The topics in this section explain how to modify the segments and runs based on design changes or layout requirements. You can move single objects or groups of connected objects. You can change the system, elevation, shape, size, and part type of a duct segment. You can also use the duct system size calculator and instant sizing tool to recalculate duct sizes as you refine your systems. You can also change a duct fitting in a run, the position of an off-center fitting, or a custom fitting.
To enhance visual clarity in a drawing, you can also assign hatching patterns to ductwork to identify different duct systems. For example, you can assign hatching patterns to ductwork that will be demolished as part of a building modification.