The loss of water from leaves present on embankment is called ______

The span of RCC slab is limited to ______

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

The area of the drainage is expressed in ______

The removal and diversion of surface water from the roadway is called _______

If the canal and drain at same level then the cross drainage structure is called ______

The number of important factors for highway engineer are _______

The process of removing and controlling excess surface and sub soil water within roadway is _______