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Weight-Volume_Phase_Diagram

Weight-Volume_Phase_Diagram - – Masses – Mass density...

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Weight-Volume Phase  Diagram Module-I

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Learning Objectives • Be able to convert volume to mass and vice- versa. • Be familiar with the FPS and SI units for mass  and volume computations. • Be familiar with the different phases in a soil  mass and their significance to construction.
Soil Grain Skeleton 1 cm 1 cm 1 cm Soil grains Water Air

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Phase Diagram Air Water Soil M V M w M D M A V A V W V D V V
Phase Diagram Relationships w or w M M V V Saturation M M content Water V V n Porosity BSG M V V V e ratio Void V M density Dry V M Density D D V W D W V material W D V D D + = + = = = = = = = = 1 ; 1 100 ; ; ) ( ; ; ) ( ; ) ( ; ) ( ρ ρ ρ ρ ρ

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Units and Conversion For problems involving SI units

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Unformatted text preview: – Masses – Mass density ( ρ ) • Unit weights ( γ ) are needed for: – Stress calculations. γ = ρ g γ D = ρ D *g g = 9.807 m/sec 2 Units and Conversions Mass Density of Water: – 1 Mg/m 3 or – 1000 kg/m 3 or – 1 g/mL or 1 g/cc Unit Weight of Water: – 3 Units and Conversions • The specific gravity of the soil solids is 2.71. Find the unit weight of the solids in lbs/ft 3 . A. 26.6 lbs/ft 3 B. 27.1 lbs/ft 3 C. 169.1 lbs/ft 3 D. 62.4 lbs/ft 3 The answer is 169.1 lbs/ft 3...
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Weight-Volume_Phase_Diagram - – Masses – Mass density...

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