Author: Mainstone, R J
First published: N/A
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Mainstone, R J
It is proposed in EC6 "Design of masonry structures" that the characteristic compressive strength of masonry is given by the equation in the title of this paper. This equation is based mainly on the results of physical experiments conducted in many
countries and is known to give satisfactory results for practical purposes. The aim of the study reported here is to critically examine the above equation from the point of view of theoretical engineering mechanics and to investigate as to which mechanical parameters describing both masonry units and mortar influence the compressive strength of structural masonry.
G.N. Pande, B. Kralj and J. Middleton
Part 3: introduction
The 1993 examination has proved to be the most successful in terms of the overall passrate (45.1 % ) since 1981. The number of candidates was 942, a decrease of 123 compared to last year and, the first time in 4 years, fewer than 1000 sat the examination. The number of UK candidates was 574 (a decrease of 100 compared to 1992), of whom 269 passed, giving a pass-rate of 46.9 %, an increase of 3.4 %. The most encouraging statistic this year was the 12.8 % increase in the overseas pass-rate. The
number of overseas candidates was 373, of whom 157 passed, producing a pass-rate of 42.1 %. Furthermore, 121 candidates passed the examination out of a total of 271 at the Hong Kong centre, a pass-rate of 44.6 %. The increase in this figure may be due in part to a liaison between the North Thames Branch and the Hong Kong Representatives with respect to an examination preparation course held earlier in the year.
Castle Mall, an urban shopping centre of 110 000 m2 retail, services and carpark space, opened in September. It has been constructed on a site immediately south of the Norman Motte and Bailey Castle - a site that, 4 years ago, was a surface carpark and criss-crossed by roads. Now on the surface it is a city centre park with a 100 m glazed pavilion, boundary roads and some new shopping buildings on a scale with the surrounding two- and three-storey structures. Below the surface is a four-level retail centre extending across the entire 2.5 ha site. It has been constructed up to 20 m into the ground on a site of significant archaeological interest.
A.D.W. Broomhead and W.J. Grose