Author: Fewtrell, Andy
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Design of flat slabs is usually based on separate considerutions of flexure and shear, with empirical rules similar to those used in design of beams and continuous slabs. Additionally, shear capacity of a flat slab has to account for its distinctive mode of failure known as 'punching failure' or breaking away of a portion surrounding the column from the rest of the slab. Provision against such failure is often the critical design requirement for flat slabs with or without openings adjacent to the columns. While links are normally provided to enhance the punching shear capacity, the current Codes of Practice stipulate limits on the loadcarrying capacity of flat slabs. Such limits govern the thickness of the slab and, therefore, have a direct influence on economy of construction. This paper examines the limits on loadcarrying capacity of flat slabs supported on internal and rectangular columns, which are given in BS 8110 and Eurocode EC 2, with the help of tests on slab specimens with and without openings. S.B. Desai
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?
Britannia is a large North Sea gasfield. Its successful development was dependent on the project being executed within challenging budget controls. To promote this the project was carried out as an alliance between clients and contractors where rewards were dependent on total project cost and performance. The aim was to align client and contractor skills towards the common goals of creating safe and quality facilities, below cost targets, sharing the profits of success. C. Blow, M.A/ O'Donnell, R.M. Hodges and I. Wright