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Numbering and Revising Multisheet Drawings Question
2

Numbering and Revising Multisheet Drawings Question

Numbering and Revising Multisheet Drawings Question

(OP)
There is a difference of opinion in our company regarding the numbering and revising of multisheet drawings. The current company standard is to put Sheet 1 of X on the first sheet and then number the following sheets as Sheet 2, Sheet 3, etc. If one or more sheets of a multisheet drawing are revised, only the revised sheets are "reved up", not all sheets.

Our company acquired an electronic controls manufacturer who wants the drawings to have the Sheet X of X on every sheet and when any sheet within the multisheet drawing is revised, they want all sheets to be "reved up" to the same rev level which they say is an "industry standard".

Does anyone have some input on this? My background is mechanical and I am not familiar with the electronic controls industry.

RE: Numbering and Revising Multisheet Drawings Question

Ask them which standard they are referring to.
I have seen revisions done both ways, though very rarely see separate revisions on drawing sheets.  A drawing is usually considered "one" item, with every sheet reflecting the revision level of the entirety.  This is also often driven by the CAD package and PLM (if any) systems used.
As to the "SH X of X" on every sheet issue, I have also seen that done both ways.  If memory serves, it was DOD-STD-100 that drove having the total only on the first sheet method, but I rarely see it used today.

"Good to know you got shoes to wear when you find the floor." - Robert Hunter
 

RE: Numbering and Revising Multisheet Drawings Question

2
I have seen it both ways, I do not know if there is a "industry standard" for what is used. Ask them for a reference to a standard. In any case company standards trump industry standards for the most part.

Both of our clients use the following:

Sheet 1 has "SHEET 1 OF X" where "X" is the number of sheets. There is a block on the sheet with all the sheet numbers and their revisions shown (called "REVISION STATUS OF SHEETS"). Sheet 1 allways gets revised if only to state "REV STATUS OF SHEET 2 AND 4 CHANGED".

All other sheets just state their sheet number. They are revised only if there is a change to that sheet.

Your practice is probably similar.

Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net

RE: Numbering and Revising Multisheet Drawings Question

ASME Y14.35M-1997- REVISION OF ENGINEERING DRAWINGS AND ASSOCIATED DOCUMENTS is the standard for drawing revisions. Both methods are shown.

Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net

RE: Numbering and Revising Multisheet Drawings Question

There you go!
Now, about those sheet numbers...
winky smile

"Good to know you got shoes to wear when you find the floor." - Robert Hunter
 

RE: Numbering and Revising Multisheet Drawings Question

The first method you currently do was mandated by govt in the UK for govt contracts - or at least the ones I worked on.  This also had a 'drawing list' for each major assy/sell-able item or the like which listed the revs of the drawings & if appropriate the rev of sheets of the drawing.

How well some CAD/PDM/ERP or similar systems can manage this is another matter.

Posting guidelines FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm? (probably not aimed specifically at you)
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?

RE: Numbering and Revising Multisheet Drawings Question

Revising each sheet separately doesn't make as much sense these days as it used to for many industries, though I can see where it would be useful for some.  It used to be easier to just revise one sheet back in the pencil and board days.  Nowadays with CAD and custom properties and Product Data/Lifecycle Management applications, it seems like it would be easier to maintain one rev for all sheets.  If separate revisions are necessary, then perhaps there needs to be separate drawings (assuming that we are talking about assemblies)?

Matt Lorono
Lorono's SolidWorks Resources & SolidWorks Legion

&

RE: Numbering and Revising Multisheet Drawings Question

"...which they say is an "industry standard"."
Note the "an" ... not "the".  It is one of several 'industry standards'.

Who acquired who? Usually the acquirer tells the acquired how things will be.

borg  "Resistance is futile, you will be assimilated, you will comply"  borg2

RE: Numbering and Revising Multisheet Drawings Question

My thoughts also, CBL.  Hopefully the acquirer will keep the best and forget the rest.

"Good to know you got shoes to wear when you find the floor." - Robert Hunter
 

RE: Numbering and Revising Multisheet Drawings Question

Also check out "ASME Y14.1 Decimal Inch Drawing Sheet Size and Format". I think Sheet 1 of X is acceptable, I prefer it.

ALso "ASME_Y14.35M_Revision of Eng Dwgs and Associated Documents".

Chris
SolidWorks 09 SP5.0
ctopher's home
SolidWorks Legion

RE: Numbering and Revising Multisheet Drawings Question

Having multiple rev levels on different sheets is a hopelessly complicated system.  I'm not surprised the UK government specifies this, was that part of the Department of Redundancy Department?

We put sheet N of X on every sheet and all sheets have one rev level.  That way, if you only have one sheet you can find the complete drawing package.  

The other way may be acceptable, it doesn't make it smart.

RE: Numbering and Revising Multisheet Drawings Question

The UK govt system specified it in part because a lot of the drawings were not on CAD but hard copy drawings where it's a much better system than having to needlessly revise sheet after sheet of drawings with no changes.

Nothing hopelessly complicated about it in the right application.

Like wise only having sheet no. and not sheet "x of y" also makes a lot of sense for hard copy drawings.

(Oh, and before you make a smart comment about the UK still being on hard-copy - so were many of the American drawings I dealt with in that job.)

Posting guidelines FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm? (probably not aimed specifically at you)
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?

RE: Numbering and Revising Multisheet Drawings Question

I've seen and used both methods.  A star to Peter for the ref.

