Transmission And Substation Foundations - Technical Design Manual (TD06088E)

REVIEW OF SOIL MECHANICS, SOIL BEHAVIOR & GEOTECHNICAL SITE INVESTIGATIONS SECTION 2

CONTENTS

INTRODUCTION.............................................................................................

2-4

SOIL MECHANICS.........................................................................................

2-4

SITE INVESTIGATIONS................................................................................

2-13

SYMBOLS USED IN THIS SECTION

w n ......................................................................................Moisture Content 2-6 M................................................................................................................Mass 2-5 V........................................................................................................... Volume 2-6 S................................................................................ Degree of Saturation 2-6 e.......................................................................................................Void Ratio 2-6 n..........................................................................................................Porosity 2-6 γ d ............................................................ Dry Unit Weight (Dry Density) 2-6 γ t .............................................Wet (Total) Unit Weight (Wet Density) 2-6 USCS................................................Unified Soil Classification System 2-6 γ s ................................... Saturated Unit Weight (Saturated Density) 2-6 SL......................................................................................... Shrinkage Limit 2-7 PL................................................................................................Plastic Limit 2-7 LL.................................................................................................Liquid Limit 2-7 PI........................................................................................... Plasticity Index 2-7 L.I. .........................................................................................Liquidity Index 2-7 S t ............................................................................................ Soil Sensitivity 2-8 K t .....................................Torque Multiplier for Helical Piles/Anchors 2-8 σ ` ........................................................................................... Effective Stress 2-11 σ .................................................................................................... Total Stress 2-11 u................................................................................. Pore Water Pressure 2-11 c.........................................................................................................Cohesion 2-11

SOIL MECHANICS

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