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RE: ASCE wind loading diagrams

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After researching arguments for using C&C loads for roof trusses, and end zones and uplift areas, I recently started providing explicit wind load diagrams with all of the ASCE zones tabulated.  There are too many areas for misinterpretation by contractor-hired engineers that it is in my best interest to provide the loads up front.  Theoretically, the time it takes to provide this information is less than the time it takes to argue with the roof truss or wall panel contractor about it.
 
And speaking on behalf of someone who used to work for a specialty contractor, it is very frustrating trying to anticipate what the designer of record intended when they provided wind girts that were undersized for C&C loads or free-standing light framed parapets that were fastened to the roof deck with screws, for example.  Providing the additional C&C wind loads might have forced an engineer or two to better think through the details.
 
Jim Wilson

TED RYAN <tryan(--nospam--at)pcsainc.com> wrote:
I too include this in my calcs, made it standard procedure.

Ted Ryan

-----Original Message-----
From: Garner, Robert /SD [mailto:rgarner(--nospam--at)moffattnichol.com]
Sent: Monday, December 13, 2004 10:17 AM
To: 'seaint(--nospam--at)seaint.org'
Subject: RE: The failings ... I second the motion!


I always show all the wind zones in my calcs. If for no other reason,
It's
the only way I can assure myself that I didn't miss something.

Bob G.

-----Original Message-----
From: L. Pack [mailto:Lloyd(--nospam--at)pecid.com]
Sent: Monday, December 13, 2004 10:24 AM
To: seaint(--nospam--at)seaint.org
Subject: RE: The failings ... I second the motion!


On 13 Dec 2004, at 9:48, TED RYAN wrote:

> I whole heartedly second this motion! These posts are out of hand. I
> am on the verge of unsubscribe and I know others in my office are too.
> The quality of dialogue will continue to decrease because people who
> might actually have some good input on ENGINEERING are no longer
> subscribing.
>
> Ted Ryan

It would unfortunate if those who read and contribute to this list
decide
to leave because they aren't getting enough engineering dialogue. I
would like to see those who are thinking of leaving the list start
posting
more engineering posts to counter those posts that they feel are off
topic to the list. Everyone here has the opportunity to contribute and
to make this list more like what they would want. Instead of
complaining,
just start posting engineering related posts.

With more engineering posts, those who don't like the off-topic posts
will
have a higher eningeering to "noise" ratio and can easily delete the
threads that they don't want and will still have plenty engineering
posts
to read and enjoy.

I enjoy the variety of posts here, both off-topic and on-topic posts. I
feel
that life is rarely so compartmentalized that those off-topic items
don't
affect our engineering as well. The variety of posts help to get a
feeling
for the character of the posters and thereby make them seem more
human.

On-Topic:

How often have you been required or had requests to include wind load
diagrams for the structures that you are designing. Are the diagrams
in ASCE 7 not sufficient for your clients or do you provide them with
diagrams showing the various wind loading zones used to generate your
loadings on the structures?

I was recently asked to show these zones on a job, and was surprised
to get the request, as I've not run across that before.

What have others on this list done in their calculation packages?

Take care,
Lloyd Pack, P.E.


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