| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an installation structure and an installation method of a bolt for fixing a facility to a roof such as a roof floor on which a waterproof sheet is laid, the installation structure and the installation method of the bolt for supporting the facility on the roof comprising an excellent load bearing capacity and workability and surely maintains waterproof performance. <P>SOLUTION: The installation structure of the bolt for supporting the facility comprises a facility supporting bolt 3 fixed to a bolt support hole 1c, a sealing material bracket 4 which is installed to the bolt 3 so as to cover an exposed base portion of the bolt 3, a cover sheet 5 which is attached to an upper surface of the sealing material bracket and a waterproof sheet 2 of an outer periphery of the bracket as a first sealing material, and a sealing washer 6 which is installed to the bolt 3 so as to cover a bolt inserting portion of the cover sheet and is tightened up by a nut 61 as a second sealing material. The cover sheet 5 secures air tightness between the sealing material bracket 4 and the waterproof sheet 2 of the outer periphery of the bracket 4, and the sealing washer 6 seals a minute gap between the sealing material bracket 4 and the bolt 3. <P>COPYRIGHT: (C)2012,JPO&INPIT |
