ISO 13567 - CAD layer standard

ISO 13567 is an international Computer-aided design (CAD) 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
  • ISO 13567-2:1998
    • Technical product documentation -- Organization and naming of layers for CAD -- Part 2: Concepts, format and codes used in construction documentation
  • ISO/TR 13567-3:1999
    • Technical product documentation -- Organization and naming of layers for CAD -- Part 3: Application of ISO 13567-1 and ISO 13567-2
Standard has been developed by Technical Committee TC 10 (Technical product documentation) Subcommittee SC 8 (Construction documentation); Refer. ICS: 01.110; 35.240.10.

Structure of layers names

CAD layer names are structured as series of mandatory and optional fixed length fields, composed as a continuous alpha-numerical text string.

Mandatory fields

Agent responsible <clause 6.1>
(2 characters, indicating the person or organisation responsable for the layer information
-- manufacturer,
A- architect
A2 architect#2 on the same project
B- building surveyors
C- civil engineers
E- electrical engineers
F- facility engineers
G- GIS engineers and land surveyors
H- heating and ventilating engineers
I- interior designers
L- landscape architects
Q- quantity surveyors
S- structural engineers
T- town and country planners
W- contractors
X- sub-contractors
Y- specialist designers 
Element <cl. 6.2>
(6 characters, indicating the functional parts of construction works or structure): follows a classification system like SfB building codes or UniClass codes;
Presentation <cl. 6.3>
(2 characters, related to the information graphical presentation)
-- whole model and drawing page,
E- element graphics (Model space)
T- text (M)
H- hatching (M)
D- dimensions (M)
J- section/detail marks (M)
K- revision marks (M)
G- Grid graphic and dimension (M)
U- user red lines & contruction lines (M)
B- Border (Page/Paper space)
V- text, title, notes (P)
I- tabular information, legeds, schedules, tables/query (P)
-1 language#1 or pen thickness#1 or text height#1

Optional fields

Status <cl. 7.1>
(1 character, status of the physical part, ISO code)
- whole, no subdivision
N new part
E existing to remain
R to be removed
T temporary
O to be moved original position
F to be moved final position
Sector <cl. 7.2>
(4 characters, physical subdivision of construction work, recommanded to use ISO 4157-2/3 codes)
---- whole project, all levels all blocks
00-- ground floor
02-- 2nd floor
-1-- basement
SA-- section AA
EA-- elevation A
EB-- elevation B
--B1 block 1
--A- zone A
01B1 1st floor block#1
-2-- 2nd basement level
01A- storey 01 zone A
Phase <cl. 7.3>
(1 character, time or logical subdivision of work)
- whole duration
P pre-design/preliminary
D design
R procurement
C construction
O post-construction
1 phase#1 (pre-design)
2 phase#2
3 phase#3 (licence design)
Projection <cl. 7.4>
(1 character, work multiple views differentiation, ISO code)
- all
0 plan
1 elevation
2 section
3 3D model
Scale <cl. 7.5>
(1 character, classification of layer informations by the scale of final drawing, ISO code)
- all
A 1:1
B 1:5
C 1:10
D 1:20
E 1:50
F 1:100
G 1:200
H 1:500
I 1:1000
J 1:2000
K 1:5000
1 1:1-5
2 1:5-20
3 1:20-50
4 1:20-100
5 1:50-200
6 1:200-500
7 1:500-1000
Work Package <cl. 7.6>
(2 characters, materials and/or work sections)
RC reinforced concrete
SS structural steel
23 phase#23
User Defined <cl. 7.7>
(unlimited, additional subdivision or help plain description): description or subdivision.

Special characters

- (hyphenation) not used field
_ (underscore) relative to all possible characters


Resulting length

In practice, application of ISO 13567 fields can lead to short names (only mandatory fields), or much longer names (use of some or all optional fields in complex projects).

Short names samples

agent Architect, element Roof window in SfB, presentation text
agent Architect, element Roof window in SfB, presentation graphic element
  • A-374---T-
  • A-24--__D-

Long names samples

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"
agent Architect, element wall in Uniclass, presentation dimensions, status Existing to be removed
  • A-2441__D-N01AB1
  • A-37420-T2N01B113B23pro
  • T-811---E-N----30F--DESCRIPTION_OF_LAYER
  • A1645---Z-O----1-A72DESCRIPTION_OF_LAYER
  • A-DUCTS-E-N02C------P281
  • F-5821ABE-N-I--13C23USER
  • A-144001M-----

