What is underpinning?

Underpinning is a construction technique used to strengthen the foundation of a building or structure. It involves excavating and reinforcing the existing foundation in order to increase its load-bearing capacity. Underpinning may be necessary if the existing foundation is damaged, if the structure is being expanded or modified, or if the soil conditions have changed.

There are several methods of underpinning, including mass concrete underpinning, beam and base underpinning, mini-piled underpinning, and resin injection underpinning. The method used will depend on the specific requirements of the structure and the site conditions.

Underpinning is typically carried out by specialized construction companies and requires careful planning and engineering to ensure the structural integrity of the building. It is important to hire experienced professionals to undertake underpinning work in order to avoid further damage to the structure.