Roughness Coefficient while Running Full given Proportionate Velocity Calculator

✖Proportionate velocity is ratio of velocity when water is partially full to velocity when water is totally full.ⓘ Proportionate velocity [P_v]			+10% -10%
✖Roughness coefficient partially full means roughness coefficient of pipe while running partially full.ⓘ Roughness coefficient partially full [n]			+10% -10%
✖Hydraulic mean depth while running partially full.ⓘ Hydraulic mean depth [r]			+10% -10%
✖Hydraulic mean depth while running full means hmd of pipe while running full.ⓘ Hydraulic mean depth while running full [R]			+10% -10%

✖Roughness coefficient full means roughness coefficient of pipe while running full.ⓘ Roughness Coefficient while Running Full given Proportionate Velocity [N]

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Formula

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Roughness Coefficient while Running Full given Proportionate Velocity

Formula

`"N" = ("P"_{"v"}*"n")/("r"/"R")^(2/3)`

Example

`"0.759089"=("0.6"*"0.9")/("3m"/"5m")^(2/3)`

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Roughness Coefficient while Running Full given Proportionate Velocity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Roughness coefficient full = (Proportionate velocity*Roughness coefficient partially full)/(Hydraulic mean depth/Hydraulic mean depth while running full)^(2/3)
N = (P_v*n)/(r/R)^(2/3)
This formula uses 5 Variables

Variables Used

Roughness coefficient full - Roughness coefficient full means roughness coefficient of pipe while running full.
Proportionate velocity - Proportionate velocity is ratio of velocity when water is partially full to velocity when water is totally full.
Roughness coefficient partially full - Roughness coefficient partially full means roughness coefficient of pipe while running partially full.
Hydraulic mean depth - (Measured in Meter) - Hydraulic mean depth while running partially full.
Hydraulic mean depth while running full - (Measured in Meter) - Hydraulic mean depth while running full means hmd of pipe while running full.

STEP 1: Convert Input(s) to Base Unit

Proportionate velocity: 0.6 --> No Conversion Required
Roughness coefficient partially full: 0.9 --> No Conversion Required
Hydraulic mean depth: 3 Meter --> 3 Meter No Conversion Required
Hydraulic mean depth while running full: 5 Meter --> 5 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

N = (P_v*n)/(r/R)^(2/3) --> (0.6*0.9)/(3/5)^(2/3)

Evaluating ... ...

N = 0.759089398771574

STEP 3: Convert Result to Output's Unit

0.759089398771574 --> No Conversion Required

FINAL ANSWER

0.759089398771574 ≈ 0.759089 <-- Roughness coefficient full

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Environmental Engineering » Hydraulic Designs of Sewers and S. W. Drain Sections » Hydraulic Characteristics of Circular Sewers Sections » Circular Sewer Section Running Full » Proportionate Velocity » Roughness Coefficient while Running Full given Proportionate Velocity

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

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< 7 Proportionate Velocity Calculators

Roughness Coefficient while Running Full given Proportionate Velocity

Go Roughness coefficient full = (Proportionate velocity*Roughness coefficient partially full)/(Hydraulic mean depth/Hydraulic mean depth while running full)^(2/3)

Proportionate Velocity given Roughness Coefficient

Go Proportionate velocity = (Roughness coefficient full/Roughness coefficient partially full)*(Hydraulic mean depth/Hydraulic mean depth)^(2/3)

Proportionate Velocity given Central Angle

Go Proportionate velocity = (1-((360*pi/180)*sin(Central Angle))/(2*pi*Central Angle))^(2/3)

Hydraulic Mean Depth while Running Full given Proportionate Velocity

Go Hydraulic mean depth while running full = ((Hydraulic mean depth)^(2/3)/Proportionate velocity)^(3/2)

Proportionate Velocity when Roughness Coefficient does not Vary with Depth

Go Proportionate velocity = (Hydraulic mean depth/Hydraulic mean depth while running full)^(2/3)

Proportionate Velocity given Velocity while Running Partially Full

Go Proportionate velocity = Velocity while running partially full/Velocity while running full

Velocity while Running Full given Proportionate Velocity

Go Velocity while running full = Velocity while running partially full/Proportionate velocity

Roughness Coefficient while Running Full given Proportionate Velocity Formula

Roughness coefficient full = (Proportionate velocity*Roughness coefficient partially full)/(Hydraulic mean depth/Hydraulic mean depth while running full)^(2/3)
N = (P_v*n)/(r/R)^(2/3)

What is hydraulic depth ?

Hydraulic depth, abbreviated as dh, also called hydraulic mean depth, is the area cross-section of water in a pipe or channel divided by the wetting perimeter.

How to Calculate Roughness Coefficient while Running Full given Proportionate Velocity?

Roughness Coefficient while Running Full given Proportionate Velocity calculator uses Roughness coefficient full = (Proportionate velocity*Roughness coefficient partially full)/(Hydraulic mean depth/Hydraulic mean depth while running full)^(2/3) to calculate the Roughness coefficient full, The Roughness Coefficient while Running Full given Proportionate Velocity calculates the roughness coefficient when we have prior information of other parameters. Roughness coefficient full is denoted by N symbol.

How to calculate Roughness Coefficient while Running Full given Proportionate Velocity using this online calculator? To use this online calculator for Roughness Coefficient while Running Full given Proportionate Velocity, enter Proportionate velocity (P_v), Roughness coefficient partially full (n), Hydraulic mean depth (r) & Hydraulic mean depth while running full (R) and hit the calculate button. Here is how the Roughness Coefficient while Running Full given Proportionate Velocity calculation can be explained with given input values -> 0.759089 = (0.6*0.9)/(3/5)^(2/3).

FAQ

What is Roughness Coefficient while Running Full given Proportionate Velocity?

The Roughness Coefficient while Running Full given Proportionate Velocity calculates the roughness coefficient when we have prior information of other parameters and is represented as N = (P_v*n)/(r/R)^(2/3) or Roughness coefficient full = (Proportionate velocity*Roughness coefficient partially full)/(Hydraulic mean depth/Hydraulic mean depth while running full)^(2/3). Proportionate velocity is ratio of velocity when water is partially full to velocity when water is totally full, Roughness coefficient partially full means roughness coefficient of pipe while running partially full, Hydraulic mean depth while running partially full & Hydraulic mean depth while running full means hmd of pipe while running full.

How to calculate Roughness Coefficient while Running Full given Proportionate Velocity?

The Roughness Coefficient while Running Full given Proportionate Velocity calculates the roughness coefficient when we have prior information of other parameters is calculated using Roughness coefficient full = (Proportionate velocity*Roughness coefficient partially full)/(Hydraulic mean depth/Hydraulic mean depth while running full)^(2/3). To calculate Roughness Coefficient while Running Full given Proportionate Velocity, you need Proportionate velocity (P_v), Roughness coefficient partially full (n), Hydraulic mean depth (r) & Hydraulic mean depth while running full (R). With our tool, you need to enter the respective value for Proportionate velocity, Roughness coefficient partially full, Hydraulic mean depth & Hydraulic mean depth while running full and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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