CAD standards
are a set of guidelines for the way Computer-aided drafting, or Computer Aided Design and Drawing, drawings should appear, to improve productivity and interchange of CAD documents between different offices and CAD programs, especially in architecture and engineering.
AEC (Architecture Engineering and Construction) standards
CAD layer standards
Most common:- BS 1192, which relies heavily on the Code of Procedure for the Construction Industry
- AIA Cad Layer Guidelines, 2nd edition, has a great usage in the USA;
- ISO 13567-1/3, International standard, common in Northern Europe;
- , an adaptation of BS-1192 based on Uniclass.
- ''A/E/C CAD Standard, Tri-service CAD standard created/maintained by the CAD/BIM Technology Center for Facilities, Infrastructure, and Environment…
- SIA 2014, Swiss standard for engineers and architects, based on ISO 13567.
- ÖNORM A 6240-4, Austrian standard for digital documentation in technical drawings, based on ISO 13567.
Line-thickness
Thickness for pens and plot: Gray, Red, White, Yellow, Magenta, Blue, Green. In AutoCAD usually parts to be printed in black are drawn in 1 to 7 basic colors. Color layer: Green-Center, Magenta-Measure of length and Blue-Hidden.| Description | Line thickness in mm | Color Codes |
| Out Line | 0.20 or 0.25 | White, Cyan, Yellow, Blue |
| Hidden Line | 0.00 or 0.05 | Blue, Gray, 241 |
| Center Line | 0.10 or 0.15 | Green, Red, Blue |
| Note | 0.18 or 0.20 | White, Cyan, Green, 41 |
| Thin Line | 0.00 or 0.05 | Gray, 08, 111 |
| Reference Line | 0.000 | Magenta, Gray |
| Hatch Line | 0.000 | Magenta, Green, Gray, red |
| Color-9 to 256 | 0.000 | |
| Dimension line | ||
| Leader Line with Arrows | 0.000 | Gray Color-9, or 8, Red |
| Text | 0.18 or 0.20 | Cyan, Green |
Text and dimension
Heights:,,, .Font styles: "Romans.shx - Romantic Simplex", "ISOCPEUR.ttf". Exceptional use of screen fonts.
Scales
2:1, 20:1, 200:1 …1:1, 1:10, 1:100 …
1:2, 1:20, 1:200 …
1:5, 1:50, 1:500 …
1⁄16″=1′-0″, 1⁄8″=1′-0″, 3⁄16″=1′-0″, 1⁄4″=1′-0″, 3⁄8″=1′-0″, 1⁄2″=1′-0″, 3⁄4″=1′-0″, 1″=1′-0″, 1 1⁄2″=1′-0″, 3″=1′-0″, 6″=1′-0″, 1′-0″=1′-0″.
File naming standards
- BS 1192:
Samples: A22P012G.dwg.
- AIA
- AEC
- AEC
Samples: 1234-A-Off-P-M1-Furn-11c.dwg, A-P-01-Part, 1234-A-S-055.dgn, A-S-xx-AA.dwg, A-P-x-Grid.dgn, 1838-S-C-P-03.
- Other local:
Samples: 0512-A-00A_-1-01-02.dwg
Job number, View, section, phase, revision
Samples: 123p0s2d0.dwg, 459s0BBD0.dgn.
it produces a large number of photos that could then be CAD into a file format
Mechanical CAD standards
Model-based definition
is a method of product specification using elements within 3D models as defined by ASME Y14.41-2012. ASME Y14.41-2012 is based upon ASME Y14.5-2009 symbols and definition methods, such as Geometry Dimensioning and Tolerancing.Subscribers of International Organization for Standardization have the standards ISO 1101 and ISO 16792 for model-based definition.
Geometry quality
4955Product Data Quality
PDQ is a field of PLM relating to the quality of product data, particularly the geometrical and organizational quality of CAD data. Checkers, software that analyze CAD data formats, are often employed before and after data translation.The checkers can check the organization and quality of the data against internal company standards and international or industry standards.
These checkers can be built into specific CAD packages or work on a number of :Category:CAD file formats|CAD file formats.
In 2006/2007 Part 59 of STEP ISO 10303-59 Product data representation and exchange: Integrated generic resource: Quality of product shape data is under development. It defines how to represent quality criteria together with measurement requirements and representation of inspection results.