The highway drainage requirement don’t include __________

The longitudinal drain may be provided if the cross slope is more than ______

The water that cannot be drained of by gravity is called _______

The discharge in m3/sec for a surface drainage of 100 m2 and a velocity of 5 m/second is?

The total time for inlet flow and flow along the drain is given by ______

The design aspects of the surface drainage system are classified into how many types?

The desirable velocity for sand and silt are ______

To fulfill the adequate permeability the D15 of filter/D15 of foundation ratio should be greater than ______