Author: Desai, S B
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Desai, S B
I would like a better explanation of the jacking of the cable saddles on top of the bridge towers. The cable saddles are on sliding bearings and presumably were preset away from their final position deliberately, so that, when the cables were installed, the saddle would move into its direct location. Was the saddle jacking used to control this process or to actually induce stresses into new suspension cables?
The environmental benefits of using waste materials in construction was identified as long ago as 1974. This paper describes the results of a project undertaken for the Department of the Environment, Transport & the Regions in which methods of utilising waste materials as alternative aggregates in structural concrete were explored. Three types of waste material were identified as potential aggregates: china clay waste, slate waste, and pulverised-fuel ash. IThe project investigated methods of utilising these materials as aggregate by low-cost processing and/or novel mix design. The results of the project were encouraging, since good quality concrete mixes were produced fron all three waste materials. A.K. Butler, D.S. Leek and R.A. Johnson
Reinforcement Detailing to BS 8666 This has raised a barrage of further comment. Rob Walker, a detailer with long experience, writes from Milton Keynes: I am but a poor draughtsman but, after reading your recent column with letters from your members regarding this new BS, I felt I had to make comment. Whilst in principle I do agree with your writers, Mr Holloway’s comments regarding shape code 51 show that he does not have a very high opinion of the intelligence of detailers and perhaps he didn’t realise that the drawing in the code is only diagrammatic.