List of layers in a standard architectural drawing

Agent is Architect, using ISO 13567, UniClass Table G and Table H (exceptionally F and J tables).
A-------E-: all elements
A-------T-: text
A-------H-: hatchings
A-------D-: dimensions
A-------J-: section/detail marks
A-------K-: revision marks
A-------G-: grid (graphics and dimensions)
A-------U-: user (red and construction lines)
A-------B-: border (border lines/frame and other graphics) in paper space
A-------V-: text (title and notes) in paper space
A-------I-: tabular informations (legends, shedules and tables) in paper space
A-------E-N: new work elements
A-------E-E: elements existing to remain 
A-------E-R: elements existing to be removed
A-------E1: line thickness 0,13 mm
A-------E2: line thickness 0,18 mm
A-------E3: line thickness 0,25 mm
A-------E4: line thickness 0,35 mm
A-------E5: line thickness 0,50 mm
A-------E6: line thickness 0,70 mm
A-------T1: text height 1,8 mm
A-------T2: text height 2,5 mm
A-------T3: text height 3,5 mm
A-------T4: text height 5,0 mm
A-------T5: text height 7,0 mm
A-------T6: text height 1,0 mm
A-F1----E-: zones (blocks, wings, floors, departments)
A-F2----E-: rooms 
A-F2----T-: room numbers and text
A-F3----E-: circulation (foyers, halls, stairs, corridors, gangways)
A-F9----E-: building space analysed (areas)
A-F911--E-: usable area (ISO 9836)
A-F912--E-: circulation area (ISO 9836)
A-F913--E-: services area (ISO 9836)
A-F914--E-: structural element area (ISO 9836)
A-F919--E-: gross area (ISO 9836)
A-G-----E-: building
A-G11---E-: site clearance
A-G12---E-: ground contouring
A-G2----E-: building fabric
A-G21---E-: foundations
A-G21---E5: foundations in section
A-G22---E-: floors, slabs
A-G22---E5: floors, slabs in section
A-G23---E-: stairs (incl. balaustrades), ramps
A-G23---E5: stairs and ramps in section
A-G24---E-: roofs
A-G24---E5: roofs in section
A-G25---E-: walls
A-G25---E5: walls in section
A-G251--E-: external walls
A-G252--E-: internal walls
A-G26---E-: structural frame, columns, beams, bracing
A-G26---E5: structural frame, columns, beams, bracing in section
A-G321--E-: windows
A-G322--E-: doors
A-G33---E-: internal finishes (on floor, ceilings, walls)
A-G331--E-: floor finishes
A-G332--E-: ceilings/soffit finishes
A-G333--E-: internal wall finishes
A-G4----E-: fittings, furnitures, equipments
A-G44---E-: sanitary fittings
A-G50---E-: water supply (water pipes)
A-G501--E-: cold water
A-G502--E-: hot water
A-G51---E-: gas supply
A-G52---E-: heating/ventilation/air conditioning (HVAC) (HVAC ductworks)
A-G53---E-: electric power (cable runs)
A-G54---E-: lighting fixtures (fittings)
A-G55---E-: communications (radio, TV, telephones, computer networks)
A-G561--E-: lifts
A-G562--E-: escalators
A-G57---E-: protection (security, fire)
A-G581--E-: removal /disposal, drainage
A-G6----E-: energy (heat, electricity) generation, storage and conversion
A-G7----E-: external site works
A-G71---E-: surface treatment of external site (hard surfaces, landscaping)
A-G72---E-: enclosures of external site (fence, walls)
A-G74---E-: fittings/furnitures/equipment of external site (manholes)
A-G77---E-: underground drainage in external site (drain runs)
A-H-----E-: civil engineering works (non-building)
A-H1----E-: pavements and landscaping (ground, pavements, etc.)
A-H122--E-: surfacing to pavements and hard landscaping
A-H123--E-: edgework to pavements and hard landscaping
A-H132--E-: electrical installations (mechanical, lighting, power, communications)
A-H142--E-: fittings
A-H1422-E-: signs
A-H1424-E-: street furniture
A-H735--E-: drainage (non building)
A-JE0---E-: concrete
A-JF1---E-: block/brick work
A-JF2---E-: stone
A-JG1---E-: metal
A-JG10--E-: structural steel
A-JG2---E-: timber
A-JK3---E-: glass
A-Z001--T-: identification tags, rooms, door numbers
A-Z400--E-: special presentation
A-Z410--E-: cars
A-Z420--E-: people
A-Z430--E-: trees
A-Z900--U-: non-plotting
A-Z920--E-: external reference (Xref)

Note: Elements cutted by section has been provvisionally indicated as A-****--E5 (reflecting the use of a wider line). An alternative -but longest- notation could be A-****--E-------2 (defining the view as section) or A-****--ES.
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