There are some things to be made aware of when creating a Surface from contours. Don't forget the contours are a result of the triangulation process of importing breaklines, spot shots, interior boundaries and exterior boundaries. You should also remove the contour labels and connect the contour where the text was before importing.
In InRoads, you can use the import graphics to a surface with your settings set to contour or breakline.
This process may not be entirely 100% accurate and caution should be used. It will be fine for initial designs while awaiting for survey info which is the better alternative.
In InRoads, you can use the import graphics to a surface with your settings set to contour or breakline.
This process may not be entirely 100% accurate and caution should be used. It will be fine for initial designs while awaiting for survey info which is the better alternative.