yang686526

drawing rev varies, sheet by sheet
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?
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are all of the sheets at the same revision, just denoting what revisions occured on each sheet?
"i" should not be used as a revision.
i've seen rev by sheet before. as long as everyone understands i don't see a big problem with it.
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.
it is standard practice for military dwgs. but, "i" should not be used, they know it.
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
i agree with chris. i saw this all the time at the big l and yes the first sheet should denote the different rev'd sheets.
best regards,
heckler
sr. mechanical engineer
sw2005 sp 5.0 & pro/e 2001
dell precision 370
p4 3.6 ghz, 1gb ram
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nvidia quadro fx 1400
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"coming together is a beginning, staying together is progress, and working together is success." - henry ford

i agree with ctopher and heckler, except the first sheet is always at the latest revision because it will always change with each revision (the revision table on sheet one has to be updated every time).
rev "i"??? what a rookie mistake!
don't feel bad, i have to put up with a "boss" who thinks that "i" and "o" are acceptable rev's.
yikes!! or should i say yjkes!!
i have never worked for a compnay which has not had a "rev-by-sheet" system. none of them had a sheet 1 index, but one did have a seperate rev sheet which detailed the changes & only the title blocks rev number changed. none of them were military.
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.
my last job did both ways as cbl described. the correct way is to have a rev table on the first sht showing all sheet revs, and a rev block at top-right corner showing doc rev.
chris
systems analyst, i.s.
solidworks/pdmworks 05
autocad 06
hmmm, in my neck of the woods different rev. number per sheet is common. the only time a package goes out with the some rev. number is rev. "0"(zero) "issued for construction". then each sheet becomes a separate entity and only when something changes on that sheet is the rev. number changed. why bother to change multiple sheet rev.s if no change on the drawing occurred? seems to be a waste of time, money and effort!!? but i'm only looking at it thru a piping discipline. the only time "we" have alphabetical rev.s are "in-house"(pre-issue for construction) and only numerical rev.s after rev. 0 issued for construction. and we don鈥檛 use rev. 鈥淚 or o鈥?either.
"if good work is not recognized, poor work will follow"!
using rev 0 is the same as using rev o, you don't use it.
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