Civil Engineering MCQAE Level Civil Engineering
Garret diagrams (Garret tables for irrigation design) are used to determine:
Irrigation EngineeringGarret DiagramsMEDIUM
Choose the correct answer
A
Canal discharge from rainfall data
B
Trapezoidal section dimensions for canals designed on Kennedy theory
C
Tube well yield
D
Crop water requirements
Correct Answer
B. Trapezoidal section dimensions for canals designed on Kennedy theory
Why is this the answer?
Garret diagrams / tables give trapezoidal canal section dimensions (top width, bottom width, depth, side slopes, velocity) designed using Kennedy theory and Manning equation, for given discharge and silt factor. They save iterative design calculations.
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