Hey Don, I saw your video and I believe somewhere in here you mentioned different ductwork for different types of duct routing and different roughness values. I just wanted to let you know that duct lining has its own roughness which gets used to determine the friction losses. By default it is set to 0.0003', however I just got an email from Johns Manville indicating 0.0050' as a realistic value. In my duct main at 1000 FPM, just brought the friction up about 50%, good thing we checked! Thanks for posting.
Hey There, yes we can definitely offer live training both online and in person. Please shoot us an email at whyatg@atgusa.com and we'll get you going from there!
Thank you Don! This tutorial is extremely informative and helpful!
Hey Don, I saw your video and I believe somewhere in here you mentioned different ductwork for different types of duct routing and different roughness values. I just wanted to let you know that duct lining has its own roughness which gets used to determine the friction losses. By default it is set to 0.0003', however I just got an email from Johns Manville indicating 0.0050' as a realistic value. In my duct main at 1000 FPM, just brought the friction up about 50%, good thing we checked! Thanks for posting.
Nice teaching! Can you offer an online live teaching? If yes how can we proceed?
Hey There, yes we can definitely offer live training both online and in person. Please shoot us an email at whyatg@atgusa.com and we'll get you going from there!
Where did you get that family of fittings?
my ducting is not catching the remotest air terminal? whats the problem?