By default, concentric Ductwork will be created by Revit, if you want to use eccentric fittings a new ‘Type’ will have to be defined or imported from another Project.
In this post we will work through the process of creating a new Ductwork ‘Type’ that uses eccentric fittings.
We will need to duplicate an existing type and define an eccentric fitting is used when we transition from one size to another.
Select some existing ductwork and ‘Edit Type’ – ‘Duplicate’ and ‘Rename’.
The fittings used within the new type are defined by the ‘Routing Preferences’.
In this case we want to use an eccentric taper for the transition, so edit the ‘Routing Preferences’ and select the ‘Rectangular Eccentric Taper - Flanged: Standard’ under the ‘Transition’ heading.
Note, if this family is not available you will need to load it from the Library.
‘Load Family’ – Duct – Fittings – Rectangular – Taper.
Now the new type has been defined we are ready to place the ductwork run.
The ‘Justification’ of the ductwork will need to be set to either left or right.
While using this type, the eccentric fittings are placed where required.