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Manning's Coefficient using Strickler Formula Formula

GoManning's Formula for Coefficient of Roughness given Average Velocity Formula

GoManning's Formula for Roughness Coefficient given Chezy's Constant Formula

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Manning’s Roughness Coefficient represents the roughness or friction applied to the flow by the channel. Check FAQs

n = \frac{{R a}^{\frac{1}{6}}}{21}

n - Manning’s Roughness Coefficient?R_a - Roughness Value?

Manning's Coefficient using Strickler Formula Example

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Here is how the Manning's Coefficient using Strickler Formula equation looks like with Values.

Here is how the Manning's Coefficient using Strickler Formula equation looks like with Units.

Here is how the Manning's Coefficient using Strickler Formula equation looks like.

0.0048 = \frac{{0.001}^{\frac{1}{6}}}{21}

0.0048 = \frac{{0.001mm}^{\frac{1}{6}}}{21}

0.0048 = \frac{{0.001}^{\frac{1}{6}}}{21}

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Manning's Coefficient using Strickler Formula Solution

Follow our step by step solution on how to calculate Manning's Coefficient using Strickler Formula?

FIRST Step Consider the formula

n = \frac{{R a}^{\frac{1}{6}}}{21}

Next Step Substitute values of Variables

∴

n = \frac{{0.001mm}^{\frac{1}{6}}}{21}

Next Step Convert Units

∴

n = \frac{{1E-6m}^{\frac{1}{6}}}{21}

Next Step Prepare to Evaluate

∴

n = \frac{{1E-6}^{\frac{1}{6}}}{21}

Next Step Evaluate

∴

n = 0.00476190476190476

LAST Step Rounding Answer

∴

n = 0.0048

Manning's Coefficient using Strickler Formula Formula Elements

Variables

Manning’s Roughness Coefficient

Manning’s Roughness Coefficient represents the roughness or friction applied to the flow by the channel.

Symbol: n

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Manning’s Roughness Coefficient

Roughness Value

Roughness Value is the arithmetic average of the absolute values of the roughness profile ordinates.

Symbol: R_a

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Roughness Value

Credits

Created by Rithik Agrawal

National Institute of Technology Karnataka (NITK), Surathkal

Rithik Agrawal has created this Formula and 1300+ more formulas!

Verified by M Naveen

National Institute of Technology (NIT), Warangal

M Naveen has verified this Formula and 900+ more formulas!

Other Formulas to find Manning’s Roughness Coefficient

Go Manning's Formula for Coefficient of Roughness given Average Velocity

n = (\frac{1}{V avg(U)}) \cdot (S^{\frac{1}{2}}) \cdot ({R H}^{\frac{2}{3}})

Go Manning's Formula for Roughness Coefficient given Chezy's Constant

n = (\frac{1}{C}) \cdot {D Hydraulic}^{\frac{1}{6}}

Other formulas in Manning's Formula in Uniform Flow category

Go Manning's Formula for Average Velocity

V avg(U) = (\frac{1}{n}) \cdot ({R H}^{\frac{2}{3}}) \cdot (S^{\frac{1}{2}})

Go Manning's Formula for Hydraulic Radius given Average Velocity

R H = {(V avg(U) \cdot \frac{n}{\sqrt{S}})}^{\frac{3}{2}}

Go Manning's Formula for Slope of Channel Bed given Average Velocity

S = {(V avg(U) \cdot \frac{n}{{R H}^{\frac{2}{3}}})}^{2}

Go Manning's Formula for Hydraulic Radius given Chezy's Constant

R H = (\frac{1}{S}) \cdot {(\frac{V avg}{C})}^{2}

How to Evaluate Manning's Coefficient using Strickler Formula?

Manning's Coefficient using Strickler Formula evaluator uses Manning’s Roughness Coefficient = (Roughness Value^(1/6))/21 to evaluate the Manning’s Roughness Coefficient, The Manning's Coefficient using Strickler Formula is defined as the roughness constant used in Manning's formulas. Manning’s Roughness Coefficient is denoted by n symbol.

How to evaluate Manning's Coefficient using Strickler Formula using this online evaluator? To use this online evaluator for Manning's Coefficient using Strickler Formula, enter Roughness Value (R_a) and hit the calculate button.

FAQs on Manning's Coefficient using Strickler Formula

What is the formula to find Manning's Coefficient using Strickler Formula?

The formula of Manning's Coefficient using Strickler Formula is expressed as Manning’s Roughness Coefficient = (Roughness Value^(1/6))/21. Here is an example- 0.004762 = (1E-06^(1/6))/21.

How to calculate Manning's Coefficient using Strickler Formula?

With Roughness Value (R_a) we can find Manning's Coefficient using Strickler Formula using the formula - Manning’s Roughness Coefficient = (Roughness Value^(1/6))/21.

What are the other ways to Calculate Manning’s Roughness Coefficient?

Here are the different ways to Calculate Manning’s Roughness Coefficient-

Manning’s Roughness Coefficient=(1/Average Velocity of Uniform Flow)*(Bed Slope^(1/2))*(Hydraulic Radius of Channel^(2/3))
Manning’s Roughness Coefficient=(1/Chezy's Constant)*Hydraulic Depth^(1/6)

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