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The paper sets out the background to the introduction of high alumina cement to the manufacture of precast, prestressed concrete components in the United Kingdom and outlines the successive recommendations made for its use. It summarises experience gained from the structural appraisals following the collapse of the roof over the school swimming pool at Stepney and relates the site findings to the results of laboratory research. It suggests that there is no case for the reintroduction of high alumina cement for precast, prestressed concrete but that its use in its original function for concrete to resist seawater and ground waters might be reexamined.
Mr R. J. Pugh seems to reach the same conclusions as Mr R. Farnborough (October 1980) on this subject. He writes: With reference to the letter (June 1980) of Messrs Coverman and Clarke on the subject of earthquake loadings I think that many engineers will agree with Verulam's comment at the end of the letter - namely, that other countries have their own requirements.
Friarton Bridge over the River Tay at Perth is a multispan bridge comprising two independent welded steel box girders, each with a composite lightweight concrete deck slab. The bridge is notable for being one of the first in the United Kingdom to use structural lightweight concrete in its construction, which made composite construction
economic for the river span; also for being the first major structure to be designed to the ‘Interim Design and Workmanship Rules’ (successor to the ‘Merrison’ Rules).
O.A. Kerensky, J. Robinson and B.L. Smith