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Fire sprinklers - distance, fire code #171046
11/17/07 10:24 PM
11/17/07 10:24 PM
A
aldav53  Offline OP
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
In a commercial Building (a hanger I'm working on) How close can lights or other things be to the sprinkler head? is there a distance below or horizontally? I've heard 18" but it seems like directly below would allow the head to spray out better. Whats the fire code on this?


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Re: Fire sprinklers - distance, fire code [Re: aldav53] #171128
11/20/07 10:28 AM
11/20/07 10:28 AM
A
aldav53  Offline OP
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
I believe it's 18"

Last edited by aldav53; 11/20/07 10:29 AM. Reason: add letter

The Golden Rule - "The man with the gold makes the rule"
Re: Fire sprinklers - distance, fire code [Re: aldav53] #171136
11/20/07 01:40 PM
11/20/07 01:40 PM
E
earlydean  Offline
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Joined: Dec 2003
Posts: 751
Griswold, CT, USA
Per 2002 NFPA 13 (the sprinkler code) Table 8.3.2.5(c), 0-250 W light fixture requires a minimum distance of 6 inches from ordinary-temperature sprinklers, and 3 inches from intermediate-temperature sprinklers. Also, 250-499 W fixtures require a clearance of 12 and 6 inches respectively.

Any fixture within the spray pattern would have to be considered in the design by the engineer or certified installer to allow full coverage despite the obstruction.


Earl
Re: Fire sprinklers - distance, fire code [Re: earlydean] #171137
11/20/07 01:53 PM
11/20/07 01:53 PM
E
earlydean  Offline
Member
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
The title of Table 8.3.2.5(c) is: Ratings of Sprinklers in Specified Residential Areas. In other than residential situations, 8.3.2.5 requires the sprinkler head temperature rating to be adjusted. Item (6) requires: Sprinklers in unventilated show windows having high-powered electric lights near the ceiling shall be of the intermediate-temperature classification.
To get an answer to your question, you will have to consult the sprinkler engineer or installer.


Earl

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