A control joint, also known as a contraction joint, is a planned gap or groove in a structure—typically concrete—that allows for controlled cracking due to shrinkage or thermal expansion and contraction. These joints are usually placed at regular intervals in concrete slabs, walls, Granite slabs Etc . (Material Specifications) Stainless Steel 304 or 316 Grade both will use with neoprene support to control Expansion and contraction . Amount will be 970rs per RMT to 1430rsrs per RMT ( Depends on material specification)
