CADD Engineering Standards - Ohio Department of Transportation

January 18, 2013
COGO Roadway / Misc. Elements
Chains / Profiles
Cable Line CABt###o
Construction Limit CON###o
Construction Limit Alternates a##CON##o
Culvert CULt###
Ditch DITt###o
Driveway DRtssssso
Electric Line ELEt###o
Gas Line GASt###o
Right of Way RWrddd##o
River / Stream RIVt###
Sanitary SANt###o
Storm Sewer STMt###o
Telecommunication TELt###o
Water Line WATt###o
where:
a = Alternate A, B, C, . . .
t = Type, X (Existing) or P (Proposed)
o = Side, if applicable, L (Left) or R (Right)
sssss = Station or Drive Name
10+23.45 would be 01023
100+25.67 would be 10026
## = 2 digit number maximum 01, 02, . . .
### = 3 digit number maximum 01, 100, etc.
r = Route Type
C = County Road
I = Interstate Route
R = Ramp
S = State Route
T = Township Road
U = U.S. Route
ddd = 3 digit route number 020, 270, 142, etc.
Notes: $ If the route type is unknown or the road is a
local street, the rddd code should be
replaced with the first four characters of the
street name.
$ If a profile is needed for the above
elements, name the profile the same as the
corresponding chain including the chain’s
number.
COGO Spirals and Curve Elements
Alternates Curve a##trddd%%
Alternates Spiral a##trddd%%l
Curve trddd%%pi+
Spiral trddd%%pi+l
where:
a = Alternate A, B, C, . . .
t = Type, X (Existing) or P (Proposed)
l = Location, if applicable, A (Ahead) or B
(Back)
pi+ = 2-3 digit PI number 01, 100, etc. if known
= 2-3 digit number in order of creation
## = 2 digit number maximum 01, 02, . . .
r = Route Type
C = County Road
I = Interstate Route
R = Ramp
S = State Route
T = Township Road
U = U.S. Route
ddd = 3 digit route number 020, 270, 142, etc.
%% = 1-2 digit Ramp number A, 2S, 3A, etc.
Notes: If the route type is unknown or the road is a
local street, the rddd code should be
replaced with the first four characters of the
street name.
84 ODOT CADD Engineering Standards