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The spillway gate which when lowered cannot be seen from a distance is of the type ______________________

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in Irrigation Engineering by (75.2k points)
The spillway gate which when lowered cannot be seen from a distance is of the type ______________________

(a) Sliding gate

(b) Roller gate

(c) Tainter gate

(d) USBR drum gate

I had been asked this question in an international level competition.

My enquiry is from Types of Spillway Gates in portion Spillways, Energy Dissipators and Spillway Gates of Irrigation Engineering

1 Answer

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by (106k points)
The correct option is (d) USBR drum gate

To explain: The system of drum gates consists of a segment of a cylinder which may be raised or lowered into the recess made into the top of the spillway. Whenever the drum is lowered, the surface becomes coincident with the designed ogee shape of the crest.

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