i shouldn't be so lazy----
this is from 72 (2016): 3.3.36.3* Sloping Peaked-Type Ceiling. A ceiling in which the ceiling slopes in two directions from the highest point. Curved or domed ceilings can be considered peaked with the slope figured as the slope of the chord from highest to lowest point. (SIG-IDS). Brad _____ From: Sprinklerforum [mailto:[email protected]] On Behalf Of Brad Casterline Sent: Friday, November 18, 2016 9:46 AM To: [email protected] Subject: RE: Curved Roof Line NFPA 72 addresses curved ceilings, and I think you have done as it calls for. These are heat detector activation rules, and of course, closed sprinklers are nothing if they are not heat detectors first :) Brad _____ From: Sprinklerforum [mailto:[email protected]] On Behalf Of Tim Stone Sent: Friday, November 18, 2016 9:37 AM To: [email protected] Subject: Curved Roof Line In determining the increase in design area per 11.2.3.2.4 as applied to a curved ceiling/roof line, how do we measure the roof slope? I have drawn a straight line between the peak or highest point of the curve down to the eve and measured the slope to be 2:12. The straight line slope does not exceed 2:12 which would require the 30% increase. Due to the curve is it ok to treat this as a flat ceiling when applying the "Slope Ceiling" criteria? Thank you. Regards, G. Tim Stone G. Tim Stone Consulting, LLC NICET Level III Engineering Technician Fire Protection Sprinkler Design and Consulting Services 117 Old Stage Rd. - Essex Jct., VT. 05452 CELL: (802) 373-0638 TEL: (802) 434-2968 Fax: (802) 434-4343 <mailto:[email protected]> [email protected]
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