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RE: Firewall Construction

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The most important thing here is to make sure the vendor has a UL rating on
the walls.  As far as combining the walls, etc., this should also be in a
tested or certified configuration.  UL has a book that shows the
configuration for a variety of walls, columns, beams, etc., and the fire
protection required for various times.  It has been a long time since I have
tried to get a new one, so I don't know the vitals (phone no., website,
etc.), but I am sure you could find this on the net somewhere.
Gregory N. Ferguson, P.E.
Des Allemands, LA

-----Original Message-----
From: Jenkins Engineering, Inc. [mailto:jei(--nospam--at)]
Sent: Friday, February 18, 2000 7:37 AM
To: seaint
Subject: Firewall Construction

I am trying to understand the general requirements  and details for firewall
construction.  All the firewalls I have designed were masonry and were
restrained near the top of the wall.
Have any of you used insulated panels, (metal skin /foam insulation), for
firewalls?  I have a spec sheet from a supplier that indicates that they can
get 3 hours on their panel.  
This project involves a large freezer structure with a firewall down the
middle - (project is still preliminary - I'm not sure yet if this is really
a firewall or an area separation wall).
Assuming the panel indicated above will work, could we achieve a four hour
wall by using 2 panels with some separation between the panels, say 3", but
attach each panel to its separate structure?
Any thoughts will be appreciated!

Bobby Jenkins, P.E.
Jenkins Engineering, Inc.
PO Box 2101
Tupelo, Ms  38803
662.840.1233 V / 662.840.1103 F