Question

88. If the foundation soil is relatively less
permeable and width of pavement is also wider
then to lower the ground water table, the type
of sub-surface drainage to be adopted

a) Longitudinal drain pipes filled with filter
material
b) In addition to longitudinal drain pipes,
transverse drain filled with filter material
c) Capillary cut-off system
d) Control of seepage flow system​

Answer 1

Answer:

ANSWER IS B

Explanation:

BECAUSE IN THE ADDITIONAL PIPE IS CAN EASILY MOVE AND IT GETS MORE VOLUME