The Terwa Alligator Coupler is a splicing coupler designed to meet the requirements of BS8110 and EC2 for mechanical couplers used to form butt joints in reinforcement steel. They are supplied in a range of sizes to suit the reinforcement steel range 10mm to 40mm inclusive. The system is ideally suited to minimising steel congestion in heavily reinforced structures, providing simple connections for prefabricated reinforcement steel and facilitating the removal and replacement of damaged reinforcement steel in repair contracts.

The mechanical connection is made by inserting the rebar into each end of the coupler and tightening the lock shear bolts by hand, once satisfied that the joint is suitably assembled and aligned, the lock shear bolts are tightened up with suitable impact driver. The bolt heads shear off at the desired torque setting, giving a clear indication that installation is complete and satisfactory.

Rebar Splicing Couplers

From £19.54

Sales Tax Included

Quantity

Reduced steel congestion at joints.

Compatible with smooth round and ribbed reinforcement steel.

Accommodates any variations in the nominal diameter of the bars being joined.

No rotation of the reinforcement steel required.

Tapered profile makes bar insertion easier.

No welded parts or joints used in the manufacturing process.

No threading of the rebar required.

No additional bar preparation required.

Works with conventionally cropped reinforcement steel.

No specialist training or skills required.

Provides the characteristics of a continuous length of reinforcement steel.

Gives a clear indication of correct installation.

Available from stock in the range 10mm to 40mm diameter.

Meets the requirements of BS8110-pt1:1997 and EC2 for mechanical connections in reinforcement steel.

Backed up by CARES Technical Approval TA1-B 5065, up to 32mm.

The CARES technical approval TA2 5072 validates that the manufacturer of the Alligator Splicing Couplers has quality management system in accordance with ISO9001:2015, whilst also ensuring the incorporated reinforcement steel is in accordance with BS 4449:2005, cut and bent in accordance with BS8666. The approval also ensures the reinforcement steel meets a strict set of criteria for reinforcement bars used in reinforcement continuity systems, ultimately ensuring the Alligator Splicing Coupler System performs in a manner which fulfils the requirements set down in BS EN1992-1-1:2004 (EC2).
Step 1:

Slide the coupler on to the end of the first piece of reinforcement steel to be joined. The central stop pin should make contact with the end of the bar to verify the correct insertion length. There is also a viewing hole in the coupler body enabling a visual check of the insertion length. Once satisfied of the insertion length and the orientation of the coupler, tighten the lock shear bolts by hand to stabilise the coupler on the bar. Note: When replacing damaged reinforcement, the central stop pin can be removed from the coupler with a hammer and a steel punch, this allows the entire coupler to slide over the bar when splicing in replacement steel.

Step 2:

Insert the second piece of reinforcement steel into the opposite end of the coupler, ensuring that it makes contact with the central stop pin. Once the second bar is fully inserted the lock shear bolts can be tightened by hand. Check the alignment of the coupler prior to the next stage.

Step 3:

After confirming that the coupler is correctly aligned use an impact wrench to tighten* the lock shear bolts, the bolts should be tightened on one side of the coupler first working from the central stop pin towards the outside edge of the coupler. When each bolt reaches the correct torque setting the head of the lock shear bolt will shear off. Complete this process for both sides of the coupler and all couplers at the joint.

Step 4:

The completed coupling will have all the bolt heads sheared off *, providing a visual indication of correct installation.

*To adequately tighten the lock shear bolts a suitable power tool with a torque capability twice that of the recommended torque requirements of the coupler should be used.

* In instances where the bolt head has not sheared off, normally when fixing with hand tools in confined spaces. To confirm correct installation the torque setting on the bolt should be verified with a suitably calibrated torque wrench.
CARES Technical Approval Certificate No. 5065

DIBT Approval No. Z-1.5-213

KOMO Certificate No. K21098/10

Rebar Splicing Couplers

Advantages

Installation Guide

Accreditations