Foundation settlements of English cathedrals

Abstract

In this thesis, the structural and geotechnical components that contribute to the settlement of English cathedrals are analyzed. The stress at the base of tower and nave piers was found and compared to the allowable bearing capacity. The expected settlement range of each cathedral's tower and nave piers was calculated by analyzing the site's soil conditions. The average settlement expected for a central tower pier not founded on bedrock is between 14 and 21 cm, which is greater than the average expected settlement of a nave pier, 7cm. An average differential settlement between the nave and tower piers expected is between 7 and 14 cm, which can contribute to cracking in the masonry or even structural failures. Less differential settlement will occur in areas with firmer soil than with deep clay.