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The top-level of a tank weir in a tank bund...

The top-level of a tank weir in a tank bund scheme is kept at ________

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asked Nov 9, 2023 in Irrigation Engineering by Carter (75.2k points)

The top-level of a tank weir in a tank bund scheme is kept at ________

(a) Maximum Water Level (M.W.L)

(b) Full Tank Level (F.T.L)

(c) Either M.W.L or F.T.L

(d) Full Supply Level

This question was addressed to me in my homework.

My question is taken from Tank Irrigation in section River Navigation & Tank Irrigation of Irrigation Engineering

irrigation engineering
river navigation & tank irrigation
tank irrigation

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1 Answer

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answered Nov 16, 2023 by Greg (106k points)

The correct option is (b) Full Tank Level (F.T.L)

Easy explanation: The top-level i.e. crest level of the tank weir is kept at F.T.L. The extra water is discharged over the surplus escape weir when the tank is full up to F.T.L. The design of the length or capacity of this surplus escape weir is such that the water level in the tank never exceeds the M.W.L.

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