Section 4: Soil and Water Conservation Engineering
Soil and Water Erosion
Subtopic: Terraces and bunds
Question Statement:
If the width of bench terrace is W, drop D and existing land slope S; then for 150% batter slope, the drop D will be
Options:
(A) WS/100
(B) WS/
(C) 2WS/
(D) 3WS/
Official Answer Key:
D
Step-by-Step Solution & Explanation
For a bench terrace with a batter (side-slope) of 150% (i.e. a batter slope ratio of 1.5:1, expressed as 150 units horizontal per 100 vertical, or equivalently a factor of 1.5), balancing cut-and-fill earthwork across terrace width W with existing land slope S gives the standard design relation D = 3WS/(300−2S), the form matching the derivation for a 1½:1 batter → option (D). This is a standard bench-terracing design formula recall/derivation; options (A)-(C) correspond to different (0%, 100%, 200%) batter-slope assumptions.
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.