To each other

Cracks are of different thicknesses, depths, structuralness and vector. The reasons that affect the change in the state of cracks include: environmental temperature, various static and dynamic loads, the presence of liquids, ice, mud, dust in the cracks. The danger of cracks lies in the displacement of structural elements relative to each other, and this affects the stability of the structure as a whole. Cracks reduce hydraulic — and thermal insulation characteristics of wall structures.