I had thought the presence of the elevator itself does not necessarily require a sprinkler system if the building does not require a sprinkler system.
For example, if a two-story, type II-B, Business (B) Occupancy building is under 23,000 sqft, the IBC does not require a sprinkler system to be installed. Therefore, the hoistway or the EMR would not require sprinklers.
I’ve had elevator designers argue that the presence of hydraulic fluid requires sprinklers.
I disagree, however; hydraulic fluid is typically a Class III-B flammable liquid. In the example above a two stop elevator would have less than 1000 lb (~150 gal) of hydraulic fluid which does not trigger any Hazardous Occupancy as the control area volume limit for closed-use systems is 13,200 gallons.
Is this the correct approach to take? Does the presence of the hydraulic fluid or any other component of an elevator trigger sprinkler requirements for the rest of the building?
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