a. A rectangular channel is 4 m wide and has alongitudinal slope of 0.002. The channel is pouredconcrete and it is discharging a uniform flow at 25m3/s. What is the normal depth? Use Table C-4 forthe roughness coefficient.Table C-4. Average Manning Roughness Coefficients for Larger Open ChannelsChannelManning Roughness Coefficient(n)Unlined ChannelsClay LoamSandLined ChannelsGrass Lined (well maintained)Grass Lined (not maintained)Wetland-Bottom Channels (NewChannel)0.0230.0200.0350.0450.023Wetland-Bottom Channels (MatureChannel)See Table A-5Riprap-Lined ChannelsSee Chapter 7, Section 7.6.17Concrete (Poured)0.014Air Blown Mortar (Gunite or Shotcrete)(¹) 0.016Asphaltic Concrete orBituminous Plant Mix0.018(¹) For air blown concrete, use n=0.012 (if troweled) and n=0.025 if purposely roughened.Note: For channels with revetments or multiple lining types, use composite Manning roughness coefficientbased on component lining materials.

Given Data : Width of rectangular channel = 4m longitudinal slope = 0.002 discharge = 25 m3/s Table…

Answered: a. A rectangular channel is 4 m wide…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

4.Hydraulic jump occurs in a 4 m wide rectangular channel. Discharge in channel 7.5 m^3 /s, hydraulic jump upstream depth 0.2 m. Determine :Froude numbers upstream and downstream.
Read the question carefully and give me both a&b right solutions. A 1.3-m wide rectangular channel with a bed slope of 0.00019 has a depth of flow of 0.8m. Manning’s roughness coefficient is 0.017. (a) Can Manning’s equation be applied to this system (i.e., is the flow fully turbulent)? (b) Regardless of the answer to part a, determine the steady uniform discharge in the channel.
A rectangular channel carries a discharge of 45 m/s. The median particle diameter of the suspended load is 2.8 mm. Use channel conveyance factor of 600 and u = 1.14 104). Determine the following: a) Chezy's Coefficient and D-W friction factor b) Bed slope (S.) required to be provided c) Critical flows: depth, velocity, slope and specific energy d) Normal flows: width, depth and mean velocity e) Reynolds number and Froude number and state their status f) Maximum specific discharge and critical slope g) Comment on the applicability of Manning's Equation
Water Resources Engineering: Open Channel Flow A 3.7 meter wide rectangular channel with with a bed slope of 0.00019 and a depth of flow of 2.2 meters. Manning's roughness coefficient is 0.019. Find: a) Can Manning's equation be applied to this system (i.e. Is the flow fully turbulent)? b) Regardless to the answer to part a, determine the steady uniform discharge in the channel (i.e. the "normal depth")
1. Darcy law represents.. .a) v = ki, (b) v = k/i, (c) i = vk (v=velocity, k = hydraulic conductivity) 2. Cone of depression is observed in: a) Confined aquifer b) Un-confined aquifer c) Both a and b 3. Critical flow in an open channel occurs, when Froude number is....(a) less than 1, (b) more than 1, (c) depends on the rainfall, (d) none of these. 4. Manning's formula is used for calculating......(a) aquifer flow, (b) velocity in channel, (c) peak flow, (d) critical depth
I An unlined canal under regime conditions along with a silt factor of 1 has a width o flow 71.25 m. Assuming the unlined canal as a wide channel, the corresponding averag depth of flow (in m, round off to two decimal places) in the canal will be D=7 B = 71.25 m
. Refer to the following channel cross section. Normal depth is 3.0 feet. (a) What is the cross-sectional area of flow? (b) What is the wetted perimeter? (c) What is the hydraulic radius? 3.0' 1.5' 1.5' 8) noio222013 (6) -5.0'- JadW (d) O Cengage Learning 2014
Q- The wetted perimeter and cross-sectional area of a channel is 5 m and 9 sq. m respectively. What ois the hydraulic radius of the channel?
Water fl ows in a brickwork rectangular channel 2 m wide,on a slope of 5 m/km. (a) Find the fl ow rate when thenormal depth is 50 cm. (b) If the normal depth remains50 cm, fi nd the channel width which will triple the fl owrate. Comment on this result.
5) According to Lacey's theory, the silt- carrying capacity of a channel varies as (5/2) power of the critical velocity. * O False True
A concrete-lined trapezoidal channel has to be constructed to carry a discharge of 500 cfs. Design the channel. Assume that the following values were fixed based on the site conditions: • Bed slope = 0.002 • n = 0.015 • Side slope, z = 1 (vertical):1.5 (horizontal) • b/y ratio = 2.0
cross-sectional area of the channel. 5. Refer to the following channel cross section. Normal depth is 1.50 feet. (a) What is the cross-sectional area of flow? (b) What is the wetted perimeter? (c) What is the hydraulic radius? -8.5'- 1.50' -2.5' 2.5'- -4.5'- 00ation ntion Normal denth is 3 0 fee O Cengage Learning 2014

SEE MORE QUESTIONS

Recommended textbooks for you

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Fundamentals of Structural Analysis

Civil Engineering

ISBN:

9780073398006

Author:

Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning

Publisher:

McGraw-Hill Education

Sustainable Energy

Civil Engineering

ISBN:

9781337551663

Author:

DUNLAP, Richard A.

Publisher:

Cengage,

Traffic and Highway Engineering

Civil Engineering

ISBN:

9781305156241

Author:

Garber, Nicholas J.

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

a. A rectangular channel is 4 m wide and has a longitudinal slope of 0.002. The channel is poured concrete and it is discharging a uniform flow at 25 m3/s. What is the normal depth? Use Table C-4 for the roughness coefficient.