CADD Engineering Standards - Ohio Department of Transportation

January 18, 2013
The following annotation scales have been defined in ODOT_scales.def:
Engineering Scales
Architectural Scales
Name Scale Name Scale
Engr 1:1 1:1 Arch 12"=1'-0" 1:12
Engr 1:2 2:1 Arch 6"=1'-0" 1:6
Engr 1:3 3:1 Arch 3"=1'-0" 1:3
Engr 1:4 4:1 Arch 1 1/2"=1'-0" 2:3
Engr 1:5 5:1 Arch 1"=1'-0" 1:1
Engr 1:6 6:1 Arch 3/4"=1'-0" 4:3
Engr 1:8 8:1 Arch 1/2"=1'-0" 2:1
Engr 1:10 10:1 Arch 3/8"=1'-0" 8:3
Engr 1:20 20:1 Arch 1/4"=1'-0" 4:1
Engr 1:25 25:1 Arch 3/16"=1'-0 16:3
Engr 1:30 30:1 Arch 1/8"=1'-0" 8:1
Engr 1:40 40:1 Arch 1/16"=1'-0" 16:1
Engr 1:50 50:1 Arch 1/32"=1'-0" 32:1
Engr 1:100 100:1
Engr 1:200 200:1
Engr 1:250 250:1
Engr 1:400 400:1
Engr 1:500 500:1
Engr 1:1000 1000:1
Engr 1:2000 2000:1
Engr 1:5000 5000:1
Engr 1:10,000 10,000:1
Engr 1:25,000 25,000:1
Engr 1:50,000 50,000:1
Engr 1:100,000 100,000:1
Engr 1:250,000 250,000:1
Architectural scales are used for annotating bridge details when the text is placed in the design model
instead of the sheet model.
Engineering scales should be used for all Roadway sheets including the Bridge Site Plan sheet and
Geotechnical Exploration sheets.
See the Location and Design Manual, Volume 3 – Roadway Design, the Bridge Design Manual, and the
Specifications for Geotechnical Explorations (SGE) for recommended sheet scales.
46 ODOT CADD Engineering Standards