Could there a reason for redunancy? There may be situations where a designer requires more than the minimum set forth in NFPA depending on the hazard,business type,etc.
carlosgw,
"Let's say you have a 9X9 room with a small (12" dia 8" deep) light in the middle. Two sidewall sprinklers on opposite sides of the light fixture (assume ceiling sprinklers are not an option)"
See product data and listing of sidewall sprinklers. Some sidewall sprinklers are...
NFPA 13 - 2010 Section 8.15.22 Spaces Above Ceilings
Check whether 8.15.22.3 applies, but it doesn't sound like it will based on your description. This applies if only one side of the drop ceiling is open. See Figure A.8.15.22.3 (Annex).
skdesigner, 8.7.3.1.7 permits sidewall to have the protection area and maximum spacing for LH, but the occupancy would still be OH. To justify, I would interpret that the density for OH would still apply to this sprinkler since only the area and spacing were permitted to be modified. Since the...
Flow test requirements refer to NFPA 25 2010 Section 5.3.2.
NFPA 25 Section 6.3.1.5.2 - "Pressure gauges shall be provided for the test and shall be maintained in accordance with 5.3.2."
It appears each type of test has their own standard on gauges, as b1ueshift pointed out. I wouldn't have...
