Jobsite Fire Prevention

Buildings under construction are especially vulnerable to fire: fire protection systems aren’t working yet, combustible materials are everywhere, and hot work is common.

• Construction
• General Industry

The fire triangle

A fire needs fuel (wood, paper, plastics, fuels, dust), heat (sparks, flames, hot surfaces, electrical faults) and oxygen. Remove any one and the fire can’t start or continue.

Prevention habits

• Keep trash and scrap picked up and in metal containers or dumpsters away from the building.
• Store flammable liquids in approved containers and cabinets. See Flammable Liquids.
• Get a hot work permit before welding, cutting, grinding or torch work.
• Smoke only in designated areas.
• Keep heaters clear of combustibles. See Temporary Heaters.
• Inspect cords and temporary wiring. See Extension Cords.
• Put oily rags in covered metal cans.
• Charge lithium-ion batteries away from combustibles.

Be ready if a fire starts

• Fire extinguishers in place and inspected (in construction, generally within 100 feet of travel distance, and one per 3,000 square feet)
• Fire department access roads and hydrants kept clear
• Standpipes installed as the building rises, as required
• Exits and stairways clear and marked
• An alarm method and an emergency plan everyone knows. See Emergency Action Plans.

Last updated: October 2, 2026