engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Highway Engineering Pavement Design
For roads the permeability criteria for subsurface drainage shall be
1
\(\frac{{{D_{15}}\;of\;filter}}{{{D_{15}}\;of\;foundation}} > 5\)
2
\(\frac{{{D_{15}}\;of\;filter}}{{{D_{15}}\;of\;foundation}} < 5\)
3
\(\frac{{{D_{15}}\;of\;filter}}{{{D_{10}}\;of\;foundation}} < 5\)
4
\(\frac{{{D_{15}}\;of\;filter}}{{{D_{10}}\;of\;foundation}} > 5\)
5
\(\frac{{{D_{10}}\;of\;filter}}{{{D_{10}}\;of\;foundation}} > 5\)