Section 4: Soil and Water Conservation Engineering
Soil and Water Erosion
Subtopic: Terraces and bunds
Question Statement:
If W is the width of a bench terrace constructed on a land of slope S, then the drop
Options:
(A) D = WS/(100−S)
(B) D = WS/(200−S)
(C) D = 2WS/(200−S)
(D) D = 2WS/(100−S)
Official Answer Key:
D
Step-by-Step Solution & Explanation
Standard bench-terracing geometry relation for vertical drop between terraces with a riser (batter) slope of ½:1 (i.e. riser rises 2 units vertically for every 1 unit horizontal, per standard convention adopted in the derivation): D = 2WS/(100−S), where S is expressed in percent and W is the horizontal bench width.
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