ABSTRACT
The specific method suggested for designing the foundations of in-service buildings under reconstruction with increment in loads was worked out in conformity with the requirements of SNiP 2.02.01-83 and the nomenclature of soils as per GOST 25100-82. This method is applicable in the planning of natural bases for residential and industrial buildings but is not applicable for buildings to be erected on sites threatened by landslips and karst. While designing for load increments on building foundations erected in permafrost, collapsible soils, in mining areas etc., the additional requirements in standards and codes applicable to such situations must be considered. While designing residential buildings both the density of disposition of foundations and their mutual interaction are considered. Settlements in residential buildings with a density of foundation arrangement exceeding 60%, are obtained by treating the foundations as a single continuous slab. Increasing the loads on extant foundations of the building under reconstruction leads ultimately to development of additional deformations of the foundation.
