TERWA REBAR CONNECTION COUPLERS. CARES Technical Approval 5058 TA1B

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1 EURO ACCESSORIES TERWA REBAR CONNECTION COUPLERS CARES Technical Approval 5058 TA1B

safe, reliable and efficient method of providing continuity of reinforcement through stop ends and element intersections.

2 Introduction The Terwa Parallel Threaded Coupler is a full bar strength system (the coupling is stronger than the associated rebar, sometimes referred to as a Bar Break connection) allowing a safe, reliable and efficient method of providing continuity of reinforcement through stop ends and element intersections. The adoption of a metric parallel thread on an enlarged bar diameter provides sufficient cross sectional area of material at the joint to outweigh the tensile capabilities of the equivalent diameter reinforcing bar. This attribute means the performance of the coupling at the joint can be ignored in any structural assessment, in turn this makes the adoption of the Terwa couplers over the standard detailed bars a simple exchange. The Terwa Parallel Threaded Coupler System has a full CARES Technical approval, this not only verifies the performance of the system in accordance with BS8110 and EC2 it also provides confidence that the components are manufactured and assembled in a fully audited ISO9001 facility. The female coupler (PSA) is supplied to the customer ready assembled on the reinforcing bar, the length of the bar is generally supplied as a full tension lap length in accordance with EC2, however, where the couplers are being used as a means of removing splicing laps the bars can be manufactured with any available and transportable length of reinforcing bar. There is no requirement for any threading of the corresponding male bars (TSE) as these are supplied prefabricated with the corresponding metric parallel thread. There are no specialist tools required to complete the connection, this can be carried out using a simple open jawed pipe wrench. Euro Accessories can supply a calibrated wrench to ensure the correct torque settings are achieved. Benefits 1 Full CARES Technical Approval. Simplifies shutter design. Reduces damage to formwork. Makes stripping shuttering system easier. Ideal for use in continuous pour processes and jump shutters. Eliminates the need for dangerous projecting reinforcement. No drilling of shuttering materials. Reduces the congestion of rebar at laps. Lack of congestion facilitates easier concrete placement, reducing the risk of voids. No post drilling of concrete in order to expoxy resin fix continuity bars. Provides a full bar strength coupling. Connection made utilising standard metric threads. Accelerates the production process. No requirement for thread cutting or assembling of products. Full tension lap bar lengths available from stock. Fabricated components can be bolted directly to the structure using standard metric threads. No specialist tools required. Increasing the diameter of the bar to cut the male thread. Swaging the female threaded sleeve onto the reinforcement steel.

Applications Stop ends. Stair landings. Cantilevered slabs.

Temporary openings in water retaining structures. Crane voids through slabs.

Provides reinforcement connections for future developments that may tie into the

Quality Assurance Manufactured by Terwa, PSA,TSE and PSC mechanical couplers

TECHNICAL APPROVAL 50 TERWA Mobile Unit Can be placed on site to produce on site

3 Applications Stop ends. Stair landings. Cantilevered slabs. Vertical connections in columns. Column head connections. Wall intersections. Temporary openings in water retaining structures. Crane voids through slabs. Fixing points for additional steel structures and components. Provides reinforcement connections for future developments that may tie into the existing structure. Quality Assurance Manufactured by Terwa, PSA,TSE and PSC mechanical couplers have achieved accreditations as follows. TECHNICAL APPROVAL 50 TERWA Mobile Unit Can be placed on site to produce on site rebar connections. Any rebar length can be coupled. Utilises locally sourced reinforcement steel. Tested and certified accordance with domestic and international norms. KOMO EC Declaration of Conformity FS t

www.euroacc.co.uk PSA Female Couplers Supplied as a straight reinforcement bar with sleeved and swaged female coupler body.

Can also be used in conjunction with nailing plates or threaded inserts to ease fixings to shutters.

4 PSA Female Couplers Supplied as a straight reinforcement bar with sleeved and swaged female coupler body. Generally used in the first pour to allow subsequent addition of male continuity bar in the second pour. Can also be used in conjunction with nailing plates or threaded inserts to ease fixings to shutters. Standard Stock Sizes Product Code Length Thread Dimensions L M (Metric) A D Coupler Dimensions L1 d Reinforcement Steel Tensile Force (kn) Rated Section (mm 2 ) PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA PSA This is the cast in part of the system, it comprises a socket swaged onto a high yield reinforcement bar. The socket area is larger than the bar ensuring that the bar itself is the weakest part of the coupler. Also available in Stainless Steel. 3

TSE Male Couplers Supplied as a straight male reinforcement bar, the threaded portion of the TSE is threaded into the exposed female section of the PSA once the shuttering has been removed.

