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What is a floating slab?

Floating slabs are used as a foundation for sheds, car garages, additions etc. It's a concrete slab with a deepened and reinforced perimeter but which does not have frost footings. This type of foundation is called a "floating slab" because it "floats" on the soil.

Why use floating slabs? (Floating slab vs. strip footing & frost wall)

Building a floating slab is one of the most economical methods of constructing a foundation. Traditional foundations include a strip footing with a frost wall above. The strip footing is installed below the frost level, usually 4'-0" below grade. The cost of a strip footing and frost wall is alot higher because there is more excavation, concrete and labour required.

Why do I need engineered stamped drawings?

Canadian building codes make it necessary to get engineered stamped drawings for floating slab foundation more than 55 m^2 (538 ft^2) in building area

For more information about engineered stamped drawings read our FAQs.

 
 
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