Refilling of earth in the building portion up to the required height according to the plinth level.įig.4: Concrete and Brickwork in Foundation Refilling Foundation Design Precautions.Lay the footing in case of raft or column construction.Excavation of earthwork in trenches for foundation.The processes executed in the foundation works are given below: The width of the footing should not be less than 1 meter for one and a half brick wall. The width of the footing should not be less than 75 cm for one brick thick wall.For light loaded buildings such as houses, flats, school buildings, etc, have not more than two storeys, the width of the foundation is given below: The width of footings should be laid according to structural design. Hence the best-recommended depth of foundation is from 1.00 meter to 1.5 meter from the original ground level. To allow removal of topsoil and variations in ground level. The minimum practical depth of foundation should not be less than 50 cm.Depth of frost penetration in case of fine sand and silt.Depth of shrinkage and swelling in case of clayey soils due to seasonal changes, which may cause considerable movements.Availability of adequate bearing capacity.
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