WHy not use a K5.6 residential sprinkler?
  
  
  
 Todd G Williams, PE  
Fire Protection Design/Consulting
  
Stonington, CT
  
860-535-2080 (ofc)
  
860-553-3553 (fax)
  
860-608-4559 (cell)
  
  
  
  

  
  
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> On Jan 7, 2019 at 12:53 PM,  <Steve Leyton 
> (mailto:st...@protectiondesign.com)>  wrote:
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> Sorry ‘bout that last one.
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> Assuming you stretch the spacing to 18’ x 18’ your math is correct.    But 
> you don’t have to assume maximum listed areas of coverage, you use the actual 
> S x L.    If a residential sprinkler is spaced so that its area of coverage 
> is 14’ x 16’-9”, you have to use a sprinkler that’s listed up to 18’ x 18’, 
> but you would calculate the discharge at 23.45 gpm.       
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> Steve L.
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>  From:    Sprinklerforum 
> [mailto:sprinklerforum-boun...@lists.firesprinkler.org]  On Behalf Of  
> Trillium Fire Sprinkler Design Inc.
>   Sent:  Monday, January 07, 2019 9:50 AM
>   To:  sprinklerforum@lists.firesprinkler.org
>   Subject:  residential sprinklers
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> I HAVE A HOTEL THAT SAYS NFPA 13 DESIGN.
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> IF I USE RESIDENTAIL SPRINKLERS IN THE UPPER FLOORS. AM I CORRECT IN SAYING 
> THAT I MUST USE .10 DESNITY
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> EXAMPLE . I WAS GOING TO USE 18x18 4.9 K SPRINKLER
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> REQUIRES 17 GPM @ 12 PSI FOR .05 DENSITY
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> BUT SINCE NFPA #13 WOULD I BE REQUIRED TO DESIGN TO THESE NUMBERS.    32.4 
> GPM @ 43.72 PSI?
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> OR AM I MISSING SOMETHING.
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> THANKS
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