In a fill section of a construction site, 1500 m3 of moist compacted soils is required. The design water content of the fill is 15%, and the design unit weight of the compacted soil is 18.5 kN/m3. Necessary soil is brought from a borrow site, with the soil having 12% natural water content, 17.5 kN/m3 wet unit weight, and Gs = 2.65.  How much (in cubic meters) of the borrow material is required to fill the construction fill section? And how heavy is it?

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Basic Concepts of Water Resource Sustainability

The majority of the earth's surface is composed of water. The water which is available for use by the living beings on earth comes from various water resources. Water resources are the naturally occurring water bodies that are intended to be used by the living beings on earth for drinking and other uses. Water resources provide 3% as freshwater, 97% as saltwater, two-thirds of which are frozen as glaciers and ices. The remaining water which generally doesn't remain frozen are the water resources found underground, precisely known as groundwater. The majority of these water sources act as non-convention sources of power generation, like in hydropower stations.