drawing rev varies, sheet by sheet
drawing rev varies, sheet by sheet
(OP)
A big military contractor is supplying us a lube oil skid.
The 12 page drawing they have supplied has REV I (eye) in the corner of the title block on page (1), but other pages are REV H and J. Each page has its own rev history block, and the block on each page matches the rev letter in the title block.
No one denies it is confusing as heck, especially since page one offers no clue that other pages have higher revs. Is there any precedence for this?
The 12 page drawing they have supplied has REV I (eye) in the corner of the title block on page (1), but other pages are REV H and J. Each page has its own rev history block, and the block on each page matches the rev letter in the title block.
No one denies it is confusing as heck, especially since page one offers no clue that other pages have higher revs. Is there any precedence for this?





RE: drawing rev varies, sheet by sheet
"I" should not be used as a revision.
RE: drawing rev varies, sheet by sheet
The alternative is to revise 11 out of 12 pages with the only change being the revision letter when something changes on only one page. This wastes big money if you need design review of all revs and have controlled documentation distribution.
RE: drawing rev varies, sheet by sheet
Also, when revs are different on each sheet, there is suppose to be a table on the first sheet listing each sheets rev.
Chris
Systems Analyst, I.S.
SolidWorks/PDMWorks 05
AutoCAD 05
ctopher's home site (updated 06-21-05)
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RE: drawing rev varies, sheet by sheet
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RE: drawing rev varies, sheet by sheet
Rev "I"???
RE: drawing rev varies, sheet by sheet
Yikes!! Or should I say Yjkes!!
http://www.sprdesign.com
http://www.3dlogix.com
RE: drawing rev varies, sheet by sheet
The last company I worked for was building a machine for a company which used the "all-sheets-the-same-rev" system. The drawing package consisted of 60+ A0 sheets. I was receiving a set of revised drawings weekly for about 2 months. In most cases only a few parts were affected but the whole set had to be updated, printed & sent. I have never seen such a stupid, wasteful system.
Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
RE: drawing rev varies, sheet by sheet
Chris
Systems Analyst, I.S.
SolidWorks/PDMWorks 05
AutoCAD 06
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
RE: drawing rev varies, sheet by sheet
"IF good work is not recognized, poor work will follow"!
RE: drawing rev varies, sheet by sheet
Having a rev on each sheet is OK, just list them on a table on the first sheet. You don't change the rev if nothing changes on the dwg. All dwg's revs should match the revs of dwgs that are either in-house or go out. This is the same for ALL disciplines.
Chris
Systems Analyst, I.S.
SolidWorks/PDMWorks 05
AutoCAD 06
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
RE: drawing rev varies, sheet by sheet
Just goes to show that there are several legitimate ways to accomplish the same thing.
RE: drawing rev varies, sheet by sheet
Chris
Systems Analyst, I.S.
SolidWorks/PDMWorks 05
AutoCAD 06
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
RE: drawing rev varies, sheet by sheet
RE: drawing rev varies, sheet by sheet
RE: drawing rev varies, sheet by sheet
Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
RE: drawing rev varies, sheet by sheet
If you are using SolidWorks or Inventor and you are keeping separate revision numbers for each sheet, it is dead easy to revise stuff without documenting the fact. Even if you have separate drawing files attached to the same CAD models, you have a potential screw-up.
Your policy on sheet revisions must be based to some extent on your CAD management and your level of trust in the people who will get write access to the files.
JHG
RE: drawing rev varies, sheet by sheet
More important to me is the document control system which should put the right info in the right place at the right time...
As for the method I use - very lazy I'm afraid - drawing issue, number of sheets etc - In all cases - 'refer to sheet 1'
sean
RE: drawing rev varies, sheet by sheet
Too true, I should have given a better explanation.
In the company I currently work for our doc control system uses PDF format to store our .idw's. By doing things this way it makes the most sense to release all pages of our drawings in a single file. Because our templates automaticly update the rev to match page one it makes the most sense to rev the whole drawing at the same time. If I was using autocad and had multiple sheets by all means I would have a rev table on the first sheet and only rev the first sheet and only the others that needed changing. I am a firm believer in doing only as much to a released drawing as is nessesary to fix any problems.
I don't know of any standard for this. I believe that it is entirely up to the company that produces the drawing. I do know that I have seen it done both ways and I would have no problem with either way as long as the information and intention is CLEARLY shown.
RE: drawing rev varies, sheet by sheet
There are standards for this. It is not up to companies to do however they like, although most do anyway.
Companies that do design work should all have copies of the MIL, DOD, ASME & ANSI standards ... and follow them.
Chris
Systems Analyst, I.S.
SolidWorks/PDMWorks 05
AutoCAD 06
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716