For new fire alarm installations and alterations, which documents are required?

• A. Written narrative, riser diagram, and floor plan layout
• B. Wiring diagrams only
• C. Site photographs and narrative
• D. Riser diagram only

Answer: (A)

When submitting for new fire alarm installations or alterations, you need a complete design package that clearly communicates how the system will be installed and function. The written narrative describes the project in words—system type, zones, devices, power supply, detection and notification logic, and the scope of work—so the authority having jurisdiction understands what is being done and why. The riser diagram shows the vertical distribution of the system: power sources, initiating devices, notification appliances, interconnections, and how circuits run through the building, ensuring the wiring topology is clear and meets code. The floor plan layout places every device on its actual location—detectors, pull stations, alarms, panel locations, and wiring paths—so installers can verify placement and coordination with the building plans. Together, these three documents provide the necessary context, topology, and physical placement required for approval and inspection. Wiring diagrams alone lack the overall project description and floor placements; site photographs and a narrative alone don’t show wiring topology and floor-by-floor device locations; a riser diagram alone omits device placements on the plans.