HOLLOW SLAB FORM USING LIGHTWEIGHT HOLLOW SLAB FORM MATERIAL USING NO FASTENER OF FORM UPPER PART AND SWELL PREVENTIVE METAL FITTING OF SLAB STRUCTURAL REINFORCEMENT AND WORK METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To prevent a hollow slab form and a slab structural reinforcement from swelling up by installing a long nut on a steel bar worked in a hook shape according to a shape of a form lower part fastener with a male screw and the slab structural reinforcement.;SOLUTION: A through hole is bored in a floor frame, meanwhile a form fastener 1 with a male screw or an integrally molded form fastener 1 with a male screw for fixing both end male screw-shaped shaft legs to a form fastener is manufactured, and the screw 2 is inserted to be connected/fixed to a long nut 3 of a metal fitting for installing the metallic or hard plastic long nut 3 on a steel bar 4 worked in a hook shape. A hook part of the metal fitting is hooked on an optimal place for preventing swell of an upper end structural reinforcement or a lower end structural reinforcement. The long nut 3 is adjusted so as to always come to a position in a state of being embedded in slab concrete by adjusting a position of the metal fitting and the length of the screw 2 to thereby eliminate removing work of a form upper part fastener after slab concrete placing work to attain efficiency and labor reduction of work.;COPYRIGHT: (C)2000,JPO