By creating straight-line weakened-planes in concrete, contraction joints “control” the cracking location by inducing cracks at predetermined locations. As slabs shrink due to cooling and ...

We have all heard the saying “concrete ... joint, parallel to the top of the T. Place the second bar parallel to the first bar and 1 inch beyond (see Figure 2). When control joints meet curving ...

For example, clay bricks may be used up to damp proof course level and concrete bricks above ... to expand and contract. Movement joints, also known as expansion, contraction or control joints, are ...