Author: Noble, Ronald
First published: N/A
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The PRESIDENT, proposing the thanks of the meeting to Mr. Bowie, said it would be appreciated that in the presentation of his subject he had given information additional to that contained in the paper. The purpose of the Institutions’ meetings was to pool knowledge, and Mr. Bowie had helped in that regard in a very able manner. The hearty thanks of the Institution were due to him, not only for the information he had given, but also for the very able and interesting manner in which he had presented it.
Several pure mathematical solutions have been obtained for beams resting on elastic foundations, see, for example, Terzaghi's "Theoretical Soil Mechanics," but these are restricted to certain standard types of loading and to constant flexural rigidity of the beam.
The ordinary theory of flexure in beams, based on the "straight line" theory of strain and stress distribution, is a particular case of the general theory, when the depth
to span ratio is small. Design problems frequently arise, however, when this ratio is comparable to or greater than unity. To apply the "straight line" theory of flexure to such cases will lead to erroneous and often unsafe results. This paper sets out the main features of the design methods for beams in which the depth to span ratio is not small-henceforth to be designated "Girder Walls"-based in part on work already published 1 2 3, and in part on research work done by the writer.