Sanitary plumbing line sizing is typically required for sanitary black water system types. When you create sanitary system types for gray water, you need to define the system type as Waste in order for the sizing to work.
If you are working on a sanitary system in a building that contains multiple floors, see To Size Sanitary Plumbing Lines for Multiple Floors.
To size sanitary plumbing lines
The software highlights all plumbing lines, fittings, and fixtures connected to, and downstream from the plumbing line.
The software displays the Size Sanitary Plumbing Line dialog box.
The software uses the table definition to determine the maximum permissible fixture unit loads for the type of run that you specify in the next step.
The non-editable sections in the Size Sanitary Plumbing Line dialog box contain the results of the sizing calculations. For more information, see Reviewing the Results of the Sanitary Pipe Sizing.