3d dwg import is a nightmare

[AP23]

Does anyone know how to import a 3d dwg into Revit without Revit freezing and hanging. Revit becomes extremely slow to the point that panning and zooming is virtually impossible. I can import the geometry into Rhino, Form-z, Maya without any problems and maintain the speed. I hope I'm the one that is doing something wrong. It would be a bit akward to have a software that can't import its own sister software while other non-autodesk software import 3d dwgs without any problems.

[knurrebusk]

Why would you import this model into Revit?
Seems like a better choise to model in Revit from the start.

Is this a model that needs to be finished in Revit?

[AP23]

Why would you import this model into Revit?
Seems like a better choise to model in Revit from the start.

This is a model, form an existing building. I was fortunate enough to get hold of a 3d dwg model with only the structure and facades in it. I seems very difficult to model such complex elements with lots of double curved beams, trusses and glazing elements from scratch. I don't really know how to model something like this with the limited massing tools provided in Revit. So, I'm just teaching myself how to import complex geometry and do some "roof by face", "floor by face", "curtain wall by face" exercises.

[knurrebusk]

Whow!!

If you can finish this in style I´m more than impressed.
All luck to you in the effort.

[knurrebusk]

I´ll try to assist!
Since I´ve been part of the Maxwell Render RC1 nightmare this weekend, I´ll try to get some sleep first.

But I´m not the average user on this forum, so if sometimes leave for a long time.

[iru69]

Does anyone know how to import a 3d dwg into Revit without Revit freezing and hanging.
That's kind of a loaded question - though I can imagine it might be a bit frustrating at the moment.

How big is the dwg file? Any possibility you could post it to see if others are able to import it? I've imported some pretty big 3d dwg files into Revit in order to create content (cars and furniture and stuff) - I don't remember ever having any major problems.

[cosmickingpin]

Well, I think you will have better results if you instead of importing it directly into a *.rvt project file, you import the file into a Revit family and load it into your project. AN even better idea is to is to divide the file into several families based on layers and object type, to better control display properties. I recently did a project where the file I received from a design architect that was 150megs and was totally useless in Revit, and could hardly be opened in max or cad. So I remodeled the site and building in a day (about the size of yours from the look of it) and had a file that was a whopping 15 megs with even greater detail than the 150meg file. The different families can be placed on different worksets and then can be opened separately and the performance can be as good as you want it. Again I also want to know how big the file is, however you don't need to post it for me.



Does anyone know how to import a 3d dwg into Revit without Revit freezing and hanging. Revit becomes extremely slow to the point that panning and zooming is virtually impossible. I can import the geometry into Rhino, Form-z, Maya without any problems and maintain the speed. I hope I'm the one that is doing something wrong. It would be a bit akward to have a software that can't import its own sister software while other non-autodesk software import 3d dwgs without any problems.

[ejburrell67787]

If you want to use the dwg file to generate walls / floors / roofs by face then you will need to import the dwg into a family file anyway.

1. Either open a new mass family and then import the dwg. Then in the revit project file load the new mass family in.

2. Or create an in-place mass family and import the dwg in.

[knurrebusk]

Do you have access to Rhino?

First clean up the model using weld/unify etc.
Then export the model using (save small)

But why not take the effort to redesign in Revit?

[knurrebusk]

If Christmas was not so close, I would be interested to remodel this in Revit.
Are far more qualified persons than me on this board, so I´m not gonna tell it´s a breeze.
Is it possible for you to share this model?

I would enjoy looking at it, perhaps it can be solved by massing tools.

[AP23]

I've done everything suggested in this post. Import to rhino, make surface planes and weld. i've even imported to 3ds max and then export to revit. Also i've imported individual layers after cleaning them up in rhino or in Max and then palcing them into a family but that didn't work. Either my computer hung or revit couldn't make walls, floors and roofs from faces. And it's not only this project i'm having trouble with but also other geometries made in rhino. If I create a curved floor in rhino and import it into revit, revit can't make floor from curved surfaces. I guess the people form revit believe that walls alwasy have to be vertical, floors always have to be horizaonal and curtain walls and ,mullions don't ben in two directions.

Making this geomtry in Revit form scratch seems vertualy impossible in a short time frame. Revit doesn't have any lofting tool like rhino (cage tool for 3ds max), it doesn't have any 2 way rail, no control points, no meshes. These are the tools you need to create most comples curves in a short time. You probably can do it all in revit, but you need to be very well trained and have a lot of time.

Here is the link to the files : http://briefcase.yahoo.com/alexanderbell77
Users ID: alexanderbell77
Password : blobproject

Files and pictures are under folder blob.

[hand471037]

Files and pictures are under folder blob.

I'm not seeing anything in there. is it still uploading or something?

[knurrebusk]

I understand your frustration, but in real life some segmentation normally happens.
This can be very useful part of Revit the next years, until better beams/columns appear.

If you are serious in not segmenting anything, Inventor is my best advice.
I see your dilemma, though.

I tried to make a very similar building parametric in Inventor many years ago.
I ended up almost there, if not for sketching on curved surfaces aggrh.

[AP23]

I'm not seeing anything in there. is it still uploading or something?

You have to sign in first.

user ID: alexanderbell77
password: blobproject

[knurrebusk]

I´m not able to download.
Still this made me curious of my old project.

Perhaps we all can benefit/help each other out.

[iru69]

I "recovered" the file in AutoCAD (it found a number of errors).

I removed the broken x-ref.

I imported it into a Mass family in Revit.

It took about five minutes to load.

I got the following error message:
"Some ACIS objects could not be imported. To import them, use
AutoCAD to convert them into polymesh objects and reimport."

It's extremely slow.

[chuaheyia]

same experience with Revit Architecture