Ducts are drawn, the fan, terminals and fittings are inserted via a series of pull down menus. These menus also cater for the entry of VAV boxes and plenums and provides for the nomination of a listener position for the detailed noise calculations.
The data for the calculations is extracted from the drawing and the calculations performed via items on the Utilities Menu
The overall results including duct sizes, pressure drops terminal NR levels, damper out-of-balance pressures and noise levels at selected frequencies can all be displayed on screen on the actual duct layout drawing. In addition detailed results for individual terminals, fittings and the fan can be displayed selectively in convenient list boxes.
Quantities for costing including the weight of sheet metal, the number of terminals, dampers, etc. fabrication erection and shop drawing manhours can also be displayed to enable the user to find cost effective solutions.