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THE PRESIDENT (Professor J. Husband, F.R.C.Sc.I., M.Inst.C.E.) commented on the
great interest of the subject of the paper, and said that probably the majority of the members had had to deal with underpinning in some form or another. He had had a good many underpinning jobs to look after, and Mr. Muirhead had put forward in the paper some exceptionally interesting examples of that class of engineering.
I propose in this address to invite your consideration of some of the principles upon which our present day structural design is based and to remember some of the scientists of bygone days to whom we are indebted for the discovery of these principles.
Mr I.P. Gillson (M) (Central Electricity Generating Board): I draw the attention of specifying engineers to the need to
-study carefully the September 1983 draft ‘Guidance notes’ when dealing with particularly vulnerable structures
-consider the relevance of tests on mortar prisms and cubes to the risk of ASR damage
-consider the scale effects of concrete samples on the risk of ASR damage
-examine evidence from concrete that has been damaged by ASR