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RE: Level of Detailing - round 2

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The good old days.  If only the new engineers could sketch something
that you could read.

I was taught never to scale a drawing and enough dimensions should be
provided to build it without scaling.  On my plans I show the dimensions
as if I was going to build it.  I often ask the cad person if he/she
could build it from the dimensions shown on a hard copy.  If not add the
dimensions.  I have seen architectural and structural plans without a
single dimension.

Gary Loomis

-----Original Message-----
From: Ray Pixley [mailto:r_pixley(--nospam--at)msn.com] 
Sent: Monday, August 21, 2006 12:46 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: Level of Detailing - round 2


On Aug 20, 2006, at 3:15 PM, Daryl Richardson wrote:

>I'm sure that any of the older engineers on the list will be able to 
>confirm that the origin of the practice of not scaling drawings
originated 
>from the fact that the liquid based printing processes of the 1950s and

>1960s stretched the paper when printing.

Paper stretching is the least problem.  I've seen draftmen who can draw
a 
straight line freehand draft drawings with just a sharp pencil (no
scale, no 
triangles, no t-square, etc.) that looked like they were perfectly drawn
to 
scale with such equipment.  How do you deal with that?



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