PROBLEM TO BE SOLVED: To provide a mold for concrete floor plate which can provide longer span length than conventional mold for floor plate even when the height of a truss is the same. ;SOLUTION: A load reducing material 50 in which cut-in parts 51, 51 having smaller groove width than the thickness of a bent auxiliary reinforcing bar 21 are formed is provided in a condition in which a part of a rise part is locked in the cut-in parts between reinforcing structures 40 of a floor plate mold in which the reinforcing structures 40 in which many bent auxiliary reinforcing bars 21 having crest-shaped rise parts 22, 22 are arranged in parallel are fixed in parallel on a floor steel plate 10 for mold. Here, the load reducing material 50 is, for example, a synthetic resin foaming molded product. Consequently, when a concrete floor is constructed, it is possible to reduce an amount of concrete C to be placed by volume of the load reducing material 50 and reduce load of the concrete floor. Accordingly, it is possible to provide longer span length when compared with a case in which conventional floor mold is used even if the height of a truss is the same.;COPYRIGHT: (C)1998,JPO
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