Export to DXF

I never tried it but if you speak python you could look here to write your own:
http://www.revitapidocs.com/2018.1/fd65887a-3d13-3ff1-ec95-7c0379317c85.htm
http://www.revitapidocs.com/2018.1/00783eca-208f-cc58-d56f-b47814a6957a.htm
https://msdn.microsoft.com/en-us/library/92t2ye13

Also check this post for analogy

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