Hello,
I am looking at a heating pipework system. I am trying to size the system on a friction of 250 Pa/m, but for the pipe sections that are "Transition" flow, I am not give a friction. How can you size these pipes based on a friction using the pipe sizing tool in Revit
![Capture.JPG Capture.JPG](https://forums.autodesk.com/t5/image/serverpage/image-id/634901i0B2DCC62B7D393AA/image-size/large?v=v2&px=999)
![Capture2.JPG Capture2.JPG](https://forums.autodesk.com/t5/image/serverpage/image-id/634902iADC3288E02841BFE/image-size/large?v=v2&px=999)
Thank you,
Terry