RE: Numbering and Revising Multisheet Drawings Question

My last company did the individual sheet revision thing. In an AutoCad environment where we had one file per sheet, that made sense. But in Pro/E with all sheets in one file, the still did it. When we put in PDMLink, I said no, the whole file is revised, so all sheets are revised. It took some work,but they did eventually agree.
 

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

RE: Numbering and Revising Multisheet Drawings Question

I just realized I added the same spec as Peter. Sorry Peter.

Chris
SolidWorks 09 SP5.0
ctopher's home
SolidWorks Legion

RE: Numbering and Revising Multisheet Drawings Question

A little off-topic, but still within view of the path being traveled...

In the case where all sheets of a drawing are kept at the same revision number/letter, does the revision note get written out completely on all the drawings?

Say I have a drawing consisting of 4 sheets, and in one view on sheet 2 somebody typed in a dimension incorrectly. So on sheet 2 I put a revision stating "Dimension was 3.155, now 3.511" or something. Would I put that same revision note on pages 1, 3, and 4? Or on those sheets, would I just update the number without any indication of what was changed? Or on the non-affected sheets, would I make the revision note say "Revision to sheet 2".

In some programs where all the sheets are tied to a single file, it may be easiest to have all the sheets have the complete revision note in the title block. However, we are using AutoCad, so each sheet is a different file and the updates need to occur independently.

Another thought, maybe I'm wrong altogether here... Do people normally have a "revision table" with the note explaining what was revised on EVERY sheet, or is a different sheet format used that only has the location for revision notes on the top sheet? I think that would probably make the most sense if all sheets in the drawing are kept at the same revision number/letter.

Anybody care to clarify how they do or have seen this method applied?

-- MechEng2005

RE: Numbering and Revising Multisheet Drawings Question

For the case where all sheets are one rev, only one table is necessary.  It can be on a cover sheet or just 1 of X.  In the description column, just put a full detail of where the chg happens like "Sheet 2: .25 was .30".  If you are using a zone column in your rev block, that's all you'd need.

Matt Lorono
Lorono's SolidWorks Resources & SolidWorks Legion

&

RE: Numbering and Revising Multisheet Drawings Question

To follow up on the zone column...it's fairly common to place the sheet number with the zone in that column.

Matt Lorono
Lorono's SolidWorks Resources & SolidWorks Legion

&

RE: Numbering and Revising Multisheet Drawings Question

What FCsuper said is not uncommon.  But often I find I didn't leave room on my first sheet for a humoungous revision table, and will abbreviate unaffected sheets with verbage along the lines of "see sheet 2 and 3", etc.  We also have started placing "delta" symbols alongside changed dimensions and callouts to help clarify (or confuse) things.

RE: Numbering and Revising Multisheet Drawings Question

To simplify even more, on sheets other than the first state "SEE SH 1" in the revision block; on sheet one state "SEE ECN XXXXX" (or equivalent).  We have used this method for years without any problems.  If details of the change are required, the ECN is then referenced.

"Good to know you got shoes to wear when you find the floor." - Robert Hunter
 

RE: Numbering and Revising Multisheet Drawings Question

Even smarter, good point ewh.   

RE: Numbering and Revising Multisheet Drawings Question

Pro/E allows you to set up 2 sheet templates. One for the first sheet and the other for the following sheets. This way you can have the full titleblock on sheet 1 and a minimal on subsequent sheets per Y14.2, I think.

We would but "No Change on this Sheet" on sheet that did not chnage.

Another note we used was "Sheet added at this rev".
 

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

RE: Numbering and Revising Multisheet Drawings Question

Our drawing formats were re-drawn a few years back to closely follow asme stds.

They only have a rev history block on the 'sheet 1' format, the continuation sheets don't have a rev history block, just the current rev.

This is in a system that has all sheets at the same rev.

I think the UK system I worked had the same format for all sheets with rev history on all sheets BUT only teh ECO # was given, no details.

Posting guidelines FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm? (probably not aimed specifically at you)
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?

RE: Numbering and Revising Multisheet Drawings Question

I still haven't figured out how to quote other posts on here besides a whole bunch of cutting and pasting, which on mobile is cumbersome.

So, I'll add my 2 cents as follows:

It makes logical sense to have "Sheet X of Y" on each sheet, that way you can tell which sheet came from where when you're working on a large desk and everything gets all jumbled up for some reason.

Revision control is done on Sheet 1 of Y. You can link a "rev cell" on each subsequent sheet to the main rev on sheet 1, and it'll take care of all of it. I do agree that controlling the revision level of all sheets separately is too cumbersome to be practical.

Also, typically in my multi-sheet prints, I'm referencing some kind of large assembly or complicated part with many views. In either case, the title block should be reflecting the same part number across each sheet... so, revision control in then intuitively common. If you change a part on sheet 3, it'll affect sheet 1 since that's the main view of your part / assembly. The revision block on sheet one should say "changed widget, sheet 3" and there you go.

Maybe that's my method and it doesn't make sense for others... but, that's how I handle multi-sheet prints and rev control of them.

 

RE: Numbering and Revising Multisheet Drawings Question

I think the original intent was to avoid having to physically change every sheet when the only change was the addition or subtraction of sheets.  This makes sense in a manual world, but seems to lose importance in our electronic one.

"Good to know you got shoes to wear when you find the floor." - Robert Hunter
 

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