| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a closing method of an ALC wall hole, by which fire resistance is secured and burdens of construction work such as room layout change is reduced at lower costs. <P>SOLUTION: A first through-hole 3 is opened on an ALC wall 1, and when the first through-hole is not used, a cylindrical member 2 hollowed out from the ALC wall 1 is inserted to the first through-hole 3, and a fire-resistant joint filler 5 is filled between an outer periphery 21 of the cylindrical member 2 and an inner periphery 31 of the first through-hole 3. Thus, the ALC wall 1 is fire resistant and the first through-hole 3 can be closed. Further, by covering an end face of the cylindrical member 2 with an outer side blind member 6, the trace of opening the first through-hole 3 is hidden. Also, a rod-like member 8 projected from the center of the outer side blind member 6 is inserted to a second through-hole 4 opened at the center of the cylindrical member 2, a male screw 81 at a distal end of the rod-like member 8 and a female screw 71 at the center of an inner side blind member 7 are screwed to hold the ALC wall 1, and the cylindrical member 2 is fixed to the ALC wall 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
