But you can you can reduce the area by using EC sprinklers
* For HC-2 and HC-3 occupancies with ceilings up to 30 ft (9 m), reduce
sprinkler design demand to 0.3/1500 (gpm/ft2)/ft2 (12/140) (mm/
min)/m2 for wet-pipe systems when using K11.2EC (K160EC) upright sprinkler
with temperature ratings of 160°F (70°C).
* For HC-2 & HC-3 occupancies with ceilings up to 30 ft (9 m), reduce
sprinkler design demand to 0.3/1000 (gpm/ft2)/ft2 (12/90) (mm/
min)/m2 for wet-pipe systems when using K14.0EC (K200EC) upright sprinkler
with temperature ratings of 160°F (70°C).
* Although the sprinkler system protection guidelines use density over
demand area as a design format, when using extended coverage sprinkler
in facilities with ceilings up to 30 ft (9 m) high ensure the number of
sprinklers does not drop below a minimum of 6 sprinklers for K11.2EC
(K160EC) and 4 sprinklers for K14.0EC (K200EC).
David M. Canham
Fire Systems Solutions
15 Sayles Avenue
Lincoln, RI 02865
401-725-1089
-----Original Message-----
From: A.P.Silva
Sent: Monday, December 19, 2011 2:58 PM
To: [email protected]
Subject: FM requirement
Does FM allow design area reduction for QR sprinklers?
I know I should look for the answer in the FM data sheets, which I will do
when I get the time. But if anyone knows or have come across it recently,
would be a great help. From what I remember, FM does not allow it, but it's
been awhile since I've done an FM design.
Tony
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