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The Structural Engineer

Dr. R. A. Swann (M) (Hydro-Air International): The author is to be congratulated on his most elegant application of classical theory of elastic stability to the analysis and design of timber roof trusses. Some interesting points arise from this.

The Structural Engineer

Professor J. Munro (F) (Imperial College): In his interesting and informative paper, Mr Reith has outlined the main aspects of the reconstruction of this important dome. He has also mentioned that he consulted me regarding the stress-analysis of the dome and the arches, and I should like to make a few additional comments regarding those aspects of the project. The first stage consisted of

The Structural Engineer

Mr E. N. Sealy (Seltrust Engineering Ltd): I would like to say that my part in the project was not on the refinery, but more on the service side. I was pleased to see that Mr Dunham put up his productivity chart and not mine!

The Structural Engineer

While the treatment of deflection in CP110 has been generally welcomed as an improvement on the rather rough-and-ready spaddepth rules in CP114, it is very cumbersome to apply in practice. The designer cannot check the spaddepth ratio until section design is almost complete and, if a problem arises, he/she has little guide as to what scope there is for solving it by redesigning with a reduced steel stress.

The Structural Engineer

Practical design and construction procedures are outlined for a three-span continuous composite bridge deck, incorporating the use of curved plate girders and high strength concrete using cement/PFA replacement. T. Walter Reed

The Structural Engineer

Background Defects arising in a building or other type of structure to which the public may have access, may put the public at risk in terms of injury or even death. These defects may be either inside the building or related to the exterior. In many cases the actual structure of the building may not be in question, but doubts may exist on the behaviour of non-loadbearing walls, suspended ceilings, claddings both internal and external, fixings and fasteners that may be carrying loads, and similar items incorporated in the building or structure. C.W. Pearson

The Structural Engineer

The nuclear debate and professional responsibility The current political activity and public concern with problems of nuclear policy has brought the following questions on professional involvement from Mr. R. Cheek: Should we, as constructors of the modern environment, be warning of its likely devastation in an atomic exchange? Verulam