(Solved): A soil has e=0.75,w=21.5%, and Gs=2.71. Determine: a. Moist unit weight (lb/ft3) b. Dry unit wei ...

A soil has $e=0.75,w=21.5\%$, and $G_s=2.71$. Determine: a. Moist unit weight $\left(\mathrm{lb}/{\mathrm{ft}}^3\right)$ b. Dry unit weight $\left(\mathrm{lb}/{\mathrm{ft}}^3\right)$ c. Degree of saturation (\%) Problem 8: The moist unit weights and degrees of saturation of a soil are given in the table. Determine: a. $e$ b. $G_x$ For a given sandy soil, the maximum and minimum dry unit weights are 108 $\mathrm{lb}/{\mathrm{ft}}^3$ and $92\mathrm{lb}/{\mathrm{ft}}^3$, respectively. Given $G_s=2.65$, determine the moist unit weight of this soil when the relative density is $60\%$ and the moisture content is $8\%$. A loose, uncompacted sand fill $6\mathrm{ft}$ in depth has a relative density of $40\%$. Laboratory tests indicated that the minimum and maximum void ratios of the sand are 0.46 and 0.90 , respectively. The specific gravity of solids of the sand is 2.65 . a. What is the dry unit weight of the sand? b. If the sand is compacted to a relative density of $75\%$, what is the decrease in thickness of the 6-ft fill?