| 摘要 |
PROBLEM TO BE SOLVED: To provide an execution method capable of assembling a buried type piping box having a fixed resistive construction by covering with a fire-resistive plate on the bottom wall of a box body when a slab is molded by using permanent forms for a flat deck or the like. SOLUTION: A placing frame 3 is installed onto the flat deck 1 for molding the slab, concrete is placed on the outer circumferential side of the placing frame 3 and the slab 4 is molded, the flat deck 1 in a region in the placing frame 3 is cut and an opening 2 is formed, the fire-resistive plate 11 and the box body 10 are housed in the frame 3 and the box body 10 is arranged on the fire-resistive plate 11, the box body 10 is fixed onto the frame 3, and a plurality of piping pipes A, B, C and D are penetrated to the fire-resistive plate 11 and the bottom wall 10a of the box body 10 from the lower side of the opening 2 of the flat deck 1 and inserted into the box body 10 and clamped to the box body 10.
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