BIM Q&A: How to Generate and Interpret the Revit Stress Loss Report

BIM Q&A | How to Use the Revit Stress Loss Report

Wondering how to use the Revit pressure loss report and how to draw pipelines into a system that can be analyzed? Learn how to view and understand the pressure loss report and discover its purpose.

Revit MEP allows you to generate pressure loss reports for duct and piping systems within your project.

Before creating the pressure loss report, you may want to use the “Adjust Duct Size” or “Adjust Pipe Size” tools to optimize your system.

To generate the report, first select the systems you want to include, then configure the report settings. You can choose which fields to display, such as diameter, height, and width, and decide whether to include additional information like system details and critical paths. The report can be saved as an HTML or CSV file.

Selecting the System for Reporting

You can select the system either before or after launching the pressure loss report command. For example, you can:

• Select one or more systems directly in the drawing area, then click on Duct Pressure Loss Report or Pipe Pressure Loss Report.
• Choose one or more systems from the System Browser, right-click, and select Pressure Loss Report.
• Go to the Analysis tab, open the Report and Detail Table panel, click on Duct Pressure Loss Report or Pipeline Pressure Loss Report, and select the systems in the “Pressure Loss Report – System Chooser” dialog box.

To narrow down the list of systems, use the System Type filter.

You can choose to calculate pressure loss for all systems. If a system’s calculation setting is “traffic only” or “none,” a warning will appear, or the system won’t show up in the list.

Note that pressure loss reports cannot be generated for fire protection systems or gravity piping systems, such as sanitary systems.

Ensure the system is fully connected before generating the report. Use the System Inspector tool to verify connectivity.

Configuring the Report

Once you’ve selected the systems to include, you can customize the report settings.

If you have previously saved a report format in the “Pressure Loss Report Settings” dialog, you can select it from the list.

To save a new report format, configure the settings as needed, click Save, enter a name for the format, and click OK.

Both duct and pipeline pressure loss reports have their own formats, which are stored alongside the default template.

Choose which fields to include in your report from the available list.

You can enable or disable the display of the following sections as needed:

• System Information
• Critical Path
• Detailed segment information divided by section
• Summary of loss factors for pipe fittings and accessories by profile

If desired, enable the option to automatically open the report after it is generated.

Click Generate to create the report.

In the Save As dialog box, enter a file name, choose the file format (HTML or CSV), and click Save.

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