Our newly published paper describes a ground movement prediction model for a piled basement at a highly sensitive site in London adjacent to a Grade 1 Listed church designed by Sir Christopher Wren dating to 1676 when constructed after the Great Fire of London.

The paper presents a case study for cased small diameter Continuous Flight Auger (CFA) piles for a sub-basement extension below a previously existent basement and provides an argument for refining the datasets presented in CIRIA C760.

Comprehensive monitoring was installed and examined continually throughout the construction period during 2015. The results are compared against the predicted ground movements, and it is determined that the installation movement values in CIRIA C760 can be greatly refined for well-constructed contiguous piled wall installations, with beneficial results for all parties. This is consistent with the new observational method framework proposed by the CIRIA report.

Garlick Hill case study can be viewed here

Read the paper in July’s Edition of Ground Engineering Magazine.