Kevin, You are correct, well at least pursuant to the IBC;
705.4 Fire-resistance rating. Fire walls shall have a fire-resistance rating of not less than that required by Table 705.4. TABLE 705.4 FIRE WALL FIRE-RESISTANCE RATINGS GROUP FIRE-RESISTANCE RATING (hours) A, B, E, H-4, I, R-1, R-2, U 3 F-1, H-3b, H-5, M, S-1 3 H-1, H-2 4 F-2, S-2, R-3, R-4 2 Hope that helps, John Drucker, CET Fire Protection Subcode Official Fire/Building/Electrical Inspector Fire Marshals Office Borough of Red Bank, NJ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Law, Kevin W Sent: Friday, October 23, 2009 1:40 PM To: [email protected] Subject: RE: Firewalls full height to roof deck? I am not aware of any 1 hr fire walls??? I think Roland is right, likely a 1 hour barrier, not a firewall. Is the drop ceiling rated? Kevin Law, PE Bechtel National, Inc. Waste Treatment Project Fire Protection Engineering Work (509) 371-3280 Cell (509) 531-5715 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Friday, October 23, 2009 10:36 AM To: [email protected] Subject: Re: Firewalls full height to roof deck? take a quick look at the definitions in the building code. Firewalls are typically a larger rating and must allow collapse on one side without pulling both sides down. Fire Partitions are used to separate occupancies, fire areas, etc. Sounds like that's what you have and they sometimes terminate at the drop ceiling. Roland On Oct 23, 2009, at 9:38 AM, Ralphy Henderson wrote: > Okay, stupid question but: > > Are all firewalls sheathed to the roof deck? > > I have a set of plans that's calling out 1 hr firewalls but sections > don't show them going all the way up to the roof deck. Thought I would > ask here before calling the architect to see if there is a general > rule of thumb. > > Thanks, > > R > > > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
