIMUM {cb,PI : 2sb,PI /3} per CSA A23.3-14 Clause 12.2.2, but this parameter is not considered in the PROFIS Rebar tension development calculation for special structural walls. The values input for for sb,PI and cb,PI are, however, checked against the minimum permissible values for sb,PI and cb,PI given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Special Structural Wall Main Screen View – Application pane for more information.


Special Structural Wall – Tab for Post-Installed Reinforcement (Yield Not Expected) The tab titled Reinforcement post-installed bars where yield is NOT expected permits data entry for the parameters needed to calculate a tension development length per the provisions of ACI 318-11 Section 21.9.2.3, without consideration of an overstrength factor (1.25) being applied to the nominal yield strength (fy). The tension development length (ld) is calculated per ACI 318-11 Equation (12-1) or CSA A23.3-14 Equation (12-1). PROFIS Rebar special structural wall calculations for Canada use the provisions of CSA A23.3-14 Clause 21.6.5.5.





ACI 318-11 Modification Factors (ψ - factors) PROFIS Rebar calculates tension development lengths (ld) using Equation (12-1), which is given in ACI 318-11 Section 12.2.

The factor ψt is used to modify the development length if there is more than 12 inches of fresh concrete placed below horizontal reinforcement. Reference Section 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. The factor ψe is used to modify the development length if coated bars will be post-installed. Reference Section 12.2.4(b). PROFIS Rebar defaults to Rebar uncoated ψe → ψe = 1.0 when a special structural wall application is opened. If coated bars are used, the value for ψe can be increased per Section 12.2.4. PROFIS Rebar assumes ψe = 1.5 if the option Rebar coated ψe is selected.

The factor ψs is dependent on the rebar diameter. Per Section 12.2.4(c), when calculating a development length in tension (ld), PROFIS Rebar uses ψs = 0.8 for bar sizes #3 < db < #6, and ψs = 1.0 for bar sizes #7 < db < #10. The value for ψs will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Special Structural Wall Calculation Tab – Design Report for information on the PROFIS Rebar report for special structural wall applications.

ψe = 1.0

ψe = 1.5

CSA A23.3-14 Modification Factors (k - factors) PROFIS Rebar calculates tension development lengths (ld) using Equation (12-1), which is given in CSA A23.3-14 Clause 12.2.2.

The factor k1 is used to modify the development length if there is more than 300 mm of fresh concrete placed below the bars being developed. Reference Clause 12.2.4(a). PROFIS Rebar does not include this factor in post-installed reinforcing bar development length calculations. The factor k2 is used to modify the development length if coated bars will be post-installed. Reference Clause 12.2.4(b). PROFIS Rebar defaults to Rebar uncoated k2 → k2 = 1.0 when a special structural wall application is opened. If coated bars are used, the value for k2 can be increased per Clause 12.2.4. PROFIS Rebar assumes k2 = 1.5 if the option Rebar coated k2 is selected.

The factor k3 is dependent on the concrete density being assumed. Reference the Design Guide section titled Lightweight Concrete Option – CSA A23.3-14 design for more information about this parameter. The factor k4 is dependent on the rebar diameter. Per Clause 12.2.4(d), when calculating a bar development length in tension (ld), PROFIS Rebar uses k4 = 0.8 for bar sizes 10M < db < 20M, and k4 = 1.0 for bar sizes 25M < db < 30M. The value for k4 will be shown in the Calculations section of the PROFIS Rebar report. Reference the Design Guide section titled Special Structural Wall Calculation Tab – Design Report for information on the PROFIS Rebar report for special structural wall applications.

k2 = 1.0

k2 = 1.5

Bar Spacing and Cover Requirements per ACI 318-11 PROFIS Rebar calculates special structural wall tension development lengths (ld) using Equation (12-1), which is given in ACI 318-11 Section 12.2.

