Non Combustible Attic

[Ehendrix]

I have a Noncombustible attic with a Mechanical Platform in a large Dentist Office. The mechanical platform is above the drop clg constructed of steel beams with a concrete deck and a steel peaked roof above it.

Now the FAU's are gas fired so we are going to protect above that platform with around 6 sprinklers. I am trying to find a section of the code as to how I need to calculate that small area.

Any help is greatly appreciated.

 

[cdafd]

Which edtion of 13 are you in?

Why the sprinklers? What section of 13 are you looking at that requires them, or are they being installed to install??

 

[Ehendrix]

They want it to be protected, but I agree with you.. It's only 6 sprinklers, I dont think I need to calc it but I might just to get the pipe sizes I want for that little area.

 

[NightME]

What is you considered this equipment in a room? What density and spacing would you use there (maybe 0.15 and 130 spacing)? Could you apply the same design criteria to the mech platform and your 6'ish sprinklers?

I assume the sprinklers are on the underside of the roof deck, and not suspended in the air above the equipment?