Perimeter Joints Fire Protection - sesam-uae.com · UAE Fire Code requirements for Perimeter Joints...
Transcript of Perimeter Joints Fire Protection - sesam-uae.com · UAE Fire Code requirements for Perimeter Joints...
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Perimeter Joints Fire Protection:
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1. Risks of Fire & Smoke spreading (statistics)
2. How to Protect the Perimeter joint
3. How to select the correct system according to testing
4. Correct Vs. Incorrect installation
5. UAE Fire Code requirements for Perimeter Joints Fire Protection
Key Learning Points:
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Fire Statistics
Visibility: 47% of survivors caught in a firecould not see more than 12 feet (3.6 m).
Why must we contain Smoke, Toxic Gases and Fire?
3/4 of all fire deaths are caused bysmoke inhalation.
Approximately 57% of people killed infires are not in the room of the fire’s origin.
Source: Hall, Jr. John R. NFPA Fire Analysis & Research, Quincy, MA. “Burns, Toxic Gases, and other Hazards”.
Source: NFPA Fire Protection Handbook, 18th Ed. Table 1-1P. Pg.1-15.
Source: NFPA Fire Protection Handbook, 18th Ed. Table 8-1P. Pg. 8-17.
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What is the leading killer in fires?
Smoke & Toxic Gases
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Consider this:
• A square room 20 ft x 20 ft x 20 ft has a pencil hole betweencompartments.
• How long will it take for the smoke to fill the room to a thickness suchthat you cannot see your hands 18 inches in front of you?
How Fast Does Smoke Travel?
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Pencil Hole
3 minutes40 seconds
20 ft x 20 ft x 20 ft room
Smoke travels 120-420 feet per minute (36 – 128 m/min), under fire conditionsSource: Estimate based upon ceiling jet velocity calculations for typical ceiling heights and heat release rates.
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The Balanced Approach to Fire Protection
We can’t rely on any single action or safeguardto keep people safe
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2nd Floor
1st Floor
GroundFloor
CurtainWall
Floor Slab
Chimney Effect –Internal Spread
Main Risks in Perimeter Joints:
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1st Floor
2nd Floor
3rd FloorVision glass
Spandrel panel(glass, stone, metal...)
Mullions
Transoms
External Spread – “Leap Frog”
Main Risks in Perimeter Joints:
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Main Risk in Perimeter Joints:
External Spread – “Leap Frog”
Al Tayer Tower – Sharjah 2012 Al Nasser Tower – Doha 2006
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• 3 Main Testing Standards:
1. ASTM E2307: “Standard Test Method for Determining Fire Resistanceof Perimeter Fire Barriers Using Intermediate-Scale, Multi-Story TestApparatus”
2. EN 1364 – Part 3: “Fire resistance of curtain walling systems – fullConfiguration” – Fire Resistant Glazing
3. EN 1364 – Part 4: “Fire resistance of parts of curtain walling” – Non-Fire Resistant Glazing
• NFPA 285: “Standard Fire Test Method for Evaluation of FirePropagation Characteristics of Exterior Non-Load-Bearing WallAssemblies Containing Combustible Components”
Testing Of Curtain Wall Systems:
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ASTM E2307
Standard Test Method forDetermining Fire Resistanceof Perimeter Fire BarriersUsing Intermediate-Scale,Multi-Story Test Apparatus
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ASTM E2307 – Test Assembly
Cross-section view
backface
View from front face
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Curtain Wall TestAssembly
Pre-Burn
Transom above floor
Transom below floor
Mechanical attachmentssupporting insulation
Mineral wool insulation atspandrel area
Mullions
Vision Glass
ASTM E2307 – Test Assembly
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AssemblyInterior View
Pre-Burn
Thermocouplesmeasuring temperaturerise
ASTM E2307 – Test Assembly
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Video
LSSCWBURN.wmv
ASTM E2307 – Test Assembly
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Interior Burner Lit - Time: 0:00ASTM E2307 – Test Assembly
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Exterior Burner Lit - Time: 0:05ASTM E2307 – Test Assembly
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Flames ClimbingExterior
Time: 0:15
ASTM E2307 – Test Assembly
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Melting of Mullions&Transoms
Time: 0:45
ASTM E2307 – Test Assembly
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Vision GlassBreaks
Time: 2:00
ASTM E2307 – Test Assembly
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Burner Off at 2 hours
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Post Test:
Close up Detail of Mullionand Transom Damage
ASTM E2307 – Test Assembly
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Post Test – Interior ViewASTM E2307 – Test Assembly
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Only two labs presently perform testing in accordance withnewly developed ASTM test methods:
ASTM E2307 – Testing Labs
Northbrook, IL Elmendorf, Texas
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Test result: Laboratory listing with very preciseconstruction details
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NFPA 285 – Testing Method
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NFPA 285 – Testing Method
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Perimeter Fire Containment - Basic Design Criteria1. Provide Backing/Reinforcement Member at
Safing Line
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ReinforcementMember
1
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Perimeter Fire Containment - Basic Design Criteria
1. Provide Backing/Reinforcement Member atSafing Line
2. Mechanically Attached Curtain Wall Insulation
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ReinforcementMember
1
2MechanicallyAttachedInsulation(hangers, clips, impalingpins, weld pins,…)
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Perimeter Fire Containment - Basic Design Criteria
1. Provide Backing/Reinforcement Member atSafing Line
2. Mechanically Attached Curtain Wall Insulation
3. Protect Aluminum Mullions
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2
ReinforcementMember
ProtectMullions
3
1
MechanicallyAttached Insulation
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Melting Point ofAluminum - 1220 °F1
(660 °C) (9 minutes)
Sources:1. NFPA Fire Protection Handbook, 18th Ed.
