The act of one who underpins; the act of supporting by stones, masonry, or the like.

That by which a building is underpinned; the material and construction used for support, introduced beneath a wall already constructed.

The foundation, esp. of a frame house.

A process of providing an additional stronger foundation below an existing wall or foundation.

A footing introduced beneath an existing footing for the purpose of transferring the foundation load to a lower depth, and more suitable material.

Supports placed under an existing wall to provide added strength.

A process of correcting the support integrity of a footing where it has failed due to soil reactivity. Underpinning is carried out in sections, and involves excavation below the footing to where to soil has a greater load bearing value flowed by the injection of high Mpa (strength) concrete under the existing footings to act as piers onto a safe foundation.

A foundation replacement or reinforcement for temporary braced supports.

The installation of strong foundations underneath primary foundations when the latter have failed or have been found to be inadequate to support the structure above.

Using beams on an interim basis while a structure is being built. . Reinforcing a building with supports. . A property.

Method strengthening weak foundations whereby a new, stronger foundation is placed beneath the original.

Reinforcement of a building with supports or the use of beams temporarily while the structure is being built.

in the context of slab-on-ground foundation repair, underpinning refers to the use of piers and pilings to provide additional support to the concrete slab; underpinning is not only used for residential foundations but other foundations as well – for example, the White House foundation has been extensively underpinned

The process of placing new foundations beneath an existing structure.

In construction, underpinning is the process of strengthening and stabilizing the foundation of an existing building or other structure.