Question:easy

In which layout subsurface drains enter the main drain at an angle ?

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Remember:
- Grid/Parallel system = Laterals enter at $90^\circ$ (right angles).
- Herringbone system = Laterals enter at an acute angle.
Updated On: Jul 24, 2026
  • Parallel system
  • Double main system
  • Random system
  • Herringbone system
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The Correct Option is D

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