AEC definitions
Fire protection is the work that detects and suppresses fire and that keeps it from spreading. Active systems include sprinklers, standpipes, and alarms. Passive protection includes rated walls, floors, and spray fireproofing. The building code decides what a project needs. A fire-protection engineer or a qualified designer designs the active systems.
What you're looking at
Fire Sprinkler Plan, annotated
A fire sprinkler plan with the main, branch lines, and heads spaced to the hazard classification.
Definition
People say fire protection and mean only sprinklers. The documents are broader. The architectural set shows passive ratings. The fire-protection drawings show heads, mains, and standpipes. The electrical set shows alarm devices. Coordination among those sheets is a life-safety issue, not a nicety. Hydraulic calculations and, often, a delegated design or a deferred submittal support the sprinkler layout. The fire official and the plans examiner both review this scope. The contractor installs listed equipment. They do not invent the hazard classification.
In depth
Wet, dry, preaction, and deluge systems solve different hazards. Standpipes serve the fire department. The riser diagram shows valves and flow switches. The floor plan shows heads. Both have to match the hazard the code assigned.
Kitchen hoods and special-hazard systems are separate specifications. Do not hide them inside a generic sprinkler section.
A sprinklered building still has rated shafts and occupancy separations. Spray fireproofing on steel is passive protection with its own inspection. The architectural rating and the sprinkler design are not interchangeable.
Penetrations must be firestopped with a listed system. An unsealed hole undoes the wall.
Smoke detectors, pull stations, and notification appliances may be on electrical or fire-alarm drawings.
The sprinkler flow switch has to initiate the alarm. Name the interface so each trade does not assume the other has it.
The building department and the fire marshal can both comment. Responses should go to the one who wrote the comment, with a copy to the other if the project requires it.
A sprinkler deferred submittal is timed so procurement does not outrun approval.
Examples
The code sheet requires sprinklers. The fire-protection drawings show a wet system and a standpipe. The architectural sheets show the rated stair the standpipe serves.
A flow switch on the sprinkler riser is connected on the fire-alarm drawings. Both trades include the interface.
Firestopping at a rated wall is a listed system, inspected, not a field-cut foam the installer preferred.
Tooling
Nomic can cite the sprinkler note, the rating tag, and the specification section together.
It does not lay out heads or certify a hydraulic calculation. The fire-protection designer does.
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