AF18309 DESIGN GUIDE Threadsure 2threadsure.com.au/.../04/Threadsure-Design-Guide... · It provides...

Technical Data Sheets

ThreadSUREConcrete Anchor Systems

®

®ThreadSURE Pty Ltd | Ph: 1300 418 218 | www.threadsure.com.au

®The ThreadSURE Connection system is Design protected with AUS DSN NO338779 and AUS DSN NO338512 and Trade Mark protected

Threadsure is an Australian Owned Company formed in 2000. Our aim is to develop

innovative products and systems to aid concrete construction. Since the companies

inception we have provided some of Australia's largest construction / formwork companies

products for installation in high-rise construction, with specialisation in monolithic

structures, hospitals and government buildings.

Get connected!

Threadsure provides a complete service to its clients by offering;

Fully engineered and customised connection systemsŸ

Cost effective productsŸ

Technical and Engineering adviceŸ

Detailed connection drawings, including product quantity take-offs Ÿ

Readily available product lines Ÿ

Quality service from experienced and dedicated construction personnel Ÿ

The development of the ThreadSURE® connection systems has been integral in providing building

solutions, approved by leading Engineers and Building Contractors throughout Australia.

Formworkers and steelfixers recommend our systems for their ease of installation. The systems

provide efficient and superior structural integrity.

Threadsure commissions extensive and ongoing product testing by independent

NATA testing facilities;

Quality control Ÿ

Certification Ÿ

Research and development Ÿ

By fostering long term and ongoing partnerships with manufactures and suppliers alike a quality

product is achieved on each and every occasion.

®ThreadSURE System

®ThreadSURE Concrete Anchor SystemsThreadSUREConcrete Anchor Systems

®

1

Doc. Ref: BW/CG 12-20 | Issued May 2017

Systems are customised to achieve any specified spacing or layout for starter bar installation at either central or top and bottom of slab n

The pre-moulded board is customised to achieve all slab depths and cover requirements n

Rebate boards are made of durable HDPE 100% recycled material and are re-usable from floor to floorn

Easy to install systems requiring minimal labour to prepare and strip n

Easy to inspect connection integrity by providing a colour cursor on the starter bar ensuring correct bar depth installation n

OH&S benefits due to decreased risk of lumber spine injury or muscular strain associated with conventional forms of connectionn

Threadsure® is an Australian owned and operated companyn

Research and development of connection system to meet Engineer’s approvals n

Time and labour savings ensuring typical cycle times are achievedn

Connection mark-up drawings are provided for builder/formworker and boards are individually marked to the specific installation detailn

Certified for compliance to benchmark ASTM and ISO standards for mechanical connectorsn

Compliant to Australian standards AS4671, AS4600 and AS3600n

Technical and Engineering advice is available at no cost to client n

Ongoing product testing and product evolution, assures quality control is maintained n

Grout infiltration is minimised by tri-guard system design including O-ring slurry sealant to each connection n



Advantages, Why choose us?

®ThreadSURE Concrete Anchor Systems

2


®


THREADSURESYSTEM N16-200 T&BWITH 600 LONG BARS.



Slab to core connectionnWall to wall connection nPenetration: Tower crane/concrete npump etc

Where to use? The ThreadSURE® systems are ideal for connection applications including:

®ThreadSURE System


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®

Stair landing connectionnPrecast element concrete n

connection

THREADSURESYSTEM N16-200 CWITH 650 LONG BARS.

TYPICAL ADJUSTA BAR CONNECTION TO CORE DETAIL (AC1)

CORE CONNECTION TYPE - [A] CORE CONNECTION TYPE - [B] CORE CONNECTION TYPE - [C] CORE CONNECTION TYPE - [G]

CORE CONNECTIONTYPE - [E] - PLAN


THREADSURESYSTEM 12N20 (24 TOTAL)TOP AND BOTTOM 850 LONG.

THREADSUREN24-200 CENTRAL 1050LONG

THREADSURE2 ROWS TOP AND BOTTOMN24-200 WITH 1050 LONGBARS.

4N20 THREADSURE700 MINIMUM LONG INTOSIDE WALL TOP AND BOTTOM(8 TOTAL) 75 COVER.

3N20 THREADSURE850 MINIMUM LONG INTOSIDE WALL TOP AND BOTTOM(6 TOTAL) 75 COVER.

650

ThreadSURE® connection systems

consist of Spherical Graphite Cast Iron

Anchors, a HDPE rebate former board,

500N grade reinforcing starter bars and re-

usable polyurethane board connector

plugs.

Reinforcement Bar – 'TuffBAR'

The TuffBAR features a 500N reinforcing steel bar compliant to AS/NZS 4671.2001 standards and the

systems Ultimate Tensile Strength has been determined from independent NATA Lab mechanical

testing in accordance with AS1381. All bars are epoxy painted with a colour cursor that guarantees full

embedment depth of the starter bar and onsite inspection guarantees every starter bar in installed to its

fullest extent.

