- - - - - - - Basic Definitions: Voids ratio Porosity Specific gravity Degree of saturation Water content Y = W/V Ysat When S=100% e = V/Vs n = V₁/V G = (Ws/Vs)/Yw S = V w/Vv W = WW/WS Yd = Ws/V = Ybuoyant Ysat Yw 1. For a soil sample, prove or derive the following relationships: Y= Y = G(1+w) 1+e G Ya 1+e - Yw Yw