【转帖】certified drawing

yang686526

certified drawing
does anyone have any familiarity with "certified drawings".  is there a standard that defines these types of drawings.  i've done a search and haven't really found anything yet.  any info is welcome.
pete
check out our whitepaper library.
it sounds like the kind ofthing that would come from someone who wants to sound like they know what they are talking about but don't.
perhaps drawings w/ pe seal?
its a bit of a legacy thing where i work and something customers of ours request.  i don't know the history of it.  i don't know if its industry specific.  kind of agree with your statement...
pete
if it's a dwg for civil/arch or mech/nuclear, then yes a pe signature per tick's suggestion.
it is the only type of "certified" dwgs i know of.
chris
solidworks 07 3.0/pdmworks 07
autocad 06
certified drawing can mean a lot of things, depending on the context.  it's not a very common term these days in my own experience.  i think i ran across one customer that required it one time, some 15 years ago.
i work with "certificated" dwg.s alot! it is normally a vendor drawing of a piece of equipment and the certification is a grantee that the equipment to be shipped is fabricated exactly like the drawing. case in point, when we need a pump we asked for certified dwg.s so we can design the foundation. and in some cases build the foundation to accept the pump before we actually have the pump in hand. so when we do get the pump we can expect to drop it in place with no problems! but if we do experience problems because of any mis-representation, any "fix" we have to do is paid for by the vendor! hence the need for certified dwgs. on large expensive equipment. my $0.02 anyway.   ...mark
11echo,  as stated, certified drawings is a term that can mean different things.    it would seem that the use you described is related to po clarification.  you don't really need the certification from the vendor in order to not be responsible for errors in the product as long as there is a clearly stated po.
matt
cad engineer/ecn analyst
silicon valley, ca
i think "certified" means having people with the propper credentials sign off where needed.
fcsuper  ...well i don't do the purchasing too on projects, i normally do the design, compile material lists, and a bit of construction coordination. as i stated the term "certified dwg.s" is a request to the vendor that we want dwg.s we can build to, without physically having the equipment in hand, to be able to verify physical dimensions. this is pretty standard in my discipline and location.
yes i agree that the term "certified dwg.s" can mean other things to other disciplines, i'm only sharing what the term means to my discipline. and this happens a lot on larger projects, especially these days!
11echo,
   just wondering - is it ever stated anywhere on purchase agreements exactly what "certified drawing" means, or is it more of an unspoken thing?  the problem i may have is that when people use the term "certified drawing" they have a different idea of what it may mean when compared to someone else in the transaction.  over time, any proper understanding of what a "certified drawing" really is just goes down the drain.  people end up walking around saying "certified drawing", "certified drawing" without a proper understanding of what it really is and what it means to all parties involved.  i can't find a spec that defines what it is, and i'm not sure that it shows up on purchase agreements as far as what a "certified drawing" is.  this whole nebulous definition is not in the best interest of anyone involved in the process, from customer to client.  without a proper definition of what this document serves, then under litigation who is decide when people just say "well i thought a "certified drawing" meant this... and the next guys says he thought it meant something different.  how is it supposed to be decided what it is, if it is never pre-determined in the first place.  that is somewhere i don't want to go, but sometimes customers insist they need a "certified drawing", when i am not sure anyone involved has the right undertanding.  clearly we don't want to turn down business and just as more clearly we don't want to leave ourselves in a pre-carious position if things weren't well defined.  does anyone else see the problems with this, or i am just weird?
pete
pete,
you aren't weird.   the po is the legal agreement between the two parties. united states and other countries have very specific laws regarding the legality of po's.  
if the po isn't clear about a matter regarding the drawings, then having someone's signature on that drawing doesn't buy any protection.  however, if the po is clear, then having someone's signature on the drawing also doesn't buy any additional protection.  from my limited perspective, it's kinda an exercise in futility.
matt
cad engineer/ecn analyst
silicon valley, ca