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It is difficult to predict the distribution of residual stresses present in an asymmetrical welded fabrication such as a stiffened panel. The problem is further complicated when techniques are employed to minimise the out-of-straightness of the finished article. Since residual compressive stresses are often a source of weakness in a compression member, it is important to allow for this effect when drafting design Codes. The tests reported in the paper form a useful contribution towards this end. However the work could have been considerably more interesting if some additional measurements had been made.
G.H. Little and C.D. Bradfield
The decision in 'Anns'case continues to draw comment and stimulate controversy. We believe this to be good in itself, good that it brings out the several points of view on its implications and possible consequences and good in that it demonstrates very clearly that structural engineers are not so much concerned about themselves but about people and society at large.
The sixth in the series of Surveys undertaken by the CEI was conducted in the summer of 1977. The results were published in December last and copies of the full Survey can be obtained from CEI, 2 Little Smith Street, London SWlP 3DL, price £5. Corporate members and Graduates of the Institution were invited to complete and return survey questionnaires distributed with The Structural Engineer in July 1977. Some 31 200 together with 2700 questionnaires returned by Technician Engineers were processed-imbalances in response rates being adjusted to ensure that the data for each Institution was proportional to its size and membership.