About Calculating the Sizes of Sanitary Plumbing Lines

Before you size a sanitary system, you should:

• Complete a draft of the system.
• Verify the accuracy of the fixture unit table you are using. For more information, see Specifying Fixture Unit Tables.
• Create a sizing table for sanitary plumbing lines based on applicable codes, such as the Uniform Plumbing Code, or verify the accuracy of the table you are using. For more information, see Specifying Pipe Sizing Tables.

Note: You can only size sanitary plumbing systems whose system type is Waste.