The parameter Ktr is defined by Equation (12-2) as: PROFIS Rebar does not consider existing transverse reinforcement in the concrete member when calculating ld for special structural wall post-installed bars, and assumes Ktr equals zero. The term in Equation (12-1) defined as (cb + Ktr)/ db can be designated the “confinement term”. The maximum value permitted by ACI 318-11 Section 12.2.3 for the confinement term equals 2.5. PROFIS Rebar assumes (cb + Ktr)/ db equals 2.5 when calculating a special structural wall post- installed bar development length; thereby not considering the cover parameter (cb) or the bar diameter (db) for calculating a confinement term value. The parameter cb is defined with respect to reinforcing bars as: “….the smallest of the side cover, the cover over the bar….measured to the center of the bar…., or one-half the center-to-center spacing of the bars…” Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . A value for cb will be shown in the PROFIS Rebar report corresponding to MINIMUM {cb,PI : sb,PI /2} per ACI 318-11 Section 12.2.3, but this parameter is not considered in the PROFIS Rebar tension development calculation for special structural walls. The values input for for sb,PI and cb,PI are, however, checked against the minimum permissible values for sb,PI and cb,PI given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Special Structural Wall Main Screen View – Application pane for more information.

40 Atr sn Ktr = (12-2)

Bar Spacing and Cover Requirements per CSA A23.3-14 PROFIS Rebar calculates special structural wall tension development lengths (ld) using Equation (12-1), which is given in CSA A23.3-14 Clause 12.2.2.

The parameter Ktr is defined as: PROFIS Rebar does not consider existing transverse reinforcement in the concrete member when calculating ld for special structural wall post-installed bars, and assumes Ktr equals zero. The term in Equation (12-1) defined as (dcs + Ktr) can be designated the “confinement term”. The maximum value permitted by Clause 12.2.2 for the confinement term equals 2.5db. PROFIS Rebar assumes (dcs + Ktr) equals 2.5db when calculating a special structural wall tension development length; thereby not considering the cover parameter (dcs) or the parameter Kt for calculating a confinement term value. The confinement term in CSA A23.3-14 Equation (12-1) is defined as: (dcs + Ktr). The parameter dcs is defined with respect to reinforcing bars as: “(a) the distance from the closest concrete surface to the centre of the bar being developed; or (b) two-thirds the centre-to-centre spacing of the bars being developed.” Enter the value corresponding to the center-to-center spacing of the post-installed reinforcing bars via the box titled: sb,PI . Enter the value corresponding to the smallest post-installed reinforcing bar cover (measured from the center of the bar) via the box titled: cb,PI . A value for dcs will be shown in the PROFIS Rebar report corresponding to MINIMUM {cb,PI : 2sb,PI /3} per CSA A23.3-14 Clause 12.2.2, but this parameter is not considered in the PROFIS Rebar tension development calculation for special structural walls. The values input for for sb,PI and cb,PI are, however, checked against the minimum permissible values for sb,PI and cb,PI given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane for information on how to access an ESR. The PROFIS Rebar main screen contains an illustration for these parameters, as well as definitions. Reference the Design Guide section titled Special Structural Wall Main Screen View – Application pane for more information.


Special Structural Wall Calculation tab The Calculation tab offers the following options:

Approval


Design Report

Click on this icon to obtain a design report. Users can input project information relative to the special structural wall project. The field titled Report name must be filled out in order to generate a report.


Part 1 of the report includes the following information: - Hilti adhesive product that has been selected. - post-installed reinforcing bar size and type. - ICC-ES Evaluation Service Report for the adhesive product. - Report issue date, and date when the report expires. Data used for PROFIS Rebar calculations will be based on the data contained in the report having the issued/valid dates shown. - Design method references the code provisions being used to perform calculations. PROFIS Rebar users can select design per ACI 318-11 or per CSA A23.3-14. - Base material conditions selected for the application. Parameters include cracked concrete, compressive strength, assumed adhesive temperature at the time of installation, assumed concrete temperature at the time of installation. - Installation parameters include the drilling method and the drilled hole condition. Hilti SafeSetTM technology is a proprietary system. Reference the Design Guide section titled Special Structural Wall Main Screen View - Products pane regarding how to access product information. - PROFIS Rebar will use seismic-specific data given in the ICC-ES Evaluation Service Report for the adhesive product. - PROFIS Rebar defaults to normal weight concrete for special structural wall applications. If ACI 318-11 provisions are being used and normal weight concrete has been selected, the report will show λ →1.0. If lightweight concrete has been selected, the report will show λ → 0.75. If CSA A23.3-14 provisions are being used and normal- density concrete has been selected, the report shows Lightweight concrete – no. If low-density concrete has been selected, the report shows Lightweight concrete – yes.

or Hilti HIT-RE 500-SD + 15M bar

or G30.18 Gr. 400

or CSA A23.3-14

or cracked concrete, f’c = 17.25 N/mm2, temp. adhesive /

concrete: 20/20 C

Part 2 of the report shows a generalized illustration of a special structural wall application.

