Soil and Water Erosion - Soil and Water Conservation Engineering - Agricultural Engineering Previous Year Questions

The following design parameters of contour bunds constructed on a land of 4% slope are given: V.I. = 1.2 m, base width = 2.5 m, top width = 0.5 m, height = 1.0 m. Assuming the length for side and lateral bunds as 30% of the length of contour bunds, the land area lost due to bunding is

If W is the width of a bench terrace constructed on a land of slope S, then the drop (D) between two consecutive bench terraces for a riser slope of ½ : 1 is given by

A 16 m high wind break is constructed to protect soil from wind erosion due to wind velocity of 18 \(\text{m s}^{-1}\) at 15 m height. The minimum wind velocity at 15 m height capable of moving the soil fraction is \(8 \text{ m s}^{-1}\). The angle of deviation of prevailing wind direction from the perpendicular to the wind break is \(30^{\circ}\). The distance of full protection from the wind break in m is

Bench terraces are planned on 15% hill slope. The vertical interval is 2.5 m, and the riser has a slope of 1:1. The earthwork in cutting is equal to the earthwork in filling. The volume of earthwork per hectare (in m³·ha⁻¹) is _____. (Rounded off to the nearest integer)