Soil Liquefaction During Earthquakes


PREFACE

The 1982 monograph, Ground Motions and Soil Liquefaction during

Earthquakes, by H. Bolton Seed and I. M. Idriss, met the need at

that time for a simple representation of the essential elements of both

earthquake ground motions and soil liquefaction that could be readily

understood by engineers who have no particular familiarity with the

field.






When we set out to update that monograph, it quickly became

clear that a single monograph could no longer provide sufficient coverage

of both earthquake ground motions and soil liquefaction. The

body of knowledge about these topics has grown so considerably

that the current need, which is markedly different from 26 years

ago, is for a thorough synthesis of the last 26 years of progress

into one accessible resource for students, practicing engineers, and

other professionals. Fulfilling such a need for both ground motions

and soil liquefaction was impractical within the format of a single

monograph, and therefore we chose to focus this monograph on soil

liquefaction.


A draft of this monograph was sent to Drs. Jonathan D. Bray,

Steven L. Kramer, Bruce L. Kutter, Lelio H. Mejia, James K. Mitchell,

Yoshi Moriwaki, Jonathan P. Stewart, and Daniel W. Wilson for their

review and comments. Dr. Wilson also checked the equations and the

figures for correctness and consistency.

The comments and suggestions we received were extensive, detailed,

comprehensive, and on target. We believe that, in addressing

these comments and incorporating many of the suggestions, the quality

of the monograph has been significantly enhanced.

We are very grateful to these colleagues for generously giving

of their time and for providing such valuable and thorough input.



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