It is required to deepen a lake by 1.50 m over an area of 50 m x 150 m. There is water to a depth of 1.0 m in the lake. The unit weight of the soil at the bottom of the lake is 19.5 kN/m3, and the specific gravity of the soil grains is 2.70. What is the in situ water content of the soil at the bottom of the lake?

It is proposed to lower the water table to the ground level and carry out the required excavation. The soil removed will be air dried and placed as compacted fill in a nearby earthwork, at dry unit weight of 18.0 kN/m3. What would be the height of the compacted fill, when the soil is placed over an area of 100 m x 100 m?

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Determine the void ratio at the bottom of the lake e using the relation Here is saturated unit weigh... View the full answer