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NFPA 13 · Light Hazard

Hospital fire sprinkler design

Patient wards and clinical areas are Light Hazard. Plant rooms, kitchens and storage step up to Ordinary Hazard. Redundant pump sets and dual water supplies are typical.

Design parameters

StandardNFPA 13
Hazard classLight Hazard
Design density0.10 gpm/ft² over 1500 ft²
Area of operation139 m²

Design notes

  • Quick-response heads throughout patient areas
  • Coordinate with medical gas, MRI and isolation room constraints
  • Dual electric + diesel pump set for resilience
  • Smoke compartments aligned with sprinkler zones

Typical equipment

  • QR concealed pendent K80
  • Diesel + electric pump set
  • Dual water supply
  • Floor isolation valves per ward

How FireTwin AI handles hospital projects

Upload your floor plan or model the building footprint directly. FireTwin AI classifies rooms, applies the NFPA 13 Light Hazard grid, runs the hydraulic calculation from the most remote area back to the pump, and produces a priced BOM — all re-verified on every edit.

Design it in FireTwin AI

Generate a compliant sprinkler layout, run the hydraulic calculation and export a priced bill of materials — checked against EN 12845 and NFPA 13.

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