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Re: copyright

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You may wish to issue drawings under a dwf extension.  In Autocad 14 or
higher the command is dwfout.  You can email the drawing and no one can
really edit it. has a free download for a program called whip4.0 (whatever the
latest version is) and it can view and print these documents only.  It has
been designed to work off of people's web browsers so that purchasing
autocad is not necessary.

Our competition down that street has developed a "stamp" program that can
somehow put a seal on a drawing and lock it so that you need a password to
copy or edit it.  I haven't seen it yet, just wild rumors.  I don't think
they have digitized the engineer's signature, so there is still the manual

In any event where there is a will to be fraudulent and steal there is a
way.  Best practice is to be as cautious as possible.

----- Original Message -----
From: "Ray Pixley" <rpixley(--nospam--at)>
To: <seaint(--nospam--at)>
Sent: Friday, December 08, 2000 7:59 AM
Subject: RE: copyright

> Looks like there a market for electronically sealing Cad drawings so that
they can only be read and not copied.  That way, whatever is "published"
can't be modified, and fine print can be added to the drawing that limits it
use, say to a particular job, etc.
> ------Original Message------
> From: "David Fisher" <dfisher(--nospam--at)>
> To: <seaint(--nospam--at)>
> Sent: December 8, 2000 12:49:12 PM GMT
> Subject: RE: copyright
> Unfortunately, as we all know, the advent of Cad and the proliferation of
> the internet to allow us to transfer drawing files and details
> electronically.
> When my firm first started, we were trying to be as accomodating as
> possible, just trying to get work; so we would email the structural files
> the architect for them to presumably "plot out"...
> Anyway, these two "friends" of mine who own an architectural firm
> "re-used" cad structural detail sheets of mine on other "similar" projects
> (and sometimes altered the details more to their liking!!!!) unknown to
> (This was all done to avoid paying me for enginerring on the subsequent
> projects, of course)
> Anyway, I found out about this practice later on either during the shop
> drawing phase or when they needed help and/or calculations to obtain
> permits.
> To say the least, I was pissed.
> My office now does not send files electronically to anyone, under any
> circumstances.
> On a more positive note...the "first class" architectural firms i work for
> now (thankfully) never even sneeze without consulting us...
> So there are good ones out there...
> David L. Fisher, SE,PE
> Senior Principal
> Fisher+Horos Structural Engineers
> 372 West Ontario
> Chicago, Illinois 60610
>   -----Original Message-----
>   From: Mark Baker [mailto:shake4bake(--nospam--at)]
>   Sent: Thursday, December 07, 2000 11:37 PM
>   To: seaint(--nospam--at)
>   Subject: copyright
>   Today I became aware of a disturbing situation. It seems a contractor
> (whom I do not know personally) copied a portion of a drawing produced by
> our office, reassembled it into a drawing of his own and tried to pull
> permit.
>   Tomorrow I meet with the individual who alerted me to this situation and
> will have the opportunity to see the drawing in question.
>   Anyone ever have a similar experience? Anyone know of the legal
> available for something like this?
>   Mark
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