M~CALL ENGINEERING, LLC Structural Engineering · Engineering Methodology: This product was tested...
Transcript of M~CALL ENGINEERING, LLC Structural Engineering · Engineering Methodology: This product was tested...
FBPE# 26008
6389 Tower Lane M~CALL ENGINEERING, LLC TEL: [941 ]379.6986 Sarasota. FL 34240 FAX: 379.0536Structural Engineering
PRODUCT EVALUATION REPORT
February 1, 2011
Product Manufacturer: Building Performance Americas USA, Inc. Manufacturer Address: 9415 Discovery Terrace #202
Bradenton, FL 34212
Product Name: BPA Claw and Strap Product Description: Retrofitted truss/rafter tie-down with an upper piece that grabs over the top of
the truss/rafter and a tail piece, which connects the top piece to the wall below. Any code compliant strap rated to at least a design load of990 lb (1.0 duration factor) can be used with the BPA Claw.
Application Number: FL# 14439
SCOPE OF EVALUATION:
This Product Evaluation Report is being issued by McCall Engineering, LLC, in accordance with the requirements of the Florida Departnlent of Community Affairs (Florida Building Commission) Rule Chapter 9B-72.70 for Product Evaluation and Quality Assurance for State Approval. The Code Compliance Method being followed is Method 1d.
The product listed above has been tested and/or evaluated as summarized in this report to show compliance with the 2007 Florida Building Code, and is, for the purpose intended, at least equivalent to that required by the Code. Re-evaluation of this product shall be completed as required following pertinent Florida Building Code modifications or revisions.
Design Load Rating:
Maximum Design Load Rating 990lb (duration factor of 1.0)
SUBSTANTIATING DATA:
Test Reports: The testing and subsequent report were completed and/or prepared by Fenestration Testing Laboratory, Inc. located in Medley, FL. This test report, dated February 3,2011, and numbered FTL-l 0051, is an integral part of this evaluation report.
John K. McCall, PhD, PE FL PE 17201 02/24/11
Product Installation Instructions: Drawings and instructions signed, and sealed by John K, McCall, PhD, PE of McCall Engineering, LLC, are included as data in support of this report.
Engineering Methodology: This product was tested in accordance with ASTM (American Society for Testing and Materials) DI79I-88 (2000) in addition to details outlined in the Test Method for the Claw as attached in Appendix A.
Testing was performed to a wood beam substrate and calculations were performed, as provided in Appendix C, to determine the number of fasteners to concrete and masonry substrates.
The allowable design load provided in this report was determined by dividing the lowest ultimate load (2980 lb) per joist connector by 3.0 since less than six replicates were tested as described in ASTM D7I47-05 Section 13.3.1. The duration factor is 1.0.
INSTALLATION:
The subject product shall be installed in strict compliance with the Installation Instructions included as supporting documentation with this Evaluation Report. All components or connections related to this product shall also be installed accordingly.
This product component shall be of the material specified in the Installation Instructions and verified by the results of the testing, disclosed in the Testing Report. All relevant documents have been included with the product approval application.
LIMITATIONS AND CONDITIONS OF USE:
Use of this product shall be in strict accordance with the Evaluation Report, Installation Instructions, and all other supporting documentation as noted herein. All supporting host structures shall be designed to resist all superimposed loads and shall be of a material listed in each product's respective guidelines.
Individual project usage of this product shall be designed on a site-specific basis by a registered professional engineer.
CERTIFICATE OF INDEPENDENCE:
John K. McCall of McCall Engineering, LLC (the Engineer) does not have nor will acquire any financial interest in Building Performance Americas USA, Inc., nor in any other manufacturer or distribution entities affiliated with the above-named product for which an evaluation report or validation certification has been prepared.
The Engineer in not owned, operated, or controlled by the manufacturer or distributor named herein and does not have any financial interest in any other entity involved in the approval process of the abovenan1ed product. \ \ ~ , Q I I , f , , I
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Test Method for the Claw January 31, 2011
INTRODUCTION Testing shall be done in accordance with ASTM D1761-88(2000) in addition to details as outlined in this test method.
