Ribbed and waffle slabs
Ribbed and waffle slabs provide a lighter and
stiffer slab than an equivalent flat slab, reducing the extend of
foundations. They provide a very good form where slab vibration is
an issue, such as laboratories and hospitals.
Ribbed slabs are made up of wide band beams
running between columns with equal depth narrow ribs spanning the
orthogonal direction. A thick top slab completes the system.
Waffle slabs tend to be deeper than the
equivalent ribbed slab. Waffle slabs have a thin topping slab and
narrow ribs spanning in both directions between column heads or
band beams. The column heads or band beams are the same depth as
- Relatively light, therefore less foundation
costs and longer spans are economic
- Speed of construction
- Fairly slim floor depths
- Excellent vibration control
- Thermal mass
- Good for services integration
- Durable finishes
- Fire resistance
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Concrete Framed Buildings