What is Underpinning?
In [[construction]], '''underpinning''' is the process of strengthening and stabilizing the [[foundation (architecture)|foundation]] of an existing [[building]] or other [[structure]]. Underpinning may be needed for a many of reasons: *The original foundation is not strong or stable enough. *The usage of the building has changed. *The type of [[soil]] supporting the foundation may have changed (possibly through [[subsidence]]) or were misjudged during planning. *The construction of nearby structures causes the [[Earthworks (engineering)|excavation]] of soil supporting existing foundations. *It is more economical, due to land price or otherwise, to work on the current structure's foundation than to build a new one. [[Category:Construction]] {{stub}}