I select the complex 3d polyline as the trimming line, then when I go to trim the lines. IF I accidentally hover over the 3d polyline I am using to trim it just freezes for up to 5 minutes.
If I turn off live preview I don’t get the error?
The more complex the 3d polyline the longer the wait!
Well after some basic investigation I have found the problem.
Overlapping surfaces that both have contours displayed will cause freezing when osnaps is turned on.
Download the example file here – onsnaps-freeze1, see image below for explanation. Try and draw a polyline over the top of the overlapping area with onsnaps turned on
I can confirm that this happens in both Civil 3D 2014 and 2015. With 2015 recovering slighltly faster than 2014. say 3-5 minutes instead of 10 – 15minutes
See my previous post here to see the full process. This is an expansion on this process to bring in more or better quality imagery.
Once you have setup your coord system etc. as per previous post, you then want to zoom your screen down to the desired resolution. I find going one zoom level further in than you like is usually a good strategy.
Now you want to keep pressing “save as image” then panning your screen around to get the tiles you desire. Just use your middle mouse button, don’t zoom in and out. Give the images about 5/10% overlap.
Once you have saved all the images you need. Just read them back in to have a look at the finished result. I have saved 6 images below.
Now I want to merge them together as one image.
Raster -> Miscellaneous -> Merge
So now you just need to output your merged image in the desired coordinate system.
Right click the layer and press “save as”
Make sure you tick “rendered Image” and specify your desired coord system.
Give it a short moment to output
Now read into cad. Don’t forget to set your units to “meters” on command INSUNITS if you are using the metric system.
You should now have an image in CAD that is better resolution, or covers a more vast area
A common problem with Civil 3D. If you have a surface with a hole, the hole will not be filled with the surface you are pasting into. It will triangular across the hole like below.
Pond with hole in middle
Pond design with hole in the middle
When pasted together the middle is wiped out. Rather than the middle been taken by the existing surface pasted in first.
Pasting together removes the first surface definition and creates and empty space
I know you can create a “hole surface” as workaround, but this isn’t as dynamic.
Q: Thanks Brad. Looks like a good solution for this scenario where the spigots are in a straight line, but how would you go about doing a perimeter discharge (the most common type of TSF). The pathways and guidelines would be crossing over.
A: It’s a good question, I generally wanted to just show the basic concept in the original post. To do a perimeter discharge you just draw pathways coming back the other way and very roughly trim them up.
Here is how I would tackle it using the same method.
I start by making the one spigot discharge into a block. Then use the measure command to space it around the complex at 200m intervals. Align that block to the line and you get something like below.
permiter deposition
I delete a few of the stranger spigots, relocate as necessary then I just keep trimming the lines inside the block until I get to a point where I don’t have too much overlap. Like below. (If I trim in the block, they all change at once. J)
Perimeter Tailings Deposition, trim up block lines before exploding
Trim any major areas of overlap and then check your rough triangles surface, near enough is good enough here, minor overlap will be taken care of by the kriging routine,
Perimeter Tailings Deposition, check result in basic triangulation
Now just krig and trim, not a bad result I think?
Perimeter Tailings Deposition, finished result
Civil 3D news/tips/tricks from someone like you and also some Unity Game Development stuff