Author: Fraser, J S
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Fraser, J S
This paper describes the use of load testing to more accurately assess the load capacity of three bridges in Surrey. Two reinforced concrete bridges, one a subway roofspan and one an arch, had been assessed previously with the results of 3t and no live load, respectively. In common with many similar structures they showed few signs of distress in the main structural components, although they did require other maintenance. A third bridge, consisting of three identical cast iron spans, was already subject to a 7.5t weight restriction and had been assessed at 3t. In 1995, Surrey County Council appointed Peter Lindsell & Associates to carry out supplementary load tests on the three bridges. This paper describes the load testing methodology used. In all cases the measured strains under controlled live load, consisting of preweighed aggregate lorries, were considerably less than those predicted by the use of conventional analyses. The results of the load tests were used to modify the original assessment models, and considerably enhanced assessment live load capacities were obtained. P. Lindsell and G. Cole
The University of Surrey is a medium-sized campus-based university, with over 8000 students, situated adjacent to, and within easy walking distance of, the town of Guildford, which is approximately half an hour from London by train. The university is now some 30 years old, having grown from Battersea College, and, while it retains some of its former characteristics (e.g. in relation to the practical relevance of its courses) it has come a long way in those years. Indeed, it is amongst the top cohort of institutions in terms of many of the traditional measures, such as research income and employment record. Surrey is traditionally within the top few universities for graduate employment and topped the employment league for all universities last year. Professor J.E. Harding, G.A.R. Parke, D.R. Griffiths and M.J. Ryall
The standard methods of applying fire protection to steel framed structures, in the form of board, spray or intumescent coating, are well known. However, owing to material and fixing costs the need for passive fire protection is classed as a distinct disadvantage of using steel as a material for structural frames. C.G. Bailey and G.M. Newman