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# Issue 9

#### Contents page

The Structural Engineer

The analysis of a structure carrying prescribed loading and subjected to given support conditions consists in finding a set of forces or displacements satisfying the basic requirements of equilibrium and continuity. In simple structures it is generally possible to satisfy these conditions simultaneously whereas in more difficult cases the principle of superposition may be used after satisfying the conditions separately. W.M. Jenkins

The Structural Engineer

THE PRESIDENT introduced Mr. Lewis who then presented his paper.

The Structural Engineer

Mr. 0. BONDY (Member), described the paper as impressive, and invited the authors to enlarge on one or two technical points.

The Structural Engineer

Composite construction, using rolled steel beams and concrete floor slabs, has been used for construction of highway bridge decks and building floors for a considerable number of years. So far as the Authors are aware, no comprehensive experimental investigation has been undertaken to determine the effective width of floor slab which may be assumed to act as the compression flange in such beams. The following paper describes laboratory tests carried out on four small scale composite beam and slab floors, from which the effective flange width of the composite tee-beams has been determined in each case. Sean Mackey and Franklin Kai Cheong Wong

The Structural Engineer

Mr. K. H. BEST (Member), said Mr. Davies had summarised the factors affecting the design of winding towers and had pointed out that these structures presented unusual and interesting problems, for which there were no standard solutions; and there was very little published information.