The subject hit the headlines in the 1970s due to a spate of collapses during motorway construction works, leading to the Bragg Report (HSE, 1976) and the first edition of BS5975 (BSI, 1982). “ One of my foremen was at Birling Road on the day it collapsed” .
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Andrew first put the concept of material failure into perspective, and it does not necessarily mean a complete collapse or loss of containment (although this may well be the case), but can also apply to a loss of operability, functionality or reliability such that continued use is not possible, or is unsafe.
We have to beware the a collapse in 2009 when Pier 4 was wrong data input. An external brick wall collapsed during strong through grout. The collapses of reinforcement cages before concreting provide examples of this.
Stewart presented on the collapse itself and its immediate impacts, where the same defects that contributed to the collapse of the wall at Oxgangs were found in another 17 schools built as part of the same contract.
After his retirement he served as an expert investigator of a number of tragic accidents, including the Bilsthorpe Colliery roof fall in 1994, the Ramsgate walkway collapse, the Ladbroke Grove Rail Disaster, and most notably, the King’s Cross Underground fire.
About 15 years before a major flood had arrived with no warning, bringing local Hazards Forum Newsletter No 88 – Autumn 2015WV 15 businesses, such as a small garage, very leadership, and areas where they had close to collapse.