duct sizing

efren

how do i size up duct work on a 10x65 sq. space.. 2 elbows, what would total cfm be?? help.. i just started working and that was my question to figure out.. ive searched every where with no luck.. just need example on how to do this....... thanks

beenthere

Need to know how much air flow you need for the area.

efren

Correct!!!!

fitter1

You need to learn how to use a ductulator. You can pick these up at a local sheet metal supplier. There are other factors also ie; heat and cooling loads, the number of people for fresh air requirements,static pressure. But I'll assume this is just a test question from your boss. Any supply house will gladly show you how to use one, not hard to do, good luck.

nice n easy

Download this ductsizer and have at it
http://www.mcquay.com/McQuay/DesignSolutions/Software

qbert

heat gain / loss will need to be known to determine unit size then comes duct sizing