Leakage Ratings Through Walls, Dampers, Doors, Firestops and Joints Richard N. Walke Underwriters...
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Transcript of Leakage Ratings Through Walls, Dampers, Doors, Firestops and Joints Richard N. Walke Underwriters...
![Page 1: Leakage Ratings Through Walls, Dampers, Doors, Firestops and Joints Richard N. Walke Underwriters Laboratories Inc.](https://reader035.fdocuments.in/reader035/viewer/2022081519/56649ed35503460f94be3031/html5/thumbnails/1.jpg)
![Page 2: Leakage Ratings Through Walls, Dampers, Doors, Firestops and Joints Richard N. Walke Underwriters Laboratories Inc.](https://reader035.fdocuments.in/reader035/viewer/2022081519/56649ed35503460f94be3031/html5/thumbnails/2.jpg)
Leakage Ratings Through Walls, Dampers, Doors,
Firestops and Joints
Richard N. Walke
Underwriters Laboratories Inc.
![Page 3: Leakage Ratings Through Walls, Dampers, Doors, Firestops and Joints Richard N. Walke Underwriters Laboratories Inc.](https://reader035.fdocuments.in/reader035/viewer/2022081519/56649ed35503460f94be3031/html5/thumbnails/3.jpg)
Topics for Discussion• Leakage Ratings for Walls,
Dampers, Doors, Firestops and Joint Systems
• Recent NFPA Code Proposals Relating to Smoke Leakage
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Leakage Ratings
![Page 5: Leakage Ratings Through Walls, Dampers, Doors, Firestops and Joints Richard N. Walke Underwriters Laboratories Inc.](https://reader035.fdocuments.in/reader035/viewer/2022081519/56649ed35503460f94be3031/html5/thumbnails/5.jpg)
HVAC SmokeControl Methods
• Engineered Systems
• Static or Passive Systems
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Walls – UL 263• Air Leakage Assumed to be Smoke
Tight• Standard does not Include
Leakage Ratings
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Dampers – UL 555S• Air Leakage Through Interior of
Damper• Class I, II and III Performance
Levels at Elevated Temperatures• Codes focus on Class II
Performance at 250 F
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Doors – UL 1784• Leakage Determined at 0.1, 0.2
and 0.3 in. WC (25, 50 and 75 Pa)• Tested at Ambient and 400 F• Results Published in cfm per sq ft
of Door Opening
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Firestops – UL 1479• Leakage Determined at 0.3 in. WC
(75 Pa)• Tested at Ambient and 400 F• Results Published in cfm per sq ft
of Opening
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Joints – UL 2079• Leakage Determined at 0.3 in. WC
(75 Pa)• Tested at Ambient and 400 F• Results Published in cfm per lin ft
of Opening
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NFPA Code Changes
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Proposed Leakage Ratings
• Requirements Covers Smoke Barriers Only
• Cumulative Leakage Limited to 0.75 cfm per sq ft of Wall for all Dampers, Doors, Through-Penetration Firestops and Joints
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Contact Information
NBK Architectural ServicesPhone: (847) 272 – 8800, Ext. 40057
Fax: (847) 574 – 4017Email: