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Factory Mutual Datasheets 3-26 Table 2

Factory Mutual Datasheets 3-26 Table 2

Factory Mutual Datasheets 3-26 Table 2

(OP)
FM datasheets are so far removed from what I am used to dealing with I thought I would drop this just to make sure I am right.

This is a Factory Mutual project.
Factory Mutual Datasheets 3-26 Table 2
Mercantile HC-2
Maximum Ceiling Height < 30'-0"
Wet System

The notes under Table 2

Quote:

* 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).

I would like to use the EC-14 160 Deg

http://www.tyco-fire.com/TD_TFP/TFP/TFP220_02_2012.pdf

Using the TY6137 (K=14.0) Upright.  Assume spacing is 14' between heads x 16' between lines for 224 sq ft.  Minimum head discharge would have to be 67.2 gpm and I would have to have a minimum of 5 sprinklers operating.  Calculated area would be four sprinklers on one line and a single sprinkler on another line.
 

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