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Rebar couplers are components which connect two reinforcing bars in longitudinal direction, forming a mechanical splice. This is an alternative to lap splices or welded connections. Mechanical splices are used to avoid protruding bars in casting joints, reduce congestion in confined spaces and to save rebar length.
Coupler to be designed for Fe550 grade. The only tests recommended for acceptance on projects are static tensile tests.
Example :- Fe500 rebar breaking at a stress of 580 N/mm2 is acceptable as per IS 1786 requirement of 545 N/mm2.
In this Specification for Fe500 Rebar is considered acceptable for use anywhere in the structure if meets the ultimate strength of 545 N/mm2 which is much lesser than the 1.25Fy.
In this case, the Condition becomes at least 625 N/mm2 as well.
There are two types of IS Code for testing Coupler Strength
1. IS 1786-2008
2. IS 16172-2014
The conventional old method of connecting reinforcement bars with lap joints continuity in reinforced concrete need not be always appropriate. Advantages of simplicity and economy in lap splicing is limited to smaller diameter bars, mechanical couplers offer the solution for splicing when large-diameter bars are involved like 16, 20, 25, 32,and 40 mm Diameter where huge cost saving can be done.
We are one of the leading manufacturerof parallel-threaded mechanical splicing system designed for the connection of concrete reinforcing bars 16MM to 50MM. “Improving the level of foundation construction technology”. We have a team of skilled professionals and skilled workers with years of experience in foundation engineering and construction services, our products have reached the advanced level in INDIA in terms of the technology and quality. With the latest production facilities and factory we have been able to deliver our range in bulk on time"
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