Extra lines appear when importing cadd drawing into revit

[chhuanmawia18]

these lines (highlighted and pointed in arrow)appear when importing cadd 3d contour lines and creating a toposurface. they are not a layer in the cadd drawing but appear when creating the toposurface from imported file option . how can i turn them off or delete them

[kadmonkee]

link the file and only turn on layers you need in Revit , create your topo surface then turn off the link to see if that is cleaner

if the cad file is imported then only import the layers you need 

[hmunsell]

there may be a Surface already in the C3D file. like @kadmonkee  suggests, check your layers that are coming in from the CAD file.

• VG > Imported Categories
• select the CAD Link
• uncheck the unwanted layers.
  • you may need to talk to the C3D person and find out what layers they  are using.

[barthbradley]

That's not uncommon.  You may be able to "smooth" them out through using the Simplify Surface tool (available inside Toposurface edit mode).  

...another way, is by adding ZERO Elevation Points RELATIVE TO SURFACE in the vicinity of that line work.  

[chhuanmawia18]

i did this but still not working

[chhuanmawia18]

the lines are not a part of autocadd layers in this problem

[chhuanmawia18]

tried it butnot working

[barthbradley]

Post the 2 files. 

[hmunsell]

can you post the file?

[chhuanmawia18]

here it is

[chhuanmawia18]

posted it , the acadd file is from a surveyor 

[barthbradley · Accepted solution]

comes out beautiful if I just select the Layers CONT-MJR and CONT_MNR.  

[chhuanmawia18]

thanksa lot! still having some problems but this was really useful