| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire compartment through-part structure of a hollow wall, which has high reliability, which facilitates construction, and which uses a thermally-expandable refractory block.SOLUTION: A fire compartment through-part structure is characterized as follows: a long body is inserted through a through-hole provided in a hollow wall; a plurality of thermally-expandable refractory blocks are installed between the inside of the through-hole and the long body; at least one of the lowermost-stage thermally-expandable refractory blocks among the thermally-expandable refractory blocks installed inside the through-hole includes a rigid plate; and all the lowermost-stage thermally-expandable refractory blocks have rigidity high enough to bear the weight of the thermally-expandable refractory blocks stacked on the lowermost-stage thermally-expandable refractory blocks. |
