(a) Estimate the coefficient of permeability for a uniform sand where a sieve analysis indicates that the D 10 size is 0.15 mm (by Hazen formula, Eq. 11a). (b) The particle-size distribution curve for...

(a) Estimate the coefficient of permeability for a uniform sand where a sieve analysis indicates that the D₁₀
size is 0.15 mm (by Hazen formula, Eq. 11a).

(b) The particle-size distribution curve for a sand indicates that the D₁₅
size is 0.19 mm. If the sand deposit is in the dense or compact state, estimate the coefficient of permeability.

(c) Apply Kozeny-Carman equation (Equation 10c), using both the D₁₀
and D₁₅
sizes, to compare calculated values with those values obtained for (a) and (b). Use the answer for (a) and Figure 10(b) to estimate a value for e.