FIELD: construction.
SUBSTANCE: device for formation of wells for augered piles includes an expander, casing pipes and an impact device. The expander has a cylindrical-conical form with the diameter of the cylindrical part larger than the diameter of casing pipes, inside the cylindrical part there is the left thread for the lower casing pipe, and the conical part is equipped with stiff ribs.
EFFECT: reduced side friction during driving submersion of inventory casing pipes and their withdrawal in process of augered piles body concreting, elimination of soil and soil waters inside casing pipes in process of their submersion.
1 dwg
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