Fire Code 101: IFC vs NFPA 1 and What You Need to Know

Two Fire Codes

Like plumbing, fire safety in the United States is governed by two competing model codes:

• IFC (International Fire Code) — published by the International Code Council (ICC), designed to work alongside the IBC
• NFPA 1 (Fire Code) — published by the National Fire Protection Association, designed to work alongside the NFPA building codes and the broader library of NFPA standards

Most jurisdictions that adopt the IBC also adopt the IFC. Jurisdictions that adopt NFPA building codes typically adopt NFPA 1. However, both codes reference many of the same underlying NFPA standards (such as NFPA 13 for sprinklers and NFPA 72 for fire alarms), so there is significant overlap in the actual technical requirements.

What Fire Codes Cover

Fire codes regulate the ongoing operation and maintenance of buildings, as opposed to building codes which regulate construction. Key areas include:

• Fire prevention — storage of flammable and combustible materials, hot work permits, open flame regulations
• Means of egress — maintaining exit paths, exit signage, emergency lighting, maximum occupancy loads
• Fire protection systems — inspection, testing, and maintenance (ITM) of sprinklers, fire alarms, standpipes, fire extinguishers, and smoke control systems
• Hazardous materials — storage, handling, and use of chemicals, compressed gases, and flammable liquids
• Fire department access — fire lanes, key boxes (Knox boxes), fire hydrant access, aerial apparatus access
• Special occupancies — high-rise buildings, malls, airports, healthcare facilities, educational facilities

Key Requirements Every Building Owner Should Know

Fire Extinguisher Requirements

Both codes require portable fire extinguishers in commercial and industrial occupancies:

• Maximum travel distance to a fire extinguisher is 75 feet for Class A hazards and 50 feet for Class B hazards
• Extinguishers must be inspected monthly (visual check) and serviced annually by a qualified technician
• Extinguishers must be mounted on brackets or in cabinets, not sitting on the floor
• The top of the extinguisher must not be more than 5 feet above the floor (for units over 40 lbs, maximum 3.5 feet)

Fire Sprinkler Inspection and Testing

If a building has an automatic sprinkler system, the fire code requires regular inspection, testing, and maintenance per NFPA 25:

• Weekly: Check valve positions (should be open), gauges, and alarm devices
• Monthly: Inspect sprinkler heads for damage, loading, corrosion, or paint
• Quarterly: Test water flow alarms, supervisory signals, and main drain
• Annually: Full system inspection including internal valve inspection, trip testing, and fire pump testing
• Every 5 years: Internal inspection of check valves, dry pipe valves, and preaction valves

Maximum Occupancy and Egress

The fire code enforces the maximum occupant load established by the building code. Common occupant load factors from the IBC:

• Assembly (standing) — 5 sq ft per person
• Assembly (seated, chairs only) — 7 sq ft per person
• Business — 150 sq ft per person (gross)
• Mercantile (retail, ground floor) — 30 sq ft per person
• Educational (classrooms) — 20 sq ft per person

The posted maximum occupancy must not be exceeded. Exit doors must swing in the direction of egress travel when serving an occupant load of 50 or more. Exit paths must remain clear of storage and obstructions at all times.

Common Violations

Fire inspectors report these as the most common violations they encounter:

1. Blocked exits — storage in exit corridors, locked exit doors, removed exit signs
2. Expired fire extinguishers — overdue for annual service or hydrostatic testing
3. Disabled fire alarm systems — systems taken offline for construction and never restored
4. Improper storage of flammables — gasoline and solvents stored in non-rated containers or rooms
5. Missing or broken exit lighting — emergency lights and exit signs not functional
6. Obstructed sprinkler heads — storage piled too close to sprinkler heads (minimum 18 inches clearance required)