Duct Sizing

Ducts can be sized using three different methods: constant velocity, constant pressure drop, or static regain. In addition, you can specify size and shape constraints. Any combination of width, depth, and shape can be set and locked. When the CFM values in a duct are changed, Design Master remembers which settings you locked and which it can change and calculates the appropriate size for the duct.

For example, if you are working in a ceiling space that only allows ducts of 24" depth in them, you can tell Design Master that. Ducts that are sized will not exceed that 24" depth, increasing their width instead if they need to be that big.