Practice mode Water Management

In Lacey’s wetted perimeter formula used for a weir waterway, P = ____ (Q)1/2. What is the constant?

Correct answer A. 4.75

Explanation

Lacey's regime theory gives the wetted perimeter of a stable alluvial channel as P = 4.75 times the square root of discharge in cubic metres per second.

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In Lacey’s wetted perimeter formula used for a weir waterway, P = ____ (Q)1/2. What is the constant?

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In Lacey’s wetted perimeter formula used for a weir waterway, P = ____ (Q)1/2. What is the constant?

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