(a) $1500 \mathrm{~m}^{3}$ of earth fill is to be constructed. How many cubic meters of soil are required to be excavated from borrow pit in which the void ratio is 0.90 , if the void ratio of earth fill is to be 0.70 .
Explanation
The void ratio is a measure of the volume of voids in a soil. The formula used is based on the principle that the volume of voids in the borrow pit is equal to the volume of voids in the earth fill, minus the volume of voids in the earth fill that are occupied by the soil particles. This formula is used to calculate the volume of soil required to be excavated from the borrow pit.
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