The gradients of trace cuts for hilly roads, are kept
(A) Equal to ruling gradient
(B) 10 to 20 per cent easier than ruling gradients
(C) 10 to 20 per cent steeper than ruling gradients
(D) None of these
(A) Equal to ruling gradient
(B) 10 to 20 per cent easier than ruling gradients
(C) 10 to 20 per cent steeper than ruling gradients
(D) None of these