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The paper describes the development and design of the steel rising sector gates of the Thames Barrier. Particular attention is also paid to the structural model testing programme which was undertaken as part of the design process.
R.G.R. Tappin, Professor P.J. Dowling and P.J. Clark
Competitive steelwork design
The letter from Mr C. P. Pountney published last September made several criticsms on the grounds of lack of economy of what he described as the ‘traditional’ British design of bolted joints in steelwork as compared with designs prepared by international competitors. A number of our readers did not agree with him entirely, and their comments appeared in our December issue. Mr Pountney now writes: It is gratifying that much comment has been caused by my letter regarding joints between primary and secondary beams.
This paper describes the reconstruction of a stone tower in the medieval walled defences around the old City of York. The towers and walls making up the defences are a scheduled ancient monument. Any reconstruction or restoration work to them consequently requires very specialised engineering techniques that will not only satisfy the structural needs of the monument but will leave it in an authentic and original form.
J.R. Nursey and R.W.A. Dallas