Fire and Acoustic Design Manual NOVEMBER 2015 I NEW ZEALAND Contents 2INTRODUCTION 3 7 NZBC CONSIDERATIONS 12 7.1 Structure 12 3 APPLICATION AND SCOPE3 7.2 Load Bearing Of Walls 12 3.1 Application 3 7.3 Bracing 12 3.2 Scope 3 7.4 Durability 12 3.3Responsibility 3 7.5 Fire Performance 12 4 SYSTEM INDEX 6 7.6 Fire Resistance 13 7.7 Internal Linings Group Numbers 13 4.1 Internal walls 6 7.8 James Hardie Cladding Fire Properties 13 4.2 External walls 7 7.9 Vertical Spread of Fire 13 4.3 RAB Board fire rated systems 8 7.10 Internal Moisture 13 4.4 Flooring/ceilings fire rated systems 8 7.11 Thermal Performance 14 5 HOW TO USE THIS MANUAL 9 7.12 Acoustic Performance 14 5.1 Table Data 9 7.13 Airborne Sound 14 5.2 Colour Legend 9 7.14 Impact Sound 14 5.3 James Hardie Fire and Acoustic System Description 9 7.15 Tests And Opinions 14 5.4 STC and Rw 9 7.16 Product Substitution 14 5.5R-values 9 7.17 Compliance 15 5.6 Wall Width 9 7.18 Thermal Fire Batten 15 5.7 Wall Height 9 7.19 Referenced Documents 15 6 DESIGN GUIDELINE 10 8 INTERNAL WALLS 16 8.1 General 16 6.1 General 10 8.2 Continuity and Isolation 16 6.2 Framing 10 6.3 Timber 10 9 EXTERNAL WALLS 20 6.4 Steel 10 6.5 Bottom Plate Fixing 10 6.6 Insulation 11 6.7 Flexible Underlay or Rigid Air Barrier 11 6.8 Expansion and Control Joints 11 6.9 Control Joints 11 6.10 Cladding/Lining Layout and Fixings 12 6.11 Coatings and Finishes 12 10 RAB BOARD 26 11 INTERNAL FLOORS/CEILING 29 12 CONSTRUCTION DETAILS 32 12.1 Framing 32 12.2 RAB Board / Flexible Underlay 32 12.3 Insulation 32 12.4 James Hardie Cladding Or Lining 32 12.5 Cavity Construction 32 12.6 WE VALUE YOUR FEEDBACK To continue with the development of our products and systems, we value your input. Please send any suggestions, including your name, contact details, and relevant sketches to: Ask James Hardie™ Fax 0800 808 988 [email protected] Gib® Standard Plasterboard And Gib Fyreline® Lining 32 12.7 Services Penetrations 32 13 CONSTRUCTION DETAILS 33 13.1 33 James Hardie Fire Rated Soffits Construction 14 SAFE WORKING PRACTICE 40 14.1 41 James Hardie Mineral Insulation 15PRODUCT INFORMATION AND ACCESSORIES 42 PRODUCT WARRANTY 43 2 Introduction This manual provides information about James Hardie two way fire and acoustic systems using timber or steel frames in residential or non residential construction, such as: • Separating walls in multi unit residential buildings or • External walls close to boundaries. In terms of the New Zealand Building Code (NZBC) requirements, fire rating is referred to as FRR (Fire Resistance Rating) and is measured in minutes e.g. a FRR 30/30/30 means a fire rating for 30 minutes. Further explanation regarding this is provided in section 7.6 of this technical specification. 3 A pplication and scope 3.1 APPLICATION The fire and acoustic rated walls described in this specification can be used to meet a wide range of performance requirements to suit most applications as indicated in this section. The following page describes the various James Hardie products that can be used in internal or external fire and acoustic rated walls. The sections have been arranged to allow for quick familiarisation with James Hardie fire and acoustic systems. It is assumed that readers are familiar with the relevant James Hardie cladding and lining product literature. The information provided in this manual includes the specific use of James Hardie fibre cement products in a fire rated and acoustic systems. SPECIFIER If you are a designer / specifier ensure that you are familiar with the approved document for fire and safety, Clause C of the NZBC and check its requirements. Ensure that the information in this document is appropriate for the application you are planning and that you undertake specific design and detailing for areas which fall outside the scope of this manual. INSTALLER If you are an installer ensure that you follow the complete system requirements as mentioned in this literature to achieve the required performance levels. Follow the design, moisture management and associated details and material selection provided by the designer. The systems provided in this manual must be read and installed in conjunction with the project specifications. Any material specified in this manual when substituted may affect the system performance. All James Hardie products shall be installed as per the relevant product technical literature. Make sure your information is up to date When specifying or installing James Hardie products, ensure you have the current manual. If you’re not sure you do, or you need more information, visit www.jameshardie.co.nz or Ask James Hardie™ on 0800 808 868. 3.2 SCOPE For intertenancy partition walls, Villaboard® Lining is a suitable product for use in internal fire and acoustic rated walls. Villaboard Lining can also be used to achieve bracing where required. It can also provide significant bracing strength immediately after the installation. For external walls, a range of James Hardie claddings 6mm or thicker are available which are suitable for use in fire and acoustically rated wall systems. James Hardie fibre cement products acheive better soundinsulated walls that are slimmer than other traditional walling materials. These thinner walls have advantages in multiple residential, units, motels and other similar projects where maximum floor area utilisation is paramount. All James Hardie products are resistant to fire and damage from moisture, cracking and rotting when installed and maintained as per James Hardie’s published literature current at the time of installation. This manual is intended to assist designers in selecting a suitable James Hardie product and to choose a system which will meet their performance requirements. The fire rated system details have also been provided in this manual for the ease of material selection. The fire and acoustic systems provided in this design manual are suitable for residential or non-residential applications. Refer to NZS 3604 to determine framing dimensions and maximum wall heights. Beyond the scope of NZS 3604, a specific engineering design must be carried out. 3.3 RESPONSIBILITY The designer must ensure that the information and details published in this manual are appropriate for the intended application and a specific design is performed for those systems that fall outside the scope of this manual. Ensure that the intent of your design meets the requirements of the NZBC. All New Zealand Standards referenced in this document are current edition and must be complied with. James Hardie conducts stringent quality checks to ensure that any product manufactured falls within our quality spectrum. It is the responsibility of the builder to ensure that the product meets aesthetic requirements before installation. James Hardie will not be responsible for rectifying obvious aesthetic surface variations after the installation of product. Fire and Acoustic Design Manual November 2015 New Zealand 3 The following James Hardie products are classified as ‘Non-combustible’ materials and are suitable for use in fire rated systems specified in this design guide. 4 Villaboard® Lining 6mm and 9mm RAB® Board 6mm Internal lining fixed with butt or flush stopped joints. Refer to Villaboard Lining Installation Manual for information regarding fixing. Rigid Air Barrier suitable to achieve fire ratings regardless of the cladding used with it. Refer to James Hardie Rigid Air Barriers Installation Manual for information regarding fixing. Linea® Weatherboard 16mm James Hardie Weatherboards 7.5mm 16mm thick pre-primed weatherboard where a 90 minute FRR can be achieved. Refer to Linea Weatherboard Technical Specification for information regarding fixing. Weatherboard cladding with a range of finishes available. Refer to James Hardie Weatherboard Technical Specification for information regarding fixing. Linea® Oblique Weatherboard Axon® Panel 9mm 16mm thick pre-primed weatherboard which can be installed horizontally or vertically. Refer to Linea Oblique Weatherboard Technical Specification for information regarding fixing. Pre-primed cladding with subtle vertical lines. Refer to Axon Panel Technical Specification for information regarding fixing. Fire and Acoustic Design Manual November 2015 New Zealand EasyLap™ Panel 9mm Pre-primed cladding with subtle vertical lines. Refer to EasyLap Panel Technical Specification for information regarding fixing. Titan® and ExoTec® Facade Panels 9mm Expressed jointed panels, paint finished for external claddings on residential or commercial projects. Refer to Titan and ExoTec Facade Panel Rainscreen Technical Specification for information regarding fixing. Monotek® Sheet 7.5mm and 9mm Texture coated external cladding. Refer to Monotek Sheet Technical Specification for information regarding fixing. HardieFlex™ Sheet 6mm and 7.5mm External panel cladding with different jointing options available. Refer to HardieFlex Sheet Technical Specification for information regarding fixing. Fire and Acoustic Design Manual November 2015 New Zealand 5 4 System index The following table gives the key information regarding different fire rated and acoustic systems provided in this manual and indicates the page numbers where more descriptive information can be found. All the fire rated systems given in these tables are two way fire rated systems. The information under the 'Reference' column refers to BRANZ report, assessment, or opinion which confirms the fire performance of a system. 