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The Structural Engineer, Volume 56, Issue 9, 1978
The problems of interaction between manmade structures and the ground which nature provides to support them are always with us; we were glad that the Institution's Symposium in May to launch its excellent state-of-the-art report was so well attended. Discussion was lively and interesting; Sam Thorburn and his committee are to be commended for producing a stimulating and useful study. Verulam
By separating a vibration problem into two distinct parts, one concerned only with the spring forces in the structure and the other only with the inertial forces imposed by the mass carried, easy calculations can be used to solve fairly complex structures. A. Bolton
Clients, consultants, observers and users often express concern when perceptible motions of buildings, bridges, offshore and other fixed structures occur. In this paper human reactions to such vibration are discussed and magnitudes of motion caused by a variety of environmental and other forces which should prove acceptable to the majority of people who use the structures, and many purposes are suggested. A.W. Irwin