| 摘要 |
<p>Using a deck plate (20) where truss bars (3) are welded, at an appropriate interval, to the substrate (2) of a thin steel sheet and a upper end bar (4) and a lower end bar (5) are welded to the truss bars (3), a columnar void form (1) made of foamed resin having an elliptical cross-section and having grooves in the opposite side faces is pushed into the truss bars (3) and secured, thus preventing the void form from floating. The substrates (2) are connected on the outside of a building and assembled into a required size and the assembly is carried into a building and installed by means of a crane. Thereafter, concrete is placed to construct a void slab, whereby construction is executed quickly.</p> |