4.1 INTERNAL WALLS INTERNAL 30 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEM SYSTEM ARRANGEMENT JAMES HARDIE SYSTEM NUMBER STUD DEPTH (MM) FRR STC RANGE PAGE REFERENCE # JHITVV30 90 30/30/30 43 – 46 16 BRANZ FAR1601 JHIT d VV30 90 x 2 30/30/30 49 – 58 17 BRANZ FR2806 JHITG V30 90 30/30/30 41 – 43 17 BRANZ Opinion 98/1335 INTERNAL 60 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEM 6 JHITVV60 90 60/60/60 43 – 46 18 BRANZ FAR1601 JHIT d VV60 90 x 2 60/60/60 49 – 58 18 BRANZ FR2864 JHITG V60 90 60/60/60 41 – 43 19 BRANZ FR2493 FR2465 Fire and Acoustic Design Manual November 2015 New Zealand 4.2 EXTERNAL WALLS EXTERNAL 30 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEM SYSTEM ARRANGEMENT JAMES HARDIE SYSTEM NUMBER STUD DEPTH (MM) FRR STC RANGE PAGE REFERENCE # JHETJJ30 90 30/30/30 39 – 43 20 BRANZ FAR1601 JHETJL30 90 30/30/30 46 20 BRANZ FAR1831 JHETLL30 90 30/30/30 46 21 BRANZ FR3051 FAR1875 JHETGJ30 90 30/30/30 40 – 42 21 BRANZ Opinion 98/1335 JHETGL30 90 30/30/30 43 22 BRANZ FR3051 FAR1875 JHESGJ30 89 30/30/30 42 – 47 22 BRANZ FR3004 EXTERNAL 60 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEM JHETJJ60 90 60/60/60 42 – 45 23 BRANZ FAR1601 JHETLL60 90 60/60/60 41 23 BRANZ FR3051 FAR1875 JHETVL60 90 60/60/60 49 24 FAR1831 JHETGJ60 90 60/60/60 42 – 43 24 BRANZ FR2493 FR2465 JHESGJ60 89 60/60/60 40 – 42 25 BRANZ FR2719 FR2711 Fire and Acoustic Design Manual November 2015 New Zealand 7 EXTERNAL 90 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEM JHETGL90 90 90/90/90 45 25 BRANZ FAR2807 Dated 31/01/07 STC RANGE PAGE REFERENCE # 4.3 RAB BOARD FIRE RATED SYSTEMS SYSTEM ARRANGEMENT JAMES HARDIE STUD FRR SYSTEM NUMBER DEPTH (MM) JHETGR30 (CLD batten) 90 30/30/30 47 26 BRANZ opinion 98/1335 JHETGR60 (CLD batten) 90 60/60/60 48 26 BRANZ FAR1601 JHETVR30 (CLD batten) 90 30/30/30 49 27 BRANZ FR2494 JHETVR60 (CLD batten) 90 60/60/60 49 27 BRANZ FR2494 JHETGR30 90 30/30/30 42 28 BRANZ opinion 98/1335 JHETGR60 90 60/60/60 42 28 BRANZ FAR1601 4.4 FLOORING/CEILINGS FIRE RATED SYSTEMS SYSTEM ARRANGEMENT 8 JAMES HARDIE SYSTEM NUMBER FLOOR JOIST DEPTH (MM) FRR STC/IIC PAGE REFERENCE # JHFTSJ30 178 30/30/30 46 / 33 29 FAR3572 JHFTSJ60 231 60/60/60 48 / 32 29 FAR3572 JHFTSJ60 485 60/60/60 50/43 30 FAR3572 JHFTSJ90 247 90/90/90 45 / 33 30 FAR3572 Fire and Acoustic Design Manual November 2015 New Zealand 5 H ow to use this manual 5.1 TABLE DATA The following table explains how to read the information provided for each system: SYSTEM NUMBER MINIMUM MANDATORY REQUIREMENT OPTIONS AND OTHER INFORMATION WALL SECTION SOUND ATTENUATION DATA The following letters may be used to generate a unique number to fully describe a cladding or a lining product used in a FRR system: J — Any James Hardie cladding or lining material as per the scope of this manual R — RAB Board X — HardieFlex Sheet M — Monotek Sheet T — Titan Façade Panel A— Axon Panel L — Linea Weatherboard W— James Hardie Weatherboards V — Villaboard Lining G — GIB® Plasterboard (G is generally used in James Hardie system to identify the use of a GIB® product). S— Secura Interior Flooring 5.2 COLOUR LEGEND The last two digits indicate the fire resistance rating in minutes. Section drawings have been used in each table using the following colour legend. Returning to the earlier example, JHETJJ60 means this is a James Hardie external fire rated system that uses a standard timber frame with a James Hardie cladding on one face and a James Hardie lining on the other face and the fire rating achieved is up to 60 minutes. FIRE RETARDANT FLEXIBLE UNDERLAY THERMAL FIRE BATTENS J = ANY JAMES HARDIE CLADDING OR LINING PER SCOPE 5.4 STC AND Rw G = GIB Fyreline® Tested or modelled Rw and STC data is indicated in the shaded cells provided for each system. Refer to section 7.12 and 7.13 for the description of methods used to calculate the acoustic performance. RAB® BOARD 5.5 R-VALUES V = VILLABOARD LINING ® 5.3 JAMES HARDIE FIRE AND ACOUSTIC SYSTEM DESCRIPTION A comprehensive range of FRR timber framed and steel framed wall systems are included in this manual. Each FRR system is identified by unique nomenclature preceded by the letters JH (e.g.JHETJJ60) to identify it as one of the James Hardie fire resistance rated wall systems. The explanation of system nomenclature used is as follows: • After JH the first letter defines the application I — Interior system only E — Exterior system only F — Floor system only • After JH the second letter describes the framing material used with a subscript, “d” denoting double studs. T — timber frame S — steel frame • After JH, the third and fourth letter describes the material used on each side respectively. A subscript “g” identifies the James Hardie product is fixed over plasterboard on both sides. J is used to indicate the use of a James Hardie product in a FRR system. R-values provided in this manual for external walls have been calculated considering the thermal conductivity of each material and their thickness used in the construction of a wall. The insulation specified in external fire rated systems is a minimum requirement to achieve the desired fire rating performance. For options that would only marginally increase the R-value (e.g.1.5mm increased cladding sheet thickness) has been ignored and the lowest value is presented for simplicity. The fire rated systems, where a fibreglass R2.2 insulation has been specified, can be replaced with a higher R‑value fibreglass insulation material to achieve higher insulation (R-value) requirements. 5.6 WALL WIDTH Wall thickness data has been presented for comparative purposes. This is a theoretical figure which excludes construction tolerances and finishes. The nominal wall width figure is based on the product thickness used on each side of the wall. 5.7 WALL HEIGHT The fire rated systems specified in this manual are suitable for a maximum stud height of 3m. For maximum wall heights of boundary fire rated walls, refer to figure 1. Fire and Acoustic Design Manual November 2015 New Zealand 9 6 D esign guideline 6.1 GENERAL To achieve the performance levels as described in each system, all materials as specified in the system must be used. The basic information regarding the materials to be used can be found in the individual system, section 8 for internal walls and section 9 for external walls. Information about James Hardie materials are outlined in various tables. The following section outlines the minimum specifications of other related components. 6.2 FRAMING The frame sizes and spacing mentioned in this manual are a minimum requirement. Bigger framing sections either required to suit a proprietary cladding system or to suit higher wind pressures, will not affect the FRR, provided that the other system requirements presented in this manual are adhered to. Higher levels of timber treatments or steel coating to enhance their durability will not alter the fire or acoustic performance of the systems. Sheet set-out must be determined by the designer including the location of all expansion and control joints to enable correct framing set-out (these must be in accordance with the relevant James Hardie product literature). 6.3 TIMBER Timber framing must either be in accordance with NZS 3604 or in accordance with specific engineering design (SED) as per AS/NZS 1170 and NZS 3603 standards. The stud, nogs / dwangs and floor joist spacing, timber size must meet the following minimum requirements: For internal walls: • Minimum framing of 90 x 45mm shall be used. • Maximum stud spacing 600mm. • Maximum nogs / dwangs spacing of 800mm. • Minimum framing depth as per fire and acoustic system selected or the structural requirements whichever is greater. • All sheet edges must be supported by framing timber. • Timber framing treatment to comply with the minimum requirements of NZS 3602. • When framing at 140 x 45mm the maximum stud spacing 600mm. For external walls: • Minimum framing of 90 x 45mm shall be used. • Maximum stud spacing 400mm. • Maximum nogs / dwangs spacing of 800mm. • Minimum framing depth as per fire and acoustic system selected or the structural requirements whichever is greater. • All sheet edges must be supported by framing timber. • Timber framing treatment to comply with the minimum requirements of NZS 3602. • When framing at 140 x 45mm the maximum stud spacing 600mm. 10 Fire and Acoustic Design Manual November 2015 New Zealand For floors: • Minimum 45mm wide floor joists shall be used. • Strutting of floor joists is required as per NZS 3604. • Bottom plate fixing in timber floors must penetrate through floor into joists or solid blocking. 