Conservation compendium. Part 6: Concrete repairs to English cathedrals – what are the consequences?

As we mark the 70th anniversary of VE Day, Allan Mann reviews the key structural engineering developments of the war (and interwar) years – from airship hangars to the Mulberry harbours – and explores their impact on the profession as we know it today.

James Miller, a Conservation Accredited Engineer, introduces a new series on conservation engineering by exploring the philosophy and history of the modern conservation movement, from its roots in the works of John Ruskin to the present day.

This article covers technical and asset management aspects related to the assessment and subsequent strengthening design for post-tensioned concrete box-girder bridges.