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Re: Shading Concrete in CAD Detail

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Rich,

Use a solid hatch the same as you have always done but with a shaded pen
weight.  Most printers today are capable of various "grayscale" shading.  We
use a gray base color (254 on the HP) set to a 10 to 15 percent shade in the
plotter / pen config.  Plots and photocopies very nicely and I still get the
familiar effect.

We use a similar technique for new versus existing when we are working with
modifications to an existing structure.  Set all the existing in a lighter
grayscale and the new elements really stand out and read clearly.  We do
this for both plans and details, and it takes a lot of the guess work out of
re-construction.


Paul Feather PE, SE
pfeather(--nospam--at)SE-Solutions.net
www.SE-Solutions.net
----- Original Message -----
From: "richard lewis" <rlewistx(--nospam--at)juno.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, April 30, 2003 8:02 AM
Subject: Shading Concrete in CAD Detail


> I would like to ask about what your office standard practice is to shade
> or hatch concrete in a section or detail.
>
> About 15 years ago, when drafting was done manually, the draftsmen at the
> company I worked for used a sticky-back type shading material to shade
> new concrete that was cut through in a section.  This was applied to the
> back side of the mylar at the detail.  This emphasized the area of
> concrete that was sliced in section verses what was beyond the slice and
> not cut.  As CAD work progressed they started using solids and then solid
> hatching to shade the section so it plotted out and when printed it would
> have a shaded down fill.  With pen styles in AutoCAD 2000 this helped
> immensely and very good details with shaded concrete could be produced
> and printed.
>
> Now, most printers are using photocopy technology instead of the
> blue-line paper from the ammonia process.  It comes out black and looks
> nice, EXCEPT, what shaded nice in a blueprint now looks terrible as a
> photocopy.  What are you doing, if anything, to hatch your details.  I
> prefer not to use the concrete hatch symbol if possible.  My tradition
> has been to shade new concrete and use the standard hatch symbol for
> existing concrete.
>
> Some of you may not know what I am talking about and need to ask your
> draftsman.
>
> Thanks.
>
> Rich
>
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