Dwelling fire sprinklers: designed and installed per NFPA 13D or P2904 (residential sprinklers, listed)

Description

Automatic sprinkler systems in one- and two-family dwellings must be designed and installed per NFPA 13D or Section P2904 of this code (whichever is applicable). Sprinklers must be NEW, LISTED residential sprinklers installed per the manufacturer's instructions. Piping must be supported per the cold-water-distribution requirements (P2605) and freeze-protected where exposed to freezing temperatures. Sprinkler coverage must address obstructions per P2904.2.4 — e.g. ceiling fans, light fixtures, and beams must not block the spray pattern.

Why this exists

Residential sprinklers are now mandated for many NY dwellings (R309 — townhouses ≥3 stories, 1-2 family ≥3 stories above grade). For other dwellings they're a strong life-safety option. Architects designing tall homes or homes with vaulted ceilings should pre-plan the sprinkler grid and the piping route — adding P2904 piping after framing is expensive.

Categories

Applies to

• Jurisdiction: New York State

Source

Solver enforcement

Browsable only — the solver does not currently enforce this directive (no spec-level data to check against). This entry exists so the architect personas can cite it in conversation and the user can read what the rule says.

Related directives

• Garage / dwelling fire separation · IRC R302.6
• Habitable space minimum ceiling height · IRC R305.1
• Egress window net opening dimensions · IRC R310.2
• Stair riser, tread, and headroom · IRC R311.7
• Smoke alarms required throughout dwelling · IRC R314