FIELD: civil engineering. SUBSTANCE: air-tight screen is installed at lower portion of contact plane between cushioning layer and foundation. Artificial bed is in building foundation. The bed is made of drain material. The bed foot is placed on even surface of construction site and connected through volumetric filter to water discharge passage. Bed thickness is defined using relationship presented in the description. EFFECT: decreased impact of frost initiated swelling to the building or construction with cushioning layer along perimeter using local soil of the height not less than active zone of the swelling and width on the top of not less than freezing depth. 1 dwg