6.4 STEEL Steel framing for fire rated walls must be in accordance with NASH standard for residential and low rise buildings and AS/NZ 1170 standards. The framing shall also meet the following requirements: • Steel sections shall be galvanized/zinc coated and have a base metal thickness (BMT) 0.55mm minimum for non-load bearing walls and 0.75mm minimum for load bearing walls and 1.6mm maximum. • The minimum size for steel stud framing to be used in external walls shall be minimum 89mm deep x 36mm wide. • Maximum stud spacing 400mm c/c. • Maximum nogs / dwangs spacing 800mm c/c. • Steel frame must comply with the durability requirements of NZBC. • For jointing of the flat sheet products, double studs securely fastened together must be provided where a higher framing width is required. All sheet edges must be supported by framing. Steel sections thicker than those sound tested may adversely affect the predicted sound ratings of a system. Emergency fire load capacities for steel framed walls require special calculation. Refer to section 7.2 for further information. All steel framing must be used according to their manufacturer’s instructions. Steel framing properties vary considerably depending upon the grade of steel used. It is the designer’s responsibility to ensure the type of framing selected is fit for purpose and suitable to carry design loads. Expressed or open jointed cladding must not be used over steel frame. 6.5 BOUNDARY WALL – POST FIRE STABILITY The fire rated walls built close to boundary are required to achieve post fire stability as per section 2.2.4 of B1/VM1 of the NZBC. James Hardie has developed a design solution for a 2.4m stud height. The bottom plate of this wall can be fixed in accordance with Figure 1 and 2 of this design manual using Pryda Brace Anchor on either side of the stud. These fixings ensure that when boundary wall is exposed to post fire face loads it doesn’t collapse in any direction, or contact the project structural engineer for an alternate design to achieve post fire stability. 6.6 INSULATION Fibreglass Insulation Where R2.2 fibreglass insulation is specified in a system, any brand of R2.2 fibreglass insulation which weighs 14–18kg/m3 may be used. This insulation can be substituted with a higher R-value fibreglass insulation to achieve higher insulation requirements. James Hardie Mineral Insulation In a fire rated system where a mineral insulation is specified, only James Hardie Mineral Insulation must be used. James Hardie Mineral Insulation cannot be substituted with any other insulation material. Also refer to clause H1 of the NZBC for further information on construction R-value requirements. 6.7 FLEXIBLE UNDERLAY OR RIGID AIR BARRIER All external walls must have a flexible underlay or a rigid air barrier installed beneath the claddings. In a FRR system, any flexible underlay that complies with Table 23 of E2/AS1 and has a Flammability Index not exceeding 5, when tested to AS 1530.2 may be used. James Hardie RAB Board will provide superior thermal insulation, air tightness performance when compared with flexible underlays. Installation of a flexible underlay or rigid air barrier must be in accordance with their manufacturer’s recommendations and this manual. RAB Board can be used to achieve the published fire ratings in James Hardie systems where 6mm or thicker James Hardie cladding is specified. 6.8 EXPANSION AND CONTROL JOINTS Expansion joints are generally required for long continuous walls/ structures and need to be specified by the project engineer. All expansion joints must extend through the cladding and wall framing. The control joints provided in certain types of cladding or lining products are a necessity to maintain the system’s integrity and must be formed as per the product’s technical literature. Some common construction details can be found in section 13 of this manual. 6.9 CONTROL JOINTS Horizontal control joints in claddings shall be provided at all floor joist levels as per the relevant James Hardie product technical specification. Vertical control joints must be installed as per the James Hardie product technical literature. It is not necessary for all claddings to have vertical control joints e.g. Linea Weatherboard and James Hardie Weatherboards do not require vertical control joints. Villaboard Lining control joints must be provided as recommended in the Villaboard Lining technical literature. 6.10 CLADDING/LINING LAYOUT AND FIXINGS The product layout and its installation must be in accordance with the relevant James Hardie product literature for the cladding / lining selected. The cladding/lining fixings must be as per the information below. Refer to relevant James Hardie product technical literature for further installation details: • Villaboard Lining fixed at 150mm centres maximum as per Villaboard Lining Installation Manual. When Villaboard Lining is installed over plasterboard, the fixing must be increased in length by the thickness of the plasterboard. • RAB Board fixed at 150mm centres maximum as per James Hardie Rigid Air Barriers Installation Manual. • HardieFlex Sheet fixed at 150mm centres maximum. Refer to HardieFlex Sheet Technical Specification for further information. • Monotek Sheet fixing not exceeding 150mm centres. Refer to Monotek Sheet Technical Specification for further information. • Linea Weatherboard face fixed at each stud. Refer to Linea Weatherboard Technical Specification. • Linea Oblique Weatherboard fixed at each stud. Refer to Linea Oblique Weatherboard technical specification. • Titan and ExoTec Facade Panel fixed at 150mm centres maximum. Refer to Titan and ExoTec Facade Panel Rainscreen Technical Specification (Timber Cavity Battens). • When installing Titan Facade Panel, Stria Cladding, EasyLap Panel or Axon Panel over CLD Structural Cavity Battens, RAB Board must be used to achieve fire ratings. • James Hardie Weatherboards fixed at each stud. Refer to James Hardie Weatherboards Technical Specification. • Axon Panel fixed at 150mm centres maximum. Refer to Axon Panel Technical Specification. • GIB Fyreline® fixed as per table below and Figure 4 and Figure 5 noted within this design guide. Fixing claddings / linings to steel framing requires a steel screw which should be selected considering the thickness of cladding, steel frame and thermal fire batten. The minimum penetration in steel frame must be 15mm. All FRR systems must be mechanically fixed. All bracing systems must be fixed in accordance with the James Hardie technical literature for the selected bracing system using stainless steel nails. James Hardie cladding or lining products can be used to achieve fire rating and structural bracing simultaneously. GIB FYRELINE® FIXING REQUIREMENTS • 300mm centre around the sheet perimeter and intermediate studs • Fixings to be 12mm from bound sheet edges and 18mm from sheet ends TIMBER FRAMING 10mm GIB Fyreline® 41mm x 6g GIB® Grabber High Thread Drywall Screws or 40 x 2.8mm GIB® nails 13mm GIB Fyreline® 41mm x 6g GIB® Grabber High Thread Drywall Screws or 40 x 2.8mm GIB® nails 16mm GIB Fyreline® 51mm x 7g GIB® Grabber High Thread Drywall Screws Fire and Acoustic Design Manual November 2015 New Zealand 11 6.11 COATINGS AND FINISHES All James Hardie cladding systems require protective coatings to meet the NZBC requirements. Refer to relevant James Hardie technical literature for the product selected. All claddings must be maintained in accordance with product literature. Also refer to coating manufacturer’s recommendations. For FRR systems with surface finishes over 1mm thick, designers must ensure that the finishes comply with the requirements of Section 5.8 clause C/AS2 to C/AS7 of the NZBC. James Hardie claddings have been tested and assessed as ‘Non-Combustible’ materials and meet the requirements of clause C3.7 of the NZBC. 7 N ZBC considerations Where; Capacity — is the normal design load bearing capacity of steel stud at ambient temperatures. Applied load — is load at the time of fire. FRR (NLB) — is the FRR of the initial system in minutes selected. FRR (LB) — is the calculated FRR of the load bearing system. 