Discussion
As per IRC52 : 2019, the maximum camber that should be provided on earth road is :-
Answer: B
The maximum camber for an earth road is 1 in 25.
Camber depends on the surface and the rainfall: the more pervious and rough the surface, the steeper the camber needed to shed water. IRC recommends 3 to 4 percent for earth roads, the steepest of all surfaces, so the maximum is 4 percent, or 1 in 25.
1 in 40 (2.5 percent) suits a paved or gravel surface, and 1 in 20 (5 percent) and 1 in 16.7 (6 percent) are steeper than the recommended range and would cause erosion of the road surface.
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