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Fundamentals of Geotechnical Engineering Third Edition by Braja M. Das PDF Free Download.
Principles of Foundation Engineering and Principles of Geotechnical Engineering were originally published in 1984 and 1985, respectively.
These texts were well received by instructors, students, and practitioners alike. Depending on the needs of the users, the texts were revised and are presently in their sixth editions.
Toward the latter part of 1998, there were several requests to prepare a single volume that was concise in nature but combined the essential components of Principles of Foundation Engineering and Principles of Geotechnical Engineering.
In response to those requests, the first edition of Fundamentals of Geotechnical Engineering was published in 2000, followed by the second edition in 2004 with a 2005 copyright.
These editions include the fundamental concepts of soil mechanics as well as foundation engineering, including bearing capacity and settlement of shallow foundations (spread footings and mats),
Retaining walls, braced cuts, piles, and drilled shafts. This third edition has been revised and prepared based on comments received from the users.
As in the previous editions, SI units are used throughout the text. This edition consists of 14 chapters. The major changes from the second edition include the following:
• The majority of example problems and homework problems are new. • Chapter 2 on “Soil Deposits and Grain-Size Analysis” has an expanded discussion on residual soil, alluvial soil, lacustrine deposits, glacial deposits, aeolian deposits, and organic soil.
• Chapter 3 on “Weight-Volume Relationships, Plasticity, and Soil Classification” includes recently published relationships for maximum and minimum void ratios as they relate to the estimation of relative density of granular soils. The fall cone method to determine liquid and plastic limits has been added.
• Recently published empirical relationships to estimate the maximum unit weight and optimum moisture content of granular and cohesive soils are included in Chapter 4 on “Soil Compaction.”
• Procedures to estimate the hydraulic conductivity of granular soil using the results of grain-size analysis via the Kozeny-Carman equation are provided in Chapter 5, “Hydraulic Conductivity and Seepage.”
• Chapter 6 on “Stresses in a Soil Mass” has new sections on Westergaard’s solution for vertical stress due to point load, line load of finite length, and rectangularly loaded area.
• Additional correlations for the degree of consolidation, time factor, and coefficient of secondary consolidation are provided in Chapter 7 on “Consolidation.”
• Chapter 8 on “Shear Strength of Soil” has extended discussions on sensitivity, thixotropy, and anisotropy of clays.
• Spencer’s solution for stability of simple slopes with steady-state seepage has been added in Chapter 9 on “Slope Stability.”
• Recently developed correlations between relative density and corrected standard penetration number, as well as angle of friction and cone penetration resistance have been included in Chapter 10 on “Subsurface Exploration.”
• Chapter 11 on “Lateral Earth Pressure” now has graphs and tables required to estimate passive earth pressure using the solution of Caquot and Kerisel.
• Elastic settlement calculation for shallow foundations on granular soil using the strain-influence factor has been incorporated into Chapter 12 on “Shallow Foundations––Bearing Capacity and Settlement.”
• Design procedures for mechanically stabilized earth retaining walls is included in Chapter 12 on “Retaining Walls and Braced Cuts.”
It is important to emphasize the difference between soil mechanics and foundation engineering in the classroom.
Soil mechanics is the branch of engineering that involves the study of the properties of soils and their behavior under stresses and strains under idealized conditions.
Foundation engineering applies the principles of soil mechanics and geology in the plan, design, and construction of foundations for buildings, highways, dams, and so forth.
Approximations and deviations from idealized conditions of soil mechanics become necessary for proper foundation design because, in most cases, natural soil deposits are not homogeneous.
However, if a structure is to function properly, these approximations can be made only by an engineer who has a good background in soil mechanics.
This book provides that background. Fundamentals of Geotechnical Engineering is abundantly illustrated to help students understand the material.
Several examples are included in each chapter. At the end of each chapter, problems are provided for homework assignment, and they are all in SI units.
My wife, Janice, has been a constant source of inspiration and help in completing the project. I would also like to thank Christopher Carson, General Manager,
And Hilda Gowans, Senior Development Editor, of Thomson Engineering for their encouragement, help, and understanding throughout the preparation and publication of the manuscript.
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