The failure of foundations leads to distortion of building superstructures and a loss of structural integrity. If allowed to continue unchecked, this process will lead ultimately to non-serviceability and demolition. The chief and most successful remedial measure is to underpin the structure and restore full or partial structural integrity.
Various underpinning methods exist, and choosing a particular method or selection of methods is the job of the engineer. Consistent with the underpinning procedure is the need to retain the affected structure plus the surrounding ground and/or buildings.
Table of Contents
Traditional methods of support. conventional piling. pali radice. the Pynford system. the Bullivant system. ground freezing. underpinning by chemical grouting. lateral shores and strutting. ground anchorages. soil nails.
S. Thorburn and G. S. Littlejohn