A) A soil sample with wet mass of 1.0 kg and a volume of 0.64 liter (6.4 x 10 -4 m3) was dried in the oven and found to have a dry mass of 0.8 kg. Assuming the typical value of particle density for a mineral soil (2650 kg/m3), determine the following properties of the soil: a) dry bulk density, ?? b) porosity, f c) void ratio, e d) mass wetness, w e) volume wetness, ? f) water volume ratio, vw g) degree of saturation, s h) air-filled porosity, fa
A) A soil sample with wet mass of 1.0 kg and a volume of 0.64 liter (6.4 x 10 -4 m3) was dried in the oven and found to have a dry mass of 0.8 kg. Assuming the typical value of particle density for a mineral soil (2650 kg/m3), determine the following properties of the soil:
- a) dry bulk density, ??
- b) porosity, f
- c) void ratio, e
- d) mass wetness, w
- e) volume wetness, ?
- f) water volume ratio, vw
- g) degree of saturation, s
- h) air-filled porosity, fa
B) Determine the equivalent depth of water contained in a 1-m soil profile if the mass wetness of the upper 0.2 m is 15 %, 30% for the 0.2 m to 0.6 m layer, and that of the lower 0.4 m is 25%. Assume a bulk density of 1200 kg/m3 in the upper layer, 1280 kg/m3 in the 0.2 to 0.6 m layer, and 1400 kg/m3 in the lower 0.4 m layer. Also, determine how much water the soil contains in cubic meters per hectare of land. (Note: 1 ha = 104 m2). (5 marks)
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Determine the equivalent depth of water contained in a 1-m soil profile if the mass wetness of the upper 0.2 m is 15 %, 30% for the 0.2 m to 0.6 m layer, and that of the lower 0.4 m is 25%. Assume a bulk density of 1200 kg/m3 in the upper layer, 1280 kg/m3 in the 0.2 to 0.6 m layer, and 1400 kg/m3 in the lower 0.4 m layer. Also, determine how much water the soil contains in cubic meters per hectare of land. (Note: 1 ha = 104 m2).
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