sma02 - Basic Definitions and Terminology Soil is generally...

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Unformatted text preview: Basic Definitions and Terminology Soil is generally a three phase material Contains solid particles and voids Voids can contain liquid and gas phases Solid Water Air V s V w V a Soil is generally a three phase material Contains solid particles and voids Voids can contain liquid and gas phases Solid Water Air V s V w V a Soil is generally a three phase material Contains solid particles and voids Voids can contain liquid and gas phases Solid Water Air P h ase V o lu m e M ass W eig h t A ir V a 0 0 W ater V w M w W w S o lid V s M s W s V s V w V a Units Length metres Mass tonnes (1 tonne = 10 3 kg) Density t/m 3 Weight kilonewtons (kN) Stress kilopascals (kPa) 1 kPa= 1 kN/m 2 Unit weight kN/m 3 Accuracy Density of water, w = 1 t/m 3 Stress/Strength to 0.1 kPa Weight and Unit weight Force due to mass (weight) more important than mass W = M g Unit weight Weight and Unit weight Force due to mass (weight) more important than mass W = M g Unit weight = g Weight and Unit weight Force due to mass (weight) more important than mass W = M g Unit weight = g v z v = g z v = z Specific Gravity G s 2245 2.65 for most soils G s is useful because it enables the volume of solid particles to be calculated from mass or weight G Densityof Material Densityof Water w = = G UnitWeight of Material UnitWeight of Water w = = This is defined by Specific Gravity G s 2245 2.65 for most soils G s is useful because it enables the volume of solid particles to be calculated from mass or weight G Densityof Material Densityof Water w = = G UnitWeight of Material UnitWeight of Water w = = This is defined by V M M G W W G s s s s s w s s s s w = = = = Voids...
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This note was uploaded on 08/30/2011 for the course CIVL 2410 taught by Professor Dairey during the Three '11 term at University of Sydney.

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sma02 - Basic Definitions and Terminology Soil is generally...

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