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Substructure (engineering)

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The substructure of a building transfers the load of the building to the ground and isolates it horizontally from the ground. This includes foundations and basement retaining walls.[1] It is differentiated from the superstructure. It safeguards the building against the forces of wind,uplift,soil pressure etc.It provides a level and firm surface for the construction of superstructure.It also prevents unequal or differential settlement and ensures stability of the building against sliding,overturning,undermine due to floodwater or burrowing animals.

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