Author: Hay, J W
First published: N/A
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Hay, J W
Sir,-In the March number of the Institution's journal a letter appears under the signature of Mr. G. Robertson, asking for an amplification of the explanation given in reply to his query on the danger of the action of creep in portal frame bridges during the discussion of my paper on the Creep of Concrete under Load.
The General Situation. The sructural steelwork trades and professions have probably felt the effect of the recent general business depression more than any of the other leading industries in this country.
Harold V. Crabtree
In all the structures with which it is proposed to deal it is assumed that the displacements caused by the application of loads are so small that in calculating the forces in the various parts of the structure its initial form may be assumed. In most structures this may be done without appreciable error and, as a consequence, we may express any static function H, such as a reaction R, a force S, a bending moment M, a shearing force Q, deflexion...