] [Thread] [Date] [Author]

[Gary Ehrlich <GEhrlich(--nospam--at)mcecorp.com>]

Two possibilities:

PDHOnline has two courses on firewalls, one of which covers how to calculate
the pulling force induced by the collapse of the structure on one side of
the firewall and design lateral ties accordingly.  The course links are
http://pdhonline.org/courses/g125/g125.htm and
http://pdhonline.org/courses/g130/g130.htm; I forget which one covers the
method.  (I think it's the latter one).

The other possibility is to specify a "melt-away" anchor using rolled zinc
alloy as the material for your ties to the wall.  The zinc alloy has a much
lower melting point (~800F) as compared to the standard steel or aluminum
ties.  Heckmann offers anchors from the rolled zinc alloy (see their catalog
at www.heckmannbuildingprods.com under "Breakaway Fire Anchors"; don't know
if anyone else does.

Gary

Gary J. Ehrlich, P.E.
Meyer Consulting Engineers Corp.
451 Hungerford Drive, Suite 113
Rockville, MD  20850
(301) 738-5690
(301) 738-5695 fax

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