TRIPLE CLOSED SECTION STEEL FOR CONCRETE SLAB FORM AND FORM STRUCTURE USING THE SAME

摘要

A triple closed sectional surfaces for a concrete slab mold and an installation structure of the mold by using the same are provided to minimize construction members positioned at the lower part of the mold when the concrete slab is constructed. A pair of rectangular upper closed sectional surfaces are folded leftward or rightward. A lower closed sectional surface makes contact with the upper closed sectional surface, so that the whole shape of a steel member represents a T-type sectional surface. A pair of I-steels(230) are separated from each other by a predetermined distance. The I-steel(230) includes upper and lower flanges(232) and a web(231) coupling the flanges(232) to each other. A plurality of triple closed sectional surface steels are close to each other between the I-steel(230) in parallel. An end portion of the triple closed sectional surface steel is interposed between the upper flange and the lower flange of the I-steel(230).