Head for Broad Crested Weir Calculator

✖Total Head is the combination of weir crested and additional head.ⓘ Total Head [H]			+10% -10%
✖Additional Head is the applied head due to the velocity of approach.ⓘ Additional Head [h_a]			+10% -10%

✖Head on Upstream of Weirr pertains to the energy status of water in water flow systems and is useful for describing flow in hydraulic structures.ⓘ Head for Broad Crested Weir [H_Upstream]

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Formula

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Head for Broad Crested Weir

Formula

H Upstream = (H + h a)

Example

10.01 m = (5 m + 5.01 m)

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Head for Broad Crested Weir Solution

STEP 0: Pre-Calculation Summary

Formula Used

Head on Upstream of Weir = (Total Head+Additional Head)
H_Upstream = (H+h_a)
This formula uses 3 Variables

Variables Used

Head on Upstream of Weir - (Measured in Meter) - Head on Upstream of Weirr pertains to the energy status of water in water flow systems and is useful for describing flow in hydraulic structures.
Total Head - (Measured in Meter) - Total Head is the combination of weir crested and additional head.
Additional Head - (Measured in Meter) - Additional Head is the applied head due to the velocity of approach.

STEP 1: Convert Input(s) to Base Unit

Total Head: 5 Meter --> 5 Meter No Conversion Required
Additional Head: 5.01 Meter --> 5.01 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

H_Upstream = (H+h_a) --> (5+5.01)

Evaluating ... ...

H_Upstream = 10.01

STEP 3: Convert Result to Output's Unit

10.01 Meter --> No Conversion Required

FINAL ANSWER

10.01 Meter <-- Head on Upstream of Weir

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Hydraulics and Waterworks » Flow Over Notches and Weirs » Broad Crested Weir » Head for Broad Crested Weir

Credits

Created by M Naveen

National Institute of Technology (NIT), Warangal

M Naveen has created this Calculator and 500+ more calculators!

Verified by Rithik Agrawal

National Institute of Technology Karnataka (NITK), Surathkal

Rithik Agrawal has verified this Calculator and 400+ more calculators!

< Broad Crested Weir Calculators

Discharge over Broad Crested Weir

Go Discharge Over Broad Crested Weir = Length of Weir Crest*Critical Depth of Weir*sqrt((2*[g])*(Total Head-Critical Depth of Weir))

Velocity of Flow given Head

Go Velocity of Fluid for Weir = sqrt((2*Acceleration due to Gravity)*(Total Head-Critical Depth of Weir))

Critical Depth due to Reduction in Area of Flow Section given Total Head

Go Critical Depth of Weir = Total Head-(Velocity of Fluid for Weir^2/(2*Acceleration due to Gravity))

Total Head above Weir Crest

Go Total Head = Critical Depth of Weir+(Velocity of Fluid for Weir^2/(2*Acceleration due to Gravity))

Head for Broad Crested Weir Formula

Head on Upstream of Weir = (Total Head+Additional Head)
H_Upstream = (H+h_a)

What does Head for Broad Crested Weir?

Head for Broad Crested Weir is defined as the combination of broad crested weir head and the additional head.

What does Additional Head mean?

In hydraulics additional head is defined as the measurement of additional height of water flowing in a broad crested weir.

How to Calculate Head for Broad Crested Weir?

Head for Broad Crested Weir calculator uses Head on Upstream of Weir = (Total Head+Additional Head) to calculate the Head on Upstream of Weir, Head for Broad Crested Weir is defined as the combination of broad crested weir head and the additional head. Head on Upstream of Weir is denoted by H_Upstream symbol.

How to calculate Head for Broad Crested Weir using this online calculator? To use this online calculator for Head for Broad Crested Weir, enter Total Head (H) & Additional Head (h_a) and hit the calculate button. Here is how the Head for Broad Crested Weir calculation can be explained with given input values -> 10.1 = (5+5.01).

FAQ

What is Head for Broad Crested Weir?

Head for Broad Crested Weir is defined as the combination of broad crested weir head and the additional head and is represented as H_Upstream = (H+h_a) or Head on Upstream of Weir = (Total Head+Additional Head). Total Head is the combination of weir crested and additional head & Additional Head is the applied head due to the velocity of approach.

How to calculate Head for Broad Crested Weir?

Head for Broad Crested Weir is defined as the combination of broad crested weir head and the additional head is calculated using Head on Upstream of Weir = (Total Head+Additional Head). To calculate Head for Broad Crested Weir, you need Total Head (H) & Additional Head (h_a). With our tool, you need to enter the respective value for Total Head & Additional Head 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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