FIREPROOFING MEMBER FOR COMBUSTIBLE LONG MEMBER PASSING PART

摘要

PROBLEM TO BE SOLVED: To adjust the length of a fireproofing member for a part where a combustible long member passes in a fire limit body 10, according to the thickness of the fire limit body. SOLUTION: Two spirally corrugated metallic cylinders 40A and 40B are linked when threaded into a cylindrical intermediate member 34 with spiral projections 42 on the internal surface. The spiral grooves in the internal surfaces of the spirally corrugated metallic cylinders 40A and 40B store a thermally expandable refractory material 38.