Shallow Foundations: Discussions and Problem Solving is written for civil engineers and all civil engineering students taking courses in soil mechanics and geotechnical engineering. It covers the analysis, design and application of shallow foundations, with a primary focus on the interface between the structural elements and underlying soil.
Shallow Foundations: Discussions and Problem Solving is written for civil engineers and all civil engineering students taking courses in soil mechanics and geotechnical engineering. It covers the analysis, design and application of shallow foundations, with a primary focus on the interface between the structural elements and underlying soil. Topics such as site investigation, foundation contact pressure and settlement, vertical stresses in soils due to foundation loads, settlements, and bearing capacity are all fully covered, and a chapter is devoted to the structural design of different types of shallow foundations. It provides essential data for the design of shallow foundations under normal circumstances, considering both the American (ACI) and the European (EN) Standard Building Code Requirements, with each chapter being a concise discussion of critical and practical aspects. Applications are highlighted through solving a relatively large number of realistic problems. A total of 180 problems, all with full solutions, consolidate understanding of the fundamental principles and illustrate the design and application of shallow foundations.
Table of Contents
PREFACE
1.SITE INVESTIGATION IN RELATION TO ANALYSIS & DESIGN OF SHALLOW FOUNDATIONS
1.1 GENERAL
1.2 SITE INVESTIGATION
1.2.1 Reconnaissance
1.2.2 Subsurface Exploration
1.2.3 Laboratory Tests
1.2.4 Compiling Information
1.2.5 Final Geotechnical Report
Problem Solving
(Discussions and Solutions of 27 Problems Are Presented)
References
2.SHALLOW FOUNDATIONS – INTRODUCTORY CHAPTER
2.1 GENERAL
2.2 TYPES OF FOUNDATIONS
2.3 DEPTH OF FOUNDATIONS
2.4 FOUNDATION PERFORMANCE REQUIREMENTS
2.4.1 General
2.4.2 Strength Requirements
2.4.3 Serviceability Requirements
2.4.4 Constructibility Requirements
2.4.5 Economy Requirements
2.5 SULFATE AND ORGANIC ACID ATTACK ON CONCRETE
2.5.1 Sulfate Attack
2.5.2 Organic-Acid Attack
2.6 PRESSURES UNDER FOUNDATIONS
2.6.1 Contact Pressure and Contact Settlement
2.6.2 Contact Pressure under Eccentrically Loaded Spread Footings
2.7 VERTICAL STRESSES IN SOILS DUE TO FOUNDATION LOADS
2.7.1 General
2.7.2 Vertical Stress Due to a Concentrated Load
2.7.3 Vertical Stress Due to a Line Load
2.7.4 Vertical Stress Due to a Uniformly Loaded Strip Area
2.7.5 Vertical Stress Due to a Uniformly Loaded Circular Area
2.7.6 Vertical Stress Due to a Uniformly Loaded Rectangular Footing
2.7.7 Newmark’s Chart Method of Determining Vertical Stresses
2.7.8 Pressure Bulbs Method of Determining Vertical Stresses
2.7.9 Average Vertical Stress Due to a Loaded Rectangular Area
2.7.10 Westergaard's Equations
Problem Solving
(Solutions of 21 Problems Are Presented)
References
3.SHALLOW FOUNDATIONS – SETTLEMENTS
3.1 GENERAL
3.2 IMMEDIATE SETTLEMENT
3.3 SETTLEMENT OF FOUNDATIONS ON COARSE–GRAINED SOILS
3.3.1 General
3.3.2 Estimation of Settlements from SPT
3.3.3 Estimation of Settlements from CPT
