Discussion on Towards Better Structures for Tomorrow by Mr. D.K. Doran, Mr. S.B. Tietz, Mr. D,W, Qui

Mr M. Gaynor (F): Mr Jackson’s paper is an excellent contribution to an understanding of BS5400, and this clarification comes none too soon, but it is a pity that he did not address the topic of the validity of the limit states and their relative importance. The way the limit states are used requires presupposing a number of facts whose validity I find difficulty in accepting and also ignores matters which crop up from time to time, such as durability and acceptable degree of damage in the ‘ultimate’ condition, which are of fundamental importance to the practice of structural engineering.

Professor R. P. Johnson (F) (University of Warwick): It is instructive to compare the results of these 24 tests with the conclusions from 16 tests on plated beams reported in 1981, which were less encouraging than those now reported. There are no inconsistencies, but some questions remain. The relevant conclusions were as follows.

In his Presidential Address Keith White reiterated the concerns expressed earlier in the year of the effects of fee competition on the profession. He goes on to say that many smaller practices may be ineed of help on this issue, among others. C. Mitchell