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Inlet Capacity for Flow Depth Formula

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The Water Flow refers to the movement of water through various natural or engineered systems. Check FAQs

Q w = 3 \cdot P \cdot y^{\frac{3}{2}}

Q_w - Water Flow?P - Perimeter of Grate Opening?y - Depth of Flow at Inlet?

Inlet Capacity for Flow Depth Example

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With units

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Here is how the Inlet Capacity for Flow Depth equation looks like with Values.

Here is how the Inlet Capacity for Flow Depth equation looks like with Units.

Here is how the Inlet Capacity for Flow Depth equation looks like.

14.6074 = 3 \cdot 5 \cdot {7.117}^{\frac{3}{2}}

14.6074m³/s = 3 \cdot 5ft \cdot {7.117ft}^{\frac{3}{2}}

14.6074 = 3 \cdot 5 \cdot {7.117}^{\frac{3}{2}}

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Inlet Capacity for Flow Depth Solution

Follow our step by step solution on how to calculate Inlet Capacity for Flow Depth?

FIRST Step Consider the formula

Q w = 3 \cdot P \cdot y^{\frac{3}{2}}

Next Step Substitute values of Variables

∴

Q w = 3 \cdot 5ft \cdot {7.117ft}^{\frac{3}{2}}

Next Step Convert Units

∴

Q w = 3 \cdot 1.524m \cdot {2.1693m}^{\frac{3}{2}}

Next Step Prepare to Evaluate

∴

Q w = 3 \cdot 1.524 \cdot {2.1693}^{\frac{3}{2}}

Next Step Evaluate

∴

Q w = 14.6074401125476m³/s

LAST Step Rounding Answer

∴

Q w = 14.6074m³/s

Inlet Capacity for Flow Depth Formula Elements

Variables

Water Flow

The Water Flow refers to the movement of water through various natural or engineered systems.

Symbol: Q_w

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value can be positive or negative.

Formulas to find Water Flow

Perimeter of Grate Opening

The Perimeter of Grate Opening refers to the boundary or outline of the opening in a grate that allows water to enter a storm water collection or drainage system.

Symbol: P

Measurement: LengthUnit: ft

Note: Value should be greater than 0.

Formulas to find Perimeter of Grate Opening

Depth of Flow at Inlet

The Depth of Flow at Inlet refers to the depth of water in a channel or conduit at the point where water enters a structure, such as a culvert, intake structure, or storm water inlet.

Symbol: y

Measurement: LengthUnit: ft

Note: Value can be positive or negative.

Formulas to find Depth of Flow at Inlet

Other formulas in Disposing of Storm Water category

Go Runoff Quantity with Full Gutter Flow

Q ro = 0.7 \cdot L o \cdot {(a + y)}^{\frac{3}{2}}

Go Length of Opening given Runoff Quantity with Full Gutter Flow

L o = \frac{Q ro}{0.7 \cdot {(a + y)}^{\frac{3}{2}}}

Go Depression in Curb Inlet given Runoff Quantity with Full Gutter flow

a = ({(\frac{Q ro}{0.7 \cdot L o})}^{\frac{2}{3}}) - y

Go Depth of Flow at Inlet given Runoff Quantity with Full Gutter Flow

y = ({(\frac{Q ro}{0.7 \cdot L o})}^{\frac{2}{3}}) - a

How to Evaluate Inlet Capacity for Flow Depth?

Inlet Capacity for Flow Depth evaluator uses Water Flow = 3*Perimeter of Grate Opening*Depth of Flow at Inlet^(3/2) to evaluate the Water Flow, The Inlet Capacity for Flow Depth up to 4.8in is defined as the capacity of the structures built to control the flow of water known as inlets when flow depth is up to 4.8 inches. Water Flow is denoted by Q_w symbol.

How to evaluate Inlet Capacity for Flow Depth using this online evaluator? To use this online evaluator for Inlet Capacity for Flow Depth, enter Perimeter of Grate Opening (P) & Depth of Flow at Inlet (y) and hit the calculate button.

FAQs on Inlet Capacity for Flow Depth

What is the formula to find Inlet Capacity for Flow Depth?

The formula of Inlet Capacity for Flow Depth is expressed as Water Flow = 3*Perimeter of Grate Opening*Depth of Flow at Inlet^(3/2). Here is an example- 1.857965 = 3*1.5240000000061*2.16926160000868^(3/2).

How to calculate Inlet Capacity for Flow Depth?

With Perimeter of Grate Opening (P) & Depth of Flow at Inlet (y) we can find Inlet Capacity for Flow Depth using the formula - Water Flow = 3*Perimeter of Grate Opening*Depth of Flow at Inlet^(3/2).

Can the Inlet Capacity for Flow Depth be negative?

Yes, the Inlet Capacity for Flow Depth, measured in Volumetric Flow Rate can be negative.

Which unit is used to measure Inlet Capacity for Flow Depth?

Inlet Capacity for Flow Depth is usually measured using the Cubic Meter per Second[m³/s] for Volumetric Flow Rate. Cubic Meter per Day[m³/s], Cubic Meter per Hour[m³/s], Cubic Meter per Minute[m³/s] are the few other units in which Inlet Capacity for Flow Depth can be measured.

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