HES6194 - Geotechnical Design Foundation Engineering Unit Prepared by: Robert EVANS Faculty of Engineering and Industrial Sciences Swinburne University of Technology July, 2011.
HES6194 Geotechnical Design TABLE OF CONTENTS 1. INTRODUCTION 2. BEARING CAPACITY AND DESIGN OF SHALLOW FOUNDATIONS 2.1 Theory of Bearing Capacity 2.1 2.1.1 Terzaghi's Ultimate Bearing Capacity Equations 2.3 2.1.2 Meyerhof's Ultimate Bearing Capacity Equations (1963) 2.4 2.1.3 Hansen's Ultimate Bearing Capacity Equations (1970) 2.5 2.1.4 Vesic's Ultimate Bearing Capacity Equations (1975) 2.6 2.1.5 Effect of Water Table on Bearing Capacity 2.7 2.1.6 Effect of Eccentric Loading on Bearing Capacity 2.8 2.1.7 Factor of Safety 2.8 2.1.8 Overturning and Lifting of Shallow Footings 2.11 2.2 Bearing Capacity for Footing on Sloping Ground 2.12 3. RESIDENTIAL SLABS AND FOOTINGS TO AUSTRALIAN STANDARDS 3.1 Introduction to Expansive Soils and AS2870 3.1 3.2 Expansive Soils vs. Light Structures 3.3 3.2.1 Principle of Soil Suction 3.4 3.3 Site Classification to AS2870-1996 3.5 3.3.1 Methods of Site Classification 3.6 3.3.2 Effect of Trees 3.9 3.3.3 Additional Considerations for Site Classification 3.10 3.4 Typical Residential Type Footing Systems 3.10 3.4.1 Stiffened Raft Slabs 3.11 3.4.2 Waffle Raft Slabs 3.11 3.4.3 Strip Footing Systems 3.11 3.4.4 Pier and Beam or Pier and Slab Systems 3.12 3.5 Construction vs. AS2870 Equivalent Construction 3.12 3.6 Design of Slabs and Footings to AS2870-2011 3.13 3.6.1 Design of Stiffened Raft Slabs 3.13 3.6.2 Design of Waffle Raft Slabs 3.16 3.6.3 Design of Strip Footing Systems 3.17 3.6.4 Connection Between Internal and Edge Beams for Stiffened Raft Slabs 3.18 3.7 Stepped Footings 3.19 3.8 Footings Adjacent to Excavations or Services 3.20 3.9 Modified Stiffened Raft Slab Design (by Engineering Principles) 3.21 R. P. Evans (ii