Builders benefit from the fact that they often use up to 20% less concrete and steel when building a waffle slab foundation. With waffle foundations, there is no trenching or off-haul of soils required. These problems often result in windows that won’t open, doors that won’t close, cracks in the wall, and foundation failures that require expensive repairs.Īnother advantage of waffle slab foundations over ribbed slabs are their efficiency with regards to time and materials used. Waffleboxes are 8.5 or 12-inch forms made of recycled plastic that are easily placed, securely fit together, and provide a void space for expansion of soils.Īs opposed to the outdated alternative of in-ground rib slabs, a waffle slab foundation is able to accommodate expansion and movement of soils that are otherwise known to cause major structural problems in building foundations.
One of the most popular style of these forms are known as Waffleboxes. Waffle slab construction process is done by pouring concrete over void forms made from Styrofoam or plastic boxes.
A Waffle Slab Foundation, also known as a ribbed slab foundation, is an above-ground concrete foundation that is designed to withhold incredible load-bearing capacity for single family, multi-family, and light commercial structures.Ī concrete waffle slab foundation is recommended for any structure built in regions that experience expansive, rocky, or hydro collapsible soils.
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