- Add duct, and lay out the duct run, as explained in Drawing a Duct Run.
- Specify the point in the layout where you want to draw a duct run with a vertical slope.
- In the Properties palette
Routing Options Slope format and specify Slope. - Specify the end point for the sloped segment.
- To turn off sloped layout and return to horizontal runs, under Routing Options, enter a slope of 0.
- Continuing specifying points for the duct run geometry.
If you add a vertical segment at the end of a sloped segment, you may be prompted to choose a part. If a fitting with the proper angle does not exist, you can accept the creation of a custom transition.