The anchor material for knocking a spiral hole pipe or drain-board in the weak foundation

摘要

The subject innovation relates to a spiral yugonggwan and drain board mounting anchor member.; An anchor member of the present design is any one shape of a cone or pyramid which gradually reduces a projected area from top to bottom, and it takes the lower surface of the steel pipe casing (P) on the inner surface the flow preventing portion (G) of the anchor body having a 11; An upright coupled the lower end to the inner surface central portion of the anchor body (11) is downwardly bent at the upper end portion (B) is bad type hole tolerance coupler (12A) and, in parallel with each other, and the load engaging the horizontal upper and a lower pair of formed ( 12B1) and is composed of any one of the zipper (12) of the pair of coupling rod (12B2) for coupling the drain board consisting of nine (12B) or a one-piece metal fitting (12C) parallel to each other in the vertical direction.; The anchor member of the present design, the low manufacturing cost and easy-to-insert operations for drilling the ball has the advantage always possible to apply regardless of the soil vent.