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HEAD-OF-WALLS. Presenter-Brice Miller 23 years as Building Official, Inspector and Plans Examiner 23 years as Building Official, Inspector and Plans Examiner.

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Presentation on theme: "HEAD-OF-WALLS. Presenter-Brice Miller 23 years as Building Official, Inspector and Plans Examiner 23 years as Building Official, Inspector and Plans Examiner."— Presentation transcript:

1 HEAD-OF-WALLS

2 Presenter-Brice Miller 23 years as Building Official, Inspector and Plans Examiner 23 years as Building Official, Inspector and Plans Examiner Past President of Colorado Chapter of International Code Council (ICC) Past President of Colorado Chapter of International Code Council (ICC) ICBO Education and Certification Committee ICBO Education and Certification Committee ICC Board of International Professional Standards ICC Board of International Professional Standards ICC - IBC General Code Development Committee ICC - IBC General Code Development Committee Code Instructor for Front Range Community College (Part time) for 12 years Code Instructor for Front Range Community College (Part time) for 12 years

3 Program Outline Where firestopping is required Where firestopping is required Codes and Standards Codes and Standards Understanding Underwriters Laboratories Understanding Underwriters Laboratories Different types of Head-of-wall joints Different types of Head-of-wall joints A look at Mechanical Joint Systems A look at Mechanical Joint Systems Plans examiner & Field inspector helpful hints Plans examiner & Field inspector helpful hints

4 Why is Firestopping Required? To compartmentalize and prevent the spread of flame and smoke through a structure during a fire. To compartmentalize and prevent the spread of flame and smoke through a structure during a fire. Mandated by Codes and Standards Mandated by Codes and Standards

5 Where is Firestopping Required? Perimeter Containment Membrane Penetrations Through Penetrations Construction Joints

6 Five Types of Joint Systems Bottom - of – Wall Bottom - of – Wall Floor – to – Floor Floor – to – Floor Floor – to – Wall Floor – to – Wall Wall – to - Wall Wall – to - Wall Head – of - Wall Head – of - Wall

7 A NEED FOR FIRE RESISTIVE HEAD-OF-WALL JOINTS In a typical building there are more square feet of opening at Head-of-Wall joints then there are in through penetrations MGM Grand Hotel One Meridian Plaza First Interstate Bank North Ridge Earthquake

8 International and other Model Code Organizations (MCO) ICC – International Code Council (International Building Code) ICC – International Code Council (International Building Code) ICBO – International Conference of Building Officials (Uniform Building Code) ICBO – International Conference of Building Officials (Uniform Building Code) BOCA – Building Officials and Code Administrators (National Building Code) SBCCI – Southern Building Code Congress International (Standard Building Code)

9 WHERE REQUIRED All top of wall joints to protect the fire- rated assembly Exit Enclosures Exit Enclosures Shaft Enclosures Shaft Enclosures Exit Passageways Exit Passageways Horizontal Exits Horizontal Exits Occupancy Separations Occupancy Separations Incidental Use Areas Incidental Use Areas Fire Walls Fire Walls Fire Partitions Corridor walls Sleeping units Control Areas Atrium Separations Single-Occupancy fire areas

10 CODE REQUIREMENTS IBC Section Fire Resistive Joint systems “Joints installed in or between fire resistance rated assemblies shall be protected by an approved fire-resistant joint system designed to resist the passage of fire for a time period not less than the required fire-resistance rating of the assembly in which it is installed.” Section 713.2: Installation Fire-resistant joint systems shall be securely installed in or on the joint for its entire length so as not to dislodge, loosen or otherwise impair its ability to accommodate expected building movements and to resist the passage of fire and hot gasses

11 HEAD-OF-WALL FIRE RESISTIVE JOINTS Must accommodate structural compression and extension Must accommodate structural compression and extension Maintain the fire resistance properties of the wall and roof/floor structure. Maintain the fire resistance properties of the wall and roof/floor structure. Be tested and listed by an approved agency Be tested and listed by an approved agency

12 Categories of Fire-Resistive Joints Sealant Systems (Caulks) Sealant Systems (Caulks) Sprayed /Elastomeric Membranes (Sprays) Sprayed /Elastomeric Membranes (Sprays) Mechanical Joints Mechanical Joints

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14 Elastomeric Caulk or Spray Roof or Floor Deck Mineral Wool 1/2” Gypsum Wallboard Steel Stud Deep Leg Track Load

15 Roof or Floor Deck Gypsum Wallboard Overlapping Gypsum Wallboard Fire Rated Gypsum Compound Mechanical joint Steel Stud 1”

16 Movement takes place here and here

17 Gypsum Wallboard Fire Rated Gypsum Compound Steel Stud Roof or Floor Deck Mechanical Joint Overlapping Gypsum Wallboard Load

18 U.L & A.S.T.M. E 1966 CYCLE TEST (MOVEMENT) Furnace Test (Hour Rating) Hose Stream Test (Impact/Temperature Shock) Test Standards / Components

