Author: Wood, R H
First published: N/A
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Wood, R H
Mr. Derek R. R. Dick, BSc, CEng, FIStructE, FICE, will take office as President of the
and at an Ordinary Meeting at 11 Upper Institution 1974-75 on 3 October next evening will deliver his Presidential Address Belgrave Street, London at 6.0 pm that 'The Future of the Institution'.
Professor S. Mackey (F) : My main concern is to learn why, in Britain, limited records of wind and pressure measurements are being extrapolated to such a degree that if applied to Hong Kong conditions would render economic design of buildings impossible.
Mr. B. Rhodes: Mr. Longbottom has done less than justice to large diameter strand, by which I mean 28 mm (1 1/8 in) diameter strand. I know it is not used a lot, but this is really because of lack of effort on the part of the manufacturers and the system suppliers. 28 mm diameter strand has certain basic drawbacks, namely:
1. The shape of the load/extension curve
2. Relaxation losses at 6 per cent
3. Lower grip efficiencies
4. The tendency to fly open when cut
5. The 'banana' effect at the ends