For this project you the 3rd floor is split in thirds: The middle third
is an actual floor with 2 stairwells and an elevator with exposed roof
trusses. One each end of the building there is a door leading to the
other 2 thirds of the space. The floor level is consistent but the roof
drops 10' or so which forms the "rooms" I am talking about.
I think I was correct in my opinion that it is not a CCS and therefore
it should not have to comply with those rules.
Thanks,
Greg
On 1/20/2011 3:52 PM, Thom wrote:
The difference I see is that an "Attic" is between the ceiling of one floor
and the roof. Where-as what we were presented with is a concrete floor and
an exposed roof structure, which the code not the Arch. Calls a "story".
Arch. Are famous for calling things on the drawing one thing while the code
requires them to be protected as something else entirely.
I especially like when in a warehouse the put "Future Office" with dotted
lines, and want to know why the OH system must go over their LH office area.
The other point I'd make, in ref. to the LH vs. OH space is anything with a
concrete floor and a door will eventually become storage. An attic is
allowed to be LH because it is not "Easy" or convenient to store stuff in
it. The area as described sound both easily accessible and convenient to
access thru the door.
The "Attic" theory could apply IF the concrete floor is the ceiling of a
floor below, and doesn't have the means of access required to be considered
a Mezz. Or floor by the building code. That door must come from somewhere,
is that another "Floor"?? So this would just be an extension of that floor?
As far as what does combustible vs. non-combustible have to do with whether
or not it's an attic? Nothing. Warehouses can be combustible construction.
We often see Arch. Calling a Mechanical Mezz. With enclosed stairwells,
rated doors, bathrooms and everything needed to be a floor "Attic's" Just
because they Mislabeled it doesn't mean we'll be allowed to treat it as an
attic. Or not install a standpipe. We may have a good case to get a CO to do
it, but the building officials or FM will still say if it's and attic or
Mech. Mezz and "4th floor" Or Floor 30'-0" or more above the lowest level of
FDP access.
Now it's only worth 1/2 a farthing.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Ronl.Fletcher
Sent: Thursday, January 20, 2011 10:51 AM
To: [email protected]
Subject: RE: DEFINITION OF A CONCEALED SPACE
I know that if it is combustible and the FP System is per NFPA #13 the hair
we are splitting is if it is LH or OH but, wouldn't whether it is considered
a story or not be something decided by the architect and the local building
department? If the plans call it an attic or don't call it anything at all
and it's not calculated as part of the total square feet of the building
then it should be an attic. By calling the attic a an occupied space a three
story building with an accessible attic would be 4 stories and require a
standpipe system.
Ron Fletcher
Aero Automatic
Phoenix, AZ
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