If the software cannot find a match for the fixture in the specified fixture unit table, it does not assign default fixture unit values to the fixture. To take advantage of the application of default values, you should create and use fixture unit tables that correspond to the plumbing fixtures.
When performing sizing calculations for plumbing lines, the software uses the fixture unit values applied to the fixtures in your drawing. If you plan to do plumbing line sizing, you should first identify the fixture unit tables to use and verify their accuracy.
The software includes a sample fixture unit table based on industry standards. However, you or your CAD manager should create fixture unit tables to meet your project requirements and conform to applicable codes, such as the Uniform Plumbing Code. You can use the sample table as a guide.