19 UL Cycle Class Listings MovementClassMin.# Of Cycles Min. Cycling Rate (Cycles Minutes) Class l (Thermal)5001 Class ll (Wind Sway) Class lll (Seismic)

20 Composition of Mineral Wool Movement Characteristics of Fire Caulks or Sprays Additional Components Stud to Track Connection Properties of Head-of-Wall Fire Resistive Deflection Joints

21 Where Can I Find The Most Current Listing?

22 U.L. LISTINGS NOMENCLATURE HW-D-0060 HW = Head of Wall D = Dynamic (Subject to Movement) 0060 = Nominal Joint Width If starts with “0” (0000 – 0999) = Nom. Joint width < 2” If starts with “1” (1000 – 1999) = Nom. Joint width > 2” and 2” and < 6”

23 Sample U.L. Listing System Number HW-D-???? System Number HW-D-???? Assembly Ratings - 1 & 2 Hrs. (See Item 2) Assembly Ratings - 1 & 2 Hrs. (See Item 2) Nominal Joint Width - 1 in. Nominal Joint Width - 1 in. Class II Movement Capabilities – Class II Movement Capabilities – 18.75%Compression or Extension ACTUAL MOVEMENT IS 3/16” COMPRESSION OR EXTENSION

24 U.L. LISTING/MECHANICAL System Number HW-D-0060 Assembly Ratings - 1, 2 & 3 Hrs. (See Item 2) Nominal Joint Width - 1 in. Class II and III Movement Capabilities - 100% Compression or Extension ACTUAL MOVEMENT IS 1” COMPRESSION OR EXTENSION

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26 Question to Ask! How much movement (compression and/or extension) do I need? FIRE TRAK Everybody else The First and Most Important)

27 NON CODE COMPLIANT HEAD-OF-WALL JOINT

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29 Listed and Tested Head- of-Wall Assemblies View some details that will perform structurally when exposed to fire.

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33 SMOKE BARRIERS Section of the IBC requires an L rating of 5 or less. Section of the IBC requires an L rating of 5 or less. Joints systems in these assemblies needs to be designed and constructed to restrict the movement of smoke. The type of rating used is an L Rating which is a measurement of air leakage rate through a fire resistive joint system or penetration. Joints systems in these assemblies needs to be designed and constructed to restrict the movement of smoke. The type of rating used is an L Rating which is a measurement of air leakage rate through a fire resistive joint system or penetration.

34 Plans Examiners and Inspectors

35 PLANS EXAMINERS As part of your plan review, are you checking the below items as it relates to the Head-of-wall joints: Determine the rate of building deflection ( range of motion) Determine the rate of building deflection ( range of motion) Identify the tested and listed head-of-wall system for every interior non load baring partition. Identify the tested and listed head-of-wall system for every interior non load baring partition.

36 RECOMMENDED CORRECTION NOTICE Deflection and firestop tracks are required to be installed with an approved joint system per section 713 of the IBC. The assemblies need to be designed to allow head-of-wall joints to compress and extend with movement of structure above while maintaining the fire-rating of the assemblies. Deflection and firestop tracks are required to be installed with an approved joint system per section 713 of the IBC. The assemblies need to be designed to allow head-of-wall joints to compress and extend with movement of structure above while maintaining the fire-rating of the assemblies. Please clarify building deflection to determine movement capabilities of assembly and identify listed assemblies for these ceiling runners. Please clarify building deflection to determine movement capabilities of assembly and identify listed assemblies for these ceiling runners.

37 HEAD-OF-WALL INSPECTION IBC CODE REQUIREMENT Section Fire-resistant penetrations. Protection of joints and penetrations in fire-resistance- rated assemblies shall not be concealed from view until inspected and approved Fire-resistant penetrations. Protection of joints and penetrations in fire-resistance- rated assemblies shall not be concealed from view until inspected and approved

38 Field Inspection If the deflection rate is under (1) one inch you may not have to observe the top track until the final inspection. If a mechanical joint is required you will need to: Be provided with the UL listed assembly as approved on the plans. Be provided with the UL listed assembly as approved on the plans. Determine all interior non load baring partitions that require a fire rating and inspect during framing inspection. Determine all interior non load baring partitions that require a fire rating and inspect during framing inspection. Observe the ceiling runner for the U.L label that is located on the side of the mechanical joint system. Observe the ceiling runner for the U.L label that is located on the side of the mechanical joint system.

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40 Engineering Judgments Sources: Third Party Labs (UL) Fire Protection Engineer Professional Engineer Manufacturer Only used when tested systems are not available. The EJ’s Must be based on sound engineering practice and knowledge of both field application and capabilities of system components

41 HEAD-OF-WALLS

42 Call Brice Miller: Visit our website: Brice: How can I or other associates learn more about head-of-wall joints?


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