By Ron Couillard, CADSoft Consulting Have you ever seen a drawing file you created with Civil 3D balloon in file size? Has this caused performance to take a nose dive? The following steps should help you get some improvement on getting smaller file size, and hopefully better performance: 1. Run an audit.
Source: Civil 3D DWG File Size To Big? Try These Steps | Acronym Online
Total BIM Makeover 