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BL Companies
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File Management & CADD Standards Manual
File Identifiers
BD
Border Xref.
DI
Digitized Xref.
XA
Architectural Xref.
XD
Existing Plan Xref. (Demo)
XE
Lighting and Electrical Xref.
XF
Fire Protection Xref.
XM
Mechanical Xref.
XO
Xref by others (ALL Disc.)
XP
Plumbing Xref.
XS
Structural Xref.
XA 14C1234 ‐ 101 .dwg
File Identifier
Drawing Number
Job Number
XA15C1234‐101.dwg
EXAMPLE
→
Xref Filenaming
+ FILENAMING
(CONT.)
Job Number
The inclusion of the Job Number not only identifies
the project, but it also helps to maintain file individu-
ality so no two files are named the same on the serv-
er. Use the entire Job Number.
Drawing Numbers
Section 2
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