Fireproof coating structure, fireproof material and fireproof coating method for pipe insertion parts in steel beams

摘要

PROBLEM TO BE SOLVED: To make it possible to easily subject a piping insertion part of steel beam to fire resistive covering even when conducting piping work prior to fire resistive covering processing of steel beam, and to flexibly treat a deviation of piping.SOLUTION: Fire-resisting fillers 30, 30 have a penetration part 32 through which piping 20 penetrates, and a notch 37 which connects between the penetration part 32 and an outside edge 36 of the fire-resisting fillers 30, 30. The fire-resisting fillers 30, 30 are fitted to the piping 20 along the notch 37 on both sides of web 12, and sandwich the web 12 from both sides in the state where the piping 20 is accommodated in the penetration part 32. Fire resistive covering material 40 has a penetration part 41 which is formed at the position corresponded to the penetration part 32 of the fire-resisting fillers 30, 30 and through which the piping 20 penetrates, and a notch 45 which connects between the penetration part 41 and an outside edge 44 of the fire resistive covering material 40. The fire resistive covering material 40 is fitted to the piping 20 along the notch 45, and coats a pair of fire-resisting fillers 30, 30 in the state where the piping 20 is accommodated in the penetration part 41.SELECTED DRAWING: Figure 7