| abstract |
Provided is a structure for a pass-through section in a fire protection compartment, the structure possessing superior fire resistance properties and superior sealing characteristics between expansion residues of a thermally expandable fire-resistant sheet subsequent to exposure to heat from a fire or the like and a pipe or the like therein, even in cases wherein a sleeve is not used. The aforementioned structure of the pass-through section in the fire protection compartment is provided with a pipe or the like inserted into a compartment pass-through hole provided in a partition section of the structure, heat insulating material disposed around the pipe or the like, and a thermally expandable fire-resistant sheet installed between the pass-through hole and the heat insulating material. The structure of the pass-through section in the fire protection compartment is such that: the gap between the pipe or the like and the pass-through hole is either sealed with the heat insulating material and the thermally expandable fire-resistant sheet or is instead sealed with the heat insulating material, the thermally expandable fire-resistant sheet, and a seal member; the thermally expandable fire-resistant sheet is at least provided with a metal foil layer, a thermally expandable resin layer, and an inorganic fiber layer from the side of the heat insulating material. |