FIELD: construction; fixture.
SUBSTANCE: concrete insert includes a head and a cylindrical rod with the sharpened end, with two opposite ledges on an outer surface, executed in the form of a spiral. The spiral pitch is equal to length of a cylindrical rod. Ledges are executed benched. The height of each subsequent step of a ledge gradually increases in a direction from the sharpened end to a head. On length of ledges the dimples which total length makes not less than half of total length of a spiral are consistently executed.
EFFECT: increasing of structure reliability and concrete insert load-carrying capacity.
2 cl, 2 dwg
