Principles of Geotechnics







Preface

Principles of Geotechnical Engineering was originally published with a 1985 copyright

and was intended for use as a text for the introductory course in geotechnical engineering

taken by practically all civil engineering students, as well as for use as a reference book

for practicing engineers. The book was revised in 1990, 1994, 1998, 2002, and 2006. This

Seventh Edition is the twenty-fifth anniversary edition of the text. As in the previous

editions of the book, this new edition offers an overview of soil properties and mechanics,

together with coverage of field practices and basic engineering procedures without changing

the basic philosophy in which the text

was

written originally.

Unlike the Sixth Edition that had 17 chapters, this edition has 18 chapters. For better

understanding and more comprehensive

coverage,

Weight-Volume Relationships and

Plasticity and Structure of Soil are now presented in two separate chapters (Chapters 3 and

4). Most of the example and homework problems have been changed and/or modified.

Other noteworthy changes for the Seventh Edition are

- New scanning electron micrographs for quartz, mica, limestone, sand grains, and

clay minerals such as kaolinite and montmorillonite have been added to Chapter 2.

- A summary of recently published empirical relationships between liquid limit, plastic

limit, plasticity index, activity, and clay-size fractions in a soil mass have been

incorporated in Chapter 4.

- The USDA Textural Classification of Soil has now been added to Chapter 5

(Classification of Soil).

- Additional empirical relationships for hydraulic conductivity for granular and

cohesive soils have been added, respectively, to Chapter 7 (Permeability) and

Chapter 17 (Landfill Liners and Geosynthetics).

- The presentation of the filter design criteria has been improved in Chapter 8

(Seepage).

- In Chapter 11 (Compressibility of Soil), the procedure for estimating elastic

settlement of foundations has been thoroughly revised with the inclusions of theories

by Steinbrenner (1934) and Fox (1948). A case study related to the consolidation

settlement due to a preload fill for construction of the Tampa VA Hospital is also

added to this chapter.


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