On 10/07/2010 03:17 AM, Ganeshram Iyer wrote:
> Some brief comments on my knowledge of drafting standards: I work for
> a company that develops software to help convert 2D drawings to 3D
> models and our Modelers have never used the ISO 128. I do have access
> to a few ISO documents (I recently wrote a paper on the STEP AP203
> Edition 2), but 128 is not one of them. We turn out thousands of 3D
> models and 2D drawings over the year and work with numerous clients,
> and in our experience no one has requested we use the standard or even
> refer to it.
Interesting. It may be that this is one of those situations where a
sort of consensus "de-facto" layout has grown up over the years. FWIW,
Pro/E does mention "international standards" and references ISO here:
http://www.ptc.com/WCMS/files/45691/en/4307_FoundationXE_DS.pdf
I suppose the other ASME and JIS standards they mention are probably
something along these lines:
http://engineers.ihs.com/collections/asme/engineering-drawings-standards.htm
http://webstore.ansi.org/FindStandards.aspx?Action=displaydept&DeptID=2000
Digging around to see what literature on drafting is referencing, these
also pop up:
http://www.buildingsmartalliance.org/index.php/ncs (fairly specific to
buildings, apparently)
(among building specific stuff is also
http://cic.nist.gov/vrml/cis2.html#IFC and
http://ciks.cbt.nist.gov/cgi-bin/ctv/ifa_request.cgi, although I don't
know if they're particularly relevant either to this topic or even to
BRL-CAD - most other open tools in the IFC domain are either GPL
(BiMserver) or non-commercial (Open IFC tools))
Here's a document related to NCS (and given it's at an army.mil addy we
might want to check it out) ;-) (this one us also particularly
interesting in that I was able to download it from home) - it's over 400
pages and may have some useful content, although I expect a lot if it
will probably be NCS/building specific:
https://cadbim.usace.army.mil/CAD
> The one standard that is gaining popularity with CAD systems and among
> some of our clients is the concept of Model-Based-Enterprise (or as
> Pro/Engineer is calling it Model-Based-Design). The basic idea, just
> in case this is not common knowledge, is to incorporate into the 3D
> model the various elements that are typically found in the 2D draft
> (e.g. notes, dimensions, views). I haven't researched into MBD enough
> to tell if it could be useful in my current project, but was wondering
> if any of the developers have any experience with it?
Sounds like the kind of thing we want to do with our proposed annotation
primitive...
Cheers,
CY
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