Principles of Foundation Engineering / Edition 6

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Braja M. Das' Sixth Edition of PRINCIPLES OF FOUNDATION ENGINEERING maintains the careful balance of current research and practical field applications that has made it the leading text in foundation engineering courses. Featuring a wealth of worked-out examples and figures that help students with theory and problem-solving skills, the book introduces civil engineering students to the fundamental concepts and application of foundation analysis design. Throughout, Das emphasizes the judgment needed to properly apply the theories and analysis to the evaluation of soils and foundation design as well as the need for field experience. The sixth edition contains many new homework and worked-out problems.

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Editorial Reviews

A text that introduces undergraduate civil engineering students to the fundamental concepts and application of foundation analysis and design. This revised edition (second was 1990) incorporates current research and standards, including the United Soil Classification System, current reinforcement materials, and new designs for retaining walls. Both SI and English units are used throughout. Annotation c. Book News, Inc., Portland, OR (
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Product Details

  • ISBN-13: 9780495082460
  • Publisher: CL-Engineering
  • Publication date: 7/26/2006
  • Edition description: 6TH
  • Edition number: 6
  • Pages: 480
  • Product dimensions: 7.60 (w) x 9.30 (h) x 1.30 (d)

Meet the Author

Dr. Braja M. Das has been the Dean of the School of Engineering and Computer Science from August 1994 to the present at California State University, Sacramento. Prior to 1994, he was the Associate Vice President for Academic Affairs and Research at Southern Illinois University at Carbondale, Illinois. The author of more than 200 technical papers, his primary areas of research are shallow foundations, earth anchors, and geosynthetics. He received his Ph.D. from the University of Wisconsin, Madison.

