1. Consider a gated-controlled overflow spillway with a length of 30 ft and designed for a head of8 ft. The gate seats on the crest with 0= 90°. The upstream face of the crest is vertical with thecrest elevation at 1000 ft and the elevation of the streambed is 980 ft. Determine the dischargefor net gate openings of 2 ft and 3 ft at the design head.2. Compute the time of flow in a gutter for the situation in which the spread T1 at the upstreamend is 1 ft, which results from the bypass flow from the upstream inlet. The design spread T2 atthe second inlet is 5 ft, the gutter slope is S=0.03, and the cross slope is Sx = 0.025. Manning'sn=0.016 and the inlet spacing is 200 ft.3. Compute the flow rate in a gutter section with a design spread of 3 m and cross-slope ofSx=0.025. The gutter slope S=0.01 and Manning's n is 0.016.WB

Given, L = 30 ft H = 8 ft θ = 90o 2ft x 3 ft gate NOTE : As per guidelines, first question is…

Answered: 1. Consider a gated-controlled overflow…

1. Consider a gated-controlled overflow spillway 8 ft. The gate seats on the crest with 0= 90°. T crest elevation at 1000 ft and the elevation of for net gate openings of 2 ft and 3 ft at the des

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

Open Channel Flow

Open channel flow is a branch of fluid mechanics. It deals with the flow of fluid in an open conduit or free surface. In an open channel flow, gravity induces the flow of water whose surface is open to the air. This flow is free-falling rather than confined in rigid body conduits. The open channel flow depends upon two parameters that are the cross-section of the conduit and the velocity profile. Practical examples of open channel flow are streams, rivers, canals, and other drainage systems.In open channel flow, the cross-sectional area of at least one of the sides is exposed to air, and the surface of water faces atmospheric pressure. This flow is also known as free gravity flow. The cross-sectional area of the conduit can be either man-made or a natural channel. For instance, the flow in rivers and streams are natural conduits, and the flow in a canal and sanitary systems are man-made or engineered channels.

Question

1. Consider a gated-controlled overflow spillway with a length of 30 ft and designed for a head of
8 ft. The gate seats on the crest with 0= 90°. The upstream face of the crest is vertical with the
crest elevation at 1000 ft and the elevation of the streambed is 980 ft. Determine the discharge
for net gate openings of 2 ft and 3 ft at the design head.
2. Compute the time of flow in a gutter for the situation in which the spread T1 at the upstream
end is 1 ft, which results from the bypass flow from the upstream inlet. The design spread T2 at
the second inlet is 5 ft, the gutter slope is S=0.03, and the cross slope is Sx = 0.025. Manning's
n=0.016 and the inlet spacing is 200 ft.
3. Compute the flow rate in a gutter section with a design spread of 3 m and cross-slope of
Sx=0.025. The gutter slope S=0.01 and Manning's n is 0.016.
W
B

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