Water flows over a spillway of a dam from a depth of 8 m upstream the spillway to a depth of 1.5 m downstream. The head lost may be assumed to be o.3 times the velocity head downstream. Considering 1 m width of waterway, determine (a)The amount of flow in m³/s. (b) The power lost in kW.

Water flows over a spillway of a dam from a depth of 8 m upstream the spillway to a depth of 1.5 m downstream. The head lost may be assumed to be o.3 times the velocity head downstream. Considering 1 m width of waterway, determine (a)The amount of flow in m³/s. (b) The power lost in kW.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Spillway design

A spillway is the overflow portion of the dam that carries the surplus discharge flow from the reservoir to the downstream, that is, it carries the flood water safely downstream, which is enough to be stored in that reservoir. Therefore, it acts as a safety valve for the dam because many failures of the dam arise due to the incorrect design of the spillway.

Question

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Water flows over a spillway of a dam from a depth of 8 m
upstream the spillway to a depth of 1.5 m downstream. The
head lost may be assumed to be o.3 times the velocity head
downstream. Considering 1 m width of waterway, determine
(a)The amount of flow in m3/s.
(b) The power lost in kW.

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