Autodesk 235B1-05A761-1301 - AutoCAD MEP 2010, User Manual

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Sanitary Offset Sizing
When you define the sanitary run as an offset or a home drain, the plumbing module performs the sizing
calculations using the information on the Offsets tab in the sanitary plumbing line sizing table (pipe sizing
table), whose definitions can be found in Style Manager.
Most sanitary systems are found in buildings that contain multiple floors. Each floor of the building is
typically represented in a separate drawing. When sizing a sanitary system that spans multiple floors, you
must size the plumbing lines for each drawing separately, starting from the highest floor and working
downward. You can then reference the individual calculation values from the higher floors as you perform
sanitary plumbing line sizing on the lower floors. For more information, see
Sizing Sanitary Plumbing Lines
for Multiple Floors on page 512.
The software does not distinguish between a horizontal offset and a horizontal branch. Therefore, you might
want to create a style to represent a plumbing line that is a horizontal offset. For example, you could create
a style called Black Pipe - Horizontal Offset, and select this style from the list on the Properties palette when
you add the plumbing line.
510 | Chapter 10 Drawing Plumbing Systems