ENCN253 16S2: Soil Mechanics Assignment 1 [65marks] DUE: Friday July 29 at 2pm (in ENCN 253 homework boxes) Guidelines: Please write your solutions...

The values of emin and emax for a pure silica sand (Gs = 2.653) were found to be 0.632 and 0.962,respectively.a) What is the corresponding range in dry density (in kg/m3) and dry unit weight (in kN/m3)?b) If the in-situ void ratio is 0.762, what is the relative density? Give a term to classify the relative density.c) If 1.2 kg of dry soil at the in-situ void ratio were then to be 73% saturated in a mould, what would be its total mass (in kg)? What would be its volume (in cm3)? What would be the bulk unit weight(in kN/m3)?d) If a vibration was applied to the soil in the mould, via a vibrating table, so that the volume is reduced by 2.4%, what would be the new void ratio, relative density and degree of saturation?Give a term to classify the new relative density.