Part 3 – Post-installed reinforcement – special structural wall in tension for yield This section of the report includes information specific to post-installed bar calculations per ACI 318-11 Section 21.9.2.3(c). Additional explanations are shown in red. When Canada is selected as the region, design reports will reference CSA A23.3-14 provisions.


→ sb,PI → cb,PI

default value


ld calculated per Eq. (12-1) Check vs. ld,min. ld = MAXIMUM { ld,min ; ld,initial}

ld calculated with 1.25 overstrength factor per ACI 318-11 Section 21.9.2.3(c). The value that has been calculated for ld,initial = 14.34” ≈ 15”. (1.25)(14.34”) = 17.93” ≈ 18” The value for ld,1.25 = 18” per 21.9.2.3(c).

Part 4 – Post-installed reinforcement – special structural wall in tension – nominal yield This section of the report includes information specific to post-installed bar calculations per ACI 318-11 Section 12.2.3. Additional explanations are shown in red. When Canada is selected as the region, design reports will reference CSA A23.3-14 provisions.


→ sb,PI → cb,PI

default value

ld calculated per Eq. (12-1) Check vs. ld,min.


ld = MAXIMUM { ld,min ; ld,initial}

Specification Text



General Notes Text


Videos


PROFIS REBAR SHEAR DOWEL PER HILTI METHOD Shear dowels can be designed using the shear friction provisions in Chapter 11 of ACI 318-11 (U.S.) or in Chapter 11 of CSA A23.3-14 (Canada). Refer to the Design Guide section titled PROFIS REBAR SHEAR DOWEL PER ACI 318-11 or CSA A23.3-14 OPTION for information on PROFIS Rebar calculations using these provisions. PROFIS Rebar offers an alternative method for considering shear friction, which will be referred to as the “Hilti Method” in this design guide. Calculations are performed using the shear friction provisions described in Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE. This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide to view or download the brochure. Hilti Post-Installed Reinforcing Bar Guide Calculations using the Hilti Method permit post-installed bars to be installed at a shallower embedment than that required by either ACI or CSA for applications in which shear friction is being considered. Selecting a Design method and Opening a New Hilti Method Shear Dowel Project Click on the Menu tab and select New project. Highlight and click on the option titled Hilti to select the Hilti Method. Click on the Shear dowels image to open a new project.



Hilti Method Shear Dowels Main Screen View When the Hilti Method shear dowel option is selected, the following main screen will appear. Shear Dowel tabs appear above this screen. Reference the section for each shear dowel tab for more information on how to select parameters and input data relevant to a particular tab.

Hilti Shear Dowel Main Screen View - Products pane Use the Products pane to select a Hilti adhesive system and post-installed reinforcing bar type. Options for selecting a post-installed bar size and grade correspond to the rebar portfolio given in the adhesive product Evaluation Service Report.

U.S. Design

Canadian Design


Click on the bottom star next to the product photo to access the Hilti On Line page containing information for that product.

Hilti Method Shear Dowel Main Screen View – Application pane The Application pane located in the center view of the main screen illustrates parameters utilized for shear dowel calculations and installation. Post-installed bars will be shown in red. Parameters relative to spacing and edge distance for post-installed bars are shown in the illustration. Definitions for each parameter are given below the illustration. Reference the ICC-ES Evaluation Service Report (ESR) for minimum edge distance and spacing requirements relative to post-installed bars. These requirements must be followed for both design and installation of the post-installed reinforcing bars. The parameter definitions also note additional checks that must be made by the user in order to satisfy the necessary design and/or installation requirements. The Messages pane informs users about violations with respect to ESR minimum spacing, edge distance or concrete thickness.

