Left hand vs. Right hand

[3DDave]

According to the ASME web page ASME Y14.5.1-2019:

"This standard presents a mathematical definition of geometrical dimensioning and tolerancing consistent with the principles and practices of ASME Y14.5–2009, enabling determination of actual values."

Is it actually a full version out of date or is the ASME Website in error?

 

[pmarc]

The math standard to support Y14.5M-1994 is Y14.5.1M-1994.

The math standard to support Y14.5-2009 is Y14.5.1-2019.

The math standard to support Y14.5-2018 is under preparation.

 

[3DDave]

I'll just say, I'm not angry, just disappointed.

Don't the Dimensioning and Tolerancing standards have many of the same members and shouldn't the flow only be

Y14.5 -> Y14.5.1->Y14.45/GDTP exam/Y14.41/ et al. -> Y4.5 newer -> Y14.5.1 newer -> ...

But when they are released out of order, with newer versions skipped, and with fundamental definitions/concepts that are not in the superior ones in the hierarchy it seems disjointed.

It seems like there should be a core-concepts group that synchronizes all of them to be released simultaneously and, since they are all based on the same core-concepts, the overall effort should be far easier.

 

[pmarc]

I think everyone would like it to work as you described.

Unfortunately, the realities of Y14 and its subcommittees are far from the ideal on many layers and due to many different reasons.

 

[axym]

3DDave,

I agree with pmarc's comments. We all wish that the release schedule could be more ordered, but synchronizing the output of the various subcommittees is easier said than done. These are groups of volunteers, most of which who do committee work in addition to trying to make a living ;^).

There are many people who serve on more than one subcommittee, and that helps the coordination but only to a certain degree. As vice-chair of both Y14.5.1 and Y14.45, I tried to at least make sure that the technical content of these two standards is consistent (this was a big challenge in itself). The release schedule of any given standard involves input from many other ASME people outside of the technical subcommittee for that standard.

I can see that because Y14.5.1-2019 supports Y14.5-2009 and not Y14.5-2018, it gives the impression that the newer version was skipped. I wish that we would have been able to release the latest version of Y14.5.1 before the latest version of Y14.5 came out. But this didn't happen, as pmarc said, for many different reasons.

Evan Janeshewski

Axymetrix Quality Engineering Inc.

http://www.axymetrix.ca

 

[3DDave]

I realize that I should increase participation with the process rather than pitching stones - but I added it up. It would cost about $30,000 per release for me to meaningfully participate, and it would not guarantee any desired outcome as there are many others with individual agendas that certainly appear to be out of alignment. So it's pebbles on the windows.

If it's tax deductible as a business expense or I had an employer willing to foot the bill to get their name into the standard as a supporter/advertisement that would make some sense. As neither apply I have negative economic interest in doing so.

The fiction is that the meetings are open and free; the fact is the travel costs, the lodging costs, potential loss of income during the meetings is significant.

When I hear that ASME interferes with that process - that's sickening. I don't care to look up the number of committee members, but I expect that pushes the volunteer contributions into near million dollar range per release, with little of that spent on making the standard better, just a friction cost.