ThreadSURE® systems ultimate concrete breakout strength is calculated from the ACI

(American Concrete Institute) method for concrete anchorage strength as specified in section

AS3600.

Rebate Board The HDPE rebate board is customised to the Engineer's specified spacing and starter bar

layout. It consists of a re-cycled material and is resistant to petrochemicals and heat ensuring

its durability and longevity. The length of each board is typically 1.2m in length but can be

adapted at the installer's requests. Each board has three board release half nuts installed to

assist with the stripping of the rebate former after pour.

These are also manufactured from recycled materials and are durable and re-usable from floor

to floor. The O-ring initiative provides a pipe seal around the mouth of the Ferrule during

concrete pour and inhibits any grout/slurry intrusion.

ThreadSURE



System and Components

Ferrules

Polyurethane Plug and O-ring Sealer

System available in:

12mm, 16mm, 20mm, 25mm and 32mm


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®


®The ThreadSURE System consists of a Spheroidal Graphite Cast

Iron Ferrule Anchor, a 500N Grade reinforcing bar and a HDPE re-

usable rebate former board.

The System is used for connection between Core Walls and Floor

Slabs, Core Walls and Beams and around Stairwells and Landings.

It provides concrete anchorage to develop the full capacity of 500N

Grade reinforcing bar to that of conventional hooked bars.

Design Element Variables System Specifications

Starter Bar Length Cut to size to satisfy reinforcement 12mm – 600 mm(500 N Grade Material) development and lap splice lengths 16mm – 650 mm when calculated in accordance with 20mm – 850 mm AS3600-2009. 25mm – 1050 mm 32mm – 1500 mm

Couplers/Threaded Inserts Designed to AS4671 requirements 12mm – High Tensile 16mm – High Tensile 20mm – High Tensile 25mm – High Tensile 32mm – High Tensile

Installation Methods HDPE re–usable Rebate former boards are manufactured to the specific design depth of the slab and either attached to the shutters or tied off to the surrounding bar reinforcement Nailing Plate 12/16/20/25/32mm Fixed to face of formwork

Load Capacities *Concrete Strength (MPa): f'c –characteristic compressive strength of concrete. *Embedment Depth: Determined by ferrule installation methodology. *Anchor Spacing: Load reduction factors applied for scheduled spacings (see design table here in) *Ultimate Tensile Strength: Refer to min ultimate tensile strength characteristic values *A5 3600-2009 CL.14.3 Fixings (D) Design Strength of Bar (KN/M²)

Ferrule Anchors Reinforcement Bar Diameter 12mm – TS 12 Ferrule Anchor AS 1831 – 100% Recycled material. 16mm – TS 16 Ferrule Anchor Tensile Strength 600MPa. 20mm – TS 20 Ferrule Anchor Spheroidal Graphite Cast Iron. 25mm – TS 25 Ferrule Anchor 32mm – TS 32 Ferrule Anchor

Boards 30mm Standard1200mm lengths Board Release key with through half nuts 3 per board.

This method of concrete anchorage also removes the issue of localised

concrete crushing, bar slip and creep at the joint which is often

encountered when using conventional hooked bars and rip boxes, etc.

ɸ= 0.6 times the ultimate tensile strength



(see attached table)


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®The ThreadSURE Connection system is Design protected with AUS DSN NO338779 and AUS DSN NO338512 and Trade Mark protected 6

Diagonal tensile cracking

Illustration 1. At the ends of the beam a combination of vertical and horizontal shears results in diagonal tensile stresses (see diagram below)

Illustration 2. To prevent this diagonal cracking at the ends of beams or adjacent to any support, it is often necessary to either bend up some of the tensile reinforcement or to use stirrups as indicated below.

�

È ÈLoad

Vertical Shear + Horizontal Shear =

Load

ShearForce

Shear

Shear Diagonaltension

As Consultants and Structural Engineers would understand, shear is a combination of vertical and

horizontal forces as shown in the diagram on the right.

This combination forms a stress block, where the forces or stresses are taken as shown. The

reinforcement in the tensile zone takes the force in tension for the horizontal force, and the concrete

section in the compression zone takes the force in compression for the other horizontal force.

The two vertical forces are carried by the concrete section and vertical reinforcement beams.

There are two fatigue tests for mechanical splices under the ISO standard. The high cycle test if 2 million

cycles designed for structures with moving loads i.e. bridges, car parks etc. The low cycle tests are

designed for two levels of earthquake effect, dependant on location of structure and the likely event of

vibration from such action.

Notes on testing of Threadsure Connector

Shear in Concrete

HC - High Cycle Test

LCI - Low Cycle test to 20 cycles only

LC2 - Low Cycle test to 28 cycles only

HLC1 - Low Cycle test to 20 cycles and high cycle test

HLC2 - Low cycle test to 28 cycles and high cycle test

Based on the testing of the mechanical splices and the results obtained, the Threadsure product is given a

fatigue classification as detailed above as HC as the system is not sold or marketed in zones where LC1,

LC2, HLC1, HLC2 testing is necessary.

