| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide the fire-protection structure of a zone through portion capable of easily constructing corresponding to the form of a tubular member which is inserted in the zone through portion. <P>SOLUTION: In this fire-protection structure, a through hole is formed at a fire-protection zone 1 formed out of a hollow wall of plaster boards 9, 10, a resin flexible tube 11 is inserted in the through hole, and seal material 15 is filled in a gap between the through hole and the resin flexible tube 11. Besides, the outer periphery surface of the resin flexible tube 11 on one side of a zone through portion 2 is covered with thermal expansion tape 13 to a position having a prescribed length from the wall surface of the hollow wall, and a through hole periphery including the gap between the resin flexible tube 11 and the hollow wall on the same side is shielded by a thermal expansion sheet 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
