The Reconstruction of Short Span Bridges in London

A brief description is given of the finite-element method used to obtain the distribution of clamping pressure at the interfaces of lap joints. Relations are presented which enable the pressure to be calculated for ranges of the geometrical parameters likely to be found in structural steelwork joints, and the significance of the results obtained is discussed in relation to the strength of steels and the grades of bolts in common use. M.S.G. Cullimore and J.B. Eckhart

Several bridges which have been designed by the author's firm are described. The reasons for the choice of designs are given and the methods used in analysis and some detail problems are described briefly. Emphasis is placed on choosing a simple and natural design to suit the particular bridge problem and developing this in a sympathetic way with regard to the final appearance; careful attention being given to details. G. Duncan

The fourth in the series of surveys of chartered engineers undertaken by the CEI was conducted in the summer of 1973 and the Survey was published in December last. Copies of the full survey are obtainable from the CEI, 2 Little Smith Street, London SW1P 3DL price f4.50.