When at a collapse, what is underpinning considered?

Underpinning is considered a permanent method used to stabilize and provide support to a structure that is at risk of collapsing, especially in situations where the existing foundation is inadequate due to soil erosion, structural changes, or damage. In the context of collapse scenarios, underpinning involves enhancing the foundation's bearing capacity, ensuring that it can withstand additional loads and environmental conditions.

The technique usually involves the construction of new footings below the existing foundation or the insertion of support materials to distribute loads more evenly. This is crucial in a collapse situation to prevent further structural failure and safeguard the integrity of the building.

Understanding underpinning as a permanent solution is vital in emergency response and structural stabilization, distinguishing it from temporary measures that may only provide short-term support. A permanent underpinning approach is especially important for the long-term safety of the structure and the safety of personnel on-site.