Enter the allowable stress (PSI), the wall thickness (in), and the outside diameter (in) into the calculator to determine the Pipe Pressure.

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## Pipe Pressure Formula

The following formula is used to calculate the Pipe Pressure.

**Ppipe = (2*S*T/D)**

- Where Ppipe is the Pipe Pressure (psi)
- S is the allowable stress (PSI)
- T is the wall thickness (in)
- D is the outside diameter (in)

## How to Calculate Pipe Pressure?

The following example problems outline how to calculate the Pipe Pressure.

**Example Problem #1**

- First, determine the allowable stress (PSI). In this example, the allowable stress (PSI) is given as 10 .
- Next, determine the wall thickness (in). For this problem, the wall thickness (in) is given as 5 .
- Next, determine the outside diameter (in). In this case, the outside diameter (in) is found to be 3.
- Finally, calculate the Pipe Pressure using the formula above:

Ppipe = (2*S*T/D)

Inserting the values from above and solving yields:

Ppipe = (2*10*5/3) = 33.33 (psi)

**Example Problem #2**

Using the same method as above, determine the variables required by the equation. For this example problem, these are provided as:

allowable stress (PSI) = 100

wall thickness (in) = 7

outside diameter (in) = 8

Enter these given values yields:

Ppipe = (2*100*7/8) = 175** **(psi)