The Design and Construction of a Precast Concrete Multi-Storey Factory Extension. Discussion on the

The Chairman: ' We are indebted to Mr. Williams and Mr. Rutter for their practical and informative paper. The authors have taken account of forces which only ten or 20 years ago would have been discussed only in a university laboratory. They have had concern with deflection which until quite recently was quite unthinkable. I think this is a sign of things to come, both in concrete and in steel. We are going to have to know things very much more, we are going to have to know very much more about the behaviour under working conditions as soon as we go over to what is known as the limit state method of design. '

Mr. Brian Scruby, CEng, MIStructE, MICE, will take office as President of the Institution 1967-68 on 5 October and will give his Presidential Address at a meeting at 6 o’clock that evening at 11 Upper Belgrave Street, London SW1. George Frederick Brian Scruby was born in 1912 and for the past 50 years has lived in the Sutton and Cheam area of Surrey. Essentially a practical engineer, Mr. Scruby attended Wimbledon Junior Technical College until 1927 and, by parttime studies, first at Wimbledon Technical College and later at Borough Polytechnic, prepared for the Institution’s examinations. He became a Graduate in 1935 and an Associate Member in 1937. He transferred to full Member in 1944.

The self-weight of a cantilever tower that is deflected from its stable vertical position, will, in contributing to the loading on the structure, magnify the deflections and bending moments throughout the structure. F.A. Gaydon and W.J. Lanarch