Expansion or contraction joint for concrete - has pair of angled arms supporting separation piece on which is mounted height adjustable lath

摘要

The joint consists of a separation piece (7) together with a pair of angled arms (6,8) for holding and guiding this piece while above the separater is a regulating lath (10) with a nut (13) permitting the regulation of the height of the lath. A second lath is fixed to the first and has a thickness equal to the vertical contraction of the joint. The thickness of the separation piece is equal to the joint width and it is held and guided by a caging of the differential settlement reinforcement (3) to the transverse reinforcement (4,5) using connecting bars (9).