CAD Standards are a set of guidelines for the way Computer-aided drafting (CAD), or (CADD) 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.
Layers Name Conventions The AIA CAD Layer Guidelines defines layer naming strategies used throughout Digital Drawing for Designers. Discipline designators are the first letter used in each layer name. Major groups are four-character abbreviations that identify major building systems. The Minor Group field can be defined by the user, allowing additional layers to be added to accommodate special project requirements. This should only be done if a desired layer does not apply to a project. Some examples of layers using a user-defined Minor Group field are as follows. A-Door-Metl Metal Doors. A-Wall-Strc Walls To Structure. You select the options that you wish to use for layer names on a given project, and then apply the resulting format consistently for all layer names on that project. NOTE: For conceptual conformance to ISO 13567, Organization and Naming of Layers for CAD, the layer name format and length must be the same for all layers on a given project. Standard Layer Names. These names are based on CAD Layer Guidelines, Second Edition, Michael K. Schley, ed., published in 1997 by the American Institute of Architects in Washington, D.C. I have assigned colors and linetypes.
Aec (uk) cad standard for basic layer naming A unified CAD Standard for the Architectural, Engineering and Construction industry in the UK. Version 2.4 Based upon the guidelines laid down in BS1192 part 5 and ISO 13567 using the Uniclass classification system. Layers are available on the FPC web site. In accordance with the AIA layering standard, all layering names and information within shall adhere to the following guidelines. Only applicable layers are to be used. Blank layers shall be purged from the CAD drawing before creating the final deliverable CAD files.
AEC (Architecture Engineering and Construction) standards[edit]CAD layer standards[edit]
Most common:
Samples of standardised layers:
Line-thickness[edit]
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.
Text and dimension[edit]
Heights: 2,5 mm, 3,5 mm, 5,0 mm, 7,0 mm (stroke thickness (lineweight) should be 0.1 of the character height).Font styles: 'Romans.shx - Romantic Simplex', 'ISOCPEUR.ttf'. Exceptional use of screen fonts (arial, Times New Roman etc.).
Scales[edit]
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'(QUARTER SCALE), 6'=1'-0'(HALF SCALE), 1'-0'=1'-0'(FULL SCALE). File naming standards[edit]
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).
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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.dwgJob 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).
Mechanical CAD standards[edit]Model-based definition[edit]Autocad Layer Name Standards
Model-based definition (MBD) 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 (GD&T).
Subscribers of International Organization for Standardization (ISO) have the standards ISO 1101 and ISO 16792 for model-based definition.
Geometry quality[edit]Autocad Standard Layers List
VDA 4955
Product Data Quality[edit]
PDQ is a field of PLM relating to the quality of product data, particularly the geometrical and organizational quality of CAD data. Nikon dtm 322 manual pdf. 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.
See also[edit]
References[edit]
External links[edit]Cad Layer Standards
Autocad Structural Standard Layers Pictures
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