| 摘要 |
PURPOSE:To decrease the weight of a concrete floor as much as possible and reduce a load applied on a base, by a method wherein light-weight members are bonded to places except a place on the base, on which a receiving body for receiving wirings is installed, while the light-weight members are covered by the concrete floor. CONSTITUTION:In a concrete floor, receiving wirings under the floor, a receiving body (wiring duct) 2 for receiving wirings is laid on a base 1 consisting of a slab concrete. Light-weight members 3 are bonded onto the base 1, on which the receiving body 2 is not laid. The light-weight members 3 are covered by plain concrete to form a concrete floor 4, flush with the upper surface of the receiving body 22. According to this method, the weight of the concrete floor 4 may be reduced and the remarkable increase of the strength of the base may become unnecessary. |
