FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Critical External Pressure Formula

Fx Copy

LaTeX Copy

Critical Pressure in Pipe is the maximum pressure developed in the pipe that will cause it's buckling in absence of stiffening rings. Check FAQs

P critical = \frac{20 \cdot E pa \cdot I}{{(D pipe)}^{3}}

P_critical - Critical Pressure in Pipe?E_pa - Modulus of Elasticity?I - Moment of Inertia?D_pipe - Diameter of Pipe?

Critical External Pressure Example

With values

With units

Only example

Here is how the Critical External Pressure equation looks like with Values.

Here is how the Critical External Pressure equation looks like with Units.

Here is how the Critical External Pressure equation looks like.

57.4544 = \frac{20 \cdot 1.64 \cdot 1.32}{{(0.91)}^{3}}

57.4544Pa = \frac{20 \cdot 1.64Pa \cdot 1.32kg·m²}{{(0.91m)}^{3}}

57.4544 = \frac{20 \cdot 1.64 \cdot 1.32}{{(0.91)}^{3}}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Civil » Category

Environmental Engineering » fx Critical External Pressure

Critical External Pressure Solution

Follow our step by step solution on how to calculate Critical External Pressure?

FIRST Step Consider the formula

P critical = \frac{20 \cdot E pa \cdot I}{{(D pipe)}^{3}}

Next Step Substitute values of Variables

∴

P critical = \frac{20 \cdot 1.64Pa \cdot 1.32kg·m²}{{(0.91m)}^{3}}

Next Step Prepare to Evaluate

∴

P critical = \frac{20 \cdot 1.64 \cdot 1.32}{{(0.91)}^{3}}

Next Step Evaluate

∴

P critical = 57.4544402584494Pa

LAST Step Rounding Answer

∴

P critical = 57.4544Pa

Critical External Pressure Formula Elements

Variables

Critical Pressure in Pipe

Critical Pressure in Pipe is the maximum pressure developed in the pipe that will cause it's buckling in absence of stiffening rings.

Symbol: P_critical

Measurement: PressureUnit: Pa

Note: Value should be greater than 0.

Formulas to find Critical Pressure in Pipe

Modulus of Elasticity

Modulus of Elasticity is a quantity that measures an object or substance's resistance to being deformed elastically when stress is applied to it in pascal.

Symbol: E_pa

Measurement: PressureUnit: Pa

Note: Value should be greater than 0.

Formulas to find Modulus of Elasticity

Moment of Inertia

Moment of Inertia is the measure of the resistance of a body to angular acceleration about a given axis.

Symbol: I

Measurement: Moment of InertiaUnit: kg·m²

Note: Value should be greater than 0.

Formulas to find Moment of Inertia

Diameter of Pipe

Diameter of Pipe is the diameter of the pipe in which the liquid is flowing.

Symbol: D_pipe

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Diameter of Pipe

Other formulas in Steel Pipes category

Go Plate Thickness Required to Resist Internal Pressure

p t = \frac{P i \cdot r}{σ tp \cdot η}

Go Internal Pressure given Plate Thickness

P i = \frac{p t}{\frac{r}{σ tp \cdot η}}

Go Radius of Pipe given Plate Thickness

r = \frac{p t}{\frac{P i}{σ tp \cdot η}}

Go Permissible Tensile Stress given Plate Thickness

σ tp = \frac{P i \cdot r}{p t \cdot η}

How to Evaluate Critical External Pressure?

Critical External Pressure evaluator uses Critical Pressure in Pipe = (20*Modulus of Elasticity*Moment of Inertia)/(Diameter of Pipe)^3 to evaluate the Critical Pressure in Pipe, The Critical External Pressure formula is defined as the value of the maximum pressure developed in the pipe that will cause it's buckling in the absence of stiffening rings. Critical Pressure in Pipe is denoted by P_critical symbol.

How to evaluate Critical External Pressure using this online evaluator? To use this online evaluator for Critical External Pressure, enter Modulus of Elasticity (E_pa), Moment of Inertia (I) & Diameter of Pipe (D_pipe) and hit the calculate button.

FAQs on Critical External Pressure

What is the formula to find Critical External Pressure?

The formula of Critical External Pressure is expressed as Critical Pressure in Pipe = (20*Modulus of Elasticity*Moment of Inertia)/(Diameter of Pipe)^3. Here is an example- 3.395035 = (20*1.64*1.32)/(0.91)^3.

How to calculate Critical External Pressure?

With Modulus of Elasticity (E_pa), Moment of Inertia (I) & Diameter of Pipe (D_pipe) we can find Critical External Pressure using the formula - Critical Pressure in Pipe = (20*Modulus of Elasticity*Moment of Inertia)/(Diameter of Pipe)^3.

Can the Critical External Pressure be negative?

No, the Critical External Pressure, measured in Pressure cannot be negative.

Which unit is used to measure Critical External Pressure?

Critical External Pressure is usually measured using the Pascal[Pa] for Pressure. Kilopascal[Pa], Bar[Pa], Pound Per Square Inch[Pa] are the few other units in which Critical External Pressure can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Critical External Pressure Formula

Critical External Pressure Example

Critical External Pressure Solution

Critical External Pressure Formula Elements

Other formulas in Steel Pipes category

How to Evaluate Critical External Pressure?

FAQs on Critical External Pressure

Variable Name