| 摘要 |
PROBLEM TO BE SOLVED: To easily execute blocking-up form installation work at a job site for blocking up mutual ribs under a precast concrete slab end part with the rib.SOLUTION: A precast concrete slab with a rib for a synthetic floor slab is provided by integrally projecting a rib 13 toward the extension direction on an undersurface of a precast concrete slab body 12 forming a plate shape, and blocking-up forms 14 and 15 are integrally molded toward the extension direction in an end part of the precast concrete slab body 12 for closing a space under a precast concrete slab body side edge part between mutual ribs and/or from the ribs, and the blocking-up form is bent to the lower side from a boundary part with the precast concrete slab body 12, so that the end part of the space under the precast concrete slab body side edge part is closed between the mutual ribs and/or from the ribs.SELECTED DRAWING: Figure 1 |
