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
Mr M. James (Health & Safety Executive): In his paper Dr. Dickie likened the structure of demountable grandstands to that of both space frames and storage racking. In fact this is not so, as these structures tend to have a form of plan bracing at various levels, while in most grandstands the only plan bracing available is at seating level. This means that, unless the stands are quite small, the taller rear frames will receive no support from adjacent ones for a large proportion of their height. Wear or poorly-designed seat fixings would make this problem even more acute.
Interpretations 1. In these Bye-Laws, unless the subject or context is inconsistent therewith:
Before the role of the technician engineer and engineering technician within the design office can be assessed, it is important to understand the educational standards and training requirements, along with the official definition of the respective technician grades, as there would appear to be too few within the profession who could answer the question ‘what or who is a technician?’ with any degree of knowledge or understanding. G.E. Harris
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
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. Verulam