Compensated using a monolithic

* In places where the outer sewer is installed in a prayer surface, along the channel line, the expansion seam must be filled with bitumen or mineral mastic. In the case of installation of areas with large load classes, any dynamic forces acting on the prayer should not have direct influence on the side walls of the canal. These forces must be compensated using a monolithic structure: say, by laying the first three rows of paving stones in a special concrete pillow.