Is it possible to import a 3D DWG (lines) to be used as a path for a sweep? I'm assuming (because I've found that it appears not to possible) that model lines must be assigned to a workplane and that "floating" 3D lines from a DWG aren't assigned workplanes and therefore can't be converted into Revit Model Lines.
David William Edwards
It is possible to utilize 3D forms or lines from a CAD file. You should be able to use the “Pick Lines” tool and TAB select the CAD import as needed. Make sure “Draw on Face” is active. Also you can simply add lines with “3D Snapping” active to trace over any 3D points; no work plane required:
Video Example: http://screencast.com/t/nqEsIFxN14cI
Thank you,
Is this only in the Conceptual Mass Families or v2011? (I'm on 2010.) None of the suggestions seem to work. Tabing on a CAD import just beeps. Drawing lines only creates lines on the active workplace. 3D Snapping doesn't work on lines, only points.
A lines-only DWG should be able to be brought into Revit, exploded and those lines used for whatever. Currently an explode collapses the lines to the current workplane. This is pretty basic.
David William Edwards
It should work in 2010 as well.
A good approach is to utilize 3D snapping, which shoukld allow you to draw lines in Revit along any path you can snap to. I did a quick example of this in the Revit 2010 video below:
Video Example: http://screencast.com/t/r3jgseALr
Thank you,
My 27 years of CAD experience is failing me. 3D Snapping only is an option in an Conceptual Mass Family. Once selected only Reference points can be placed. If Pick Lines are used, the Lines are created on the current workplane.
I give up... this should be a very simple procedure...
David William Edwards
a few years later.....is this possible yet as i need to model a tunnel, i can do this in other programs, like microstation really easily but i'm lost with revit... (i only have several months experience but cant get my head around this?)
I too would be interested in further discussion on this topic!
Thanks,
Samu
I would also like to know if/how this can be done!
Too bad the video examples are gone...
Hello,
I've imported a 3D DWG line into a generic adaptive family. (on this 3dline where already placed several points annotated with there coordinates).
I've used the spline through points line in plan view and changed the z-coordinate for each point (offset in properties)
Now you can import the adaptive family in you project.
Andy Windey
Senior BIM designer
BESIX - BELGIUM
Hello all,
Thank you for the reply, Andy. It's just very time-consuming to manually change the z-coordinate when you are working with hundreds or thousands of points...
You would think that there's a way to automate the process. Anyone?
Samu
I've tried to draw 'a spline through points line' in a 3d view and snapping to the points from the imported 3d dwg and it works.(in the generic adaptive family) so you only have to redraw the line !
But I didn't find a way to automate this process...
Andy Windey
Senior BIM designer
BESIX - BELGIUM
...and several more years later, wouldn't you believe it...still a problem!! WTF Autodesk - this is pretty standard stuff. I've tried in-place mass, conceptual mass family, generic family....nothing works, all picked lines go to the current workplane.
I too am wishing, simply wishing, to make tunnels. I want to pick the 3d lines from Autocad as a path and apply the tunnel profile. SIMPLE! Not!
Autodesk, how about a fix for this - 4+ years is long enough huh.
Cheers in advance
I'm been told that this has to do with Revit's insistance that everything be hosted, including 3D lines which could be used as a path to create a Sweep which is not hosted. Go figure!
One more year............any solutions yet?? Or some kind of workaround? Need to use a 3D polyline from CAD
EDIT: painfull workaround: I managed to generate in autocad a 3D surface from EACH of the lines in the poly, then this planes can be set as the workplane in revit and then just use the pick lines tool, it gets the job done but is VERY VERY inefficient.
I've found that 90% of the time you can insert the DWG file into the conceptual mass environment and pick up the end points and lines no problem. However 10% of the time Revit just won't pick up anything at all!
I use the following "intuative" workflow in those cases:
i got the same problem.i just want to build a tunnel with a path which built in civil 3D. but the revit can not import the 3dline in a dwg file. Even the sketchup can import it very well. how stupid!!!
Revit can't see the 3D objects from civil3D, but, if you export out as lines which will have Z-Values Revit will see that. It has been a wishlist item for quite some time for better interaction between Civil3D and Revit without a lot of workarounds.
You can import a 3D polyline in a adaptive generic compoennt family, then define 3D points in the vertices of the lines of the path, then use the "line throguh points" (or something like that) command an use it to make a sweep with the section profile of the tunnel.
This is what I did in the end with my problem https://www.youtube.com/watch?v=fuiqg3nEAkE
The coordinates from the path in civil3D were extracted to a excel file, dynamo reads the file, creates the points and a lot of other things...you could do something similar in case you path has many points and is very likely to change.
In revit to trace the 3D-models of dwg needs to follow a long process.
You need to create reference planes for each side (not view) each face of the model... It is very tedious
Example
This example, was modeled in 3ds max Export it as .dwg to Autocad to setup the layers. Then import this to Revit in a Generic Model Adaptive.
It's absurd that in 2018 this is still the only way to do it without having to pass through Dynamo... just to pick a 3D polyline as a path... Any new update??