Preparing a detailed jointing plan before placing a concrete slab on grade even a simple driveway can help minimize random cracking. This article discusses the essential components of and the steps in creating a good jointing plan.
An effective jointing plan should clearly show the locations of all the contraction, isolation and construction joints the slab will require. And in the case of contraction joints, it should also show which joints need to be cut first and the depth of cut. Once the jointing plan is complete, workers can use it to mark joint locations on the slab forms. Using a chalk line and these marks as a guide, they can then draw the joint lines on the freshly placed concrete. These lines will show the jointing crew exactly where to cut the joints and in what sequence.