| abstract |
PROBLEM TO BE SOLVED: To provide a fire-prevention section penetration portion structure which can cope with various types of fire-prevention section through-holes, has a simple configuration, is easy to construct, and can reduce the cost. SOLUTION: A to-be-penetrated object such as a pipe 10 penetrates a through hole 5 formed in a partition wall 1 which is a partition part that defines fire protection sections A and B of a building or the like, and is wound around the outer periphery of the pipe 10. And a filler 30 and 31 for closing a gap between the outer periphery of the tape-shaped expansion body and the through hole. A polyethylene plate 35 is further provided as a lid having a shape larger than the diameter of the through hole 5 to close the outside of the filler. [Selection] Fig. 2 |