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Table of Contents

Chapter 1 - Geotechnical Properties of Soil Introduction / Grain-Size Distribution / Size Limits for Soils / Weight-Volume Relationships / Relative Density / Atterberg Limits / Soil Classification Systems / Hydraulic Conductivity of Soil / Steady-State Seepage / Effective Stress / Consolidation / Calculation of Primary Consolidation Settlement / Time Rate of Consolidation / Degree of Consolidation Under Ramp Loading / Shear Strength / Unconfined Compression Test / Comments on Friction Angle / Correlations for Undrained Shear Strength, cu / Sensitivity / Problems / References Chapter 2 - Natural Soil Deposits and Subsoil Exploration Introduction / Natural Soil Deposits / Soil Origin / Residual Soil / Gravity Transported Soil / Alluvial Deposits / Lacustrine Deposits / Glacial Deposits / Aeolian Soil Deposits / Organic Soil / Subsurface Exploration / Purpose of Soil Exploration / Subsurface Exploration Program / Exploratory Borings in the Field / Procedures for Sampling Soil / Observation of Water Tables / Vane Shear Test / Cone Penetration Test / Pressuremeter Test (PMT) / Dilatometer Test / Coring of Rocks / Preparation of Boring Logs / Geophysical Exploration / Subsoil Exploration Report / Problems / References Chapter 3 - Shallow Foundations: Ultimate Bearing Capacity Introduction / General Concept / Terzaghi's Bearing Capacity Theory / Factor of Safety / Modification of Bearing Capacity Equations for Water Table / The General Bearing Capacity Equation / Meyerhof's Bearing Capacity, Shape, Depth, and Inclination Factors / Some Comments on Bearing Capacity Factor, Ny, and Shape Factors / A Case History for Bearing Capacity Failure / Effect of Soil Compressibility / Eccentrically Loaded Foundations / Ultimate Bearing Capacity under Eccentric Loading - Meyerhof's Theory / Eccentrically Loaded Foundation - Prakash and Saran's Theory / Bearing Capacity of a Continuous Foundation Subjected to Eccentric Inclined Loading / Problems / References Chapter 4 - Ultimate Bearing Capacity of Shallow Foundations: Special Cases Introduction / Foundation Supported by a Soil with a Rigid Base at Shallow Depth / Bearing Capacity of Layered Soils: Stronger Soil Underlain by Weaker Soil / Closely Spaced Foundations - Effect on Ultimate Bearing Capacity / Bearing Capacity of Foundations on Top of a Slope / Bearing Capacity of Foundations on a Slope / Uplift Capacity of Foundations / Problems / References Chapter 5 - Shallow Foundations: Allowable Bearing Capacity and Settlement Introduction / Vertical Stress Increase in a Soil Mass Caused by Foundation Load / Stress Due to a Concentrated Load / Stress Due to a Circularly Loaded Area / Stress Below a Rectangular Area / Average Vertical Stress Increase Due to a Rectangularly Loaded Area / Stress Increase Under an Embankment / Elastic Settlement / Elastic Settlement Based on the Theory of Elasticity / Elastic Settlement of Foundations on Saturated Clay / Improved Equation for Elastic Settlement / Settlement of Sandy Soil: Use of Strain Influence Factor / Range of Material Parameters for Computing Elastic Settlement / Settlement of Foundation on Sand Based and Standard Penetration Resistance / General Comments on Elastic Settlement Prediction / Seismic Bearing Capacity and Settlement of Granular Soil / Consolidation Settlement / Primary Consolidation Settlement Relationships / Three-Dimensional Effect on Primary Consolidation Settlement / Settlement Due to Secondary Consolidation / Field Load Test / Presumptive Bearing Capacity / Tolerable Settlement of Buildings / Problems / References Chapter 6 - Mat Foundations Introduction / Combined Footings / Common Types of Mat Foundations / Bearing Capacity of Mat Foundations / Differential Settlement of Mats / Field Settlement Observations for Mat Foundations / Compensated Foundation / Structural Design of Mat Foundations / Problems / References Chapter 7 - Lateral Earth Pressure Introduction / Lateral Earth Pressure at Rest / Active Pressure / Rankine Active Earth Pressure / A Generalized Case for Rankine Active Pressure / Coulomb's Active Earth Pressure / Active Earth Pressure for Earthquake Conditions / Active Pressure for Wall Rotation About the Top: Braced Cut / Active Earth Pressure for Translation of Retaining Wall - Granular Backfill / General Comments on Active Earth Pressure / Passive Pressure / Rankine Passive Earth Pressure / Rankine Passive Earth Pressure: Inclined Backfill / Coulomb's Passive Earth Pressure / Comments on the Failure Surface Assumption for Coulomb's Pressure Calculations / Passive Pressure under earthquake Conditions / Problems / References Chapter 8 - Retaining Walls Introduction / Gravity and Cantilever Walls / Proportioning Retaining Walls / Application of Lateral Earth Pressure Theories to Design / Stability of Retaining Walls / Check for Overturning / Check for Sliding Along the Base / Check for Bearing Capacity Failure / Construction Joints and Drainage from Backfill / Some Comments on Design of Retaining Walls / Mechanically Stabilized Retaining Walls / Soil Reinforcement / Considerations for Soil Reinforcement / General Design Considerations / Retaining Walls with Metallic Strip Reinforcement / Step-by-Step Design Procedure using Metallic Strip Reinforcement / Retaining Walls with Geotextile Reinforcement / Retaining Walls with Geogrid Reinforcement / General Comments / Problems / References Chapter 9 - Sheet Pile Walls Introduction / Construction Methods / Cantilever Sheet Pile Walls / Cantilever Sheet Piling Penetrating Sandy Soils / Special Cases for Cantilever Walls Penetrating a Sandy Soil / Cantilever Sheet Piling Penetrating Clay / Special Cases for Cantilever Walls Penetrating Clay / Anchored Sheet Pile Walls / Free Earth Support Method for Penetration of Sandy Soil / Design Charts for Free Earth Support Method (Penetration into Sandy Soil) / Moment Reduction for Anchored Sheet Pile Walls / Computational Pressure Diagram Method for Penetration into Sandy Soil / Free Earth Support Method for Penetration of Clay / Anchors / Holding Capacity of Anchor Plates in Sand / Holding Capacity of Anchor Plates in Clay / Ultimate Resistance of Tie Backs / Problems / References Chapter 10 - Braced Cuts Introduction / Pressure Envelope for Braced-Cut Design / Pressure Envelope for Cuts in Layered Soil / Design of Various Components of a Braced Cut / Bottom Heave of a Cut in Clay / Stability of the Bottom of a Cut in Sand / Lateral Yielding of Sheet Piles and Ground Settlement / Problems / References Chapter 11 - Pile Foundations Introduction / Types of Piles and Their Structural Characteristics / Estimating Pile Length / Installation of Piles / Load Transfer Mechanism / Equations for Estimating Pile Capacity / Meyerhof's Method for Estimating Qp / Vesic's Method for Estimating Qp / Janbu's Method for Estimating Qp / Coyle and Castello's Method for Estimating Qp in Sand / Other Correlations for Calculation of Qp with SPT and CPT Results / Frictional Resistance (Qs) in Sand / Frictional (Skin) Resistance in Clay / Point Bearing Capacity of Piles Resting on Rock / Pile Load Tests / Comparison of Theory with Field Load Test Results / Elastic Settlement of Piles / Laterally Loaded Piles / Pile-Driving Formulas / Pile Capacity for Vibration-Driven Piles / Negative Skin Friction / Group Piles / Group Efficiency / Ultimate Capacity of Group Piles in Saturated Clay / Elastic Settlement of Group Piles / Consolidation Settlement of Group Piles / Piles in Rock / Problems / References Chapter 12 - Drilled-Shaft Foundations Introduction / Types of Drilled Shafts / Construction Procedures / Other Design Considerations / Load Transfer Mechanism / Estimation of Load-Bearing Capacity / Drilled Shafts in Granular Soil: Load-Bearing Capacity / Drilled Shafts in Clay: Load-Bearing Capacity / Settlement of Drilled Shafts at Working Load / Lateral Load-Carrying Capacity - Characteristic Load and Moment Method / Drilled Shafts Extending Into Rock / Problems / References Chapter 13 - Foundations on Difficult Soils Introduction / Collapsible Soil / Definition and Types of Collapsible Soil / Physical Parameters for Identification / Procedure for Calculation Collapse Settlement / Foundation Design in Soils Not Susceptible to Wetting / Foundation Design in Soils Susceptible to Wetting / Expansive Soils / General Nature of Expansive Soils / Laboratory Measurement of Swell / Classification of Expansive on the Basis of Index Tests / Foundation Considerations for Expansive Soils / Construction of Expansive Soils / Sanitary Landfills / General Nature of Sanitary Landfills / Settlement of Sanitary Landfills / Problems / References Chapter 14 - Soil Improvement and Group Modification Introduction / General Principles of Compaction / Correction for Compaction of Soils with Oversized Particles / Field Compaction / Compaction Control for Clay Hydraulic Barriers / Vibroflotation / Precompression / Sand Drains / Prefabricated Vertical Drains / Lime Stabilization / Cement Stabilization / Fly Ash Stabilization / Stone Columns / Sand Compaction Piles / Dynamic Compaction / Jet Grouping / Problems / References Appendix Answers to Selected Problems

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