This is kind of what I thought, but wanted to bounce it off the group
before I shot my mouth off
At 03:34 PM 7/21/2008, you wrote:
Todd: I think the temptation is to suggest that since the dome is
smaller than the required area of sprinkler operation of 1,500
sq.ft., then we shouldn't have to increase the design area for the
sloped portions of the dome. If the room was no more than 1,500
sq.ft. in area, I would agree with that approach. But in this case,
the remote area could include flat ceiling adjacent to the dome. A
fire could conceivably open more heads within the dome (and outside
the base design area) due to the sloped ceiling.
Bottom line is that at there is no verbiage in NFPA 13 to suggest
you can ignore the sloped ceilings of a dome when considering area increases.
Mark A. Sornsin, PE
Fire Protection Engineer
Ulteig Engineers, Inc.
3350 38th Avenue S.
Fargo, ND 58104-7079
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Todd
Williams - FPDC
Sent: Monday, July 21, 2008 9:29 AM
To: [email protected]
Subject: domed ceiling
This must be sloped ceiling day. I have a client with a church
project where the sanctuary is a cross and at the intersection is a
dome. The ceilings around the dome are flat at approx 28 ft and the
dome rises to 57 ft. The room area is approx 6400 sqft and the dome
is 1200 sqft. Do we have to include the 30% increase for roof slope
in the design area because of the dome?
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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