NETSYS duct sizing methodshttps://communities.bentley.com/products/building/performance/f/hevacomp-forum/113905/netsys-duct-sizing-methodsWhich duct sizing method is employed to Hevacomp NETSYS duct sizing.. Friction loss method? Static regain method? Velocity method?en-USTelligent Community 12RE: NETSYS duct sizing methodshttps://communities.bentley.com/thread/348545?ContentTypeID=1Tue, 01 Dec 2015 10:21:09 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:959e1702-e926-4b18-905b-2ba549a77048Duncan BrownPhilip - The method used is the Colebrook White equation, as can be found in CIBSE guide C. The methods used are detailed in the Netsys Ductwork Manual, section 10, which can be accessed through pushing F1 or clicking on the ? icon in the Netsys program.<br /> <br /> Regards,<div style="clear:both;"></div>