The parameter Ac defines the surface area of the shear interface being considered. This area corresponds to the bar spacing in the x-direction times the bar spacing in the y-direction: Ac = (Sb,PI,X)( Sb,PI,y). The Hilti Method requires PROFIS Rebar users to input a bar embedment, designated (le). This embedment can be less than the minimum development length of 12 in given in ACI 318-11 Section 12.2.1 (300 mm per CSA A23.3-14 Clause 12.2.1); however, it must be greater than or equal to the minimum embedment depth given in the ESR for the adhesive product that has been selected. Reference the Design Guide section titled Hilti Shear Dowel Main Screen View - Products pane for information on how to access an ESR. Table 25 in ESR-2322 for HIT-RE 500-

SD and Table 13 in ESR-3187 for HIT-HY 200 show the minimum embedment depths permitted for each bar diameter in that adhesive portfolio. Shear dowels are assumed to be installed in an existing concrete wall having a width ww as shown in the illustration. Post-installed bars are assumed to have a minimum end cover, which is defined as c1 in the illustration. The values for ww and c1 are input by the user. Total embedment for a post-installed shear dowel is defined in the illustration by the value that has been input for le.

Hilti Method Shear Dowel Main Screen View - Messages pane The Messages pane informs users about required data input, and violations with respect to geometry or installation parameters. Geometry parameters for post-installed bars are given in the ESR for each of the Hilti adhesive products in the PROFIS Rebar portfolio. Section 4.2.3 in both ESR-2322 (HIT-RE 500-SD) and ESR-3187 (HIT-HY 200) list the minimum geometry parameters for each bar diameter in that adhesive portfolio. If a geometry parameter has been input that is less than the minimum value given in the ESR, the Messages pane will note the required minimum value. PROFIS Rebar will not perform calculations until the values input for all of the geometry parameters satisfy the minimum requirements given in the ESR.

Canadian Design U.S. Design

Hilti Method Shear Dowel Main Screen View - Results pane The Results pane shows information relative to Hilti Method shear dowel calculations. PROFIS Rebar will not perform calculations until all relevant data required to perform these calculations has been input, and all geometry requirements have been satisfied. Refer to the Messages pane if no information is shown in the Results pane.

The design method being used to perform Hilti Method shear dowel calculations will be noted as Hilti in the Messages pane. Design parameters and technical data for the Hilti Method will be given in Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE. This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide. The embedment depth shown in the Messages pane corresponds to the parameter le input by the user. Reference the PROFIS Rebar Design Guide section titled Hilti Method Shear Dowel – Tab for Post-Installed Reinforcement for information on how to input a value for le. The Drilling length equals le.

= le input by user



= le input by user = le input by user = le input by user


Hilti Method Shear Dowel - Base Material tab The Hilti Method shear dowel Base material tab offers the following options:

Cracked or Uncracked Concrete PROFIS Rebar shear dowel calculations for the Hilti Method are dependent on whether uncracked concrete conditions or cracked concrete conditions are selected. The characteristic bond stress of the adhesive (τk,xxx) is utilized in the parameter fc,vf to calculate the “nominal interface shear contribution from friction” (τf). Characteristic bond stress values for uncracked concrete conditions or cracked concrete conditions (τk,uncr or τk,cr respectively), are derived from testing per the ICC-ES acceptance criteria AC308. These values are given in the adhesive product ESR. Vn = Ac (βf τf + βd τd) (Equation 18) reference PI Rebar Guide Section 6.6 τf = 0.33 [ (f’c )2 (fc,vf + fext) ]1/3 (Equation 19) reference PI Rebar Guide Section 6.6 5 fbu le Avf where fc,vf = db Ac and fbu = τk,uncr or τk,cr from the ESR Design parameters and technical data for the Hilti Method will be given in Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE. This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide. Click on the dropdown as shown below to select cracked or uncracked concrete. PROFIS Rebar defaults to uncracked concrete conditions for Hilti Method shear dowel applications.

Concrete cracks when tensile stresses in the concrete imposed by loads or restraint conditions exceed its tensile strength. Uncracked concrete conditions can be assumed if it can be demonstrated that cracking of the concrete at service load levels will not be expected to occur over the service life of the concrete member.

