FIRE RESISTIVE COVERING STRUCTURE OF PIPING INSERTION PART ON STEEL BEAM

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 【課題】鉄骨梁の耐火被覆処理よりも先に配管工事が行なわれた場合であっても、鉄骨梁の配管挿通部を容易に耐火被覆でき、配管のずれにも柔軟に対応できるようにする。【解決手段】耐火充填材３０，３０は、配管２０の貫通する貫通部３２と、この貫通部３２と該耐火充填材３０，３０の外側縁３６の間を繋ぐ切込み３７とを有し、ウエブ１２の両側において切込み３７に沿って配管２０にはめ込まれ、配管２０が貫通部３２に収まった状態でウエブ１２を両側から挟み込み、耐火被覆材４０は、耐火充填材３０，３０の貫通部３２と対応する位置に形成された配管２０の貫通する貫通部４１と、この貫通部４１と該耐火被覆材４０の外側縁４４の間を繋ぐ切込み４５とを有し、切込み４５に沿って配管２０にはめ込まれ、配管２０が貫通部４１に収まった状態で一対の耐火充填材３０，３０を被覆する。【選択図】図７