7.3 BRACING The bracing systems specified in James Hardie Bracing Design Manual can easily be combined with the fire and acoustic systems by adhering to the details outlined for the relevant bracing and fire and acoustic systems. Bracing cannot be achieved when claddings are fixed with screws or when steel framing is used. 7.4 DURABILITY The following performance issues have been considered when designing James Hardie Fire and Acoustic systems. Only a brief outline of the key areas in the NZBC that need to be considered when selecting fire and acoustic systems are provided in this document. It is the designers’ responsibility to familiarise themself with the requirements of the NZBC and select the correct system for the project. Designers need to be particularly familiar with the Approved Documents for the NZBC Fire Safety Clause C to determine fire safety requirements to be followed for their project. James Hardie fire rated systems comply with the durability requirements of the NZBC, when installed, finished and maintained in accordance to James Hardie product technical literature. It is the engineer’s or designer’s responsibility to ensure that the details and materials specified for the project are suitable to meet the intended durability requirements of the project. 7.1 STRUCTURE Table 3 When fire rated systems are combined with bracing systems then the durability of the components must meet the 50 year durability requirement. General structural requirements for framing have been covered under the framing section of this manual. Exposure conditions and nail selection prescribed by NZS 3604 7.2 LOAD BEARING OF WALLS NAIL MATERIAL Refer to NZS 3604 for framing size and wall height for load bearing and non-load bearing walls. Beyond these limits a specific engineering design is required. Zone D Zone C outside sea spay zone and Zone B and geothermal hot spots Bracing - all zones Grade 316 Stainless Hot-dipped galvanised or 316 stainless Grade 316 Stainless The information about structural loading capacity achieved during a fire test is available to engineers using AS/NZS 1170 design standards, Ask James Hardie on 0800 808 868 for further information. The load bearing of the steel framed walls are either based on actual test data or assessments that restricts the temperature rise of steel stud sections. To make accurate predictions the information about load bearing capacity of a steel stud at ambient temperatures and applied load during a fire test is required. The fire rating of a load bearing steel frame wall can be calculated by referring to a non load bearing system information as per the following equation. You can also refer to BRANZ ‘Design of Light Framed Walls for Fire Resistance’ bulletin no.138 for further information. 12 FRR (LB) = FRR (NLB) x (1 – Applied Load KN/stud / Capacity KN/stud) x FRR (NLB). Fire and Acoustic Design Manual November 2015 New Zealand In addition to James Hardie specifications, particular attention must be given to adhere with project design advice and the manufacturers instructions to achieve satisfactory durability of performance materials. 7.5 FIRE PERFORMANCE To determine the fire performance required from various walls and floor/ceiling elements of a building, the designer needs to consider the Approved Documents — ‘Protection from Fire’ Clause C of the NZBC. A fire engineer may be required to evaluate the fire safety requirements for a building depending upon its type/scope and the user group. 7.6 FIRE RESISTANCE Working through the Approved Documents will determine the fire resistance rating required for walls that separates the fire cells. These ratings are expressed as Fire Resistance Rating (FRR) of a wall in minutes. Most fire rated systems included in this publication round the values back to the nearest 15 minutes. The fire engineers may occasionally need to use the actual value in some applications. If this information is required, Ask James Hardie on 0800 808 868. only applies to James Hardie fibre cement lining products without paint or wet finish. Contact the surface finishes supplier for Group Number information about their product. Our prefinished linings such as HardieGlaze Lining, Invibe panel and Inraw panel have also been tested/assessed and they have a ‘Group Number 1-S’. This means that James Hardie lining products are suitable for use as internal linings in exitways and all occupied spaces in schools, hospitals, detention centres, offices, hotels, motels and apartments type buildings etc. In the event of a fire, the fire walls provide the occupants with sufficient time to escape to safety, prevent spread of fire to neighbouring property, and allow fire extinguishing operations to be completed by ensuring the wall maintains sufficient Stability, Integrity and Insulation for that period. ‘Group Number 1-S’ is the highest performance expectation under ‘Part 4. Control of Internal Fire and Smoke Spread’ clause C/AS2 to C/AS7 of the NZBC. It means a James Hardie product can be specified for use in any risk group application. If the project requires a wall to achieve a FRR of 60/60/60 (i.e. Stability/Integrity/Insulation) the wall will have the following characteristics: 7.8 JAMES HARDIE CLADDINGS – NON-COMBUSTIBLE • The first 60 figure describes the wall’s structural stability requirement for 60 minutes. Within this period the wall must support the structure and other fire rated elements within the same or other fire cells. A dash here indicates the wall is not a structural wall (this is typical for non-load bearing systems such as partition walls). • The second 60 figure describes the wall’s integrity requirement for 60 minutes. During this period the hot gases or flames can not pass through the wall to either side. After this period a failure has occurred as the wall system under test develops cracks or openings through which hot gases and smoke can pass. • The third 60 figure describes the wall’s insulation requirement for 60 minutes. After this period a failure has occurred in the wall system under test, when: a) the average temperature of the unexposed surface of the test specimen increases by more than 140˚C above the initial temperature, or b) the temperature at any point on the unexposed surface increases by more than 180˚C above the initial temperature. A dash here would indicate that no insulation rating as temperatures are higher than outlined early in the test. Such a system is allowed in external FRR walls that are sufficiently spaced from boundaries. The James Hardie Fire and Acoustic systems allow a wide range of framing methods and architectural systems to achieve FRR from 30/30/30 to 90/90/90. When specific fire safety design is required for a specialist application, fire engineers may Ask James Hardie on 0800 808 868 for further information. 7.7 INTERNAL LININGS GROUP NUMBERS The internal lining materials are required to be tested as per ISO 9705 or ISO 5660 in order to identify their ‘Group Number.’ All James Hardie internal linings such as Villaboard Lining and HardieGroove Lining have been tested/assessed by BRANZ and they have a ‘Group Number 1-S’. Note that this classification For non-combustible products that aren’t James Hardie, these must comply with the requirements of Paragraph 5.4 of the NZBC Acceptable Solution C/AS1 and Paragraph 5.8.1 of Acceptable Solutions C/AS2 to C/AS6 of the NZBC. The heat release rate of James Hardie cladding material is required to be tested in order to establish their suitability when used in boundary walls. James Hardie claddings used in the design manual have been assessed as per Appendix C C7.1 of clause ‘Protection from Fire’ of the NZBC. Based on this assessment James Hardie fibre cement products such as Linea Weatherboard, Stria Cladding and Axon Panel, Titan Facade Panel, HardieFlex Sheet, Monotek Sheet and James Hardie Weatherboards etc. qualify as a ‘Non-Combustible’ material and are suitable for use in fire rated walls close to boundaries. When using a surface finish thicker than 1mm over James Hardie cladding, check with the coating supplier regarding the suitability of their surface finish. 7.9 VERTICAL SPREAD OF FIRE According to E2/AS1 wall claddings are required to be installed either direct fixed to the framing or over the cavity battens depending on the risk score. The fire ratings published in this document are not affected whether the cladding is direct fixed or fixed over a drained cavity. When using the cavity construction method in mixed use buildings with different tenancies one above the other eg apartments, offices, retail etc, the external walls must not allow vertical fire spread through the cavity. In this case the cavity behind the claddings is blocked off by running a horizontal drainage cavity batten at the floor level i.e. at the boundary of two fire cells and a ‘Z’ flashing is installed. Inter-storey junction details have been provided in this literature to achieve FRR and acoustic performance levels. Refer to Figure 3. 7.10 INTERNAL MOISTURE The FRR system published in this literature sets a minimum requirement of R-value for bulk insulation to be used to achieve the fire ratings published in this literature. The E3 — ‘Internal Moisture’ and H1 — ‘Energy Efficiency’ clauses of the NZBC require the external walls of most buildings to have minimum R-values as per the NZS 4218 to prevent Fire and Acoustic Design Manual November 2015 New Zealand 13 condensation and control the energy losses. 