CAD standards
Encyclopedia
CAD Standards have been created to improve productivity and interchange of Computer-aided design
documents between different offices and CAD programs, especially in architecture and engineering.
Samples of standardised layers:
Font styles: "Romans", "ISO CP". Exceptional use of true type fonts (arial, etc.).
Discipline (1 char), Element (2 char, using SfB Table 1 or Uniclass), Drawing type (1 char, P=preliminary, X=special/xref, L=layout, C=component, S=schedules, A=assembly drawings, K=co-ordination drawing), Unique number (3 char), Revision (1 char, A=emission, B,C,D...= revisions).
Samples: A22P012G.dwg (architect, internal walls in SfB, preliminary design, sheet 012, revision G).
Samples: ZE1G-124.dwg, XE1G-100.dwg
Project (unlimited char), Discipline (2 char max, recommended mandatory), Zone (optional), View (1 char, rec.mand.), Level (2 char, rec.mand.), Content (rec.mand.), Sequential number (up to 3 char);
Samples: 1234-A-Off-P-M1-Furn-11c.dwg (project #1234, architect, office zone, plan, mezzanine 1, furnitures, version 1.1 revision c) , A-P-01-Part (architect, plan, 1st floor, partitions), 1234-A-S-055.dgn (project #1234, architect, section, sheet 055), A-S-xx-AA.dwg (architect, section, full building, section AA), A-P-x-Grid.dgn (architect, plan, all floor, grid), 1838-S-C-P-03 (project 1838, structures, building C, plan, 3rd floor).
Job number (4 char), Agent (1 char), Section (4 char), phase (1 char), sheet number (2 char), revision (2 char)
Samples: 0512-A-00A_-1-01-02.dwg
Job number (3 char), View (2 char), section (2char), phase (1 char), revision (1 char)
Samples: 123p0s2d0.dwg (job 1239, plan, 2nd floor, definitive drawing, emission), 459s0BBD0.dgn (job 123, section B, definitive drawing, emission).
(PMI), a 3D extension of Geometric Dimensioning and Tolerancing (GD&T), include ASME Y14.41-2003
Product Data Definition and ISO 1101 Representation of specifications in the form of a 3D model.
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 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.
Computer-aided design
Computer-aided design , also known as computer-aided design and drafting , is the use of computer technology for the process of design and design-documentation. Computer Aided Drafting describes the process of drafting with a computer...
documents between different offices and CAD programs, especially in architecture and engineering.
CAD layer standards
Most common:- BS 1192BS 1192BS 1192 is the British Standard that establishes the methodology for managing the production, distribution and quality of construction information, including that generated by CAD systems, using a disciplined process for collaboration and a specified naming policy...
, which relies heavily on the Code of Procedure for the Construction Industry - AIA Cad Layer Guidelines, 2nd edition (1997), has a great usage in the USA;
- ISO 13567ISO 13567ISO 13567 is an international Computer-aided design layer standard.-Standard parts:The standard is divided in three parts:* ISO 13567-1:1998**Technical product documentation — Organization and naming of layers for CAD — Part 1: Overview and principles...
-1/3, International standard, common in Northern Europe; - AEC (UK), an adaptation of BS1192 based on Uniclass.
- A/E/C CADD Standard, CADD/GIS standards adopted by U.S. Government's CADD/GIS Technology Center for Facilities, Infrastructure, and Environment..]
- SIA 2014 (1996), Swiss standard for engineers and architects, based on ISO 13567.
Samples of standardised layers:
- A-B374--E- (ISO13567: agent Architect, element Roof window in SfB, presentation graphic element);
- A-37420-T2N01B113B23pro (ISO13567: agent Architect, element Roof Window in SfB, presentation Text#2, New part, floor 01, block B1, phase 1, projection 3D, scale 1:5(B), work package 23 and user definition "pro");
- A-G25---D-R (ISO13567: agent Architect, element wall in Uniclass, presentation dimensions, status Existing to be removed);
- A-G251-G-WallExtl-Fwd (AEC(UK): agent Architect, element External Wall in Uniclass, presentation graphic element, user definition "WallExtl" and view Forward);
- A210_M_ExtWall (BS1192: agent Architect, element External Wall in SfB, presentation model, user definition "ExtWall");
- A-WALL-FULL (AIA: agent Architect, element Wall, Full height).
Line thickness
Thickness for pens and plot: 0,13 mm Gray, 0,18 mm Red, 0,25 mm White, 0,35 mm Yellow, 0,50 mm Magenta, 0,70 mm Blue, 1,00 mm 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 |
| Note | 0.18 or 0.20 | 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: 1,8 mm, 2,5 mm, 3,5 mm, 5,0 mm, 7,0 mm (relative thickness are 1/10 of the heights).Font styles: "Romans", "ISO CP". Exceptional use of true type fonts (arial, etc.).
File naming standards
- BS 1192BS 1192BS 1192 is the British Standard that establishes the methodology for managing the production, distribution and quality of construction information, including that generated by CAD systems, using a disciplined process for collaboration and a specified naming policy...
:
Discipline (1 char), Element (2 char, using SfB Table 1 or Uniclass), Drawing type (1 char, P=preliminary, X=special/xref, L=layout, C=component, S=schedules, A=assembly drawings, K=co-ordination drawing), Unique number (3 char), Revision (1 char, A=emission, B,C,D...= revisions).
