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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
On 20 July last, under ref. BRA/1068/2, the DOE addressed the letter given below to local authorities, new town development corporations, etc. The letter contains an assessment of the BRE Report on the failure of roof beams at Sir John Cass's Foundation and Red Coat Church of England Secondary School, Stepney, and sets out a programme of action for inspection and assessment. Attached to the letter was an annex 'Suggestions for testing high alumina cement concrete' which is published on page 326.
In recent months Sir Kirby Laing, Sir St. John Elstub and Mr. A. G. Milne, as Presidents respectively of the Institutions of Civil, Mechanical and Electrical Engineers have been considering the future organization of the profession. At the beginning of July Sir Leonard Atkinson, as Chairman of the CEI, invited the presidents of all 15 CEI constituent institutions to consider an analysis of what was seen by the three Presidents as being the current problem. At that meeting it was arranged that the respective Presidents would consult informally with their Council colleagues and return to the matter at the end of September.