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Two major bridges on the A46 Newark Relief Road (Nether Lock Viaduct and Windmill Bridge) are presently being completed using steel construction for the bridge decks. This follows preparation of dual designs in both steel and concrete and comparison of tender prices. Factors leading to the selection of the bridges for dual design are considered. The design requirements and features of the bridges are outlined. E. Jeffers and S.J. Wood
Peter Dunican, CBE, FEng, served Ove Arup & Partners from 1943-84 and was Chairman of the Ove Arup Partnership for the last 7 years of that period prior to his retirement. He was elected to the Institution’s Council in 1964 and served as one of our most distinguished Presidents for the session 1977-78. In 1983, he was made a member of Council of the Fellowship of Engineering. His sudden and untimely death on 19 December last year came as a terrible shock to his many friends and colleagues. Peter Campbell
Potential for catastrophe in building alterations - a question of responsibility Peter Mawer of Bude in Corn wall has written about a most interesting case where sequential building alterations could have led to the development of a potentially disastrous situation: A most extraordinary circumstance has come to light during a survey of a large shop. The implications are so devastating, I feel compelled to pass on the information. It is simply this: -If a terrace of shops is developed over a number of years from a row of domestic dwellings and takes the form of extended walls and raised roofs and if the landlord sees fit to use party walls to support the floors and roof and if he removes all the cross-walls except the rear wall-the buildings become like houses on stilts with little or no lateral stability. (See Fig 1.) Verulam