FIELD: construction engineering; reconstruction and restoration of buildings and structures. SUBSTANCE: device has additional foundation member arranged around existing foundation and meant for increasing supporting area. Novelty is that total supporting area of shored foundation is shaped as isosceles trapezium expanding in direction of momentary load action. Area of trapezium A and its largest base bmax are to be found from dependences given in description of invention. Foundation supporting area is enlarged due to effective shoring mainly where space conditions are limited. EFFECT: reduced material and labor consumption. 5 dwg
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