I'm currently working on a residential " R-2 type as per IBC" on the design of Fire Alarm system. Is it required to have detectors above suspended ceiling noting the below information?
* Distance between Ceiling level and Suspended ceiling is 1.5m.
* There is no supply or return ducts for HVAC system. All rooms and corridors are covered by Fan Coil units "FCU" using refrigerants with outdoor units. Fresh air is coming through a package A/C unit.
* The building is fully covered by Automatic Sprinkler system.
I'm using International Building Code "IBC" 2015 issue as a basis for my design and couldn't find a clear and solid answer.