Thanks
I have checked that materials and it only assure me that ABD has not any tool that will allow me to make a specific hydraulic calculations after drawing a ventilation ductwork. The same situation is with revit and for that reason engineers are using for example magicad to make calculations.
My another question is does anyone knows any program/overlay that will work with aecosim and make calculations for ductwork which is drawn in aecosim?