Hello Ron,

I consider it like "Should" and "Shall" in the codes.
Should = They would like you to
Shall = You are going to

And = all of these
Or = Any of these

After 20 years in the Alarm business I learned to follow that rule of
thumb.



Tuesday, March 11, 2008, 10:18:04 AM, you wrote:

> Charles,
> I don't get the distinction here?

> On 3/11/08, Charles Thurston <[EMAIL PROTECTED]> wrote:
>>
>> Hello A.P.Silva,
>>
>> In my opinion I would have to agree all AID's should be zoned by floor.
>> This is due to the use of the word "AND" in the following line. If the
>> word
>> was "OR" I would be on your side of the fence.
>>
>> > "Alarm initiating devices" are given as "heat detectors,
>> > waterflow switches and manual stations".
>>                      ^^^
>> Tuesday, March 11, 2008, 2:12:35 AM, you wrote:
>>
>> > 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).
>>
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>>
>> --
>> Best regards,
>>   Charles Thurston    CET                        mailto:
>> [EMAIL PROTECTED]
>>   Coastal Fire Protection
>>
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-- 
Best regards,
 Charles Thurston    CET                        mailto:[EMAIL PROTECTED]
  Coastal Fire Protection

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