7.11 THERMAL PERFORMANCE The R-values provided for different systems has been calculated for the complete wall construction using ‘Verification Method’ NZS 4214 and James Hardie Mineral Insulation actual test data. The calculation is based on studs at 400mm centres maximum and nogs at 800mm centres maximum. The density of this product is @ 60kg/m3. This manual has both Rw and STC values for internal and external systems. External noise control in an application generally falls under the Resource Management Act and little published guidance on how to determine effective sound attenuation for external walls has been available. The acoustic designer must consider all sound flanking paths for effective external noise control in a project. 7.12 ACOUSTIC PERFORMANCE 7.14 IMPACT SOUND ‘Airborne and Impact Sound - G6’ an Approved Document of NZBC requires that ‘buildings shall be provided with adequate noise control in common walls, floors and other elements between occupancies, habitable spaces and other occupancies or common spaces’. The performance criteria requires that the sound transmission class (STC) of walls be no less than 55 and the Impact Insulation Class (IIC) for floors be no less than 55. An impact performance criterion as per the NZBC is applicable to floor systems. James Hardie products such as Secura™ Interior Flooring have been commonly used in floors by acoustic engineers to improve its impact sound performance which is measured in IIC. The sound attenuation performance of ceilings is measured in STC. The IIC and STC for some common floor / ceiling systems have been given in the system details provided in this manual. James Hardie Mineral Insulation has been tested at BRANZ to verify its physical properties and the tests indicate the following thermal resistance value. James Hardie Mineral Insulation 90mm = 2.54m2K/W. The NZBC performance criteria set a minimum requirement which may not be adequate for certain types of multi unit dwelling. Similarly many external walls may need better sound attenuation according to occupants and Resource Management Act requirements. James Hardie products can be used to achieve high sound attenuation ratings and values are presented in this manual for a range of fire rated and acoustic systems. This will help the designers to make an informed decision on the most convenient way to improve noise control for a wide range of internal and external wall applications. If attention is paid in eliminating structural bridging at location of services, flanking paths and quality of workmanship, performance laboratory results may be achieved on site. There are a number of details in section 13 of this manual to assist designers. Designers can be assured of getting better onsite results if they specify systems that have higher initial ratings and are simple to construct. Appliances, TVs and speakers should not be mounted on or near inter tenancy walls to avoid transmission of sound by vibration into the structure. 7.13 AIRBORNE SOUND The New Zealand Standards authority published AS/NZS 1276.1 (ISO 717-1) for the calculation of Rw and Rw, tr (weighted sound reduction indices) values for airborne sound attenuation. These values are derived by testing and calculation in a similar way as the STC values are calculated and are an international update of this older sound attenuation rating system. Generally, but not always, Rw ratings are slightly more difficult to achieve and are more conservative and give a lower value than the STC rating for a given construction. This is because they 14 consider a broader spectrum of noise with emphasis on the more difficult to manage lower frequencies. The Rw value can also be used as a reference for attenuating some forms of external noise. Rw value testing can also be expanded to cover a different band of external noise sources and is then denoted by the additional subscript tr. Depending on the ISO document this can be written as Rw+Ctr, Rtr,w and Rw, tr. Fire and Acoustic Design Manual November 2015 New Zealand 7.15 TESTS AND OPINIONS General James Hardie continuously develops and introduces new systems and reserves the right to improve those presented in this manual. Fire James Hardie Fire and Acoustic systems have been tested at BRANZ or have been developed using the test data from various fire tests conducted and by the opinion of qualified fire engineers. The reference number of tests or opinion/assessments have been provided in Tables 4.1, 4.2 and 4.3. Sound Where required for compliance with clause G6 of the NZBC (STC > 55) James Hardie Fire and Acoustic systems have been tested at the Acoustic Testing Service, University of Auckland, or have been conservatively derived by technical opinion from acoustic consultant Marshall Day Acoustics. Data values have been either tested or derived from models created from the test data by Marshall Day and Associates and where modelled the data has an expected accuracy of ± 3 points. 7.16 PRODUCT SUBSTITUTION The fire and acoustic performance, durability and maintenance requirements of alternative proprietary products cannot be assured by James Hardie. Many apparently identical products were tested and rejected before selection of materials for use in the systems in this manual. Where flexibility is possible it has been reflected in the appropriate system. When a product specified in a system as per this manual is substituted, the performance of the system will be compromised. Therefore the materials specified in the system must not be substituted. 7.19 REFERENCED DOCUMENTS 7.17 COMPLIANCE NZBC approved documents If the systems are constructed as presented in this manual without substitution or alteration then James Hardie has in the form of this manual presented a producer statement to confirm the performance of systems to the tested standards. James Hardie cannot provide opinions for actual site performance or for systems that deviate from this manual. James Hardie recommends that the specifications materials and systems presented in this manual be strictly adhered to, to avoid building consent and compliance difficulty. 7.18 THERMAL FIRE BATTEN Fire battens are used on all FRR steel stud systems and must be used between James Hardie cladding and steel framing face. For steel framing in interior/exterior applications the NZBC also requires additional external insulation to achieve adequate thermal resistance. These insulated battens are assembled on site by cutting a 100mm wide strip from 9mm thick Monotek Sheet and adhering a 10mm thick XPS (Extruded Polystyrene) on the face. All fire battens are fixed horizontally and vertically to all steel faces. All battens must be neatly cut and tightly fitted covering all steel faces. All Thermal Fire Battens must be fitted with the polystyrene to the outside face. The batten is tacked to the steel framing as shown in the following detail. Battens shall be fixed with a screw to steel frame. Thermal Fire Batten Fixing Documents referenced in this manual are current edition and must be complied with. B1 — Structure, B2 — Durability, C — Protection from Fire, C4 — Structural Stability during Fire, E2 — External Moisture, E3 — Internal Moisture, G6 — Airborne and Impact Sound, H1 — Energy Efficiency. Standards AS/NZS 1276.1 (ISO 717-1), Airborne sound insulation NZS-AS 1530.2 Test for flammability of materials AS/NZS 1530.3, Simultaneous determination of ignitability, flame propagation, heat release and smoke release AS/NZS 3837, Method of test for heat and smoke release rates for materials and products using an oxygen consumption calorimeter AS/NZS 4200.1, Pliable building membranes and underlay. Part 1, Materials AS/NZS 4600, Cold formed steel structures NZS 3602, Timber and Wood Based Products for use in Building NZS 3603, Timber Structures Standard NZS 3604, Timber-framed Buildings NZS 3404, Steel Structural Standard NZS 1170, Structural Design Actions Standard NZS 4214, Methods of Determining the Total Thermal Resistances of parts of Buildings NZS 4218, Energy Efficiency – Housing and Small Building Envelope. Others BRANZ, Bulletin 402, Levels of Finish for Flush - Stopped Linings. “Design of Light Framed Walls for Fire Resistance”, Reprint No.138. “Design of Load bearing Light Steel Framed Walls for Fire. Resistance”, August 1995, School of Engineering, University of Canterbury, Christchurch. GIB® Fire Rated Systems, Winstone Wallboards Limited. GIB® Noise Control Systems, Winstone Wallboards Limited. Fire and Acoustic Design Manual November 2015 New Zealand 15 8 Internal walls 8.1 GENERAL 8.2 CONTINUITY AND ISOLATION All interior walls using Villaboard Lining are impact resistant, moisture resistant and achieve