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The Structural Engineer

THE prevention of noise in framed buildings of all kinds has for years exercised the minds of designers and constructors alike and even to-day the full effect of sound transmission through structural elements is but imperfectly realised. C.W. Glover

The Structural Engineer

THE first Interim Report of the Joint Sub-committee with the Institution of Civil Engineers appointed to consider the effect of vibration on concrete appeared in the March, 1937, issue of the Journal. In that Report were given the results of tests designed to show the effect on the strength and density of the concrete, of variations in the water/cement ratio, frequency of vibration, duration of vibration, and maximum acceleration, one variable being studied at a time.