Solid method to the fire compartment and through cylindrical body of fire compartment for

摘要

PROBLEM TO BE SOLVED: To provide a penetration through-type tubular body for a fire protection section and a method for fixing and installing the same thereto capable of decreasing heat conduction either from one side of a tubular body to the other side thereof or from the other side to one side. ;SOLUTION: This penetration through-type tubular body 11 comprises the tubular body 12 with an approximately tubular shape and a slit 16 as heat conduction decreasing means for decreasing heat condition either from one side of the tubular body to the other side thereof or from the other side to one side. A fire protection material 13 is provided on a circumferential surface of the tubular body. The tubular body is structure by connecting two steel tubular members 14 having tubular shapes by spot-welding each of ends together at three positions in a state where each of ends faces each other being apart from. The slit extending along a circumferential direction of the tubular body is formed and provided with the heat conduction decreasing means. The fire protection material expands by heating, forming a fire protection filling material.;COPYRIGHT: (C)2001,JPO