1. SCOPE
This test method outlines the testing procedure for evaluating the strength of the claw, which is a retrofitted truss/rafter tie-down (see Figure 1). The claw assembly consists of an upper piece that grabs over the top of the truss/rafter, a tail piece which connects the top piece to the wall below, and a lag screw which connects the two while also holding the upper piece in place. This test serves as a basis for the development of design criteria.
2. SUMMARY OF TEST METHOD Refer to ASTM D1761-88(2000), Section 46 (No Torsional Moment).
3. SIGNIFICANCE AND USE
The data collected as a result of this test method will be used to determine the strength of the claw as a system that connects a wood truss or rafter to a wood wall/beam below. Calculations can then be performed to obtain the allowable loads for other materials such as concrete and masonry.
4. APPARATUS
Testing Machine and Displacement Gage as summarized in ASTM D1761-88, Section 44.2. A linear transducer shall be used to measure deflection.
5. SPECIMENS AND TESTS
5.1 General – Wood members shall SYP #2 or better. Samples shall be selected, and the hardware shall be positioned, in such a way that the results are not affected by knots or other natural or manufacturing characteristics.
5.2 Testing – A total of (3) tests as shown in Figure 2.
6. CONDITIONING Wood specimens to be well seasoned. Samples shall be stored in accordance with ASTM D1761-06 Section 27 with a moisture content of approximately 12%.
7. PROCEDURE
Test Setup – Refer to Figure 2 of this proposal. Steps for installing the claw include positioning the strap in between the joist/truss and top piece of the Claw, hammering in the Claw, drilling the pilot hole and installing the 3/8” diameter x 1.5” lag screw in the joist/truss, and installing nails to attach the strap to the wood beam. The top piece of the Claw is to be placed outside of the strap. The deformation should be measured as outlined in ASTM D1761-88(2000), Section 44.2. Speed of Testing shall be in accordance with ASTM D1761-88(2000), Section 48.1.3. Determine the specific gravity and moisture content of each wood member tested.
8. REPORT
The report shall be per ASTM D1761-88(2000), Section 50.
Official Test Report
Test Method
The test samples were tested on a SATEC Universal testing machine. Specimens were conditioned in a room haVing
controlled temperature of 68 ± 6°F and a controlled relative humidity of 65 ± 3%. The claw and strap were tested in
accordance with Sections 41-50 from ASTM D1761 "Standard Test Methods for Mechanical Fasteners in Wood".
Specimen consisted of a 2" by 6" SYP #2 wood simulating a wood rafter and a 2" by 12" SYP #2 wood simulating
the substrate. The moisture content measured 13% on test date. Samples consisted of a 10 gauge galvanized claw
and a 10 gauge galvanized strap. See attached marked up drawings for dimensions 9f claw and strap. The claw was
fastened through the strap and into the wood rafter using one 3/8" by 1 1/2" hex head lag screw with a 3/8" I.D
washer. The strap was fastened to the wood wall using (12) 10D nails. The wood rafter was secured onto the test
base plate and the load was applied to the wood wall at a rate of 0.35" per minute until failure. The deformation
was measured on the wood wall at each end while the load was being applied. Deformation location (a) left side of
wood wall, location (b) right side of wood wall.
Test Results
Samples Ultimate Uplift Force Observations
A1 2980 pounds Wood rafter ruptured at claw 90° see picture below
A2 3302 pounds Wood rafter ruptured at claw 90° see picture below
A3 3108 pounds Wood rafter ruptured at claw 90° see picture below
Average 3130 pounds
Quality Accuracy Assurance
Fenestration Testing Laboratory, Inc. .8148 N.lv. 74th Avenue Medley, FL 33166 Phone: (305) 885-3328 Fax: (305) 885·3329 (888) 819·7877
.. . #. /- e-mail: [email protected] ; _~;; -..: v" -. '+J ,,~" "\:~
Engin"eer: Mr..~Marlin ..D. Brinson P.E. F1orlda:L' -s~ ~~r: 6(5749- / ",. ....., /".
