Re: New at PipingDesign.com: 01 June 2001

<a href="http://www.pipingdesign.com/stuff/vessel1.GIF">http://www.pipingdesign.com/stuff/vessel1.GIF</a>

and

<a href="http://www.pipingdesign.com/stuff/vessel2.GIF">http://www.pipingdesign.com/stuff/vessel2.GIF</a>

I just threw them into the scanner without image optimization, so they are big files.

Paul

• Original Message ----- From: Christopher Wright

> >Does anyone remember why an engineering drawing of a vessel
should
> >always be dimensioned from the theoretical tangent line of a
2:1
> >semi-elliptical head and *not* from the weld seam?

> I always heard that you should dimension from a recoverable
feature like
> a line--weld joints tend to get smeared out because they're not
a line.
> It seems like a somewhat bigger pain in the ass dimensioning
from
> tangents because you need to know the actual straight flange
length in
> order to lay out the vessel shell to give you the proper overall
length. Received on Fri Jun 01 20:50:00 2001