The length of the wall (walls) is determined by the number of folded brick heads together with transverse joints. The figure shows how to determine the length of the wall and the location of internal walls.
Buildings of considerable length and varying heights will settle unevenly. If the ground under the foundation is homogeneous, then the differences in settlement are smaller than in the case of foundation on soils with different layers. Due to uneven settlement of the building, the walls will crack (scratching). To prevent the formation of cracks in the walls, expansion joints are used. Expansion joints are also used in the case of connecting existing buildings with the newly erected ones, especially if there is a fear of uneven settlement. The connections of the walls of the existing building with the newly erected building are shown in the drawing.
Where there will be no uneven subsidence of the old and new walls, and there, where the load-bearing walls are made first, and the execution of other walls is left for a later period, escaping joints are used, end or lateral.