high levels of noise control in a minimal space. With Villaboard Lining FRR systems design flexibility with a variety of finishes is maintained while the FRR is substantially achieved by the complete wall. To achieve the required fire protection and sound attenuation on site, it requires informed design by the engineer/designer as he/she deals with the challenges of attaining adequate structural support and bracing while satisfying space utilisation requirements and the separation required for sound control. The engineer must consider the noise transmission issues when dealing with wall junctions/joints and penetrations. An innocuous tie to gain structural stability can significantly reduce a system’s sound attenuation capability. Inter-tenancy walls present challenges to both designers and builders. Sufficient consideration to following issues must be given by all involved in the project. All dimensions shown in tables are in millimetres. The designer must also ensure the fundamental rules of continuity and isolation for adequate fire and acoustic performance are adhered to. The builder also needs to adhere to seemingly insignificant details to be assured of performances approaching those achieved in a laboratory. James Hardie have provided various solutions for achieving structural support, continuity of fire protection and maintaining sound isolation simultaneously, which are detailed in section 13 of this manual. INTERNAL 30 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEMS FRR 30/30/30 JHITV V 30 • 6mm or thicker Villaboard Lining both sides Refer to Villaboard Lining Installation Manual for information regarding fixing. • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 OPTIONS Stud depth (mm) Villaboard Lining thickness (mm) 90 6 9 6mm Villaboard Lining 43/44 45/45 9mm Villaboard Lining 45/45 46/46 102 108 Wall Width (mm) RW / STC Rating 16 Fire and Acoustic Design Manual November 2015 New Zealand FRR 30/30/30 JHITdV V 30 • 6mm or thicker Villaboard Lining both sides Refer to Villaboard Lining Installation Manual for information regarding fixing. • James Hardie Mineral Insulation 90mm in one frame • Timber framing as per section 6.3 OPTIONS Stud depth (mm) Villaboard Lining thickness (mm) 90 6 9 6mm Villaboard Lining 49/51 53/55 9mm Villaboard Lining 53/55 56/58 217 223 Wall Width (mm) RW / STC Rating FRR 30/30/30 JHITGV30 • 6mm or thicker Villaboard Lining one side Refer to Villaboard Lining Installation Manual for information regarding fixing. • 10mm GIB Fyreline® one side fixed as per section 6.10 • R2.2, Fibreglass Insulation infill • Timber framing as per section 6.3 OPTIONS Stud depth (mm) 90 Villaboard Lining thickness (mm) 6 9 6mm Villaboard Lining RW Rating 41 43 9mm Villaboard Lining STC 42 43 Wall Width (mm) 106 109 Fire and Acoustic Design Manual November 2015 New Zealand 17 INTERNAL 60 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEMS FRR 60/60/60 JHITV V 60 • 6mm or thicker Villaboard Lining both sides Refer to Villaboard Lining Installation Manual for information regarding fixing. • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 OPTIONS Stud depth (mm) Villaboard Lining thickness 90 6 9 6mm Villaboard Lining 43/44 45/45 9mm Villaboard Lining 45/45 46/47 102 108 Wall Width (mm) RW / STC Rating FRR 60/60/60 JHIT d V V 60 • 6mm or thicker Villaboard Lining both sides Refer to Villaboard Lining Installation Manual for information regarding fixing. • R2.2 Fibreglass Insulation in one frame • James Hardie Mineral Insulation 90mm in one frame • Timber framing as per section 6.3 OPTIONS Stud depth (mm) Villaboard Lining thickness one side (mm) 90 6 9 6mm Villaboard Lining 49/51 53/55 9mm Villaboard Lining 53/55 56/58 217 223 Wall Width (mm) RW / STC Rating 18 Fire and Acoustic Design Manual November 2015 New Zealand FRR 60/60/60 JHITGV60 • 6mm or thicker Villaboard Lining one side Refer to Villaboard Lining Installation Manual for information regarding fixing. • 13mm GIB Fyreline® one side fixed as per section 6.10 • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 OPTIONS Stud depth (mm) 90 Villaboard Lining thickness (mm) 6 9 RW Rating 41 43 STC 42 43 Wall Width (mm) 109 112 Fire and Acoustic Design Manual November 2015 New Zealand 19 9 External walls GENERAL The external walls are required to be fire rated depending upon the situation when the wall is close to a boundary or a neighbouring property in order to comply with NZBC clause C3. The walls included in this section are two way fire rated load bearing walls as per NZS 3604. Special attention must be paid to junctions and penetrations in external walls. The external claddings may be required to be fixed over a cavity for certain designs and the cavity must not open into the roof space or sub floor space. The systems presented in the following sections are primarily based on the correct selection of materials. When using Linea Weatherboards in a fire rated situation the weatherboard must always be face fixed. All dimensions shown in tables are in millimetres. EXTERNAL 30 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEMS FRR 30/30/30 JHETJJ30 • 6mm or thicker cladding both sides or James Hardie cladding one side and 6mm or thicker James Hardie lining on other side Refer to product technical specification for information regarding fixing. • Fire retardant flexible underlay • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 OPTIONS Stud depth (mm) James Hardie cladding thickness (mm) 90 6 7.5 9 6mm Villaboard Lining STC / RW 39/40 41/42 44/43 9mm Villaboard Lining STC / RW 43/42 43/42 43/43 R Value FRR 30/30/30 2.04+ JHETJL30 • 6mm or thicker lining one side Refer to product technical specification for information regarding fixing. • R2.2 Fibreglass Insulation • Timber framing as per section 6.3 • Fire retardant flexible underlay • Linea Weatherboard/Linea Oblique Weatherboard fixed through the face. Refer to Linea Weatherboard/Linea Oblique Weatherboard Technical Specification for information regarding fixing. OPTIONS 20 Stud depth (mm) 90 James Hardie cladding (mm) 16 STC/Rw 46/45 R Value 1.94+ Fire and Acoustic Design Manual November 2015 New Zealand FRR 30/30/30 JHETLL30 • Linea Weatherboard/Linea Oblique Weatherboard both sides fixed through the face. Refer to Linea Weatherboard/ Linea Oblique Weatherboard Technical Specification for information regarding fixing. • Fire retardant flexible underlay both sides • R2.2 Fibreglass Insulation • Timber framing as per section 6.3 OPTIONS Stud depth (mm) 90 James Hardie cladding (mm) 16 STC/Rw 46/46 R Value 1.97+ FRR 30/30/30 JHETGJ30 • 6mm or thicker cladding one side Refer to product technical specification for information regarding fixing. • Fire retardant flexible underlay • 10mm GIB Fyreline® one side fixed as per section 6.10 • R2.2, Fibreglass Insulation • Timber framing as per section 6.3 OPTIONS Stud depth (mm) James Hardie cladding thickness (mm) STC / RW R Value 90 6 7.5 9 41/40 41/41 42/41 1.91+ NOTE: 13mm GIB® plasterboard can also be used in lieu of 10mm GIB Fyreline®. Fix as per GBTL 30b Fire and Acoustic Design Manual November 2015 New Zealand 21 FRR 30/30/30 JHETGL30 • Linea Weatherboard cladding one side Refer to product technical specification for information regarding fixing. • Fire retardant building underlay • Villaboard Lining or 10mm GIB Fyreline® one side fixed as per section 6.10 • R2.2 Fibreglass Insulation • Timber framing as per section 6.3 • Linea Weatherboard fixed through the face OTHER INFORMATION Stud depth (mm) 90 James Hardie cladding (mm) 16 STC / RW 43/43 R Value 1.93+ FRR 30/30/30 JHESGJ30 • 6mm or thicker cladding one side on fixing • 10mm GBI Fyreline® one side fixed as per section 6.10 • Fire retardant flexible underlay • James Hardie Mineral Insulation 90mm • Thermal fire batten fixed to framing externally • Steel framing as per section 6.4 OPTIONS Stud depth (mm) James Hardie cladding thickness (mm) STC / RW (with 9mm James Hardie product on one side) R Value 22 Fire and Acoustic Design Manual November 2015 New Zealand 89 6 7.5 9 42/44 45/46 47/47 2.04+ EXTERNAL 60 MINUTE TWO WAY FIRE RATED AND ACOUSTIC SYSTEMS FRR 60/60/60 JHETJJ60 • 6mm or thicker cladding both sides or James Hardie cladding one side and James Hardie Lining on other side Refer to product installation manual / technical specification for information regarding fixing. • Fire retardant flexible underlay • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 OPTIONS Stud depth (mm) James Hardie cladding thickness (mm) 90 6 7.5 9 6mm Villaboard Lining 39/40 41/42 44/43 9mm Villaboard Lining 43/42 43/42 43/43 R Value 2.04+ RW / STC Rating FRR 60/60/60 JHETLL60 • Linea Weatherboard/Linea Oblique Weatherboard both sides fixed through the face. Refer to Linea Weatherboard/ Linea Oblique Weatherboard Technical Specification for information regarding fixing. • Fire retardant flexible underlay