... of the Chairman, thethanks of the Division were accorded to * the Authors. Structural PaperNo. 18. Reduction of Ground Vibrations into Structures By JAMEHSENRYARCHBOLCDROCKETBT.,Sc. (&g and REGINALD EGBERTROLTHAMMOND, A.MM.1.C.E. TABLE O F CONTENTS. .Introduction . . . . . . . .Oscillation theory Soil dynamics...

.... R. S. Colquhoun observed that on p. 7 the Authors had introduced the term Soil Dynamics, whilst Figure 9 illustrated a series of wave-fronts travellingthrough the soil beneath a foundation whichwas subjected to a single vertical downward impulse. The form of the wave-fronts approximated t,o...