| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor structure of a precast concrete floor slab, which facilitates installation and demolition, and prevents the generation of bulky waste. SOLUTION: Edges of two opposed sides of the quadrilateral precast concrete floor slab 1 adapted to a module of a building are placed on the top part of a footing beam 2, and fixed to the footing beam 2, in order to constitute the concrete floor. Preferably, a recess 13 is provided in the under surface of the floor slab 1, so as to bring about weight reduction.
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