both sides • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 OPTIONS Stud depth (mm) 90 James Hardie cladding (mm) 16 STC / RW 46/46 R Value 2.11+ Fire and Acoustic Design Manual November 2015 New Zealand 23 FRR 60/60/60 JHETVL60 • Linea Weatherboard/Linea Oblique Weatherboard one side. Refer to product technical specification for information regarding fixing • Villaboard Lining on other side. Refer to product installation manual for information regarding fixing • Fire retardant flexible underlay • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 OPTIONS Stud depth (mm) 90 James Hardie cladding (mm) 16 STC / RW 46/46 R Value 2.11+ FRR 60/60/60 JHETGJ60 • 6mm or thicker cladding one side Refer to product technical specification for information regarding fixing. • Fire retardant flexible underlay • 13mm GIB Fyreline® one side fixed as per section 6.10 • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3. OPTIONS Stud depth (mm) James Hardie cladding thickness (mm) STC / RW R Value 24 Fire and Acoustic Design Manual November 2015 New Zealand 90 6 7.5 9 42/41 43/42 43/42 2.08+ FRR 60/60/60 JHESGJ60 • 6mm or thicker cladding on one side and lining on other side Refer to product installation manual / technical specification for information regarding fixing. • Fire retardant flexible underlay • 13mm GIB Fyreline® one side fixed to GBS 60 • James Hardie Mineral Insulation 90mm • Steel framing as per section 6.4 • Thermal Fire batten under cladding OPTIONS Stud depth (mm) James Hardie cladding thickness (mm) STC / RW R Value 89 6 7.5 9 40/33 42/33 42/34 2.10+ EXTERNAL 90 MINUTE FIRE RATED SYSTEMS FRR 90/90/90 JHETGL90 • Linea Weatherboard cladding fixed over RAB Board Refer to product installation manual / technical specification for information regarding fixing. • 16mm GIB Fyreline® lining one side fixed as per section 6.10 • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 • Linea Weatherboard fixed through the face OTHER INFORMATION Stud depth (mm) 90 James Hardie cladding thickness (mm) 16 STC / RW 45/45 R Value 2.15+ Fire and Acoustic Design Manual November 2015 New Zealand 25 10 RAB Board GENERAL external walls. Where a RAB Board is used in lieu of a flexible underlay then the fire rating can be achieved without relying on the cladding product. RAB Board is suitable to achieve a fire rating up to 60 minutes as per fire rated system described below. When RAB Board is used for fire rating, a ‘non-combustible’ cladding material e.g. Monotek Sheet, Linea Weatherboard, Linea Oblique Weatherboard, Stria Cladding, Axon Panel, Titan Facade Panel etc can be used over RAB Board. These claddings can either be direct fixed or fixed onto a cavity batten over RAB Board. The cavity must not open into the roof or sub floor spaces. Special attention must be paid to junctions and penetrations through When RAB Board is used in conjunction with Linea Weatherboard cladding, a 90 minute fire rating can be achieved. Refer to JHETGL 90 system for further details. FRR 30/30/30 James Hardie cladding system eg Axon Panel, EasyLap Panel, Titan Façade Panel installed to CLD Structural Cavity Batten in conjunction with RAB Board, are suitable for use in fire rated systems. Always fix the cladding as per their manufacturers’ recommendations. JHETGR30 (CLD batten) • 6mm RAB Board exterior side. Refer to product installation manual for information regarding fixing. • 10mm GIB Fyreline® on side fixed tas per section 6.10 • R2.2 Fibreglass Insulation • Timber framing as per section 6.3 • Axon Panel, EasyLap Panel, Titan Façade Panel. Refer to product technical specification for information regarding fixing OPTIONS Stud depth (mm) 90 James Hardie cladding (mm) 6 STC / RW 47/46 R Value 1.95+ FRR 60/60/60 JHETGR60 (CLD batten) • 6mm RAB Board exterior side. Refer to product installation manual for information regarding fixing. • 13mm GIB Fyreline® on side fixed tas per section 6.10 • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 • Axon Panel, EasyLap Panel, Titan Façade Panel. Refer to product technical specification for information regarding fixing OPTIONS 26 Stud depth (mm) 90 James Hardie cladding (mm) 6 STC / RW 48/47 R Value 2.10+ Fire and Acoustic Design Manual November 2015 New Zealand FRR 30/30/30 JHETVR30 (CLD batten) • 6mm RAB Board exterior side. Refer to product installation manual for information regarding fixing • Villaboard Lining on other side. Refer to product installation manual for information regarding fixing • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 • Axon Panel, EasyLap Panel, Titan Façade Panel. Refer to product technical specification for information regarding fixing OPTIONS Stud depth (mm) 90 James Hardie cladding (mm) 6 STC / RW 49/48 R Value 1.95+ FRR 60/60/60 JHETVR60 (CLD batten) • 6mm RAB Board exterior side. Refer to product installation manual for information regarding fixing • Villaboard Lining on other side. Refer to product installation manual for information regarding fixing • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 • Axon Panel, EasyLap Panel, Titan Façade Panel. Refer to product technical specification for information regarding fixing OPTIONS Stud depth (mm) 90 James Hardie cladding (mm) 6 STC / RW 49/48 R Value 2.10+ Fire and Acoustic Design Manual November 2015 New Zealand 27 FRR 30/30/30 JHETGR30 • 6mm RAB Board exterior side Refer to James Hardie Rigid Air Barriers Installation Manual for information regarding fixing. • 10mm GIB Fyreline® on side fixed as per section 6.10 • R2.2 Fibreglass Insulation • Timber framing as per section 6.3 • Cladding as per manufacturers recommendations OPTIONS Stud depth (mm) 90 James Hardie cladding (mm) 6 STC / RW 42/42 R Value 1.95+ FRR 60/60/60 JHETGR60 • 6mm RAB Board exterior side Refer to James Hardie Rigid Air Barriers Installation Manual for information regarding fixing. • 13mm GIB Fyreline® on side fixed as per section 6.10 • James Hardie Mineral Insulation 90mm • Timber framing as per section 6.3 • Cladding as per manufacturers recommendations OPTIONS 28 Stud depth (mm) 90 James Hardie cladding (mm) 6 STC / RW 42/42 R Value 2.10+ Fire and Acoustic Design Manual November 2015 New Zealand 11 Internal floors/ ceilings Secura Interior Flooring used as flooring over the floor joists is suitable to achieve fire and acoustic rated floors. The floor joists must comply with NZS 3604 span tables or the specific engineering design. Refer to Secura Interior Flooring Installation Manual for installing Secura Interior Flooring. The IIC ratings for the following systems have been calculated without any floor covering over the Secura Interior Flooring. The products specified in these systems must be installed in accordance with their manufacturer’s specifications. Floor coverings have a significant contribution in enhancing the IIC rating of floor / ceiling system e.g. a floor having carpet covering will provide a lot better IIC rating when compared to ceramic tiles. FRR 30/30/30 JHFTGS30 • Secura Interior Flooring fixed as per Secura Interior Flooring Installation Manual. Edges other than tongue and groove must be supported over floor joists. • 13mm GIB Fyreline® fixed to GBSC 30. For more details refer to GIB® Fire Rated Systems. • Timber floor joists to comply with NZS 3604 minimum size 150 x 50mm @ 450mm c/c. Solid strutting required at 1800mm centres. OTHER INFORMATION STC/IIC 46/33 Overall Floor Depth approximately 178mm System Weight approximately 41kg/m2 FRR 60/60/60 JHFTGS60 • Secura Interior Flooring fixed as per Secura Interior Flooring Installation Manual. Edges other than tongue and groove must be supported over floor joists. • 16mm GIB Fyreline® fixed to GBFC 60. For more details refer to GIB® Fire Rated Systems • Timber floor joists to comply with NZS 3604 minimum size 200 x 50mm @ 450mm c/c. Solid strutting required at 1800mm centres. Alternatively Hyspan or Hybeam series joists may be used as per specific engineering design. OTHER INFORMATION STC/IIC 47/37 Overall Floor Depth approximately 231mm System Weight approximately 48kg/m2 Fire and Acoustic Design Manual November 2015 New Zealand 29 FRR 60/60/60 JHFTGS60 • Secura Interior Flooring fixed as per Secura Interior Flooring Installation Manual. Edges other than tongue and groove must be supported over floor joists. • 16mm GIB Fyreline® fixed to GBSC 60b. For more details refer to GIB® Fire Rated Systems • Timber floor joists to comply with NZS 3604 minimum size 200 x 50mm @ 450mm c/c. Solid strutting required at 1800mm centres. Alternatively Hyspan or Hybeam series joists may be used as per specific engineering design. OTHER INFORMATION STC/IIC 50/43 Overall Floor Depth approximately 485mm System Weight approximately 48kg/m2 FRR 90/90/90 JHFTGS90 • Secura Interior Flooring fixed as per Secura Interior Flooring Installation Manual. Edges other than tongue and groove must be supported over floor joists. • 