Ground movements from a deep excavation in sands and interbedded clay : O'Rourke, T D Proc Symposium on Failures in Earthworks, London, 6–7 March 1985 P371–381. Publ London: Thomas Telford, 1985

Abstract

The paper presents and discusses the ground movements caused by an 18 m deep braced excavation in sands and interbedded stiff clay. The excavation was part of the construction of a metro station in Washington, DC. The maximum horizontal and vertical ground movements were relatively small, being of the order of 18 mm. Nevertheless, significant damage was observed in adjacent buildings, one of which was a four-storey masonry structure which was underpinned before excavation was started. The characteristics of the ground movements and their effects on adjacent structures are evaluated. For the covering abstract of the symposium see IRRD 286603. (Author/TRRL)