What's the limits in a DWG file?

[alanchen123]

Hi, Are there any official document describe the limits in a DWG file? For example, the maximum number of blocks that can be added, the maximum number of layers, the maximum length of an object name, etc.? Thanks

[rkmcswain]

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@alanchen123 wrote:
Hi, Are there any official document describe the limits in a DWG file? For example, the maximum number of blocks that can be added, the maximum number of layers, the maximum length of an object name, etc.? Thanks

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No, I don't know of any documentation on this. If any info will help, read on.

Some objects, like Layers used to be limited to 2¹⁵-1, or 32767.
IIRC, I was, at one time, able to create more layers than that in a DWG file, but it was very unstable after that and ended up crashing and the DWG was corrupt after that.

I suspect other objects such as blocks, etc are limited to the same number.
The object name limit is 255 for blocks and the same for other objects I believe.

See also: http://forums.autodesk.com/t5/AutoCAD-2000-2000i-2002-DWG/How-many-layers-are-possible/td-p/107866

[braudpat]

Hello

If I remember well :

- You are limited to 255 layouts !

But you can have more with programming because the atlas generation of MAP (or CIVIL) can generate hundreds of layouts ...

- You can have more than 255 images inserted ...

I imagine it's the same for DWG XREFs !?

Waiting for more feedbacks ...

Bye, Pat