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Topic:
Los Angeles Smoke Detector/CO Placement
This thread has 6 replies. Displaying all posts.
Post 1 made on Wednesday December 6, 2017 at 23:57
tca
Active Member
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I've been searching the internet and reading through the California fire code. For a single story home (ranch style) it seems like you need a smoke detector/CO in each bedroom and the hallway leading to the bedrooms. It seems you do NOT need a smoke detector/CO anywhere else for a single story home.

All smoke detectors/CO must be hard wired with battery backup, and if one sounds all must sound.

Does this sound correct?

Thanks.

Last edited by tca on December 7, 2017 11:42.
Post 2 made on Thursday December 7, 2017 at 08:05
jrainey
Long Time Member
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418
Sorry not familiar with CA fire code....and not to nitpick but these are CO sensors not CO2 sensors.
Post 3 made on Thursday December 7, 2017 at 11:04
SammPX
Long Time Member
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362
I happen to have a set of plans on my desk for a project in Santa Clara county which is SF bay area, Nor Cal. Here's the verbiage for this project however ever building inspector/fire district may have their own codes to follow so you should check with the appropriate local authority on the matter.


7. smoke alarm shall be installed in accordance with crc 314 and nfpa 72. a smoke alarm shall be installed in each
sleeping room, outside each separate sleeping area in the immediate vicinity of the bedrooms. a smoke alarm
shall be installed on each additional story of the dwelling, including basements and habitable attics but not
including crawl spaces and unhabitable attics. in dwellings or dwelling units with split levels and without an
intervening door between the adjacent levels, a smoke alarm installed on the upper level shall suffice for the
adjacent lower level provided that the lower level is less than one full story below the upper level. when
more than one smoke alarm is required to be installed within an individual dwelling unit the alarm devices shall
be interconnected in such a manner that the actuation of one alarm will activate all of the alarms in the
individual unit. alarms shall be installed in accordance with approved manufacturer’s instructions. when the
valuation of an addition or repair exceeds $1,000.00, or when one or more sleeping rooms are added or created in
an existing dwelling, the entire dwelling shall be provided with smoke alarms located as required for new
dwellings. in new construction, required smoke detectors shall receive their primary power from the building
wiring when such wiring is served from a commercial source and shall be equipped with a battery backup. the
alarm shall emit a signal when the batteries are low. wiring shall be permanent & without a disconnecting
switch other than those required for over current protection. smoke alarms may be solely battery operated
when installed in existing buildings, or in buildings without commercial power, or in buildings which undergo
alteration, repairs or additions regulated as outlined above. final inspection will require operational smoke
detectors in all bedrooms, basement and adjoining hallway outside the bedrooms on every living level of the
home. smoke detectors shall sound an alarm audible in all sleeping areas. in large houses, the detectors are
required to be interconnected so that all activate during a fire.

8. carbon monoxide alarm shall be installed in accordance with crc 315. for new construction, an approved
carbon monoxide alarm shall be installed in dwelling units and in sleeping units within which fuel-buring
appliances are installed and in dwelling units that have attached garages. alarms shall be installed in
accordance with approved manufacturer’s instructions. where a permit is required for alterations, repairs or
additions exceeding $1,000.00, existing dwellings or sleeping units that have attached garages or fuel-buring
appliances shall be provided with a carbon monoxide as required for new dwellings. carbon monoxide alarms
shall only be required in the specific dwelling unit or sleeping unit for which the permit was obtained. required
carbon monoxide alarms shall be installed outside of each separate dwelling unit sleeping area in hte immediate
vicinity of the bedrooms. one every level of a dwelling unit including basements. carbon monoxide alarms
combined with smoke alarms shall comly with crc315, all applicable standards, and requirements for listing and
approval by the office fire marshal, for smoke alarms

Last edited by SammPX on December 7, 2017 20:12.
OP | Post 4 made on Thursday December 7, 2017 at 11:41
tca
Active Member
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December 2005
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samm that is the same verbiage I have been seeing all over the place. Thanks.
Post 5 made on Thursday December 7, 2017 at 12:52
Ernie Gilman
Yes, That Ernie!
Joined:
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December 2001
28,041
On December 7, 2017 at 11:41, tca said...
samm that is the same verbiage I have been seeing all over the place. Thanks.

Well, aside from making that seem like you're being shouted at by your Master Sergeant, what does it tell you? Damn if I'm going to carefully read that through!

I did see some onerous things, though: if an addition is valued at more than $1,000, the entire building will require the installation of alarms that all sound if one goes off. Damn, that's an effective way to stifle construction!
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 6 made on Thursday December 7, 2017 at 20:13
SammPX
Long Time Member
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362
Ya didn't pick up on the "shouting" this morning before I headed out to the site. fixed it.

Edit : I copied/paste the text directly off of a plan pdf and would guess the the font and sentence structure didn't carry over. I didn't type all that in caps and run on sentences!

Last edited by SammPX on December 8, 2017 01:19.
Post 7 made on Thursday December 7, 2017 at 23:10
Ernie Gilman
Yes, That Ernie!
Joined:
Posts:
December 2001
28,041
complete lack of capitalization and lines that are still longer than one line ARE NOT
REASONABLE REPLACEMENTS
FOR WRITING THAT IS ALL IN CAPS AND THAT RUNS FROM THE END OF ONE LINE
TO ABOUT A THIRD OF THE
WAY THROUGH THE SECOND LINE AND THEN ALTERNATES FULL LINES AND
PARTIAL LINES.
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw


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