Precautionary Measures Before Underpinning

The following general measures should be undertaken before starting the underpinning operations:

1. The existing strength of the building should be ascertained before resorting to underpinning (e.g., inferior material used or use of construction method which is not standard or poor workmanship).
2. Temporary support should be provided by adequate shoring and strutting wherever needed.
3. During underpinning of buildings, a watch on possible movements should be checked and rectified then and there.
4. No damage should be caused to the adjoining structures.
5. It should be ensured that no obstruction is created to the passage of people or vehicles in the adjoining areas.