Manning's equation is Q = where Cm AR 2/3 1/2 n Q = Cm = = flow (m³/s) 1.49 USC system 1.00 SI system roughness factor for various boundary conditions area (m2) hydraulic radius (m) n = A = R == = S = slope of EGL (or HGL for steady uniform flow conditions) m/m area/wetted perimeter Transform the above equation to solve for pipe diameter (mm) expressed in terms of flow (L/s), pipe slope (%) and pipe roughness "n". The value of Cm 1s 1.00 for a metric equation. Express your answer in the simplest form mathematically. Check by assuming arbitrary values and comparing the results between the original equation and the transformed equation.
Manning's equation is Q = where Cm AR 2/3 1/2 n Q = Cm = = flow (m³/s) 1.49 USC system 1.00 SI system roughness factor for various boundary conditions area (m2) hydraulic radius (m) n = A = R == = S = slope of EGL (or HGL for steady uniform flow conditions) m/m area/wetted perimeter Transform the above equation to solve for pipe diameter (mm) expressed in terms of flow (L/s), pipe slope (%) and pipe roughness "n". The value of Cm 1s 1.00 for a metric equation. Express your answer in the simplest form mathematically. Check by assuming arbitrary values and comparing the results between the original equation and the transformed equation.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Manning's equation is Q =
where
Cm
AR 2/3 1/2
n
Q =
Cm =
=
flow (m³/s)
1.49 USC system
1.00 SI system
roughness factor for various boundary conditions
area (m2)
hydraulic radius (m)
n
=
A
=
R
==
=
S
=
slope of EGL (or HGL for steady uniform flow conditions) m/m
area/wetted perimeter
Transform the above equation to solve for pipe diameter (mm) expressed in terms of flow (L/s),
pipe slope (%) and pipe roughness "n". The value of Cm 1s 1.00 for a metric equation. Express
your answer in the simplest form mathematically. Check by assuming arbitrary values and
comparing the results between the original equation and the transformed equation.
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