... 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...

... so, they regarded only the first pull sideways as starting the oscillation, whereas the problem was concerned with the subsequentswinging, which wasnot the same. If it were accepted + +that B = x x)2 = x3 - 2 1x2 dB 122, then -= 3 x2 - 4 lx 12 = 0, a2 therefore, x = 4 1, whichwas the answer...