AutoCAD Civil 3D

[#1]

i have a surface that is data linked into a drawing. the surface displays good in paper and model space. when i save and close out of the drawing and get back into the drawing the surface no longer displays. in toolspace, surface, the surface is listed. when i synchronize the surface it displays again, but when i save, close, and reopen it is not there again. i have no clue why it is doing this. there are 10 drawings in this project and it is doing this for 8 of them. other jobs are fine. i have tried using different computers and i get the same results (tried on 5 different computers).

[#2]

Maybe right click on the surface in Toolspace and chose rebuild automatic?

[#3]

it is already has that to be automatic

[#4]

What version are you running?  I've heard that newer versions than mine have a "level of detail" option which controls how much a surface will display, depending on zoom level.

[#5]

windows 7 64 bit 8 gig ram, 2013. level of detail is turned off. i think that we have narrowed the problem down to either a pipe network problem or a xref problem

[#6]

the surface doesn't have any errors when rebuilding?

this has happened to me before and the problem was resolved when carefully fixed overlaping feature lines or even boundary objects crossing feature lines.

Strangely enough, and certainly not a fix to your problemf, i found selecting the surface from toolspace, deleting it, then undoing the delete made the surface display.

[#7 · Accepted solution]

I have had this problem when my surface is rather large such as when created from contours from LIDAR data.

I found that if I change the surface style to one that shows the triangles the surface will display.

I then change the style back to the one I want and it displays. I don't know why this works, but it

is the way I can make the surface display. Hope this helps.

[#8]

I'll give that I try. My surface is somewhat large and it does use lidar

[#9]

I am having a similar problem on a surface.  My only work around is to sync the surface after open. Again like others not a solution but it seems to work.  This is frustrating because the point of the dynamic is to automate these things. 

[#10]

Sync works but I have to sync every time I get into the drawing and you can't publish the drawings because the surface does not show up.