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Re: Blast Resistant Design

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In my experience with structures subject to blast conditions, interior walls
are usually designed to resist the blast impact (due to personnel working in
the area) and the exterior walls are designed as blow off panels.
Coordination was always required with architectural/site requirements but
usually was not an issue.

Domenic W. DeAngelo P.E.

----- Original Message -----
From: <jwhitty(--nospam--at)>
To: <seaint(--nospam--at)>
Sent: Friday, October 06, 2000 8:40 AM
Subject: Blast Resistant Design

> I have an H-2 structure that contains an explosive process...
> BOCA (governing building code) refers me to the NFPA 68 dealing with blast
> questions are these:
> 1.  Does the H-2 classification require explosion resistant design?
> 2.  If so, the NFPA seems to indicate that you can vent or design the
> structure to resist the peak blast loading.  What's wrong with allowing
> lightweight siding to "blow off" the building?  Is it because of danger to
> anyone who may be in the area or surrounding structures at the time?
> Obviously, if I can design the building with a steel skeleton and
> lightweight roofing/siding it will be considerably less expensive than a
> concrete/reinforced cmu structure designed to resist blast.
> I'm looking for guidance here.  Any help would be greatly appreciated.
> Thanks
> John Whitty, P.E.