Calculate the moist unit weight (Ym) of the sample. Taken from the field, the sample contains solids, water, and air and weighs 59.3 lbs.
Part 2: Soil Properties
The soil mass system contains air, water, and solid components. An important concept is that of the unit weight of soil and water, which is a reflection of the density.
Problems
Given: A 0.5 ft3 soil sample.
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Calculate the moist unit weight (Ym) of the sample. Taken from the field, the sample contains solids, water, and air and weighs 59.3 lbs.
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Determine the saturated unit weight “Ysat” of a fully saturated sample. The solid particles weigh 46.8 lbs. The total sample volume remains the same as given for Problem 1. While the weight of water in the sample is not provided it is known that the volume of water in the sample is 0.12 ft3.
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Calculate the dry unit weight of the sample “Yd” after oven drying. After drying, the sample weight is 46.8 lbs and contains only air and solid particles.
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Convert the answer to problems 1-3 to cgs units. Note that the answers retain the elements of weight divided by volume and that the cg system is reported in kg/m3.
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