Importing contours AutoCAD file

Srinivas — Thu, 11 Jun 2015 01:15:51 GMT

Hello all,

I have received huge data in contours format (1m interval & each CAD file 200MB to 400 MB total 12nos) from client and the total area covers around 12313.9 hectares. They don't have other format and it is totally hilly terrain.
Each time I upload CAD file model file size increase around 400MB to 700MB. I was compressed model file after each CAD file upload. After uploading 5 files Mx was not responding and Model file crashed. I have tried several times.
Can you please suggest me any other way without losing data?

MX XM version

Regards,

Sri

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Importing contours AutoCAD file