The paper describes the development of computer programs for an accurate analysis of grillages and plain frames consisting of members having varying section properties. The accuracy of the grillage program has been tested on a perspex model bridge deck and the results indicated good accuracy of the method for the analysis of plated and fully tortionally stiff structures. F. Sawko and B.K. Willcock
Professor R. H. Evans (Professor of Civil Engineering, Leeds University) writes: ‘ As a member of the Drafting Committees of both CP 115 and CP 116 I have read with interest the series of papers 1,2,3,4 dealing with Codes of Practice and their revision, which have appeared over the past two and a half years. The papers, together with the subsequent discussions, provide a most valuable guide for those structural engineers who will eventually have to make comments and decisions on the proposed Code for Structural Concrete and which introduces a change in philosophy to limit state design. ‘
COURSES IN LUBRICATION During the academic year 1967-1968 ten one-week courses in lubrication will be held at Imperial College. These courses are concerned with the practicalities of lubrication and are designed for a wide range of personnel, including plant and maintenance engineers, designer-draughtsmen and technical representatives as well as more senior staff. The content is non-mathematical in nature. The courses will be delivered by nine lecturers chosen from people who have spent all their life in industry and know their subjects from the practical aspects through and through.
This report (available from HMSO price 8s 6d) is a detailed survey of professional engineers, by background, by present activities, and by income and is the most comprehensive yet undertaken of any profession in Britain. Questionnaires were sent to 25,000 professional engineers representing a cross-section of the fourteen engineering institutions of the CEI and there was a response rate of 86 per cent. Included in this total was about 15 per cent of the Institution’s Corporate and Graduate membership in the United Kingdom. The survey was undertaken by the Ministry of Technology in association with the CEI, and figures have been made available which permit a comparison of the Institution’s members with that of all engineers. The main results are summarized in Tables 1-6 on this page and the page opposite.
The paper describes a series of full-scale tests on composite cantilever box beams having reinforced concrete slabs as flanges and reinforced brick walls as webs. J.M. Plowman, R.J.M. Sutherland and M.L. Couzens