Internal Pressure % SMYS

The calculation provides the maximum internal pressure given pipe specs and % SMYS. These factors are used in the design of roads and railroads. Pressure in the pipe i.e. gauge.
External loading on the pipe is additive and must be considered separately using PLTB API 1102 external loading calculations.

Input Parameters

1. Select the Internal Pressure % SMYS application from the Steel Pipe – Design and Stress Analysis module
2. To create a new case, click the “+” button
3. Enter Case Name, Location, Date, and any necessary notes
4. Fill out all required fields.
   Make sure the values you are inputting are in the correct units
5. Click the CALCULATE button

• Nominal Pipe Size(in):(0.625” – 48”)
• Wall Thickness(in):(0.068”- >2”)
• Pipe grade:(24000psi-80000psi) (if unknown use Grade A 24000)
• Percent of SMYS (%)

Outputs/Reports

1. View the results
2. If an input parameter needs to be edited be sure to hit the CALCULATE button after the change
3. To SAVE, fill out all required case details then click the SAVE button
4. To rename an existing file, click the SAVE As button. Provide all case info then click SAVE
5. To generate a REPORT, click the REPORT button
6. The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon
7. To delete a case, click the DELETE icon near the top of the widget

• Internal Pressure(psi)

Related Links

Pipeline Design & Stress Analysis
Pipeline HUB — User Resources