The hollow core slabs are manufactured on long-line beds that are typically 120 – 150 meters long.They can be either extruded or slipformed. The units may be manufactured with a thermal insulation layer on the under-side—for example, for floors at ground level. The slabs are cut to length using a circular saw.
The nominal width of the units is 1200 mm. The various cross-sections are given alongside. Their thickness is 120-500 mm and casting width 1.2–2.4 m. Excellent load-bearing capacities and longer spans give freedom to architectural and structural design.
Application: Floors for both commercial buildings and homes. It can also be used as a roof or a wall element, for example, in storage buildings or as a fence element.
Due to pre-stressing, the hollow core slab can span up to 23 m, easily in the range of 5.0 to 10.0 m for typical residential buildings. The number of vertical structural components, like column-beam or structural walls, can be reduced substantially using the pre-stressed hollow-core slabs.
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