Civil 3d corridor cross section

[Anonymous]

Dear all

I am drawing a set of section views that show a corridor (blue lines) as well as the top of this surface (red) and the existing (green)

For some reason when i reference this into a drawing viewport, i get a lot of lines coming across diagonally as shown on the attached

Can anyone help fix this?

Thanks

Mark

[Jay_B · Accepted solution]

Those diagonal lines can appear when depths in subassemblies are set to zero.
Try setting all zero values to 0.0001