Standard Stock Sizes Product Code Length Thread Dimensions L M (Metric) A d Reinforcement Steel Tensile Force (kn) Rated Section (mm 2 ) TSE120375 375 16 22 12 56.5 113.0 TSE120575 575 16 22 12 56.

5 TSE Male Couplers Supplied as a straight male reinforcement bar, the threaded portion of the TSE is threaded into the exposed female section of the PSA once the shuttering has been removed. This provides the continuity reinforcement for the second pour. Standard Stock Sizes Product Code Length Thread Dimensions L M (Metric) A d Reinforcement Steel Tensile Force (kn) Rated Section (mm 2 ) TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE TSE Use PSA + PSC Connector for 40mm diameter reinforcement.(see next page) This is the screw in coupler. It has an enlarged threaded end to maximize the bar strength. t

Bolt 16 49 PSA M16 PSC020 PSC Bolt 20 75 PSA M20 PSC024 PSC Bolt 24 83 PSA M24 PSC030 PSC Bolt

in and rotate the threaded PSC Bolt into the PSA Coupler already cast into the concrete.

6 PSC Threaded Connector PSC threaded connector is used for converting PSA couplers into males couplers. Product Code Description Thread Dimensions M (Metric) Lb Coupler Range Type Thread PSC016 PSC Bolt PSA M16 PSC020 PSC Bolt PSA M20 PSC024 PSC Bolt PSA M24 PSC030 PSC Bolt PSA M30 PSC042 PSC Bolt PSA M42 PSC048 PSC Bolt PSA M48 Instructions Place in and rotate the threaded PSC Bolt into the PSA Coupler already cast into the concrete. Mount the second PSA Coupler E P Rotate by hand the second PSA Coupler until the couplers are fastened together. The connection is finished by using a special torque wrench made by Terwa, to tighten the connection. The necessary torque for each type of rebar is shown in the table below. Reinforcement dia. Thread (M) Torque (Nm) TERWA Wrench (available on request) Product Code PSAWR Description Wrench 5

7 Cutting and Bending Service Euro Accessories also offer a Cutting & Bending service for the Terwa Coupler System. The production process is automated through the use of specialised machinery to enable high volume production. Benefits No bending required on site. Eliminates manual handling risks. No site wastage. Quick delivery times. Bent bars from 10mm up to 40mm. Examples PSAB1 PSAB2 TSEB1 TSEB2 PSAB3 TSEB3 Please specify dimensions required M, d, LA, LB and DB. Please specify angle of bend. t

Branches: Euro Accessories Ltd (Head Office) Units 1-3 Shannon Industrial Estate Lodge Road Sandbach Cheshire CW11 3HP t. 0044 845 052 4050 f. 0044 845 052 6575 e.info@euroacc.co.

8 Branches: Euro Accessories Ltd (Head Office) Units 1-3 Shannon Industrial Estate Lodge Road Sandbach Cheshire CW11 3HP t f Euro Accessories Ltd (Southern) Unit 3, Stewart Road Kingsland Business Park Basingstoke Hampshire RG24 8NF t f Euro Accessories Ltd (Ireland) Strokestown Road Roosky Co. Roscommon N41 XW59 Rep. of Ireland t Euro Accessories Product Range: Plastic, Concrete & Wire Spacers Slab Accessories Magnet Systems Cast-in Channel Precast Accessories Screed Rails MAX Rebar Systems Reinforcement Continuity Systems Formwork Systems & Accessories Piling Accessories Lifting & Fixing Systems Double Walling Accessories Chemicals & Sprayers BAG Column Formers

TERWA REBAR CONNECTION COUPLERS

TERWA REBAR CONNECTION COUPLERS CARES Technical Approval 5058 TA1B Introduction The Terwa Parallel Threaded Coupler is a full bar strength system (the coupling is stronger than the associated rebar, sometimes