I have two questions,
1. How can you add or show clearance space around a duct riser in a shaft. I can draw lines, but this does not work well. I need to show a dashed lines 6" around all my risers.
2. I have a duct riser, and I have a duct takeoff on a floor, when I connect the duct to the riser, the beveled tap is either going to the left , or to the right, how can you get the beveled tap to go vertically upwards.