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The parameters affecting the ultimate shear capacity of two-bay prototype beams have been examined using dimensional analysis; in particular, the importance of web slenderness and flange stiffness has been demonstrated. Design charts, which take into account the postbuckling behaviour of the web, have been proposed for beams having a clear web depth up to 600 mm. Values taken from the charts indicate that the current design procedure for beams with slender webs grossly underestimates their shear capacity.
B.O. Hilson and P.D. Rodd
MR. EWART S. AKDREU’S, B.Sc., M.1nst.C.E.. (Vice-
President), proposing a very hearty vote of thanks to
Mr. Helsby for his interesting paper, said he had read a number of papers on the subject of welding, but in this paper Mr. Helsby struck entirely new ground, and had given much interesting and helpful information. Presumably he had not considered it within the scope of the paper to state the relative costs of a riveted and a welded structure, but no doubt many members of the Institution would be very interested to have some information on that matter.