Author: Gifford, E W H;Taylor, P
First published: N/A
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Gifford, E W H;Taylor, P
Mr. W. J. Larnach (Associate-Member) writes:-
‘This paper is of particular interest since it describes a method for the calculation of influence lines which in essence is identical with that which I have presented in an earlier paper1 and in my recent book. The only point of difference is the treatment of the effect of sidesway; the author uses an application of the reciprocal theorem (first proposed, it seems, in his reference 1) whilst I adopted the technique of shear balance.'
Introducing the paper. Mr. Dent said he was very conscious of the fact that it contained very little on direct structural design. There were two reasons for this: firstly, the structural design work associated with oil terminals was conventional and straightforward with one or two exceptions which were dealt with in detail in the paper; secondly, the engineer was now finding it necessary to spend much of his time considering the broader aspects of engineering problems and the planning and economics of a structure were as important as its stability. Therefore he now intended to spend some time enlarging on general problems of planning and economics.
The paper describes the structural design and construction of the National Stadium built in Jamaica primarily for the Central American and Caribbean Garncs held in 1962. The most interesting feature is the grandstand and the design of the arch frames and cantilever roof is described in detail. The considerations of differential deflexions which affected the design and methods of construction are discussed and calculations for the design of the arch frames as a two-hinged arch are given in the Appendix.