D Beal Engineer Pty Ltd

DL Beal, BE, MEngSc, MSc (Lon), DIC, RPEQ, FTE (Aust), APEC Engineer

Concrete Technologist and Designer

Explanation of the ISO Classification


®


Design Guide


®

Multiplex Constructions 1 William Project Brisbane

BarArea(Ase)

BarArea(Ase)

BarArea(Ase)

BarCentres

(mm)

BarCentres

(mm)

BarCentres

(mm)

Effective AnchorEmbenment

including HDPE.Rebate FormerBoard (hef mm)





Critical edgedistance for

Load Capacityof Bars(mm) (1.5 x hef)





Concretestrength

at28 days(MPa.)

Concretestrength

at28 days(MPa.)

Concretestrength

at28 days(MPa.)

MinimumYield

Strength ofbar (kN)

MinimumYield

Strength ofbar (kN)

MinimumYield

Strength ofbar (kN)

113

201

314

491

804

113

201

314

491

804

113

201

314

491

804

300200150300200150300200150300200150300200150

300200150300200150300200150300200150300200150

300200150300200150300200150300200150300200150

124

151.5

151.5

156

205

124

151.5

151.5

156

205

124

151.5

151.5

156

205

186

227

227

234

307.5

186

227

227

234

307.5

186

227

227

234

307.5

32

32

32

32

32

50

50

50

50

50

65

65

65

65

65

56.5

101

157

245

402

56.5

101

157

245

402

56.5

101

157

245

402

734937805440805440805240916046

9061461016849101684910065501147557

10470531157756115775611475571308665

ReductionFactorfor Bar

Spacing


Spacing


Spacing

0.750.500.380.610.410.300.610.410.300.580.380.290.440.290.22

0.750.500.380.610.410.300.610.410.300.580.380.290.440.290.22

0.750.500.380.610.410.300.610.410.300.580.380.290.440.290.22

Ultimate Concrete BreakoutStrength per Anchor (kN).Nb = kc . c . (fc^ 0.5) . (hef^ 1.5)

ACI 318-11 D.5.2.2 - 2011Cast in Anchors

(Uncracked concrete with reduction factor for bar spacing applied)







30mm thick HDPE. Rebate Former Board - Concrete Strength 32 Mpa 30mm thick HDPE. Rebate Former Board - Concrete Strength 50 Mpa

30mm thick HDPE. Rebate Former Board - Concrete Strength 65 Mpa

BarDiameter

(mm)

BarDiameter

(mm)

BarDiameter

(mm)

N12 N12

N12

ReidBar ReidBar

ReidBar

N16 N16

N16

Bar Bar

Bar

N20 N20

N20

Bar Bar

Bar

N25 N25

N25

N32 N32

N32

ReidBar ReidBar

ReidBar

ReidBar ReidBar

ReidBar


CASE 1 CASE 3

CASE 4

*NOTE: The above are Ultimate Loads for Reinforcement and Concrete Breakout.For Allowable Design Loads Reduction Factors need to be applied in accordance with ACI 318 - 2011



1Doc. Ref: BW/CG 12-20 | Issued May 2017

BarArea(Ase)

BarCentres

(mm)





Concretestrength

at28 days(MPa.)

MinimumYield

Strength ofbar (kN)

113

201

314

491

804

300200150300200150300200150300200150300200150

124

151.5

151.5

156

205

186

227

227

234

307.5

40

40

40

40

40

56.5

100.6

157

245.5

402

825541906044906044895945

1026751


Spacing

0.750.500.380.610.410.300.610.410.300.580.380.290.440.290.22




30mm thick HDPE. Rebate Former Board - Concrete Strength 40 Mpa

BarDiameter

(mm)

N12ReidBar

N16Bar

N20Bar

N25

N32

ReidBar

ReidBar

CASE 2

*SEE NOTES BELOW

*SEE NOTES BELOW *SEE NOTES BELOW

*SEE NOTES BELOW


*NOTE: The above are Ultimate Loads for Reinforcement and Concrete Breakout.For Allowable Design Loads Reduction Factors need to be applied in accordance with ACI 318 - 2011



2Doc. Ref: BW/CG 12-20 | Issued May 2017

The construction applications and details provided in this literature are indicative

only. In every case, project working details and load carrying capacities should

be entrusted to appropriately qualified and experienced persons.

While every care has been exercised in the preparation of this document to

ensure that any advice, recommendations or information is accurate, no liability

or responsibility of any kind is accepted in respect of the use of the Adjusta

Connector System.

All calculations are taken from formulas in ACI-318 2011 and can easily be

verified by engineering consultants. The loads given in these tables are Ultimate

Loads and the appropriate reduction factors for various effects need to be

applied to obtain Safe Working Loads. Situations where combined loads are

applied to the connector should be fully designed on a case by case basis as per

the requirements and examples of ACI-318 2011 to ensure ductile behaviour at

failure.

Structural Engineering Advice

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