Architectural Drawing. Architectural Layer Standards. Architectural Layer Standards. General
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Architectural Layer Standards
The CAD Layer Guidelines are organized as hierarchy. This arrangement accommodates expansion and addition 0f user-defined extensions to the layer list. Layer names are alphanumeric and use abbreviations that are easy to remember. This legibility is particularly important when CAD files are distributed among architects, consultants, and clients. Layer names consist of a Discipline Code-Major Group-Minor Group-Status Field.
The format for the CAD Standard is as follows:
Discipline is the primary method of classification for layer names. The discipline code provides a path back to the originator of the data and provides a logical categorization of CAD information. The discipline code is intended primarily to identify the author of the graphic information. Thus, a structural column placed by an architect would be A-COLS rather than S-COLS. The existence of both sets of information can in fact indicate the need for coordination. The Discipline Code is a one or two-character field with the second character either a hyphen or a user-defined modifier. The discipline codes are listed below.
A Architectural M Mechanical
C Civil P Plumbing
E Electrical Q Equipment
F Fire Protection R Resource
G General S Structural
H Hazardous Materials T Telecommunications
I Interiors X Other
L Landscape Z Contractor/shop Drawings
This is an optional, four-character field for further differentiation of Major Groups. For example, A-WALL-PART indicates architecture, new, wall partial height. The following modifiers are defined for use in the Minor Group field.
Appl Appliances Bnch Benchmarks
Cars Graphic Illustration of Cars Cols Columns
Dims Dimensions Elev Elevations, Elevation text, 3D, etc.
Esmt Easements, Row, and Setback Lines Fenc Fencing
Fixt Fixtures Grnd Bushes, Ground Covers and Vines
Iden Identification Legn Schedule, Legend,
Misc Miscellaneous Note Notes
Patt Hatch Pattern Number Peop People
Pfix Plumbing Fixtures Roof Roof
Site Site Step Steps
Strs Stairs, Treads, Escalators, and ladders Symb Symbols
Tele Telephone Text Legends and Schedules Text
Ther Thermostats Tptn Toilet Partitions
Ttbl Title Blocks