topic What is the .ctb standard for Autocad using files from Revit? in AutoCAD Forum

What is the .ctb standard for Autocad using files from Revit?

daniellkacraft — Tue, 04 Mar 2025 09:45:54 GMT

Does anyone know a standard plot style that would work when importing a Revit file into Autocad? Seems like a simple procedure but nowhere have I found a setup that works yet.

I read there is a NCS 4.0 .ctb but can not find it anywhere.

I read that Autocad used to have the import .pcp file when in the wizard which no longer is an option. Not sure why this was taken away. I cant be the only one who cannot understand why they would remove a major feature like this and replace it with no options.

Please help

Thank you,

Re: What is the .ctb standard for Autocad using files from Revit?

paullimapa — Tue, 04 Mar 2025 13:10:08 GMT

The user who created the Revit file and Exported them to a dwg hopefully has the ctb assignments properly done within their project which is why typically those dwg files created are accompanied with ctb files. If they are missing then you would need to go back and request for them.

Re: What is the .ctb standard for Autocad using files from Revit?

daniellkacraft — Tue, 04 Mar 2025 13:21:48 GMT

Revit does not work in .ctb so not sure how it would be synced to cad AIA standards,

It used to work with .pcp files which came with the Revit import. This doesn't work anymore.

Can't request something that doesn not exist.

Thanks for your reply

Re: What is the .ctb standard for Autocad using files from Revit?

paullimapa — Tue, 04 Mar 2025 13:30:35 GMT

I’m not sure what you mean when you posted about importing Revit into AutoCAD. AutoCAD cannot import Revit files. In Revit you have to Export to create a dwg file for AutoCAD to open. It’s during that Export process the ctb files are also generated. If you’ve properly setup Revit you can assign the colors you want so that when dwgs are exported they would match whatever the ctb file you want to end up to match. But this does take setup time on the Revit side and does not necessarily come standard out of the box. You may want to post this question on the Revit forum on how to setup the proper colors for a dwg export.

Re: What is the .ctb standard for Autocad using files from Revit?

paullimapa — Tue, 04 Mar 2025 14:04:42 GMT

Have you tried converting the pcp file to ctb using this method

https://resources.imaginit.com/support-blog/how-to-get-revit-lineweights-into-autocad

Re: What is the .ctb standard for Autocad using files from Revit?

pkolarik — Tue, 04 Mar 2025 14:25:32 GMT

You can layer-map the objects in Revit to autocad layer names/colors/etc. If you setup the mapping such that the resulting layers correspond to AIA standards then you've got what you need in the format you need it. It's a pretty simple procedure, but can take some time depending on your situation.

Re: What is the .ctb standard for Autocad using files from Revit?

RSomppi — Tue, 04 Mar 2025 17:14:12 GMT

@paullimapa wrote:
It’s during that Export process the ctb files are also generated.

I don't see that option in Revit 2024. Is that new for 2025?

Re: What is the .ctb standard for Autocad using files from Revit?

paullimapa — Tue, 04 Mar 2025 17:16:29 GMT

Actually a pcp file is created and then you’ll have to convert to ctb

Re: What is the .ctb standard for Autocad using files from Revit?

RSomppi — Tue, 04 Mar 2025 17:21:02 GMT

Yes. That is correct.

Betreff: What is the .ctb standard for Autocad using files from Revit?

K_Kubat — Wed, 05 Mar 2025 07:03:54 GMT

Since version 2024, importing pcp files into AutoCAD is no longer possible

Betreff: What is the .ctb standard for Autocad using files from Revit?

paullimapa — Wed, 05 Mar 2025 07:25:28 GMT

a good reason to keep an older autocad version around

Re: What is the .ctb standard for Autocad using files from Revit?

pendean — Wed, 05 Mar 2025 14:24:51 GMT

@daniellkacraft wrote:
Does anyone know a standard plot style that would work...

MONOCHROME is the stock AutoCAD one that works best until you take the time to create one unique to you custom needs. There is no universal solution.