Location of expansion joints should take into account the need to preserve the integrity of the wall construction. Expansion joints and design have given: – the type of material the item laying on the characteristics strain components caused by humidity – geometric shape design, taking into account the proportion of openings and wall sections – the degree of control – the deformation of masonry in the long and short-term load – deformation of masonry in temperature and climatic conditions; – fire – the requirements for sound and heat insulation, – the presence or absence of reinforcement. Design and implementation of expansion joints should provide the opportunity of distribution of reversible and irreversible deformation without damage to the projected masonry structures. Filed under: Robotics. Expansion joints must go through the entire thickness of the wall or the outer layer of a multilayer walls with holes, or any finishes that are not amenable to distribute the strain. The plane slip expansion joint design in such a way as to slip parts of the structure in relation to each other to reduce the tensile stress and shear stress in adjacent elements (layers) of masonry structures. In the outer walls of the expansion joints are designed so to ensure drainage of water without damaging the masonry or penetration into the building. The distance between the deformation seams horizontal distance between the vertical seams in the outer layer of masonry walls should consider the type of Wall elements of masonry, mortar, and specific construction details. The horizontal distance between the outer vertical seams in the outer non load-bearing layer of the multilayer non-wired walls of masonry shall not exceed lm. Recommended maximum horizontal distance of lm, between the vertical joints of deformation for the external non load-bearing unreinforced layer of multilayer on-ruzhnyh walls: masonry type lm, m: – laying of ceramic bricks and stones – 12 – masonry from silicate rocks and bricks – 8 – perlitobetonnaya laying and egg-cast stone – 6 – masonry Autoclaved lightweight aerated concrete – 6 – masonry Natural Stone -12.