A couple Duct Lining question

[Michael.c]

Yes you will have to do some maths...hopefully it's not too tough

The maths is easy.....it's the remembering to DO the maths that's hard

[JoelLondenberg]

I made a duct tag to use on working views that shows the flow, velocity and friction. Helps me to find this sort of thing. You can also use fancy filters to change duct colors if one of those values is out of range...there are lots of nifty engineering nudges you can set up.