FLOOR STRUCTURE SYSTEM FOR STEEL CONSTRUCTION BUILDING

PROBLEM TO BE SOLVED: To provide a floor structure system for a steel construction building, particularly a floor structure system improving comfortability by improving a vibration-based fault. SOLUTION: The floor structure system includes a plurality of steel beams 3 erected between mutually facing girders 2, 2 of the steel construction building, and concrete slabs 4 constructed thereon. The respective steel beams 3 have the same height, and only the steel beam 3' in a position at the floor center where the vibration-based fault tends to occur, is installed lowered in the erection height position. The lower face side of a portion, abutting on the steel beam 3' lowered in the erection height position, of the concrete slab 4 bulges downward by the lowered dimension (h) of the erected position of the steel beam 3' to increase the thickness. COPYRIGHT: (C)2011,JPO&INPIT