Drawing Revisions
Drawing Revisions
(OP)
Having not had to deal much with official type drawings with revisions, I was wondering if anyone had some procedure on how to note on drawings each revision, etc. I remember seeing older structural drawings and, if say, a change was made on Revision 3, then there would be a little triangle with "3" in it adjacent to the change. Then the revision text would indicate such the same. The reason I am asking is that I have a contractor who is issuing revisions on his construction drawings like crazy and doesn't note any of the revisions (he is responsible, not the consultant on these particular drawings). Ergo, need for a proven procedure. Thanks and






RE: Drawing Revisions
AND
note in the title block describing revision (there should be a few blank lines for this)
AND
often there is a "cloud" drawn around the revision so it's easy to see
Hg
RE: Drawing Revisions
RE: Drawing Revisions
I agree with the comments of both HgTX and SlideRuleEra, they both have noted practical comments. It is particularly important to note the changes both in the legend and on the print in the "cloud" as HgTX said, so each and every change can be tracked.
Years ago, the Contractor I was working for did an addition to a power plant. The contract was a "Unit Price" contract and there were 102 changes made, each with a new drawing and sometimes a spec. too. The only way we kept our sanity and were able to figure out the cost differeces was to keep the original drawings and add the new drawing to the top of the old, along with a log of the revision number, date, issue date and recieved date. We also computed the dollar change each time so we had an up to date running total. There were times when recieved a change just after having poured the prior change! Out came the "concrete eraser" and on we went.
I would also recommend that at each payrequest date a Change Order Summary be submitted to all parties. The tabulation should show the original contract, approved change orders to date, change orders authorized and started but not formally approved (this can be dangerous), change orders submitted but not reviewed or started yet, change orders submitted and rejected and finally changes requested but not priced yet. Only then are all the cards on the table.
Just some food for thought.
RE: Drawing Revisions
Hg
RE: Drawing Revisions
RE: Drawing Revisions
Engineers design, contractors build.
If the contractor is revising drawings - isn't this practicing engineering without a license?
RE: Drawing Revisions
RE: Drawing Revisions
RE: Drawing Revisions
By the way - came out in paper that things are afoot to license engineers over here. But no details about EIT, etc. - or just that anyone graduating from University engineering programme is an engineer.??.
RE: Drawing Revisions
We have always clouded the items to be changed for the specific revision and identified them with a revision triangle attached to the cloud. As mentioned above the reason for the revision is noted in the title block's revision block. On the next revision the old cloud and former revision number in the respective triangle(s) are erased and only the current changes are clouded and include their corresponding revision number next to them. For developing a system you may want to try searching the US Army Corps of Engineers Drafting Standards. They have a concise set of examples of when and where to revise drawings as well as many other drafting procedures. Most of their criteria is acceptable throughout the US corporate world and are helpful in commiunicating by drawing in a clear and concise manner.
If you need more info just let me know:)
RE: Drawing Revisions
Hg