Manufacture: Building Performance America USA Inc, ,
Address: 9415 Discovery Terrace #202 Bradenton, Florida 34212
Report Date: Completion Date: Expiration Date: File Number: Auth Number: Page: Lab Number: Project Number:
Specification: ASTM D 1761-88(Reapproved 2000)
Project: Miami Dade County
2/3/2011 2/3/2011 2/3/2021
11-709 FTL-10051
10f4 6438
11-2729
II1II
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EngFieer: Mr;M~rfj;':D. Bri';s'on P.E. , - .. ',., . .....,- ~lorida'Lice - Ntlmoer: 60749
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Pictures
SampleA-l
SampleA-2
Report Date: Completion Date: Expiration Date: File Number: Auth Number: Page: Lab Number: Project Number:
2/3/2011 2/3/2011 2/3/2021
11-709 FTL-10051
2of4 6438
11-2729
Picture of failure "failure was identical on all three samples"
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· . .- '.' ...~ . ..". - ..., '~' ~ Engineer: Mr. Marljn~D. Brinson'p.E.
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Florida. License , ber: 60749 ,,- .;- - .
Sample A-3
Report Date: Completion Date: Expiration Date: File Number: Auth Number: Page: Lab Number: Project Number:
2/3/2011 2/3/2011 2/3/2021
11-709 FTL-10051
30f4 6438
11-2729
Report Date: Completion Date: Expiration Date: File Number: Auth Number: Page: Lab Number: Project Number:
Remarks
Test results obtained represent the actual value of the tested specimens and do not constitute opinion, endorse
ment or certification by this laboratory.
This test report is cons!dered the exclusive property of the client named herein and is applicable to the sample
tested. This report may not be reproduced without the approval of Fenestration Testing Laboratory, Inc.
Representative samples of the test specimens will be retained.by Fenestration Testing Laboratory for a period of
five years from the original test date, and test report for a period of ten years.
Testing was conducted as per instructions received from your company representative and Miami Dade test pro
posal file number 10-1332 approved by Mr. Carlos Utrera, P.E. with Miami Dade County Building and Neighbor
hood Compliance Department.
Revision Description Effective Date Author
0 Initial Release 2/10/2011 Mr. Jose Sanchez
1 Corrected the ultimate value on sample A-3 2/16/2011 Mr. Jose Sanchez
Witnessed by: Mr. Marlin D. Brinson P.E.
Fenestration Testing Laboratory, Inc.
Technician:
Mr. Jose Sanchez
2/3/2011 2/3/2011 2/3/2021
11-709 FTL-10051
4of4 6438
11-2729
Attachments (pages): This test report is complete only when all attachments listed are included.
Appendix "A" Graphs
Appendix "B" Drawings
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Appendix IIAII
3500
3250
2750
2500
2250
:;:- 2000 .c :;; 1750 tu
.9 1500
1250
1000
750
500
250
o o 0.1 0.2 0.3
Crosshead Position (in)
0.4 0.5
, --f-
-_.+:=~
_-:t=:::=-~
- '--- ----'--.. _
- ._-f--
_.- ._~-
.. - ---_.- -_._
--~-
- ~...+ .+.~:::.
-+---_.~:=;
--t" ••.. t---" ..._-
I Load (Ibf) Deformation (a) I Deformation (b) I
200 0.003" 0.004"
400 0.008" 0.007"
600 0.014" 0.016"
800 0.023" 0.025"
1000 0.029/1 0.033"
1200 0.036/1 0.037"
1400 0.048/1 0.052/1
1600 0.079" 0.085/1
1800 0.110/1 0.112"
2000 0.125" 0.128/1
2200 0.148" 0.151/1
2400 0.191/1 0.198"
2600 0.258/1 0.263"
2800 0.301/1 0.318"
2980
0.6
--
I
3250
3000
2750
2500
2250
-g 1750 .9 1500
1250
1000
750
500
250
o o 0.1 0.2 0.3 0.4
Crosshead Position (in)
- -F+=--;::':::.::.t-- r- , ---- :---,.-
··--+-·-:----1 -..::..~ - -.- ~+-~~..:::...:L---:t:=
-
--'--
0.5
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.. -1
-t-...