Canadian Design

U.S. Design


Concrete Compressive Strength PROFIS Rebar shear dowel calculations for the Hilti Method are dependent on the concrete compressive strength selected. The parameter fbu is utilized in the parameter fc,vf to calculate the “nominal interface shear contribution from friction” (τf). The parameter fbu corresponds to the “bond strength associated with the post-installed bar”, otherwise referred to as the “characteristic bond stress”. Values for characteristic bond stress in uncracked concrete and cracked concrete are derived from testing per the ICC-ES acceptance criteria AC308. These values are given in the adhesive anchor ICC-ES Evaluation Service Report (ESR) with the designations τk,uncr for the characteristic bond stress in uncracked concrete, and τk,cr for the characteristic bond stress in cracked concrete. Values for τk,uncr and τk,cr can be increased if the concrete compressive strength is greater than 2500 psi (17.2 N/mm2). Vn = Ac (βf τf + βd τd) (Equation 18) reference PI Rebar Guide Section 6.6 τf = 0.33 [ (f’c )2 (fc,vf + fext) ]1/3 (Equation 19) reference PI Rebar Guide Section 6.6 5 fbu le Avf where fc,vf = db Ac and fbu = τk,uncr or τk,cr from the ESR when f’c > 2500 psi, τk,uncr and τk,cr can be increased by the factor (f’c/2500)0.1 for U.S. design, and by (f’c / 17.2)0.1 for Canadian design. Design parameters and technical data for the Hilti Method will be given in Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE. This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide. Pre-set values for concrete compressive strength can be selected by clicking on the dropdown above the box titled Compr. str. f’c . The value selected will be shown in the box.

Canadian Design

U.S. Design


Concrete compressive strengths other than the pre-set values can be selected by clicking on Custom in the dropdown above the box titled Compr. str. f’c . Type the desired value in the box. The range of concrete compressive strength values that can be used in PROFIS Rebar is limited to: 2500 psi (17.2 MPa) < f’c < 8000 psi (55.1 MPa) per Section 5.0 - CONDITIONS FOR USE in the ICC-ES Evaluation Service Report (ESR) for the adhesive product. If a concrete compressive strength less than 2500 psi (17.2 MPa) is input, PROFIS Rebar will default to the minimum permissible compressive strength of 2500 psi (17.2 MPa). If a concrete compressive strength greater than 8000 psi (55.1 MPa) is input, PROFIS Rebar will default to the maximum permissible compressive strength of 8000 psi (55.1 MPa). Go to the Design Guide section titled Hilti Method Shear Dowel Main Screen View - Products pane for information on how to access an ESR.

PROFIS Rebar shear dowel calculations for the Hilti Method assume normal weight (normal density) concrete. Reference the Design Guide section titled Hilti Method Shear Dowel - Loads tab for additional information about the concrete compressive strength that can be used for seismic load conditions.

Canadian Design

U.S. Design

Service Temperatures There are four parameters for Service temperature in PROFIS Rebar when using the Hilti Method: Base material temp. corresponds to the concrete temperature at the time the reinforcing bar is being post- installed. Adhesive temp. corresponds to the adhesive temperature at the time the reinforcing bar is being post- installed. Short term corresponds to elevated concrete temperatures “that occur over brief intervals, e.g., as a result diurnal cycling”, during the service life of the post-installed bar. Long term corresponds to elevated concrete temperatures that are “roughly constant over significant periods of time”, during the service life of the post-installed bar. Reference the Instructions For Use (IFU) in the adhesive product ICC-ES Evaluation Service Report (ESR) for the range of permissible concrete temperatures relative to installing that adhesive. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access product ESRs. Also reference the adhesive product information available via Hilti On Line for the range of permissible adhesive installation temperatures. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access Hilti On-Line information for a product. PROFIS Anchor defaults to the following base material installation temperatures and adhesive installation temperatures each time a new shear dowel application is opened.

Inputting an installation temperature value outside the range permitted for the adhesive product that has been selected results in a message showing the permissible range for that product. PROFIS Anchor will not perform calculations until the installation temperature values input are within the permissible range.


Canadian Design

U.S. Design

Short term/long term temperature ranges are given in the adhesive anchor ESR. Inputting temperature values within a particular range into PROFIS Rebar results in the corresponding τk,xxxx value given in the ESR being used to calculate fbu. See the Design Guide sections Base Material tab - Cracked or Uncracked Concrete and Base Material tab – Concrete Compressive Strength for information on how τk,xxxx and fbu are defined. If temperature values outside the minimum or maximum short term/long term values given in the ESR are input, PROFIS Rebar defaults to the minimum or maximum values, and the corresponding τk,xxxx value for the default temperatures will be used to calculate fbu. Following is an example of how PROFIS Rebar determines the value for fbu that will be used in a Hilti Method shear dowel calculation. Assume a #5 bar will be installed into cracked concrete having a compressive strength of 4000 psi using HIT-HY 200 adhesive. Reference Table 13 in ESR-3187

fbu = τk,cr = (1000 psi)(4000 psi/2500 psi)0.1 = 1048 psi fbu value shown in the PROFIS Rebar report

Temperature Range B

Installation Parameters – Drilling Method PROFIS Rebar permits various drilling options to be selected for post-installing reinforcing bars using the Hilti Method. Click on the dropdown next to the header titled Drilling method to select the desired drilling option. The drilling options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Hilti Method Shear Dowel Main Screen View - Products pane for information on how to access product ESR’s.

