We keep hardcopies of all drawings, including revisions as well as correspondence. In addition, we keep digital copies of all documents (including *.pdf's made of documents).
Typical file number for drawings is yynnnt01.dwm, where yy is the year, nnn is the 3 digit project number, t is the discipline (A, S, M, etc.) and m is the revision number (0-9) as well as *.dwg which is the current AutoCAD drawing. Drawing numbering differs substantially from the 'standard' and we use it for consistency with earlier projects.
For documents other than drawings we have a fairly elaborate nameing system depending on the type of correspondence. For example 03-128e.r04.doc would be project 03-128, an engineering report, number 4 in sequence (preceeded by 1-3); correspondence 03-128.l08.doc would be the same project but would be a letter (l), the 8th in a sequence... 03128s03.dw2 would be the second revision to structural drawing s03 for project 03-128... and so forth... as below for correspondence types...
CORRESPONDENCE EXTENSIONS
ADDENDA filename.Ann
ASCII TEXT filename.Tnn
ARCHITECTURAL REPORTS filenameA.Rnn
BID FORM filename.TSn
CERTIFICATE OF PAYMENTS filenameC.Cnn
SUBSTANTIAL COMPLETION filenameC.SC1
CHANGE ORDERS filename.Onn
CONCRETE TESTS filenameCT.Rnn
CONFERENCE REPORTS filenameC.Rnn
AGENDA filenameC.Ann
CCO'S filename.Cnn
DOCUMENTS filename.Dnn
ENGINEERING REPORTS filenameE.Rnn
EXCEL SPREADSHEETS
ESTIMATES filenameX.Enn
CO SUMMARY filenameX.Cnn
CA SUMMARY filenameX.Ann
TENDER SUMMARY filenameX.Tnn
ESWO filename.Enn
FEE PROPOSALS filename.Fnn
INVOICES filename.Inn
JOB SITE INSTRUCTIONS filename.Jnn
LETTERS filename.Lnn
MATHCAD DESIGN FILES fnameDnn.MCD
MEMORANDA filename.Mnn
OWNER CONTRACT filename.OC
PROJECT MEETING REPORTS filenameM.Rnn
PHOTO COLLECTION filename.PHn
PHOTOGRAPHS fnamePnn.TIF
fnamePnn.JPG
REPORT filenameR.Rnn
REPORT SUMMARY filenameS.Rnn
SCANNED IMAGES fnameSnn.TIF
fnameSnn.JPG
SCHEDULES filenameS.Nnn
SHORT FORM CONTRACT filename.GCn
SITE VISIT REPORTS filenameE.Rnn
STATEMENTS filename.Snn
TENDER DOCUMENTS filenameT.Tnn
where filename has the format yy-num, and
fname has the format yynum