PURPOSE: To improve the efficiency of construction, by a method wherein the upper parts of a reinforcing steel frames are directly or indirectly buried in the underside of a RC floor slab and are attached thereto without fireproofing- protection.
CONSTITUTION: The upper flanges 2a of reinforcing steel frames 2 consisting of a plurality of H-beams are directly buried in the underside of a RC floor slab 1, which is integrally incorporated with building frames such as RC columns 'a' and RC girders 'b'. Therefore, since the reinforcing steel frames 2 are attached to the floor slab 1 by burying the upper flanges 2a, the floor slab 1 is effectively reinforced, such a problem that the strength of the reinforcing steel frames 2 is reduced by fire is effectively decreased, and the strength of the RC floor slab 1 can be sufficiently ensured.
NAKANO KIYOMASA
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