UDC 620.4: 624.043.23:624.94.016.7 - - J= EmTaylor* The superstructures CEng, MlStructE - -_ -. __ R. F. Readyt G. T. Williams$ g - CEng, MIStructE, MICE - = of Dungeness 'B' - BSc, CEng, FIStructE, MICE - - Nuclear Power Station - *Senior Engineer, tSenior Assistant Engineer, $Associate, __ - - - - - Scott Wilson Kirkpatrick & Partners - Scott Wilson Kirkpatrick & Partners - F. R. Bullen & Partners - - Street. London SWIX, on Thursday 9 December 1971. - - - - - - - - - - - - Paper to be read before the Institution of Structural Engineers at 11 Upper Belgrave - - - - - J. E. Taylor was educated at King Edward VI Grammer School, Aston, Birmingham and at the College of awarded the Wallace Premium Junior contractina and consultina firms and =) 7. Technology, Birmingham and was Q in January 1951. He has worked for both joined Se& Wilson Kirkpatrick and been engaged in the design and tech- Partners in 1957. Since that time he has industrial and commercial projects nical control of a number of large elected a Member of the Institution in both in theUK and abroad. He was City and Guilds of London Institute. 1953 and is a structural examiner for the R. F. Ready was educated at Sloane Grammar School and Westminster TechnicalCollege. He wastrainedunder agreement with a contracting firm, served in the Royal Engineers and joined Scott Wilson Kirkpatrick and Partners in 1959, wherehehasbeen engaged in the designofmanylarge home andoverseasprojects.Hewas in 1957. elected a Member of theInstitution d G. T. Williams graduated from Bristol University in 1952. After work- ing in the ofice and on site with ' Bullen andPartners in 1965, becoming consulting engineers he joined F. R. has been responsible for the design of an Associate in the following year. He L a number of important structural jetties and other marine works and for projects. He became a corporate member of the Institution in 1955 and was elected a Fellow in 1966. I Synopsis The paper describes in detail the structural solutions adopted in the design of the superstructures of major steel framed buildings Constructed on an extremely exposed site. Particular reference is made to the design of a large three- dimensional structure at high level and to the resistance to wind forces provided by reinforced concrete floor slabs acting in conjunction with vertical braced steel frames and an infernal reinforced concrete tower structure. The requirements governing the design of the superstructure frameworks are defined and brief particulars are given of a wind funnel test associated with the high level three- dimensional structure. Introduction The design described in this paper pertains to the super- structures of buildings only and results from the advice given by consulting structural engineers to the Consor- tium appointed to design and construct Dungeness 'B' Nuclear Power Stati0n.l The superstructures are those of the station main buildings which comprise the Reactor Building, the Services Building and the Turbine Hall, (see Fig 1). Both the Reactor and Services Buildings are multi-storey structures. The Turbine Hall is a single-storey structure. Each building is framed in structural steel and sup- porteduponaraftfoundationatbasement level. The rafts,basement retaining walls and all floor slabs are constructed of in situ reinforced concrete and the external cladding generally comprises insulated protected metal roofdeckingandsidesheetingwithpatentglazing in certain areas. Movement joints are provided between and in certain positions within each building. The main buildings are situated as shown in Fig 2. The site has an average ground level of +5.5 m (18ft) O.D. and forms part of a large triangular flat promontory. The soil strata underlying the site generally comprise flint gravel to a level of -7.9 m (26ft) O.D., fine to Fig l The main buildings during construction showing from left to right the Turbine Hall, Services Building and Reactor Building THE STRUCTURAL ENGINEER 0 NOVEMBER 1971 0 No l1 0 VOLUME 49 501