Installation Parameters – Base material PROFIS Rebar permits selection of parameters corresponding to the concrete condition for the drilled hole. Click on the dropdown next to the header titled Base material to select the desired hole condition. The hole condition options available for the adhesive products in the PROFIS Rebar portfolio will depend on the options noted in the ICC-ES Evaluation Service Report (ESR) for that product. Reference the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access product ESR’s.



Installation Parameters – Wall Width and End Cover PROFIS Rebar assumes shear dowels are installed into a concrete wall having width ww. Users input a value for ww via the box titled Wall width w. End cover for the shear dowel (c1) is input by the user via the box titled End cover c1. A tool tip notes the cover requirements given in the code for the country that has been selected: ACI 318-11 Section 7.7.1 for the U.S or CSA A23.3-14 Annex A Table 17 for Canada.

The post-installed bar embedment length input by the user corresponds to the parameter le shown in the PROFIS Rebar main screen illustration for Hilti Method shear dowels. Reference the Design Guide section titled Hilti Method Shear Dowel – Tab for Post-Installed Reinforcement for information on how to input a value for le.

U.S. Design

PROFIS Rebar checks the sum of le plus the concrete cover from the end of the bar (c1) versus the concrete wall width (ww). If le + c1 < ww, PROFIS Rebar will show the value that has been input for le via the parameter Embedment length in the Results pane, and a report can be generated. If le + c1 > ww, PROFIS Rebar will not show a value for Embedment length, and a message in the Messages pane will note the reason(s) no results are being shown. A report cannot be generated until le + c1 < ww.

le+ c1 < ww → report can be generated

le+ c1 > ww → report cannot be generated

le + c1 > ww → report cannot be generated

→ le

Hilti Method Shear Dowel - Loads tab The Hilti Method shear dowel Loads tab offers the following options:

Design The Hilti Method requires a factored load value (Vu) to be input. Vu is checked against a design value calculated for the interface shear strength (φVn), which is defined as follows: φVn = φ [ Ac (βf τf + βd τd ) ] reference PI Rebar Guide Section 6.6 Design parameters and technical data for the Hilti Method will be given in Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE. This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide. If the value for φVn calculated by PROFIS Rebar is greater than or equal to the value that has been input for Vu, PROFIS Rebar will show the value that has been input for le via the parameter Embedment length in the Results pane. A report can be generated.

If the value for φVn calculated by PROFIS Rebar is less than the value that has been input for Vu, PROFIS Rebar will not show a value for Embedment length, and a message in the Messages pane will note the value that has been calculated for φVn . A report cannot be generated until φVn > Vu . The Messages pane prompts users to consider inputting an alternative embedment (le) in order to obtain a calculated value for φVn that is > Vu.

→ le

The calculated value for φVn = 23,690 lb → φVn > Vu . A report can be generated.

The calculated value for φVn = 23,690 lb → φVn < Vu . A report cannot be generated.

le = 8 in has been input

Vu = 25,000 lb has been input

le = 8 in has been input

Vu = 22,000 lb has been input


Load Condition – Static The Hilti Method calculates an “interface shear strength” (Vn) which is defined as follows: Vn = Ac (βf τf + βd τd ) (Equation 18) reference PI Rebar Guide Section 6.6 The parameters βf and βd are “contribution factors” for “friction” and “dowel action” respectively. The value for each parameter will depend on whether Static design or Seismic design has been selected for the load condition. Design parameters and technical data for the Hilti Method will be given in Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE. This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide. PROFIS Rebar defaults to Static design when a Hilti Method shear dowel project is opened.

