Chapter 09
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Transcript

  • 1. Chapter Nine General Fire Safety Provisions
  • 2. Learning Objectives
    • Describe
      • NFPA 550 Fire Safety Concepts Tree
    • List two strategies for fire safety from model codes
    • List three objectives for each
  • 3. NFPA 550 Fire Safety Concepts Tree
    • Fault-tree analysis system for fire safety
      • Developed in 1974
      • Identifies fundamental strategies and lists objectives for a safe environment
  • 4. NFPA 550 Strategies
    • Prevent ignition
    • Manage impact
  • 5. Prevent Ignition
    • Control heat sources
      • Smoking, heating appliances, electrical hazards, open flames
    • Control fuels
    • Regulate materials storage and handling
    • Control the interaction between the two
  • 6. Manage Impact
    • Limit building height and area
    • Provide adequate fire resistance
    • Provide adequate egress systems
    • Provide built-in fire protection systems
    • Separate hazardous processes
    • Provide adequate training
  • 7. Illegal Change in Use
    • Occupancy classification determines
      • Building height and area
      • Structural fire resistance
      • Means of egress features
      • Built-in fire protection systems
      • Allowable amounts of regulated materials
  • 8. Illegal Change in Use
    • Building height and area
    • Structural fire resistance
    • Means of egress features
    • Built-in fire protection systems
    • Allowable amounts of regulated materials
    • Can all be inadequate for the new use
  • 9. Maintenance of Rated Assemblies
    • Occupancy separations
    • Means of egress components
    • Exit stairs, exit passages, horizontal exits, rated corridors
    • Structural protection
    • Walls, partitions, floor/ceilings, roof ceilings, structural frame
  • 10. Maintenance of Rated Assemblies
    • Opening protectives
      • Fire doors, fire windows, fire dampers, rated glazing, through penetration firestops
      • Building shafts, atriums
  • 11. Maintenance of Nonrated Barriers
    • Draftstopping limits fire spread in large combustible, concealed spaces
      • Attics and truss floors
    • Fireblocking limits fire spread in small concealed spaces
      • Combustible wall and floor joist cavities
  • 12. Decorative Material and Interior Finish
    • Interior finish regulated by use group and sprinkler protection
    • Decorative material
      • Noncombustible or flame resistant
  • 13. Vacant and Abandoned Structures
    • Invite illegal activity and vandalism
    • May be occupied by the homeless
    • Codes require these structures to be secured or boarded-up
    • Structures are often broken into and occupied
  • 14. Outdoor Waste Accumulation
    • Trash containers
    • Abandoned construction materials
    • Trees, brush, and vegetation
  • 15. Electrical Fire Safety
    • Maintenance of electrical systems
    • Limit use of temporary wiring
    • Prohibit use of hazardous appliances
    • Ensure access to electrical equipment
  • 16. Extension Cords
    • Grounded cords for grounded appliances
    • Ampacity must meet or exceed capacity of appliance
    • Don’t affix to walls or ceilings
    • Don’t pass through doors, walls, or under rugs
    • Only one appliance per cord
  • 17. Electrical Safety
    • Defective equipment removed from service
    • Tagged
    • Notification of electrical code official
    • Access to electrical equipment
    • Illumination for equipment service areas
  • 18. Smoking
    • Prohibited around
      • Flammable liquids
      • Explosives
      • Piers and wharves
      • Hazardous fire areas (UFC and IFC)
  • 19. Open Flames and Torches
    • “Hot work” permits
      • Cutting and welding
      • Plumbers and soldering
      • Removing paint
      • Clearance to combustibles
      • Extinguisher or hose
      • Fire watcher
  • 20. Fire Department Access
    • Posted fire lanes when any portion of the building is > 150’ from the street or as required by fire official
    • 20’ in width
      • 13’6” vertical clearance
  • 21. Fire Department Access
    • Signs and curb delineation
    • Grade limitations per the jurisdiction
    • Turnarounds
  • 22. Summary
    • Model codes address fire safety by:
      • Preventing fire ignition
      • Limiting smoking and open flames
      • Regulating heating devices and appliances
      • Regulating materials storage and handling
  • 23. Summary
    • Model codes address fire safety by:
      • Managing the impact of fire
      • Maintaining rated construction, FD access, fire protection systems
      • Providing employee training and emergency planning