There has been growing interest in the service life of structures due to perceived lack of performance in structures built in the last 40 years or so. With that in mind, the British Group of IABSE organized a colloquium in July 1990 at Pembroke College, Cambridge, UK, which, in effect, was a workshop on the feasibility and practical application of design life principles to structures.
All sectors of the construction industry were represented, including private and public sector owners, local authorities, architects, engineers, contractors, material specialists and universities. The scope related mainly to bridges and buildings, and the subjects covered included design concepts, detailing, loads, performance requirements, predictive modelling, material specifications, workmanship and maintenance.
Other papers covered seismic design and long life structures. Additionally, there were contributions on how related industries (e.g. offshore, marine, nuclear and aircraft industries) coped with design life. Five of the 33 invited delegates were from Europe and North America.
In all, 29 invited papers were presented in four sessions, with reporters preparing extensive summaries of the wide-ranging discussions that took place in each. This book contains both the papers and the reports, together with a final summing-up, which gives the main conclusions from the colloquium, as well as indicating the way ahead in developing a structured approach to give better in service performance.
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