Home›Knowledge›IFC 903 — Automatic Sprinkler Systems
🌿 code_sectionfirefire

IFC 903 — Automatic Sprinkler Systems

Updated May 22, 2026
When sprinklers are required by occupancy classification, fire area, height, and water-supply availability. Triggers NFPA 13/13R/13D design.

Sprinkler trigger conditions affect MEP scope: water service size, riser room location, fire pump sizing. Flagged at the cockpit when project is commercial or > 5,000 sqft.

TAGS
IFC903sprinklerautomatic-sprinklerfire-protection
DETAILS
book
IFC 2024
section
903
mep calc workflow
q-panel-schedule
SOURCES
🔗https://codes.iccsafe.org/content/IFC2024P1/chapter-9-fire-p...
RELATED KNOWLEDGE
📐 Standard
NFPA 13 — Standard for the Installation of Sprinkler Systems
Design and installation of automatic sprinkler systems: hazard classification (Light/Ordinary/Extra), density-area curves, hydraulic calculations, sprinkler spacing.
🌿 code_section
NEC 220.83 — Existing Dwelling Optional Calculation
Alternative load-calc method for existing single dwelling units: first 8 kVA of all loads at 100%, remainder at 40%, plus A/C at 100%.
🌿 code_section
NEC 240.4 — Conductor Overcurrent Protection
Conductors must be protected at their ampacity. 240.4(D) small-conductor rule: 14 AWG max 15A, 12 AWG max 20A, 10 AWG max 30A.
🌿 code_section
NEC 250 — Grounding and Bonding
Governs grounding electrode system, equipment grounding conductor sizing, and bonding requirements at the service. Required for every panel schedule.
🌿 code_section
UPC 422.1 — Minimum Plumbing Fixture Count
Required number of water closets, lavatories, urinals, drinking fountains, and service sinks by occupancy and occupant load.
🌿 code_section
NEC 220.12 — General Lighting Load by Occupancy
VA-per-square-foot table used as the base general-lighting load in any service-load calc. Office 3.5, dwelling 3.0, restaurant 2.0, warehouse 0.25.
← Back to Knowledge Garden