| 摘要 |
A precast concrete floor slab for a structural floor system has a flat floor panel of polygonal form, with a peripheral perimeter beam around the outside of the floor panel and intermediate beams radiating from the centre of the floor panel to the perimeter beam. In use, the slab is supported at its corners on piles, with adjacent slabs being arranged side by side to cover the necessary floor area. No grade beams are required as the perimeter beam of each slab provides the necessary structural strength for supporting the building. The intermediate beams under the slab allow the thinning of the slab to reduce the overall amount of concrete used. The slabs are fastened in place with loops of the slab reinforcement that project from the slab at the corners for connection to the reinforcement of the piles supporting the slabs.
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