HW1 // A stepped rectangular weir has the upper step 1m wide and 0.3m deep and the lower step 0.6m wide and 0.5m deep. Calculate the discharge when the water level just touches the top edge of the weir. cd= 0.6 HW2 // What is the equation for the compound weir below? HW3 // Water flows at a rate of 5 m3/sec in a rectangular channel of width 10m. the normal depth of flow in channel is Sm. if a sharp-crest weir of height 5m is installed across the channel, determine the new flow depth in the channel for the same flowrate? cd = 0.6 HW4 // A rectangular weir with 1.6 m width. How high should it be placed in a channel to maintain an upstream depth of 2.35 m for 0.4 m3/sec flow? 0.65 cd = (1+4

HW1 // A stepped rectangular weir has the upper step 1m wide and 0.3m deep and the lower step 0.6m wide and 0.5m deep. Calculate the discharge when the water level just touches the top edge of the weir. cd= 0.6 HW2 // What is the equation for the compound weir below? HW3 // Water flows at a rate of 5 m3/sec in a rectangular channel of width 10m. the normal depth of flow in channel is Sm. if a sharp-crest weir of height 5m is installed across the channel, determine the new flow depth in the channel for the same flowrate? cd = 0.6 HW4 // A rectangular weir with 1.6 m width. How high should it be placed in a channel to maintain an upstream depth of 2.35 m for 0.4 m3/sec flow? 0.65 cd = (1+4

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

HW1 // A stepped rectangular weir has the upper step 1m wide and 0.3m deep and the lower
step 0.6m wide and 0.5m deep. Calculate the discharge when the water level just touches the
top edge of the weir. cd= 0.6
HW2 // What is the equation for the compound weir below?
HW3 // Water flows at a rate of 5 m3/sec in a rectangular channel of width 10m. the normal
depth of flow in channel is 5m. if a sharp-crest weir of height 5m is installed across the channel,
determine the new flow depth in the channel for the same flowrate? cd = 0.6
HW4 // A rectangular weir with 1.6 m width. How high should it be placed in a channel to
maintain an upstream depth of 2.35 m for 0.4 m3/sec flow?
0.65
cd =
(1+4)

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