| 摘要 |
PROBLEM TO BE SOLVED: To realize a hollow pressure slab to which the size of a cylindrical space can be optionally set and moreover slab thickness, the covering thickness of reinforcements, strength in each direction, or the like can be freely set without being restricted by the size of the cylindrical space regarding the pressure slab for supporting a concrete building on the lower side of the lowermost story part of the building. SOLUTION: Concrete is placed in an outside region of each void pipe in the erected state of a plurality of void pipes to construct structure formed with a plurality of vertically erected cylindrical spaces 2. The plurality of void pipes are connected in the erected state to one another to unitize them, and each unit is carried to the site and set. In the connected state between the respective units, concrete is placed in the outside region of each void pipe. A construction period can thereby be shortened. COPYRIGHT: (C)2004,JPO
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