This is a 30,000 sq.ft. residential 4 storey building of combustible construction. The building code limits building area to approx. 18,000 sq.ft. My understanding is the firewalls are due to this area limit. 30,000 sq.ft. building split into three, approx. 10,000 sq.ft. each. The building code also states that on the actuation of "alarm initiating devices" the fire alarm annunciator shall have separate zone indication for each "floor area". Floor area is defined as the space between the exterior walls and required firewalls. "Alarm initiating devices" are given as "heat detectors, waterflow switches and manual stations". My interpretation is that the intent of the code is satisfied if any one of the alarm initiating devices (AID) satisfy the zoning requirement. The AHJ insists that "all" AID's should be zoned per "floor area".
What I'd like to know is if other building codes have similar annunciator requirements, and if so, is the sprinkler system zoned for each fire compartment? Tony -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roland Huggins Sent: March 10, 2008 2:56 PM To: [email protected] Subject: Re: Horizontal Exits Considering that a 4 story building can be a SINGLE zone for ALL floors, still can't see the barrier driving a split per floor zoning. The mention of triggering smoke control does flag that it could be a performance based design building, then all bets are off. For a PBD, such thing are documented. You may very well being dealing with a "seemed like a good idea at the time" issue. Roland On Mar 10, 2008, at 1:55 PM, Justin Reid wrote: > Zoning the sprinkler system to one side versus the other will tell the > fire department which side of the horizontal exit the fire is located. > They may be stating that separate zoning is needed so they know which > side of the horizontal exit to respond to. That is the only reason I > can think of to zone the two sides differently. And to answer your > question, I have not seen a system split into two zones for just a > horizontal exit. But I am a newbie ( <5 years in the business so I > would defer to others on that). _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
