AutoCAD MEP General Discussion

New Member
Posts: 1
Registered: ‎08-23-2012
Message 1 of 2 (296 Views)

duct sizing

296 Views, 1 Replies
08-23-2012 11:00 AM

hi, this might seem like a stupid question but i am just learning hvac on mep 2013 and the duct sizes sometimes come out in half sizes such as 13-1/2". i have set the flow rates on the diffusers and no matter what i try, i can't seem to get it to come out in straight sizes. am i missing a step?

*Expert Elite*
Posts: 1,144
Registered: ‎03-13-2008
Message 2 of 2 (289 Views)

Re: duct sizing

08-23-2012 12:48 PM in reply to: walter1959

Sounds like you are using the duct size calculator.  If you are then you can set it to use whole inch increments.  This is done by using the USE CATALOG SIZES dropdown as shown in the picture below and selecting "1 inch increment".


Duct Calculator.jpg



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