Rebar Couplers

Due to the growing technical challenges faced in the construction industry, traditional methods for rebar splicing, such as lapping or welding, are no longer the best methods.

• rebar couplers are used also for rebars splicing in reinforced concrete construction.

• rebar Couplers not only save steel, but also provide a stronger, faster and safer connection with minimum cost compared to the traditional methods.

• rebar coupler reduces material costs because less rebar is used.

• rebar coupler achieves quicker installation compared to the other splicing method, so it accelerates the schedules for reduced cost and improved efficiency.

- There are many situations where rebar couplers are more practical and cost effective than lap or welded splices:

1- large size bars are used.

2- spacing is not sufficient to permit lap splices.

3- code requirements results in very long lap splices.

4- to satisfy the maximum steel Rft. ratio of columns.

5- members may be subjected to seismic loads.

6- new rebars must be connected to the existing ones.

Lap Splices

The lap splice is created by overlapping two lengths of rebar, then wiring them together to create a continuous line of rebar. Lapping of two rebars means material wastage. Lap splice is not suitable for rebars of more than 36mm in diameter. if the general rules regarding laps cannot be applied in a construction, then rebar coupler should be provided.

Welded Splice

The welded splice is created by welding two Rebars at their ends to produce butt-welded OR lap-welded joint using arc welding technique. we must make a chemical analysis for the rebars to check thier specifications for weld-ability. it is not a commonly used method as it may effect the strength of rebars. so special conditions and rules must be followed for welded splicing.

Mechanical Splice (Rebar Coupler)

Normally mechanical splice uses a metal sleeve (rebar coupler) to connect the two Rebars. rebar coupler performs similar to continuous piece of rebars. rebar coupler reduces material costs because less rebars is used. rebar coupler achieves greater strength compared to the other splicing method. rebar coupler achieves quicker installation compared to the other splicing method, so it accelerates the schedules for reduced cost and improved efficiency.