3.4 SETTLEMENT OF FOUNDATIONS ON FINE–GRAINED SOILS
3.4.1 General
3.4.2 Immediate Settlement of Fine-grained Soils
3.4.3 Consolidation Settlement
3.4.4 Estimation of the Rate of Consolidation Settlement
3.4.5 Method of Accelerating the Rate of Consolidation Settlement
3.4.6 Estimation of Settlements over the Construction Period
3.4.7 Secondary Compression
3.5 SETTLEMENT OF FOUNDATIONS ON ROCKS
Problem Solving
(Solutions of 56 Problems Are Presented)
References
4. SHALLOW FOUNDATIONS – BEARING CAPACITY
4.1 GENERAL
4.2 BASIC DEFINITIONS
4.3 GROSS AND NET FOUNDATION PRESSURES
4.4 BEARING CAPACITY FAILURE MECHANISM FOR LONG (STRIP) FOOTINGS
4.5 BEARING CAPACITY EQUATIONS
4.6 SOME CONSIDERATIONS CONCERNING THE USE OF BEARING CAPACITY EQUATIONS
4.7 BEARING CAPACITY OF FOOTINGS WITH INCLINED LOADS
4.8 BEARING CAPACITY OF FOOTINGS WITH ECCENTRIC LOADS
4.9 EFFECT OF WATER TABLE ON BEARING CAPACITY
4.10 INFLUENCE OF SOIL COMPRESSIBILITY ON BEARING CAPACITY
4.11 EFFECT OF ADJACENT FOOTINGS ON BEARING CAPACITY
4.12 BEARING CAPACITY OF FOUNDATIONS ON SLOPES
4.12.1 General
4.12.2 Solutions
4.13 BEARING CAPACITY OF FOOTINGS ON LAYERED SOILS
4.13.1 General
4.13.2 Ultimate Bearing Capacity:Stronger Soil Underlain by Weaker Soil
4.13.3 Ultimate Bearing Capacity:Weaker Soil Underlain by Stronger Soil
4.14 SAFETY FACTOR (SF)
4.15 BEARING CAPACITY FROM RESULTS OF IN-SITU TESTS
4.16 UPLIFT CAPACITY OF SHALLOW FOUNDATIONS
4.17 SOME COMMENTS AND CONSIDERATIONS CONCERNING GEOTECHNICAL DESIGN OF SHALLOW FOUNDATIONS
4.18 BEARING CAPACITY OF ROCK
Problem Solving
(Solutions of 40 Problems Are Presented)
References
5.SHALLOW FOUNDATIONS–STRUCTURAL DESIGN
5.1 GENERAL
5.2 DESIGN LOADS
5.3 SELECTION OF MATERIALS
5.4 STRUCTURAL ACTION OF VERTICALLY AND CENTRALLY LOADED ISOLATED AND CONTINUOUS (STRIP) FOOTINGS
5.4.1 General
5.4.2 Flexure
5.4.3 Shear
5.4.4 Development of Reinforcement
5.4.5 Transfer of Force at Base of Column, Wall, or Pedestal
5.5 ECCENTRICALLY LOADED SPREAD FOOTINGS
5.6 PEDESTALS
5.7 PILE CAPS
5.8 PLAIN CONCRETE SPREAD FOOTINGS
5.9 COMBINED FOOTINGS
5.9.1 General
5.9.2 Rectangular Combined Footings
5.9.3 Trapezoidal Combined Footings
5.9.4 Strap (or Cantilever) Footings
5.10 MODULUS OF SUBGRADE REACTION
5.11 BEAMS ON ELASTIC FOUNDATIONS
5.12 MAT FOUNDATIONS
5.12.1 General
5.12.2 Design Procedure for the Conventional (Rigid) Method
5.12.3 Design Procedure for the Approximate Flexible Method
5.12.4 Finite Difference Method (FDM) for Design of Mat Foundations
5.12.5 Modulus of Subgrade Reaction and Node Coupling of Soil Effects for Mats
5.12.6 Finite Element Method (FEM) for Design of Mat Foundations
5.12.7 Finite Grid Method (FGM) for Design of Mat Foundations
Problem Solving
(Solutions of 28 Problems Are Presented)
References
6.EUROCODE STANDARDS IN RELATION TO DESIGN OF SPREAD FOUNDATIONS
6.1 GENERAL
6.2 BASIS OF DESIGN IRRESPECTIVE OF THE MATERIAL OF CONSTRUCTION
6.2.1 Introduction
6.2.2 Terms and definitions
6.2.3 Requirements
6.2.4 Quality Management
6.2.5 Principles of Limit States Design
6.3 DESIGN OF SPREAD FOUNDATIONS
6.3.1 Introduction
6.3.2 Geotechnical Categories
6.3.3 Limit States
6.3.4 Geotechnical Design
6.3.5 Structural Design
Problem Solving
(Solutions of 8 Problems Are Presented)
References
Index
See Less