controlling tesselation of pipe style in crossing/interferance?

[DRW_CAD]

I'm showing a pipe interferance in profile view. using a crossing style set to use part dimensions. It basically shows as an octogon rather than a smooth elipse. Is there a way to control this? I thought maybe the pipes were not truly round but 8 sided but when I look at them in object viewer, they appear round but section view at exageration doesn't appear as an ellipse. Any way of adjusting this?

[SethHall · Accepted solution]

The variable you are going to want to change is FACETDEV, and here is a thread discussing this: http://forums.autodesk.com/t5/AutoCAD-Civil-3D/cross-sections-showing-pipes/m-p/2766572#M137028

[DRW_CAD]

Thank you Seth. Just what I was looking for.