Per NFPA 2016, 18.104.22.168 Multistory buildings exceeding two stories in height shall be provided with a floor control valve, but section 22.214.171.124 has an exception. Is there a maximum or minimum amount of floors to this exception?
We are directed back to 8.2.1, which states 52,000 Square Feet.
So regardless of number of floors, if the maximum Sq Ft allowed is not exceeded, then you are good.
I under stand the requirement of 126.96.36.199 states that if the total area of all floors combined does not exceed the system protection area then floor control valves are not required. My question is about 188.8.131.52, the total area of all floors added together exceeds 52,000 but the 4th floor has to be fed from the floor below.
Section 184.108.40.206 seems to be an exception only regarding the top floor. Meaning, you can eliminate the requirement for a floor control valve assembly on the top floor, if you serve the top floor from the floor below. I think the intent of the code is more geared towards penthouse type situations, were the amount of coverage needed on the penthouse/top floor is small and it's rather trivial to add an entire floor control valve assembly for the limited amount of space.
If a fire does occur on the top floor, the fire department will be able to see that the flow switch on the floor control valve assembly at the floor below is sending the signal, go to that location, and quickly figure that they need to go up to another floor to the small penthouse area.
Just my 2 cents.
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