control joint
9 years ago No Comments

(pronounced kehn-TROL joynt)

A control joint is a continuous groove that is sawed, tooled or formed in a masonry or concrete wall or floor. The point of the control joint is to regulate the location and amount of cracking and separation that results from the dimensional change of different parts of the structure. Allowing slight, undisruptive movements, control joints minimize the development of high stresses, which, in turn, decreases the amount of significant cracking.