The parameter βf is assumed to equal 0.6, which the Post-Installed Reinforcing Bar Guide defines as relevant to concrete that has been mechanically roughened to a 1/4 in amplitude. The parameter βd is dependent on the embedment depth value (le) that has been input such that: le > 8db → βd = 0.75 le < 8db → βd = 0.50 Reference the PROFIS Rebar Design Guide section titled Hilti Method Shear Dowel – Tab for Post-Installed Reinforcement for information on how to input a value for le.


PROFIS Rebar shear dowel calculations for the Hilti Method are dependent on the concrete compressive strength selected. When Static design has been selected for the load condition, pre- set values for concrete compressive strength can be selected by clicking on the dropdown above the box titled Compr. str. f’c . The value selected will be shown in the box

Concrete compressive strengths other than the pre-set values can be selected by clicking on Custom in the dropdown above the box titled Compr. str. f’c . Type the desired value in the box. The range of concrete compressive strength values that can be used in PROFIS Rebar is limited to: 2500 psi (17.2 MPa) < f’c < 8000 psi (55.1 MPa) per Section 5.0 - CONDITIONS FOR USE in the ICC-ES Evaluation Service Report (ESR) for the adhesive product. If a concrete compressive strength less than 2500 psi (17.2 MPa) is input, PROFIS Rebar will default to the minimum permissible compressive strength of 2500 psi (17.2 MPa). If a concrete compressive strength greater than 8000 psi (55.1 MPa) is input, PROFIS Rebar will default to the maximum permissible compressive strength of 8000 psi (55.1 MPa). Go to the Design Guide section titled Shear Dowel Main Screen View - Products pane for information on how to access an ESR.


Canadian Design

U.S. Design

Load Condition – Seismic The Hilti Method calculates an “interface shear strength” (Vn) which is defined as follows: Vn = Ac (βf τf + βd τd ) (Equation 18) reference PI Rebar Guide Section 6.6 The parameters βf and βd are “contribution factors” for “friction” and “dowel action” respectively. The value for each parameter will depend on whether Static design or Seismic design has been selected for the load condition. Design parameters and technical data for the Hilti Method will be given in Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE. This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide. PROFIS Rebar defaults to Static design when a Hilti Method shear dowel project is opened. Highlight and click on Seismic design to utilize Hilti Method seismic parameters.

When Seismic design is selected, the parameter βf is assumed to equal 0.2. The parameter βd is dependent on a minimum embedment depth value (le) such that: le,minimum > 12db → βd = 0.75 (seismic design conditions) The concrete compressive strength for seismic design will be limited to 2500 psi (17.25 MPa). Adhesive testing per the ICC-ES AC308 Acceptance Criteria limits the compressive strength that can be used for seismic calculations to this minimum value. This limitation is noted in the adhesive product ICC-ES Evaluation Service Report (ESR). Reference the Design Guide section titled Hilti Shear Dowel Main Screen View - Products pane for information on how to access product ESR’s.



Hilti Method Shear Dowel – Tab for Post-Installed Reinforcement Design parameters and technical data for the Hilti Method will be given in Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE. This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center Go to the link titled Post-Installed Reinforcing Bar Guide. The tab titled Reinforcement post-installed permits values for the following parameters to be input: - post-installed bar embedment depth (le). - post-installed bar spacing (sb,PI,X and sb,PI,Y). - post-installed bar cover (cb,PI).

The parameter for post-installed bar embedment depth (le) is input by the user. PROFIS Rebar uses the value that has been input for le to calculate the parameter fcv,f , which is defined in the Post-Installed Reinforcing Bar Guide as follows: 5 fbu le Avf fc,vf = db Ac fcv,f is used to calculate the “nominal interface shear contribution from friction” (τf). τf = 0.33 [ (f’c )2 (fc,vf + fext) ]1/3 (Equation 19) reference PI Rebar Guide Section 6.6 τf is used to calculate the “nominal interface shear strength” (Vn). Vn = Ac (βf τf + βd τd) (Equation 18) reference PI Rebar Guide Section 6.6

Canadian Design

U.S. Design


The value input for le can be less than the minimum development length of 12 in given in ACI 318- 11 Section 12.2.1 (300 mm per CSA A23.3-14 Clause 12.2.1); however, it must be greater than or equal to the minimum embedment depth given in the ICC-ES Evaluation Service Report (ESR) for the adhesive product that has been selected. Reference the Design Guide section titled Hilti Shear Dowel Main Screen View - Products pane for information on how to access an ESR. Table 25 in ESR-2322 for HIT-RE 500-SD and Table 13 in ESR-3187 for HIT-HY 200 show the minimum embedment depths permitted for each bar diameter in that adhesive portfolio. If a value for le has been input that is less than the minimum embedment depth value given in the ESR for the bar size that has been selected, PROFIS Rebar will not show a value for Embedment length in the Results pane, and a message in the Messages pane will note the minimum required embedment depth. A report cannot be generated until le > this value.

reference ESR-3187

The parameter Ac is used to calculate fc,vf , which is then used to calculate τf.

