The Control of Research Programmes in Structural Engineering in Britain

Part 1 of the paper gives a versatile numerical procedure for determining the elastic buckling loads of slender beams loaded in the vertical plane. This procedure, which readily takes into account different loading and support conditions and simultaneously handles lateral bending and torsion, is then used to study the self-weight buckling of long beams during lifting. R.A. Swann and W.G. Godden

The paper gives a general account of the planning, design and construction of television masts with particular reference to the cylindrical masts which have been built for the Independent Television Authority at Winter Hill, Emley Moor and Belmont. T.F. Mears and W.R. Charman

A general method for the analysis of Vierendeel bents with nonparallel members is presented. In the ' initial sway stage ' the frame undergoes translation and rotation of the joints in such a manner that the initial sway moments are in equilibrium with the applied loads. In the ' distribution stage ' the joints are balanced while the frame is again allowed to sway, thus preserving the equilibrium established in the initial-sway stage. The distribution yields the final moments directly. Numerical examples are given to illustrate the procedure. F.P. Wiesinger, J.F. Carney and S.L. Lee