How to determine that you need the Strip Foundation?

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The most common kind of foundation is by far the Strip foundation. As the name suggests, a strip foundation is a concrete strip that extends beneath all load-bearing walls. The allowable bearing pressure of the earth and the building load define the width of the strip. The strip has to be long enough to lay flat. Broader foundations will be required to distribute the weight across the required ground surface due to weaker soils and greater loads. Depending on the soil characteristics, the depth will also vary. It is important to bury the foundation deeply enough in clay soils, for instance, in order to shield the structure from volume variations caused by the periodic movement of trees in the surrounding area.