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Understanding Fire-Rated Assemblies

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This presentation explains the code requirements for active and passive building systems used to protect buildings and their occupants and contents from fire.

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Understanding Fire-Rated Assemblies

  1. 1. Understanding Fire-Rated Assemblies Presented by: Hector Rubio, RA
  2. 2. Governing Codes <ul><li>International Building Code </li></ul><ul><li>California Building Code </li></ul>
  3. 3. Standards, Testing and Certification <ul><li>UL Fire-Resistance Directory </li></ul><ul><li>National Fire Protection Association (NFPA) </li></ul><ul><ul><li>NFPA 80 Standard for Fire Doors and Other Opening Protectives </li></ul></ul><ul><li>Gypsum Association (GA) </li></ul><ul><ul><li>Fire Resistance Design Manual </li></ul></ul>
  4. 4. Standards, Testing and Certification <ul><li>Intertek – Warnock Hersey </li></ul><ul><li>Factory Mutual (FM) </li></ul><ul><ul><li>FM Approval Guide </li></ul></ul>
  5. 5. Code Requirements <ul><li>Occupancy Separations (Table 508.4) </li></ul><ul><li>Building Elements (Table 601) </li></ul><ul><li>Fire Separation Distance (Table 602) </li></ul><ul><li>Fire Barrier Assemblies (Table 707.3.9) </li></ul><ul><ul><li>Fire Partitions </li></ul></ul><ul><ul><li>Smoke Partitions </li></ul></ul><ul><ul><li>Shaft Enclosures </li></ul></ul><ul><li>Fire Doors and Fire Shutters (Table 715.4) </li></ul><ul><li>Fire Windows (Table 715.5) </li></ul><ul><li>Fire Dampers (Table 716.3.2.1) </li></ul>
  6. 6. UL Listed Fire-Rated Assemblies <ul><li>2-hour fire-rated composite floor slab </li></ul><ul><li>UL Design D711 </li></ul>
  7. 7. UL Listed Fire-Rated Assemblies <ul><li>1-hour to 4-hour fire-rated partitions </li></ul><ul><li>UL Design U419 </li></ul>
  8. 8. UL Listed Fire-Rated Assemblies <ul><li>Two-hour fire-rated shaft wall </li></ul><ul><li>UL Design U428 </li></ul><ul><li>Installation from finished side of the wall </li></ul>
  9. 9. Fire-Rated Assemblies <ul><li>Shaft Enclosures </li></ul><ul><ul><li>Stairs / Elevators / Duct Shafts </li></ul></ul><ul><ul><li>Passive protection system </li></ul></ul>
  10. 10. Fire-Rated Assemblies <ul><li>Spray-Applied Fireproofing </li></ul><ul><ul><li>Passive protection system </li></ul></ul><ul><ul><li>Thickness of application determines fire-rating </li></ul></ul>
  11. 11. Testing Standards & Procedures <ul><li>ASTM E119 / UL 263 / NFPA 251 </li></ul><ul><li>Laboratory Mock-Up </li></ul><ul><li>Fire Test – Gas Furnace </li></ul>
  12. 12. Testing Standards & Procedures <ul><li>ASTM E119 / UL 263 / NFPA 251 </li></ul><ul><li>Laboratory Mock-Up </li></ul><ul><li>Fire Test – Glazing Systems </li></ul>
  13. 13. Testing Standards & Procedures <ul><li>ASTM E119 / UL 263 / NFPA 251 </li></ul><ul><li>Laboratory Mock-Up </li></ul><ul><li>Hose Stream Test </li></ul>
  14. 14. Testing Standards & Procedures <ul><li>Labels and Listing </li></ul><ul><ul><li>Listed products are fabricated with permanent labels identifying the type of fire-rated assembly </li></ul></ul><ul><li>Periodic Inspections of Fabrication Plants </li></ul><ul><ul><li>Unannounced inspections of fabrication plants to ensure compliance with listing requirements </li></ul></ul>
  15. 15. Openings in Fire-Rated Assemblies <ul><li>Fire Doors – Swing Type </li></ul><ul><li>Overhead Coiling Fire Doors </li></ul><ul><li>Horizontal Sliding Fire Doors </li></ul><ul><li>Fire Windows and Glazing </li></ul><ul><li>Fire/Smoke Dampers </li></ul><ul><li>Firestopping Pipe Penetrations </li></ul><ul><li>Head of Wall </li></ul>
  16. 16. Openings in Fire-Rated Assemblies <ul><li>Fire Doors – Swing Type </li></ul><ul><ul><li>Self-closing and self-latching </li></ul></ul><ul><ul><li>Magnetic hold-open devices are acceptable </li></ul></ul><ul><ul><li>Manual hold open devices are NOT permitted </li></ul></ul>
  17. 17. Openings in Fire-Rated Assemblies <ul><li>Overhead Coiling Fire Doors </li></ul><ul><ul><li>Concealed above the ceiling </li></ul></ul><ul><ul><li>Surface mounted to the rated wall </li></ul></ul><ul><ul><li>Activated by smoke detector, fire alarm, power failure, or fusible link </li></ul></ul>
  18. 18. Openings in Fire-Rated Assemblies <ul><li>Horizontal Sliding Fire Doors </li></ul><ul><ul><li>Motorized, automatic closing </li></ul></ul><ul><ul><li>Open plan design </li></ul></ul><ul><ul><li>Concealed in pocket until needed </li></ul></ul>
  19. 19. Openings in Fire-Rated Assemblies <ul><li>Horizontal Sliding Fire Doors </li></ul><ul><ul><li>Industrial type with chain and fusible link </li></ul></ul><ul><ul><li>Motorized and self-closing </li></ul></ul>
  20. 20. Openings in Fire-Rated Assemblies <ul><li>Fire Windows and Glazed Walls and Doors </li></ul><ul><ul><li>Passive system </li></ul></ul><ul><ul><li>Safety glazing compliant </li></ul></ul>
  21. 21. Openings in Fire-Rated Assemblies <ul><li>Fire / Smoke Dampers </li></ul><ul><ul><li>Connected inline with the ductwork </li></ul></ul><ul><ul><li>Prevents passage of flame, smoke and heated gasses </li></ul></ul>
  22. 22. Openings in Fire-Rated Assemblies <ul><li>Firestopping Pipe Penetrations </li></ul><ul><ul><li>Intumescent sealants are used to fill the annular space (the gap) between the pipe penetration and the fire-rated assembly. </li></ul></ul><ul><ul><li>Sealant will expand greatly under high temperatures, and </li></ul></ul><ul><ul><li>Closes the opening against the passage of flame and heated gasses </li></ul></ul>
  23. 23. Openings in Fire-Rated Assemblies <ul><li>Firestopping Pipe Penetrations </li></ul><ul><ul><li>Intumescent sealants and caulks – red color for visual inspection </li></ul></ul><ul><ul><li>Sealant expands greatly under high temperatures </li></ul></ul>
  24. 24. Openings in Fire-Rated Assemblies <ul><li>Head of Wall </li></ul><ul><ul><li>Mineral wool insulation fills the void in the flutes </li></ul></ul><ul><ul><li>Intumescent sealant is sprayed across the face of the insulation </li></ul></ul>
  25. 25. Recap <ul><li>Governing Codes </li></ul><ul><li>Standards, Testing and Certification </li></ul><ul><li>Code Requirements </li></ul><ul><li>Fire-Rated Assemblies </li></ul><ul><li>Testing Standards and Procedures </li></ul><ul><li>Protected Openings in Fire-Rated Assemblies </li></ul>
  26. 26. Questions ???

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