Dates as per ASME Y14.100-2004 2

[aardvarkdw]

Had anyone else not relaized that as per ASME Y14.100-2004 para 4.28, dates on drawings are to be written Year-Month- Day rather than Month-Day-Year? I have always written dates Month-Day-Year, am I the only one?

 

[drawoh]

MechNorth,

As I noted above, the ISO date format sorts nicely on a computer. I have taken advantage of this several times.

Given the ambiguiuty of the European and American systems, and the number of people who do not know the difference, a proposed new date format should be visibly different from the existing ones. YYYY/MM/DD accomplishes this nicely.

I do not find ISO to be at all inscrutable on this one. It makes a whole lot of sense, and there is no need to make excuses for them.

JHG

 

[aardvarkdw]

Those that have used this system of dating, have you had any problems with vendors or other companies misinterpreting you? The arguments for doing it make sense, but I'm concerned that we will run into problems with other companies.

 

[drawoh]

aardvarkdw,

I have had no complaints about this style of dating. On the other hand, I have had few situations where people absolutely had to understand my dates.

Also, I write out the month in text, whenever possible. The text strings "2006" "Aug" and "14" can be written out in any order and they will make sense to a person who reads english.

JHG

 

[CorBlimeyLimey]

I have used this system for more years than I care to remember and have never had a problem. I refuse to sign any document which uses an all numerical date other than YYYY-MM-DD.

Providing the year is shown with all 4 digits, there should be no misinterpretation. I have yet to see any document or correspondence (official or otherwise) using a YYYY-DD-MM notation.


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[MechNorth]

I'm in Canada, where the date format is officially YYYY/MM/DD, but because our industries are so tied in with US industries, we get a mixture of all sorts of units up here (though I see that more US companies are switching to metric on a regular basis). To avoid the problem, I always make sure that I include "(YYYY/MM/DD)" under the column in the title or revision block, and use the full month name in any non-drawing documents.

Drawoh, I wasn't making excuses for the ISO committee that standardized this date format, I was supporting them. Not everyone can, or will, see the logic of a standardization committee's decision and will therefore prematurely rule it silly, pointless, or just outright incorrect because it isn't what they're used to. Logic is never simple, and rarely the same between people. You might have seen this in the migration from board-drafting to computer 2-D to 3-D Solid modelling, or from traditional linear tolerancing to GD&T... inevitably somebody can't or won't wrap their head around it despite the logic behind the migration being obvious to seemingly everyone else. I was also trying to compliment the actions of standards development organizations; the participants indirectly take a lot of abuse by people who aren't involved. While the committee's logic may not be readily apparent to all, they have at least established a path that we can all walk without having to blaze a new trail every time we step onto it.
It can be quite intellectually and personally satisfying to help develop standards that become widely implemented; everyone should give it a try some time.



Jim Sykes, P.Eng, GDTP-S
Profile Services
CAD-Documentation-GD&T-Product Development

http://www.profileservices.ca

 

[ctopher]

I like the date shown here (upper-right corner) of this post. Is clear to me.

Chris
Systems Analyst, I.S.
SolidWorks 06 4.1/PDMWorks 06
AutoCAD 06
ctopher's home (updated 06-21-06)

 

[KENAT]

The y14.100/metric date makes a lot of sense for a number of reasons. Unfortunately it's not what most of us are used to.

Spelling out the month or indicating the date format can be good in some situations but not all.

I guess if you reference Y14.100 on your drawing and put the date in the format described there in there can be no argument.

 

[fcsuper]

"YYYY/MM/DD accomplishes this nicely"

At least until someone starts useing "YYYY/DD/MM"

 

[KENAT]

Thats why you say somewhere something like "DRAWING IN ACCORDANCE WITH ASME Y14.100" on the drawing