Synopses & Reviews
Building on the success of preceding editions, the Fourth Edition of PRINCIPLES OF FOUNDATION ENGINEERING maintains the careful balance of current research and practical field applications that has made it a leading text in foundation engineering courses throughout the country and internationally. Strengthened with many more worked-out examples and figures to aid student comprehension of theory and practical problem-solving skills, the Fourth Edition features expanded coverage of ultimate and allowable bearing capacity (in Chapters 3 and 4), and new Chapters 6 and 7 on lateral pressure theory and retaining wall design. New field observations have been added to each chapter. Both SI and English units are used throughout.
Synopsis
Braja M. Das' Fifth 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.
About 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.
Table of Contents
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 Concept. ConsolidationXGeneral. Primary Consolidation Settlement Calculation. Time Rate of Consolidation. Degree of Consolidation Under Ramp Loading. Shear Strength. Unconfined Compression Test. Comments on Friction Angle, ƒÚ. Correlations for Undrained Shear Strength, cu. Sensitivity. 2. NATURAL SOIL DEPOSITS AND SUBSOIL EXPLORATION. Introduction. Soil Origin. Residual Soil. Alluvial Deposits. Glacial Deposits. Aeolian Soil Deposits. Organic Soil. 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. 3. SHALLOW FOUNDATIONS: ULTIMATE BEARING CAPACITY. Introduction. General Concept. Terzaghis Bearing Capacity Theory. Factor of Safety. Modification of Bearing Capacity Equations for Water Table. Case History: Ultimate Bearing Capacity in Saturated Clay. The General Bearing Capacity Equation. Meyerhofs Bearing Capacity, Shape, Depth, and Inclination Factors. Effect of Soil Compressibility. Eccentrically Loaded Foundations. 4. ULTIMATE BEARING CAPACITY OF SHALLOW FOUNDATIONSXSPECIAL CASES. Introduction. Foundation Supported by a Soil with a Rigid Base at Shallow Depth. Bearing Capacity of Layered SoilsXStrong Underlain by Weaker Soil. Bearing Capacity of Foundations on Top of a Slope. 5. SHALLOW FOUNDATIONS: ALLOWABLE BEARING CAPACITY AND SETTLEMENT. Introduction. 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 Based on the Theory of Elasticity. Improved Relationship for Elastic Settlement. Settlement of Sandy Soil: Use of Strain Influence Factor. Elastic Settlement of Sandy Soil: Use of Burland and Burbidges Method. Range of Material Parameters for Computing Elastic Settlement. Seismic Bearing Capacity and Settlement of Granular Soil. Primary Consolidation Settlement Relationships. Three-Dimensional Effect on Primary Consolidation Settlement. Consolidation SettlementXA Case History. Settlement Due to Secondary Consolidation. Allowable Bearing Pressure in Sand Based on Settlement Consideration. Field Load Test. Presumptive Bearing Capacity. Tolerable Settlement of Buildings. 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. 7. LATERAL EARTH PRESSURE. Introduction. Lateral Earth Pressure at Rest. Rankine Active Earth Pressure. Rankine Active Earth Pressure for Inclined Backfill. Coulombs Active Earth Pressure. Active Pressure for Wall Rotation About the TopXBraced Cut. Rankine Passive Earth Pressure. Rankine Passive Earth PressureXInclined Backfill. Coulombs Passive Earth Pressure. Comments on the Failure Surface Assumption for Coulombs Pressure Calculations. 8. RETAINING WALLS. Introduction. Proportioning Retaining Walls. Application of Lateral Earth Pressure Theories to Design. Equivalent Fluid Method for Determination of Earth Pressure. General Comments on Lateral Earth Pressure. Stability of Retaining Walls. Check for Overturning. Check for Sliding Along the Base. Check for Bearing Capacity Failure. Construction Joint and Drainage from Backfill. Soil ReinforcementXGeneral. Considerations for Soil Reinforcement. General Design Considerations. Retaining Walls with Metallic Strip Reinforcement. Step-by-Step Design Procedure (Metallic Strip Reinforcement). Retaining Walls with Geotextile Reinforcement. Retaining Walls with Geogrid Reinforcement. General Comments. 9. SHEET PILE WALLS. Introduction. Construction Methods. Cantilever Sheet Pile WallsXGeneral. 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 WallsXGeneral. Free Earth Support Method for Penetration of 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. AnchorsXGeneral. Holding Capacity of Anchor Plates in Sand. Ultimate Resistance of Tie Backs. Field Observations for Anchored Sheet Pile Walls. 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. Subway Extension of the Massachusetts Bay Transportation Authority (MBTA)XA Case Study. 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. Meyerhofs MethodXEstimation of Qp. Vesics MethodXEstimation of Qp. Janbus MethodXEstimation of Qp. Coyle and Castellos MethodXEstimation of Qp in Sand. Other Correlations for Calculation of Qp with SPT and CPT Results. Frictional Resistance (Qs) in Sand. Frictional (Skin) Resistance in Clay. General Comments and Allowable Pile Capacity. 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. Stress on Piles During Pile Driving. Pile Capacity for Vibration-Drive Piles. Negative Skin Friction. Group Efficiency. Ultimate Capacity of Group Piles in Saturated Clay. Piles in Rock. Elastic Settlement of Group Piles. Consolidation Settlement of Group Piles. 12. DRILLED-SHAFT FOUNDATIONS. Introduction. Types of Drilled Shafts. Construction Procedures. Other Design Considerations. Load Transfer Mechanism. Estimation of Load-Bearing CapacityXGeneral. Drilled Shafts in SandXLoad-Bearing Capacity. Drilled Shafts in ClayXLoad-Bearing Capacity. Settlement of Drilled Shafts at Working Load. Lateral Load-Carrying Capacity. Drilled Shafts Extending Into Rock. 13. FOUNDATIONS ON DIFFICULT SOILS. Introduction. 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. Case Histories of Stabilization of Collapsible Soil. Expansive SoilsXGeneral. Laboratory Measurement of Swell. Classification of Expansive Soil Based on Index Tests. Foundation Considerations for Expansive Soils. Construction of Expansive Soils. Sanitary LandfillsXGeneral. Settlement of Sanitary Landfills. 14. SOIL IMPROVEMENT AND GROUP MODIFICATION. Introduction. CompactionXGeneral Principles. Correction for Compaction of Soils with Oversized Particles. Field Compaction. Compaction Control for Clay Hydraulic Barriers. Vibroflotation. PrecompressionXGeneral Considerations. Sand Drains. An Example of a Sand Drain Application. Prefabricated Vertical Drains (PVDs). Lime Stabilization. Cement Stabilization. Fly Ash Stabilization. Stone Columns. Sand Compaction Piles. Dynamic Compaction. APPENDIX.