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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
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. S.C.C. Bate
You have done me the great honour of electing me as your President-I thank the members of the Institution and undertake to do my best to justify your confidence. Judging from their remarks on taking office, my own sense of humility and feeling of some inadequacy has been common in my predecessors, and it is this realisation, together with my personal experience of the help and friendship that I have received within the Institution, that emboldens me to step into the Presidency with a pleasurable anticipation of its challenges and opportunities. Professor M.R. Horne