Author: Harley-Haddow, T
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This paper presents a case history of onsite load testing of structures. A hollow plank floor assembly contained within a 1960s low-rise housing unit was tested, and details are given of the preparation of the test area, the choice of instrumentation, and the test loading adopted. R.M. Moss and R.S. Matthews
Code limits on deflections On 17 November, Dr J. B. Bellamy questioned the basis for the recommended limits on deflections as set out in Codes, wondering whether perhaps the actual levels might not appear somewhat arbitrary. We have a response from Roger Mead of Brentwood in Essex: Although I support Dr Bellamy’s questioning of the rationale of deflection limits, I would raise issue with his interpretation of the limits in clause 14.7 of BS 5268. Verulam
The damage to concrete structures from expansive and disruptive alkali-silica reaction (ASR), which first became apparent in the UK in the late 1970s, necessitated the development of new inspection, testing and appraisal procedures. These were brought together in the 1988 IStructE report Structural effects of alkali-silica reaction, interim technical guidance on appraisal of existing structures. This has been substantially revised and updated in the 1992 Technical guidance to incorporate recent research and the practical experience in the use of the 1988 report. J.G.M. Wood and R.A. Johnson