Color coding markups on engineering drawings.

[jschwa01]

thread1103-183436

I came accross this previous thread. I have been designing for over 30 years in the communications and aerospace industries. The color coding of drawings has been designed for specific reasons, some of which have gone away. The old copy machines, blue prints and sepia.

1. Yellow highlighter used for delete. Used so that you can still see what was there
even when duplicated.
2. Red pencil or pen for additions.
3. Green for items checked and verified.
4. Blue for notes and questions. This was a special pencil used so that when the drawing
was duplicate on a xerox machine it didn't show up.

Also, if you made a mistake you wrote STET next the item. Itment "let is stand".

 

[fsincox]

Yellow was "reviewed and confirmed" in my day.

 

[ctopher]

I agree with the yellow being "reviewed and confirmed".
If we wanted it deleted, we drew a line thru it, or made a note next to it.

Chris
SolidWorks 11
ctopher's home
SolidWorks Legion

 

[drawoh]

jschwa01,

I use whatever highlighter I can get my hands on to show that I have done whatever it is I intended to do with the information.

Is a formal standard actually required for this?

--
JHG

 

[jschwa01]

Drawoh,

It was always required. We use to have drafting departments and drawings needed a standard for markups. Drawings were sent to us from various sources and with a standard there was no confusion on the markups. I learned it from draftsman who were doing work since the 50's. I started in the late 70's.
I believe in the KISS method. Keep It Simple Stupid.

 

[fsincox]

Delete and/or added was marked in red.

 

[MechNorth]

For the most part, I rarely dealt with checkers ... except those times when I was the checker. I'm "post-blueprint", but done my share with marked-up scans and of course b&w prints. Never dealt with color-coding standards except "red" for corrections/deletions as noted. Generally used yellow hiliter as "ok". Orange was mostly for "issues" and "challenges" to put it politely. In reality, though, I used whatever materials I had at hand when I had to check something, and made sure that I annotated things adequately that they knew what was expected.

Jim Sykes, P.Eng, GDTP-S
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