The water content of a saturated soil is 25%. The specific gravity is 2.7 and the unit weight of water is 9.8 kN/m^3. The saturated unit weight (kN/m3) is most nearly 17.3 19.8 O 18 The water content of a soil is 25%. The degree of saturation is 90%. The specific gravity is 2.7 and the unit weight of water is 9.8 kN/m3. The bulk (moist) unit weight (kN/m3) is most nearly 17.9 O 19.8 AO 18.9