MOUNTING STRUCTURE FOR FIRE RESISTANT COVER

摘要

PROBLEM TO BE SOLVED: To provide a mounting structure for a dry fire resistant cover for a steel frame beam when a flooring construction method is applied for mounting a deck plate on the steel frame beam and placing a floor concrete. SOLUTION: A deck plate 1 which is formed in a wavy shape of alternately repeated unevenness and with grooves on the backs of inclined webs of protruded streak portions is used. An uneven portion similar to the sectionally uneven shape of the deck plate 1 is formed at the upper edge of a fire resistant board and hanging portions fitted to the groove of the deck plate 1 is formed at protruded portion at both ends, a least. The fire resistant board 6 is arranged along both sides of a steel frame beam 3 and the protruded portions 51 at the upper edges are inserted into the backs of the protruded streak portions 8 of the deck plate 1 to hang the hanging portions fitted into the grooves. Both lower edges of the fire resistant board at both sides are connected via a bottom fire resistant board 6 to cover the steel frame beam 3 with the fire resistant board.