Manual D Speedsheet Primer 

Where were these videos 10 years ago when I needed them? Great video.

Amazing content!!! Thank you very much for posting this!!!

Where are the numbers in trunk lengh from?

How do I add more than 20 supply ducts?

Am I an idiot, or do the 2p groups not much the print? Doesn’t seem to match the example unless I am misunderstanding.

what is cfm???? in heat exchanger pr plssss video banao na

does this speed-sheet apply to zoning, VFD CFM ?

Where can I down load this spreadsheet?

why are we considering the equivalent length of every design at reference velocity 900 FPM and 0.08 Fiction factor? can we do that in different velocity and FPM ???