Table 4-16A. Pg 4-183.2. SFPE Handbook of Fire Protection
Engineering, 1st Ed. Table 1-12.1. Pg. 1-166.3. Owens Corning SSL I or II Fiberglas Insulation
specification sheet.
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Perimeter Fire Containment - Basic Design Criteria1. Provide Backing/Reinforcement Member at
Safing Line
2. Mechanically Attached Curtain Wall Insulation
4. Compression-fit Safing Insulation
Install Safing Impaling Clips – if required per tested assembly
Vertical fiberorientation
3. Protect Aluminum Mullions
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2ReinforcementMember
1
MechanicallyAttached Insulation
4
Compression FitSafing & SafingClips (if required pertested assembly)Protect
Mullions
3
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1. Provide Backing/Reinforcement Member atSafing Line
2. Mechanically Attached Curtain Wall Insulation
4. Protect Aluminum Mullions
3. Compression-fit Safing Insulation - as required per tested assembly
Install Safing Impaling Clips - as required per tested assembly
5. For “Smoke Containment” - Add Firestop Coating
Perimeter Fire Containment - Basic Design Criteria
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5 FirestopCoating
2ReinforcementMember
3ProtectMullions
1
MechanicallyAttached Insulation
4
Compression Fit Safing& Safing Clips (if requiredper tested assembly)
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5FirestopCoating
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4”
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33%
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3.2mm13mm
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Traditional Method – 6mm sheet metal top and bottom, filled with mineral wool:
Incorrect Installations:
General Value Proposition
• All voids closed with Fire andAcoustic sealant
Can be valid when
• No movement capabilities
• High Load
• Slow to install
• Not tested
Key Weaknesses
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. Incorrect installation of foil boards leaves space for smoke and flames to passthrough and may fall out
. Foil may be damaged very easily
Incorrect Installations:
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Coated boards are ridged and do notallow movement
Incorrect Installations:
Floorslab
Fire Stop
Fire StopDrops
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Mastic spray
Firestop expands
Floor Slab
Cur
tain
Wal
l
Wall bulges outHeat and Flames
Overlapping:
13mm
13mm
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Incorrect Installations:
Façade
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UAE Fire & Life Safety Code ofPractice
2012 Edition
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UAE Fire Code requirements:
3.2.4. Perimeter fire barriers –Exterior Curtain-wall System
• “3.2.4.5. Perimeter Fire Barrier SystemRatings shall be established inaccordance with ASTM E 2307 or EN1364 Part 3 and 4 or NFPA 285 or otherequivalent tests using the Intermediate-Scale, Multi Story Test Apparatus(ISMA) as the test method”
• “3.2.4.6. The system refers to all thenecessary components and conditionsin the approved firestop design, whichcan include but is not limited to the gapsize, sealant or backing material depth,and other parameters in the listing. ”
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UAE Fire Code requirmeent:
6.8. Installation
“6.8.1. For installation of all the systems,installer shall strictly follow design listedand certified systems including illustrationstherein and manufacturer’s installationinstructions. ”
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Fire with successfulcompartmentation
People with complete trustin the compartmentation
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Questions….?
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THANK YOU
(Protect Yourself & Others)
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ASTM 2307 EN 1364-3 EN 1364-4 BS 8414-1 BS 8414-2
Curtain WallAssembly
Full Full Part Part Part
Glazing Non-FireRated
Fire-Rated Fire Rated &Non-FireRated
N/A Non-FireRated
Internalexposure
Curtain Wall,Insulation &Gap Seal
Curtain Wall& Gap Seal
Curtain Wall& Gap seal(partially)
NotEvaluated asa full system
NotEvaluated asa full system
ExternalExposure
Curtain Wall,Glazing,insulation orCompositePanel
Curtain Wall EvaluatedPartially
curtain Wall,Over-cladding &insulation
Curtain Wall,Glazing,CompositePanel
Movement Cyclingrequirements
N/A N/A N/A N/A
Equipments Internal &ExternalBurners
Internal ORExternalBurner
Internal ORExternalBurner
Internal ORExternalBurner
InternalBurner