Ac is also used to calculate τd , which is defined in the Post-Installed Reinforcing Bar Guide as: 1.3 n db

2 (f’c fv)0.5

τd = Ac . Both τf and τd are used to calculate the “nominal interface shear contribution” (Vn), where: Vn = Ac (βf τf + βd τd) (Equation 18) reference PI Rebar Guide Section 6.6 Ac defines the surface area of the shear interface being considered. This area corresponds to the bar spacing in the x-direction times the bar spacing in the y-direction: Ac = (Sb,PI,X)( Sb,PI,y). The PROFIS Rebar main screen for Hilti Method shear dowels illustrates the parameters for Sb,PI,X and Sb,PI,Y.

cb,PI corresponds the distance of the post-installed bar from the nearest concrete edge, measured from the center of the bar. Reference section 4.2.3 in ESR-2322 (HIT-RE 500-SD) and in ESR- 3187 (HIT-HY 200) for minimum cb,PI values, These values must be followed for bar installation in accordance with the ESR’s. If more than one edge condition is being considered, the smallest edge distance must be greater than or equal to the minimum cb,PI value given in the ESR.

(Equation 20) reference PI Rebar Guide Section 6.6

Hilti Method Shear Dowel - Calculation tab The shear dowel Calculation tab offers the following options:

Approval


Design Report

Click on this icon to obtain a design report. Users can input project information relative to the shear dowel project. The field titled Report name must be filled out in order to generate a report.


Part 1 of the report includes the following information: - Hilti adhesive product that has been selected. - post-installed reinforcing bar size and type. - ICC-ES Evaluation Service Report for the adhesive product. - Report issue date, and date when the report expires. Data used for PROFIS Rebar calculations will be based on the data contained in the report having the issued/valid dates shown. - Design method will be noted as “Hilti”. Reference Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE for design provisions. - Base material conditions selected for the application. Parameters include cracked or uncracked concrete, compressive strength, assumed adhesive temperature at the time of installation, assumed concrete temperature at the time of installation. - Installation parameters include the drilling method and the drilled hole condition. Hilti SafeSetTM technology is a proprietary system. Reference the Design Guide section titled Hilti Method Shear Dowel Main Screen View - Products pane regarding how to access product information. - The parameter λ is a reference to the ACI 318-11 factor for lightweight concrete. PROFIS Rebar calculations using the Hilti Method do not consider lightweight (low density) concrete. The parameter λ will be shown = 1.0 for both U.S. and Canadian design using the Hilti Method.

Part 2 of the report shows a generalized illustration for a Hilti Method shear dowel application.

Part 3 – Post-installed reinforcement – shear friction in tension This section of the report includes information specific to post-installed shear dowel calculations using the Hilti Method. Additional explanations are shown in red. Canadian user reports will show results in SI units. Equations are referenced to Part 6.6 of the Hilti North America POST-INSTALLED REINFORCING BAR GUIDE (PIR Guide). This brochure can be viewed as a flipping book, or downloaded as a pdf via the following Hilti On Line link: Hilti Rebar Design Center. Go to the link titled Post-Installed Reinforcing Bar Guide.

→ sb,PI,X

→ cb,PI

input value

Shear dowel design using the Hilti Method: * input a value for le . * input the factored load Vu. * PROFIS Rebar calculates φVn using the PIR Guide parameters. * if φVn > Vu bar can be installed at le. * if φVn < Vu try a deeper le.

PIR Guide , page 34

τk,cr or τk,uncr from product ESR

→ sb,PI,Y

PIR Guide , page 34, Equation 19



input value

PIR Guide , page 34, Dowel Embedment table

PIR Guide , page 34, Surface Roughness table


Part 4 – Required drilled hole length This section of the report shows installation parameters for post-installed shear dowels designed using the Hilti Method.

Specification Text



General Notes Text


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