You obtain a soil sample with a volume of 350 cm^3. It has a moist weight of 450
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You obtain a soil sample with a volume of 350 cm^3. It has a moist weight of 450 g and an oven- dry weight of 400 g. Determine the soil bulk density, the porosity, the volumetric water content and the gravimetric water content. Bulk Density Porosity. Gravimetric water content Volumetric water content You obtain a soil sample with a volume of 375 cm^3. It has a moist weight of 475 g and an oven- dry weight of 350 g. Determine the soil bulk density, the porosity, the volumetric water content and the gravimetric water content. Bulk Density Porosity. Gravimetric water content Volumetric water content Is the soil saturated? How do you know ? You obtain a soil sample with a volume of 200 cm^3. It has a moist weight of 275 g and an oven- dry weight of 225 g. Determine the soil bulk density, the porosity, the volumetric water content and the gravimetric water content. porosity. Gravimetric water content Volumetric water content What is the total volume of water in this soil? What volume of water would be required to completely saturate this soil?Explanation / Answer
3) Bulk density = dry mass / volume of soil
= 400 / 350
= 1.142 g / cm^3
Porosity = 1 - (B.D/P.D) = 1 - (1.142 / 2.66)
porosity = 0.57
Gravimetric water content = 450 - 400 = 50 g
Volumetric = 50 / 1 = 50 cm^3 (water density = 1)
4) Bulk density = dry mass / volume of soil
= 350 / 375
= 0.933 g / cm^3
Porosity = 1 - (B.D/P.D) = 1 - (0.933 / 2.66)
porosity = 0.649
Gravimetric water content = 475 - 350 = 75 g
Volumetric = 75 / 1 = 75 cm^3 (water density = 1 g/ cm^3)
5) Bulk density = dry mass / volume of soil
= 225 / 200
= 1.125 g / cm^3
Porosity = 1 - (B.D/P.D) = 1 - (1.125 / 2.66)
porosity = 0.577
Gravimetric water content = 275 - 225 = 50 g
Volumetric = 50 / 1 = 50 cm^3 (water density = 1 g/ cm^3)
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