| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a piping structure provided with a refractory expansible packing capable of filling a clearance, even if generated in the joint part of sheath pipes inserted onto a synthetic resin pipe constructed through a fire preventive area provided in a partitioning part of a building, in the event of a fire and revealing excellent fire resisting performance. SOLUTION: In this piping structure, a thermally expansible packing 4 which forms a fire resisting heat insulating layer 5 by thermal expansion is inserted to the joint part 3 where the sheath pipes 2 and 2 inserted onto the synthetic resin pipe 1 constructed through the fire preventive area provided on the partitioning part of the building.</p> |
