CADD Engineering Standards - Ohio Department of Transportation

304.3 File Name Format
January 18, 2013
ODOT has defined the following naming convention to be used on all design files submitted to, or
exchanged with the Department.
It is not permissible to use special characters (i.e. @, #, -, >, +, %, etc.) in file names.
Standard Plan Insert sheets shall retain the name designated by the issuing office.
Standard Design File Naming Format
nnnnnaa###.dgn
nnnnn = Five (5) digit PID Number
aa = Two (2) letter code identifying the plan sheet type
###
(see Figure 304-1 File Name Type Codes)
= Three (3) digit number identifying the number of drawings of
the same type. The three digit number is required even if
there is only one drawing of a particular type in the plan set.
Examples:
12345BE001.dgn
12345GP005.dgn
Bridge Design File Naming Format
rrr_nnnnsaa###.dgn
rrr = Three (3) digit route number
nnnn = Four (4) digit SLM of the structure without the decimal point.
s = One (1) digit code (For twin structures: L for Left, R for Right. C for
collector/distributor roads or twin structures combined in the same
directory, P for Ramps.)
aa = Two (2) digit Bridge plan sheet type
###
(see Figure 304-1 File Name Type Codes)
= Three (3) digit number identifying the number of drawings of
the same type. The three digit number is required even if
there is only one drawing of a particular type in the plan set.
Examples:
071_0546LPI002.dgn
071_0546RSP001.dgn
Wall Design File Naming Format
nnnnn_yyyaa###.dgn
nnnnn = Five (5) digit PID Number
yyy = Three (3) digit wall number (three digits required and
maximum).
aa = Two (2) digit wall plan sheet type
###
(see Figure 304-1 File Name Type Codes)
= Three (3) digit number identifying the number of drawings of
the same type. The three digit number is required even if
there is only one drawing of a particular type in the plan set.
Examples:
12345_001WP005.dgn
12345_001WS001.dgn
ODOT CADD Engineering Standards 73