FIRE-RESISTIVE COVERING STRUCTURE AND FIRE-RESISTIVE COVERING METHOD FOR STRUCTURAL MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a fire-resistive covering structure capable of securing a larger diameter and fire-resistance performance for a through-hole provided on a structural member.SOLUTION: A fire-resistive covering structure comprises: a structural member which has a through-hole penetrating from a surface of one side in a predetermined direction to the surface of the other side; a fire-resistive covering material which covers the structural member so that a cladding thickness at an edge face of the through-hole is less than the cladding thickness at other portion of the structural member; and a high heat capacity material which is installed around the through-hole at least either on the surface of the one side or on the surface of the other side in a manner that allows heat to be conducted to the structural member and has larger heat capacity than the fire-resistive covering material.