How deep should the foundations be when building a single or double storey structure?
A. The depth of the foundations will be determined depending on the soil and the loads that are to be exerted on the structure. However, in most cases when constructing a single or double storey residential structure, a 6 or 8 inch slab would be used together with a 6mm or 8mm BRC fabric reinforcing mesh. There would be 2 layers of mesh; one 2 inches from the bottom of the slab and one 2 inches from the top of the slab. The concrete used would have a high rating such as C30 or C35. This is used because of its high crushing strength. For larger multi-storey structures, column bases would be incorporated every 7m and to further reinforce the structure a reinforcing ring beam of 18 inches x 18 inches would be used– this also has a BRC reinforcing mesh inside. The structure would be designed so that it transfers loads into the column bases this is done by using diaphragm walls.
A. The depth of the foundations will be determined depending on the soil and the loads that are to be exerted on the structure. However, in most cases when constructing a single or double storey residential structure, a 6 or 8 inch slab would be used together with a 6mm or 8mm BRC fabric reinforcing mesh. There would be 2 layers of mesh; one 2 inches from the bottom of the slab and one 2 inches from the top of the slab. The concrete used would have a high rating such as C30 or C35. This is used because of its high crushing strength. For larger multi-storey structures, column bases would be incorporated every 7m. To further reinforce the structure a reinforcing ring beam of 18 inches x 18 inches would be used– this also has a BRC reinforcing mesh inside. The structure would be designed so that it transfers loads into the column bases this is done by using diaphragm walls.
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