Ken: 175 is considered intermediate-temperature rating (Table 6.2.5.1, 2002 ed.). Per that table, and also 8.3.2.1, unless certain extenuating circumstances exist the appropriate temperature rating for areas with ambient ceiling temps not exceeding 100 deg. F is Ordinary, which would conflict with your choice of 175. Obviously, it is likely that certain areas may be influenced by heat-producing sources, such as gas fire places, cooking equipment, furnaces, water-heaters, etc., but the sprinklers should otherwise be in the range of 135-165 for residential and/or QR spray sprinklers.
Stephen M. Leyton PROTECTION DESIGN & CONSULTING -----Original Message----- From: KEN KERN [mailto:[EMAIL PROTECTED] Sent: Saturday, January 06, 2007 11:00 AM To: [email protected] Subject: Re: 155 degree -vs- 175 degree Design approach: 31 story high-rise building with 3 levels of below grade parking, 1 level mixed-use and 30 levels of residential living. Fire sprinklers installed are residential type fire sprinkler on the residential occupied floors only. As per the listing of the residential fire sprinkler and in relationship to the location to a heat source and without adding more heads in the project I designed the units using 175-degree heads throughout the residential occupied floor in the residential occupied units. I felt that this would not be an issue for the data sheets did not specify and for the ease of consistency of installation and future maintenance for the building. Issue: Can 175-degree residential fire sprinkler be used throughout the residential occupancy in a high-rise building? Manufactures data sheets do not specify yes or no. These are residential fire sprinklers with a faster response time and different spray patterns as compared to standard (commercial) type fire sprinklers. I feel that this is where the confusions is with this issue. Can anyone help me out there to resolve this issue or am I at fault here with my approach. K. Kern BFP, Inc. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
