Answered: E(y + Ay) – E(y) (So – Savg) V? Δx Δ-…

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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Question

A clean-earth river is 50 ft wide and averages 600 ft³/s. It
contains a dam that increases the water depth to 8 ft, to
provide head for a hydropower plant. The bed slope is
0.0025. (a) What is the normal depth of this river?
(b) Engineers propose putting flashboards on the dam to
raise the water level to 10 ft. Residents a half-mile
upstream are worried about flooding above their present
water depth of about 2.2 ft. Using Eq. (10.52) in one big
half-mile step, estimate the new water depth upstream.

E(y + Ay) – E(y)
(So – Savg)
V?
Δx
Δ-
where E = y +
2g

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