CADD Drawings Standard
Bookmarked PDF files of all Schematic Drawing Documents, and original working documents
in MS Office 2007 format and AutoCAD files of all drawings per CUMC CAD Layering
Standards are required for all capital projects. For a detailed outline of the CADD layering
standards, please see Attachment Layer and Font Standarads.
All project architectural and engineering drawings must also be populated into the CUMC
electronic document management system. The architect may also provide these documents in a
pdf format on a CD-ROM to the attention of Capital Project Management.
Columbia University has computerized construction related documents. The intent of these
standards is:
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not to jeopardize the efficiency of the consultant’s internal drawing/development methods by
imposing overly ambitious CAD standards;
to provide a set of documents that are consistent with the needs of Columbia University for
accurate archival, reference, and furniture construction; and
to avoid duplication of existing drawings (base floor plans of most buildings and a site plan in
CAD are available for reference).
Columbia University has adopted CAD layer guidelines which closely conform to the AIA
(American Institute of Architects) standards. With respect to the various systems, software, mad
standards used in today’s industry, we ask that our format be followed as closely as possible.
Layer numbering can be ignored on systems that do not have this feature. Elements not
conforming to the list provided must be given their own layer and listed accordingly.
Format/Media
A. All CAD drawings will be submitted in AutoCAD R12 or higher format (.DWG). Drawing
Exchange format (.DXF) will be accepted only if .DWG formatted files are unavailable.
B. All drawing files will be submitted on a CD ROM or to an FTP site.
C. In addition to CAD drawings of specific areas, an additional file must be delivered to reflect said
changes on the entire floor of the job in progress. These changes can be indicated on a copy on a
university standard space plan file, which are typically used for consultant distribution.
D. All submitted files will be clearly labeled with the Columbia University Facilities project number,
building code, sheet numbers, consultant name, construction completion date, date of submittal,
and list of drawing files. Labels will be firmly attached to the media submitted.
Drawing Organization
A. All drawing files will be 100% complete and will be submitted when construction is finished.
Manual corrections not reflected in the CAD drawings are not acceptable.
B. There will be one drawing file for each drawing sheet and it will include only the information on
that drawing sheet. Depending on the system/software used, the “PURGE ALL” command or
equivalent will be performed prior to submittal to remove unused elements.
C. All building drawings will be orientated such that the northern face of the building is at the top of
the drawing.
D. If Architectural and Mechanical symbols are used which are not identified by a legend on the
sheet upon which they appear, then a separate drawing file containing those symbol legends or
those symbol definitions will accompany the drawing files on the same diskette as the drawing
file where they are used.
E. All drawing schedules (i.e., Door Schedules, Mechanical Equipment Schedules, Electrical Panel
Schedules, etc.) that are used will have an equivalent ASCII file on the same diskette as the
drawing file where they are used.
F. Room numbers, building codes, and building names established by Columbia University will be
used on all submittal drawings.
G. The consultant is responsible for utilizing a uniform sheet size for each set of project drawings
submitted.
Drawing Documentation
A. Layers – For each drawing file the consultant will submit a separate ASCII file with a complete
list of all layers containing the following information:
1. The layer name as it appears on the drawing file.
2. Expanded description of layer name.
3. List of elements placed on that layer (i.e., bearing walls, partitions, plumbing, fixtures,
etc.).
4. The default color and line type of layer.
All layer names provided by the consultant will not exceed 16 characters and will conform to
University naming conventions outlined in the layer requirements; these standards are derivative
of the 1990 Cad Layer Guidelines of recommended designations for architecture, engineering,
and facility management computer aided designs. The colors for these layers should be limited
to 1(red), 2(yellow), 3(green), 4(cyan), 5(blue), 6(magenta) or 7(white).
B. Text – Lettering font will be limited to Simplex font for small fonts and Bigfont for big fonts.
Systems lacking these fonts will utilize the simplest text font available to them. In the event that
other fonts are used they must be included with the drawing file.
C. Scale – All elements should be drawn on a 1 to 1 scale such that distances reflect true size.
D. Symbols/Blocks – Symbols will follow the convention as outlined in the latest edition of
Architectural Graphic Standards published by the American Institute of Architects.
1. All mirrored symbols, blocks, dimensions, or other composite entities such as doors and
windows should be reflected with respect to x-axis or y-axis only.
2. Windows will consist of two or three parallel lines; window mullions are required.
3. Doors will be drawn using double lines 2” apart and a single are to indicate door swing.
Swing will be shown at 90 degrees to door opening whenever possible. Doorjambs
should not be drawn.
Drawing Specifics
1. Architectural
A. Non-full height partitions will be drawn as walls and put on A-WALL-LOW layer. To
distinguish partitions from other interior walls, partitions intersecting walls will not be a
trimmed.
B. Construction layout lines used in the drawing will exist on a unique layer. All
construction lines used in the drawing which do not apply to a basic building layout or
are not specific to the integrity of the drawing to which they apply will be deleted.
2. Utilities
A. All utility drawings will be drawn to actual size.
B. When clustered utilities hinder interpretation, a separate detail will be required and
referenced to the area.
C. Dimension exact spacing between underground utility lines to the inch.
D. If utilities outside the building are affected, a separate utility scheme (drawing) will be
submitted.
Attachment – Layer and Font Standards
Layer and Font Standards
for
Columbia University Medical Center
Layer name
Color
Line type
Description
0
A-DOOR
A-FLOR-EVTR
A-FLOR-IDEN
A-FLOR-SHFT
A-FLOR-STRS
A-FLOR-STRS-HRAIL
A-ROOF
A-WALL-EXTR
A-WALL-INTR
A-WNDW
Defpoints
G-ANNO-TTLB
G-ANNO-TTLB-SYMB
G-ANNO-TTLB-TEXT
I-FURN
I-FURN-CASE
L-SITE
P-FLOR-FIXT
POLY_COMMON
POLY_CORE
POLY_EGROSS
POLY_IGROSS
POLY_ROOM
POLY_RM_NO
S-COLS
S-GRID
VP1
7 (white)
"Continuous" Do not draw on this layer
5 (red)
"Continuous" Doors
2 (yellow) "Continuous" Elevators & Components
2 (yellow) "Continuous" Targets, Names
7 (white)
"Continuous" Shafts
2 (yellow) "Continuous" Stairs & Landing/ Break Line
2 (yellow) "Continuous" Stair handrails
1 (red)
"Continuous" Roof
5 (blue)
"Continuous" Exterior Wall
3 (green)
"Continuous" Interior Wall
4 (cyan)
"Continuous" Windows
7 (white)
"Continuous" Nonplotting info
7 (white)
"Continuous" General Boarder & Title blocks
7 (white)
"Continuous" General North Arrow & Scale & Logo
7 (white)
"Continuous" Title Block Text
6 (Megenta) "Continuous" General Furniture (i.e. Chairs, Tables)
6 (Megenta) "Continuous" Cabinetry/ Casement (i.e. Lab Benches, Built-in Shelves)
4 (cyan)
"Continuous" Landscape site/ Step/ Handrail/ Drainage sytem/ Sidewalk
6 (Megenta) "Continuous" Plumbing Fixtures, Toilets, Sinks
5 (red)
"Continuous" Common Polygon
6 (Megenta) "Continuous" Core Polygon
5 (red)
"Continuous" Exterior Polygon
5 (red)
"Continuous" Interior Polygon
4 (cyan)
"Continuous" Room Polygon
2 (yellow) "Continuous" Room Number
2 (yellow) "Continuous" Structural Columns
2 (yellow) "Center2"
Structural Column Grid/Grid Tag
5 (red)
"Continuous" View Port