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Fire Protection of Construction Joints

Fire Protection of Construction Joints. Answer: Because Joints Move and may present a weakness in fire containment. Question: Why So Much Concern About Fire-Resistive Construction Joints?. Where Do I Find These Applications?. D. A. E. B. C. A – Overall depth of concrete floor assembly

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Fire Protection of Construction Joints

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  1. Fire Protection of Construction Joints

  2. Answer: Because Joints Move and may present a weakness in fire containment Question: Why So Much Concern About Fire-Resistive Construction Joints?

  3. Where Do I Find These Applications?

  4. D A E B C A – Overall depth of concrete floor assembly B – Flute depth C – Joint width D – Minimum concrete depth E - Valley Construction Joint Terminology

  5. Construction Joint Terminology • Assembly Rating • Movement • Nominal Joint Width • Extension • Compression • Percent (%) Extension / Compression • Mineral Wool Compression • Sealant Depth

  6. Tests for Fire Resistance of Building Joint Systems Standards: ASTM E 1966 UL 2079 Test Items: Building Joint Systems Including: • floor-to-floor • floor-to-wall • head-of-wall • wall-to-wall Report: Fire rating in hours, i.e., 1, 2, 3 or 4 hours

  7. Tests for Fire Resistance ofBuilding Joint Systems • ASTM E 1966 & UL 2079 • All Model Building Codes Now RequireCycling per ASTM E 1399 • Time temperature curve (ASTM E 119) • Must meet Assembly Rating (T Rating) criteria • 250° F + ambient average (ASTM E 1966) • Any 1 thermocouple over 325° F + initial temp (UL 2079) • Hose stream applicable to walls and wall tops

  8. Building Construction andMaterials Fire Tests: ASTM E 119 UL 263 NFPA 251 Joint Systems (ASTM E1966, UL 2079) Through-Penetration Firestop: (ASTM E 814, UL 1479) Fire Inside

  9. ASTM E 1399 Cyclic Movement and Measuring the Minimum and Maximum Joint Widths of Architectural Joint Systems RateJoint Type No. of Cycles (Cycles/Min.) Thermal Expansion/Contraction 500 1 Seismic 100 30 Wind Sway 500 10 Combination 100 30 400 10

  10. Joints in Action Floor/wall assembly Backer (Mineral Wool) Firestop Minimum Joint Width: Sealant – Compressed - thickest Mineral wool – Compressed - most dense Nominal Joint Width: Sealant – As installed Mineral wool – As installed Maximum Joint Width: Sealant – Stretched - thinnest Mineral wool – Stretched -least dense

  11. How Firestop Joint Systems are Listed Underwriters Laboratories Inc. Letters FF - Floor to Floor FW - Floor to Wall HW - Head of Wall WW - Wall to Wall D - Dynamic S - Static Numbers 0000 - 0999 < 2” 1000 - 1999 < 2” < 6” 2000 - 2999 < 6” < 12” 3000 - 3999 < 12” < 24” 4000 - 4999 < 24”

  12. For proper installation practices, always refer to manufacturer’s installation instructions and test laboratory listing.

  13. Fluted Deck with Sprayed-On Fireproofing Concrete Fireproofing Wall Parallel to Flutes Concrete Firestop Spray MineralWoolPacking Fireproofing Firestop Spray MineralWoolPacking Fire Rated Block Wall Wall Perpendicular to Flutes

  14. About the IFC The International Firestop Council is a not-for-profit association of manufacturers, distributors and installers of fire protective materials and systems.IFC's mission is to promote the technology of fire containment in modern building construction through research, education and development of safety standards and code provisions. Website - www.firestop.org Email - Info@firestop.org Voting Members

  15. Available educational seminars on our website include….. • Firestop 101 – An introduction to firestopping • Perimeter Curtain Wall Fire Protection • Firestop System Selection • Flexible Duct Wrap Systems • Fire Protection of Construction Joints

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