What are 2D CAD Drawings?
2D CAD Drawings can be split into 3 Main Groups
1. Product Drawings (which include Manufacturing Drawings, Fabrication Drawings etc.)
2D CAD Drawings are still used by the majority of Fabricators & Manufacturers, even though that most 2D CAD drawings where created from 3D CAD Models. The information that a fabriator/manufacturer basis his work on is still the 2D Drawing. A drawing you can print out on paper and has all the information that is required.
2. Construction Drawings (which include Architectural Drawings, Floor Plans, M&E Drawings etc.)
As with the Product Drawings, installers, builders etc. work from 2D CAD Drawings (Drawings they can print out and read). Depending on the type of drawing required these can either start in 3D (Floor Plans, Elevations etc, Pipe Runs) or in case of M&E Drawings show symbols (Switches, Sockets etc.) on a 2D Floor Plan.
3. Line Drawings (which would include Schematic, MAP Drawings, Simple Layout Drawings)
These drawing are created in CAD Packages such as Autodesk AutoCad or Dassault System Draftsight.