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The changes which will be brought about by the 1974 Act and a possible alternative to existing systems of control operating in the United Kingdom are described in this paper. All town planning and financial controls affecting building are outside the scope of this paper. Technical requirements in Building Regulations or By-laws, will not be dealt with but the paper will concentrate on enforcement of Regulations affecting construction of buildings. In its territorial scope it will deal mainly with England and Wales with some reference to building control in Scotland.
A recent comment on 'Guidelines for the appraisal of structural components in HAC' issued by the Institution last October, suggests that this useful paper was unlikely to be acceptable by local authorities and others as a yardstick of adequacy. It was, of course, never intended to be and is no more than the title says; these are guidelines from the Institution to its members alone to assist them in reaching a well founded professional judgement for which they will be responsible.
The influence of the conditions of loading and lateral support on the inelastic lateral buckling of rolled steel beams is studied using a finite element approach. The numerical results obtained are subsequently used to assess the accuracy of simplified methods of allowing for these factors. Changes in the form of the applied loading are found to affect the critical moment much less in the inelastic range than in the elastic range and it is therefore suggested that the use of an effective length approach provides the most appropriate method of dealing with such factors.