Samples: A22P012G.dwg (architect, internal walls in SfB, preliminary design, sheet 012, revision G).
- AIAAmerican Institute of ArchitectsThe American Institute of Architects is a professional organization for architects in the United States. Headquartered in Washington, D.C., the AIA offers education, government advocacy, community redevelopment, and public outreach to support the architecture profession and improve its public image...
- AEC
Samples: ZE1G-124.dwg, XE1G-100.dwg
- AEC (UK)
Project (unlimited char), Discipline (2 char max, recommended mandatory), Zone (optional), View (1 char, rec.mand.), Level (2 char, rec.mand.), Content (rec.mand.), Sequential number (up to 3 char);
Samples: 1234-A-Off-P-M1-Furn-11c.dwg (project #1234, architect, office zone, plan, mezzanine 1, furnitures, version 1.1 revision c) , A-P-01-Part (architect, plan, 1st floor, partitions), 1234-A-S-055.dgn (project #1234, architect, section, sheet 055), A-S-xx-AA.dwg (architect, section, full building, section AA), A-P-x-Grid.dgn (architect, plan, all floor, grid), 1838-S-C-P-03 (project 1838, structures, building C, plan, 3rd floor).
- Other local:
Job number (4 char), Agent (1 char), Section (4 char), phase (1 char), sheet number (2 char), revision (2 char)
Samples: 0512-A-00A_-1-01-02.dwg
Job number (3 char), View (2 char), section (2char), phase (1 char), revision (1 char)
Samples: 123p0s2d0.dwg (job 1239, plan, 2nd floor, definitive drawing, emission), 459s0BBD0.dgn (job 123, section B, definitive drawing, emission).
Geometric Dimensioning and Tolerancing
Industry standards for defining Product Manufacturing InformationProduct Manufacturing Information
Product and manufacturing information, also abbreviated PMI, conveys non-geometric attributes in 3D computer-aided design and Collaborative Product Development systems necessary for manufacturing product components or subsystems. PMI may include geometric dimensions and tolerances, 3D...
(PMI), a 3D extension of Geometric Dimensioning and Tolerancing (GD&T), include ASME Y14.41-2003
ASME Y14.41-2003
- What is ASME Y14.41 :The American Society of Mechanical Engineers issued the first version of this industrial standard on Aug 15, 2003. It was immediately adopted by several industrial organizations, as well as the Department of Defense...
Product Data Definition and ISO 1101 Representation of specifications in the form of a 3D model.
Product Data Quality
PDQ is a field of PLMProduct lifecycle management
In industry, product lifecycle management is the process of managing the entire lifecycle of a product from its conception, through design and manufacture, to service and disposal...
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
CAD data exchange
CAD data exchange involves a number of software technologies and methods to translate data from one Computer-aided design system to another CAD file format...
.
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 CAD file formats.
In 2006/2007 Part 59 of STEP ISO 10303
ISO 10303
ISO 10303 is an ISO standard for the computer-interpretable representation and exchange of product manufacturing information. Its official title is: Automation systems and integration — Product data representation and exchange...
-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.
See also
- Model based definitionModel based definitionModel based definition , also known as digital product definition , is the practice of using 3D digital data within 3D CAD software to provide specifications for individual components and product assemblies...
- Construction Project Information CommitteeConstruction Project Information Committee' is the Construction Project Information Committee, responsible for providing best practice guidance on the content, form and preparation of construction production information, and making sure this best practice is disseminated throughout the UK construction industry.The Committee is formed from...
- UniclassUniClassUniclass , published in 1997 in UK by the Construction Project Information Committee ....
- ISO Standards Handbook - Technical drawings, a broad collection of all basic ISO drawing standards
- Vol.1 Technical drawings in general, ISBN 92-67-10370-9
- Vol.2 Mechanical engineering drawings, construction drawings, drawing equipment, ISBN 92-67-10371-7
- ISO 128ISO 128ISO 128 is an international standard , about the general principles of presentation in technical drawings, more specific the graphical representation of objects on technical drawings.- Overview :...
Technical drawings—General principles of presentation - ISO 13567ISO 13567ISO 13567 is an international Computer-aided design layer standard.-Standard parts:The standard is divided in three parts:* ISO 13567-1:1998**Technical product documentation — Organization and naming of layers for CAD — Part 1: Overview and principles...
Technical product documentation - Organization and naming of layers for CAD - ISO 16792 Technical product documentation — Digital product definition data practices, for the presentation of 3D models and GD&T
- ASTM F2915 Additive Manufacturing File FormatAdditive Manufacturing File FormatAdditive Manufacturing File Format is an open standard for describing objects for additive manufacturing processes such as 3D printing. The official ASTM F2915standard is an XML-based format designed to allow any computer-aided design software to describe the shape and composition of any 3D object...
- Kiziltas, S.; Leite, F.; Akinci, F.; Lipman, R. (2009) “Interoperable Methodologies and Techniques in CAD”. Chapter 4. In: CAD and GIS Integration. Karimi, H.; Akinci, B. (ed.). Taylor & Francis. p. 73-110.
External links
- AutoCAD Layer Names for Architecture / Interiors (PDF available)
- aec-uk.org Home of the AEC(UK) standards.
- EatyourCAD CAD Manager site containing guides on implementation of AEC(UK)CAD Standard plus downloads of ready to use standards - search for tag AEC.