-.
-,-1
,
.-=-...!....... l .._~
0.6 0.7
Load (Ibf) I Deformation (a) I Deformation (b) I
200 0.002" 0.002"
400 0.005" 0.006"
600 0.011" 0.013"
800 0.023" 0.025"
1000 0.039" 0.041"
1200 0.048" 0.054"
1400 0.068" 0.072"
1600 0.095" 0.093"
1800 0.109" 0.113"
2000 0.129" 0.126"
2200 0.160" 0.165"
2400 0.189" 0.192"
2600 0.201" 0.198"
2800 0.257" 0.264"
3000 0.271" 0.276"
3200 0.337" 0.346"
3302
/
---
3500
3250
3000
2750
2500
2250
~ 2000
"'C 1750 0 ~
..... 1500
1250 .-4- : ..L-_
-+--+--+. -:t=t::::::t= _~ _.___ 1000
:._~-
----+---1:: .+--:~-='--t-----750
..::l__=-f:::---J f-500 . ---+_:1: .t:=
--~+_.::
250 _ _..L.- __. ._._-~F~l·~- -- f- _. -- - ••
0
~--i- +---
!---
o 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Crosshead Position (in)
I Load (Ibf) I Deformation (a) I Deformation (b) I
200 0.001" 0.003"
400 0.004" 0.004"
600 0.014" 0.016"
800 0.026" 0.025"
1000 0.041" 0.045"
1200 0.046" 0.049"
1400 0.062" 0.065"
1600 0.083" 0.086"
1800 0.105" 0.102"
2000 0.139" 0.143"
2200 0.196" 0.190"
2400 0.220" 0.226"
2600 0.239" 0.242"
2800 0.295" 0.303"
3000 0.336" 0.344"
3108
,/
John K. McCall, PhD, PE FL PE 17201 02/24/11
APPENDIX C Anchor Calculations for
Concrete and Masonry Substrates
BPA Americas, Inc. McCall Engineering, LLC Claw 6389 Tower Lane
Sarasota, FL 34240
BPA CLAW AND STRAP CALCULATIONS: ATTACHMENT TO CONCRETE AND MASONRY SUBSTRATES:FL#14439
Concrete: Note: Calculations based on a minimum concrete compressive strength of 2000 psi.
Load := 990·1.6·1bf Allowable load with 1.6 allowable stress increase factor. 3
Load = 1.584 x 10 Ibf
Reference: Hilti Kwik-Con 11+ www.us.hilti.com I.
d := -·m 4
Shear capacity for 1/4" diameter, min. embed Vconcrete := 560·1bf·1.33 1.75", min. edge distance 1.5" (6d), minimum
Load spacing 3" (12d) with wind increase. NumberScrewsconc := ---
Vconcrete
NumberScrewsconc = 2.127
Concrete: Therefore, (3) 1/4" diameter Hilti Kwik-Con 11+ anchors are required for an edge distance of 1:5" and minimum spacing of 3", minimum embedment of 1.75".
Masonry (Hollow Block): Note: ASTM Specification C90 Grade N.
Shear capacity for 1/4" diameter, min. embed 1.75", min. edge distance 1.5" (6d), minimum Vmasonry := 400·1bf· 1.33 spacing 3" (12d) with wind increase.
Load NumberScrewSmasonry :=
Vmasonry
NumberScrewSmasonry = 2.977
Masonry: Therefore, (3) 1/4" diameter Hilti Kwik-Con 11+ anchors are required for an edge distance of 1.5" and minimum spacing of 3", minimum embedment
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