Details the various types of cracks that are relevant to concrete slabs on ground and pavements, describe their symptoms and discusses the main influences. Will enable designers and contractors to take measures which will control cracks. Additionally the publication provides guidance to help diagnose the cause of existing cracks, which is essential if effective and remedial measures are to be specified. While not forms of cracking, the subjects of dusting, delamination of trowelled surfaces and curling are included in the publication, as their causes are very closely related to the reasons for cracking and they may provide the initiation location for various forms of cracking.