Uses of Underpinning

Underpinning techniques are adopted under the following situations:

1. To strengthen the existing shallow foundation of a building when an adjoining building has to be constructed with a deep foundation.
2. To safeguard the existing structure from the danger of excessive or differential settlement.
3. To deepen and widen an existing foundation to increase the bearing capacity of the foundation soil.
4. To build a basement floor to an existing building.
5. To lift a building fully or partly to alter the foundation so as to prevent from waterlogging.