Civil 3D "Point not on entity" 1

[francesca]

I'm creating corridors in Civil 3D and one of my corridors is giving me the error "Point not on entity" for a 150' segment of the alignment. Does anyone know how to resolve this?

I'm using Autodesk Civil 3D 2006 version Z.77.0 with service pack HF2 on WinXP SP2.

 

[CADMILES]

francesca,
If you do a Google search for "point not on entity", there is a link to an Autodesk discussion group that seems to be related to your question.

 

[francesca]

Thanks. For posterity, the answer is:

The no intersection message is typically displayed when the daylight link cannot find a point on the surface to attach to at the slope you specificed.
Basically if you draw a slope from the edge of the road at the slope you specified it will miss the surface.

In other words, I got that error because the fill slope extended beyond my DTM limits, which makes sense of why the error disappeared when I changed my fill slope grade.