Both plumbing fixtures must be assigned to a sanitary system, but because the flow in a sanitary system depends on gravity, the piping should be sloped.
To create the sanitary system:
- Select one or more plumbing fixtures in the plan view.
- Click Modify Plumbing Fixtures tab
Create Systems panel
(Piping).
- In the Create Piping System dialog, specify the following:
- System Type: the type of fixture selected in the view determines which System Type it can be assigned to. For a plumbing system, the default system types are Sanitary, Domestic Cold Water, Domestic Hot Water, and Other.
- System Name: uniquely identifies the system.
Revit suggests a System Name or you can enter a name.
- Click OK.
The previously unassigned system is moved to the Piping folder in the System Browser.