Details of Revision Symbol Placement in regards to a Title Block - ASME Y14

[MToomey]

Hi folks,

I have been digging around in the forum and on google, but I haven't found a definitive answer to this question. I figure if I had this much trouble finding an answer, it might be worth getting this discussion going.

Is there somewhere in Y14 (likely in .35?) that forbids the placement of a revision symbol within the bounds of the title block?
Say we are changing the material of an item; we would update the material in the title block and note the change in the revision table, and then add a revision symbol to material field of the title block.
I would be tempted to say that a symbol is not necessary as the change of material is noted in the revision comments and the title block is the only location the material is identified, but our internal drafting standard calls for adding a symbol near any controlling information that has changed (reference dimensions do not need symbols for example).

Ultimately, the question comes down to whether it is acceptable to put revision symbols in the title block or if they should be near the border of the title block to note zone A1.

Thanks,
Matt

 

[ctopher]

I stopped using rev symbols years ago. Most don't know what it means, and it clutters the dwg.
But, I don't know a standard that limits to where the symbol can go. As far as I know it can go anywhere.

ctopher, CSWP
SolidWorks '17
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[dgallup]

We do it all the time. For example when the release status changes from PROTOTYPE to PRODUCTION or when the number of sheets changes. We put our change records in a separate document so it is helpful to have the symbols.

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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

 

[Tarator]

Most companies identify individual changes with a flag+index (even though they use the zone to refer to the item). For example, you rev'ed from A to B, and you have 10 items that changed. In your drawing, you would have B.1 to B.10 for each item that changed. That helps to track, especially for supervisors, managers, cost audit, etc. In addition, they are often referenced in the ECO document.

And if you happen to change the sheet size, scale, etc., you should be able to add a revision flag in the title block to identify the change(s) in the revision block.

Forgot to mention, it is also a good idea to color the latest revision level items so they pop out.

 

[ctopher]

Tarator,
I have never seen a company do it that way. I do believe you it's done that way somewhere.
All companies I have worked for/with indicate changes on the ECO, the ECO is ref on the rev block. It keeps clutter off the dwg, and most users of dwgs don't understand the flags anyway.

ctopher, CSWP
SolidWorks '17
ctophers home
SolidWorks Legion

 

[MToomey]

Good replies; thanks,everyone!
I could have sworn I read somewhere that revision symbols should not go in the title block, but it looks like I must have dreamed it.

Might have been in someone else's internal drafting standard while trolling the internet for answers one day.

Thanks again,
Matt