Question

For medium silt whose average grain size is 0.16 mm, Lacey's silt factor is likely to be

• A. 0.30
• B. 0.45
• C. 0.70
• D. 1.32

Answer 1

The correct option is C 0.70

$\text{Lacey's silt factor,}f=1.76\sqrt{d_m}$

$=1.76\times \sqrt{0.16}=0.704$