| 摘要 |
<p>PURPOSE:To shorten the construction period, reduce the construction cost and facilitate the additional construction for wiring or piping. CONSTITUTION:A penetration part 2 for inserting a cable wire 7 and a pipe is provided on a floor wall 1 of a fire-preventive zone, and a fire-preventive cylinder frame 3 is installed. Next, seal material 8, 9, 10 comprising inorganic light aggregate, a swelling type layer of silicate, and water kneaded with each other is filled in a gap of a through-hole in a plate 4 of calcium silicate through which the cable line 7 is inserted.</p> |
