METHOD FOR INSTALLING SCREW-TYPE SUPPORT IN GROUND Russian patent published in 1998 - IPC

FIELD: construction engineering. SUBSTANCE: according to method, preliminary created along axis of installing support is zone of loosened ground and after that screw-type support is driven into ground. Zone of loosened ground is obtained by loosening ground without bringing it to ground surface. Zone of loosened ground in grounds of medium density is made with diameter which is less than diameter of flight of screw-type support by its double width. Zone of loosened ground in dense or frozen grounds is of diameter which equal to or larger than diameter of flight of screw-type support by value equal to its double width. Depth of loosened ground zone is taken as equal to design depth of installing screw-type support. EFFECT: higher efficiency.