What state are you in? Can I assume you are planning quick response sprinklers.
Then why not 900 SF area of application allowance? What part of the code is AHJ using for this requirement. There are residential rules in 13. Use residential heads with .10 density Art Tiroly Tiroly and Associates From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Jay Stough Sent: Wednesday, July 13, 2016 10:51 AM To: Sprinkler Forum <sprinklerforum@lists.firesprinkler.org> Subject: Calculating extended coverage I have a nursing care facility that I am trying to calc. Must be 13 (2007) light. Can not use room design or residential method per state AHJ. The building is shaped like an upper case H with the bottom legs cut off. There are 4 rooms on one side of the corridor and 3 rooms on the other side of the corridor in each upper leg that use extended coverage sprinkler in each room. Also 1 standard spray sprinkler in a closet and one standard spray sprinkler in a bathroom in each room. Sprinklers in the corridor are standard spray also. Since I am using extended coverage sprinklers, I need to calculate 5 minimum. The sprinklers cover 16'3 X 14', so need to calc at the 18' X 18' rate. 22.4.6.2 allows me in "rooms like closets, washrooms and similar small compartments requiring only one sprinkler shall be permitted to be omitted from calculations within the area of application". Can I calculate 6 extended coverage sprinklers, without the corridor or "small rooms or compartments" for my 1500 sq ft? Or should I calc 5 extended coverage and the hallway sprinklers in the 1500 sq ft? Jay Stough NICET IV LAYOUT NICET III ITM
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