The underpinning is an arrangement of supports provided underneath the existing structures without disturbing its stability. The underpinning is required in the following situations:
1. When a building wit deep foundation is to be constructed to an existing buildings.
2) when the settlement of existing foundation has taken place, resulting in serious cracks in the wall.
3) when the basement is to be provided to an existing building.
4) when the existing foundations are to be deepened so as to rest them on soil of higher bearing power.
The underpinning may be carried out by the pit method or pile method.
1. When a building wit deep foundation is to be constructed to an existing buildings.
2) when the settlement of existing foundation has taken place, resulting in serious cracks in the wall.
3) when the basement is to be provided to an existing building.
4) when the existing foundations are to be deepened so as to rest them on soil of higher bearing power.
The underpinning may be carried out by the pit method or pile method.
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