2 x 16mm GIB Fyreline® fixed to GBFC 90 or 1 x 13mm GIB Fyreline® and 1 x 16mm GIB Fyreline® fixed to GBSC 90. For more details refer to GIB® Fire Rated Systems • Timber floor joists to comply with NZS 3604 minimum size 200 x 50mm @ 450mm c/c. Solid strutting required at 1800mm centres. Alternatively Hyspan or Hybeam series joists may be used as per specific engineering design. OTHER INFORMATION STC/IIC 30 50/38 Overall Floor Depth approximately 247mm System Weight approximately 61kg/m2 Fire and Acoustic Design Manual November 2015 New Zealand FRR 60/60/60 JHFTGS60 • Secura Interior Flooring fixed to 40 x 42mm minimum Structural timber batten. Battens spacing at 450mm maximum centres • Rubber Cradle spaced at 450mm maximum centres along the batten • Acoustic Insulation between battens minimum 9.6kg/m3 • Secura Interior Flooring as per Secura Interior Flooring Installation Manual. Edges other than tongue and groove must be supported over floor joists. • Timber floor joist at 450mm maximum centres • Acoustic insulation between joists. Minimum 9.6kg/m3 • GIB® ST001 clip and GIB® Rondo Metal Ceiling Batten • 16mm GIB Fyreline® fixed to Ceiling Batten OTHER INFORMATION STC/IIC Overall Floor Depth Approximately 65/60 384mm Fire and Acoustic Design Manual November 2015 New Zealand 31 12 Construction details Study the James Hardie fixing manual for the cladding or lining system to be used. Obtain the FRR or acoustic system specification required on your project. This should provide you with a specification number which clearly indicates the FRR performance required to be achieved. Additionally, the cladding or lining thickness required to obtain the desired sound attenuation should also be clearly specified. The specification corresponding to the number, FRR and framing specified can be quickly located using the system index in section 4 of this manual. Study section 8 and 9 to ensure the basic requirements for the system specified. Those basic requirements together with the following details will give you sufficient information to ensure the system you construct will provide the desired fire and acoustic performance. Additional construction details (eg. Intertenancy T junctions etc) are available for download at www.jameshardie.co.nz 12.1 FRAMING The framing must be erected as per the requirements of this specification. If any alterations are made to the timber frame set-out, ensure that the designer is informed. Set-out joints and control joints are planned as per the relevant James Hardie technical specification. • Timber framing must either be fixed as per NZS 3604 or SED specifications. • Check erected frame for straightness. To achieve the desired aesthetic results it must be in accordance with NZS 3604. • Minimum timber stud size required is 90 x 45mm. Note: Accuracy of nogs / dwangs spacing at 800mm is important to ensure the tight fit of the insulation. 12.2 RAB BOARD / FLEXIBLE UNDERLAY All external James Hardie claddings must have RAB Board or flexible underlay installed beneath it. Refer to project specifications and this manual for more details. Installation of flexible underlay or RAB Board must be as per the manufacturer’s recommendations and this manual. 12.3 INSULATION Fibreglass insulation Fit the specified insulation tightly in all framing cavities against the flexible underlay. Always ensure that the flexible underlay is not pushed out of the framing plane as it will tend to block off the cavity drainage where the cladding is fixed over cavity battens. James Hardie mineral insulation If you are not familiar with James Hardie Mineral Insulation then you must read section 14.1 on safe working practices, storage and handling of this product. The pre-cut sizes are 50mm bigger in length and width than the cavity size to ensure a tight friction fit in the cavity. If the cavity to be insulated is smaller than the size of insulation supplied, the insulation may be cut to fit to size. Ensure that insulation is at least 50mm bigger in each direction than the size of frame cavity to be filled so that a tight friction fit is achieved. 32 Fire and Acoustic Design Manual November 2015 New Zealand 12.4 JAMES HARDIE CLADDING OR LINING Use any standard jointing details as described in the appropriate James Hardie technical specifications. Note that expressed joints cannot exceed a maximum of 10mm in width vertically or horizontally. The expressed jointing system followed doesn’t affect the fire ratings in timber frame construction but this jointing option must not be used with steel frame construction. 12.5 CAVITY CONSTRUCTION The fire ratings are not affected when the James Hardie cladding is fixed using a timber cavity batten construction method. Follow the cavity construction specification developed for each cladding materials supplied by James Hardie. The fire rated performance of a cladding fixed using a timber cavity construction has been assessed by BRANZ under FAR562. A horizontal separation in the cavity must be provided at the floor levels where there are two separate tenancies one over the other. Titan Facade Panel, Stria Cladding, EasyLap Panel and Axon Panel when fixed to CLD Structural Cavity Batten must be installed over RAB Board to achieve the fire rating. 12.6 GIB® STANDARD PLASTERBOARD AND GIB FYRELINE® LINING GIB® standard plasterboard and GIB Fyreline® linings where specified in the system must be installed as per Winstone Wallboards technical literature. Also refer to Clause 6.10 12.7 SERVICES PENETRATIONS Due to the complexities involved with fire performance of various materials and assemblies, it is suggested to explore all options that may help in avoiding the penetrations through fire rated walls. In case a penetration through a fire rated wall is required then this must be carefully detailed and constructed on site. The penetration must at least be 100mm from the sheet/panel edges. The pipe penetration through a fire rated wall must include a fire sleeve supplied by Allproof or Hilti etc. Refer to Figure 6 and 7 for a pipe penetration. The cable penetrations must be sealed using ‘Firestop Plug’ or ‘Firestop Cable Collar’ supplied by Hilti or other similar product. Any gaps around penetrations or joints etc. must be sealed with intumescent sealers. The pipe must not run vertically /horizontally along the wall within the wall framing. Refer to proprietary fire sealant or accessories suppliers for further information about the correct use of their product. 13Construction details Table 1 Description Figure Page Boundary Wall Bottom Plate Fixing with Lining 1 36 Boundary Wall Bottom Plate Fixing with Lining 2 3737 Lining/Cladding Fixing and Layout to Boundary Wall 3 32 Weatherboard Fixing and Layout to Boundary Wall 4 33 Intertenancy Fire Separation Horizontal Joint 5 34 13.1 JAMES HARDIE FIRE RATED BOUNDARY WALL AND SOFFITS CONSTRUCTION Figure 1 will provide FRR Soffits which should be used in conjunction with James Hardie FRR exterior systems. The FRR soffit system has been assessed by BRANZ under FAR2597. Fire and Acoustic Design Manual November 2015 New Zealand 33 Figure 1: Boundary Wall Bottom Plate Fixing with Villaboard® Lining 34 Fire and Acoustic Design Manual November 2015 New Zealand Figure 2: Boundary Wall Bottom Plate Fixing with Villaboard® Lining Fire and Acoustic Design Manual November 2015 New Zealand 35 Figure 3: Lining/Cladding Fixing and Layout to Boundary Wall 36 Fire and Acoustic Design Manual November 2015 New Zealand Figure 4: Weatherboard Fixing and Layout to Boundary Wall Fire and Acoustic Design Manual November 2015 New Zealand 37 Figure 5: Intertenancy Fire Separation Horizontal Joint 38 Fire and Acoustic Design Manual November 2015 New Zealand Figure 6: Fire Penetration Internal Wall Insulation in wall cavity Internal lining Framing Fire band fire stop sleeve Collar Intumescent sealant James Hardie Villaboard® Lining Penetrating Pipe Figure 7: Fire Penetration External Wall Insulation in wall cavity Framing Internal lining Cavity batten Fire band fire stop sleeve Collar Intumescent sealant RAB® Board or flexible underlay James Hardie Cladding External collar for weathertightness Penetrating Pipe Propriety fixed/non fixed fireband installed as per manufacturers instructions Fire and Acoustic Design Manual November 2015 New Zealand 39 14 S afe working practice WARNING — DO NOT BREATHE DUST AND CUT ONLY IN WELL VENTILATED AREA James Hardie products contain sand, a source of respirable crystalline silica which is considered by some international authorities to be a cause of cancer from some occupational sources. Breathing excessive amounts of respirable silica dust can also cause a disabling and potentially fatal lung disease called silicosis, and has been linked with other diseases. Some studies suggest smoking may increase these risks. During installation or handling: (1) work in outdoor areas with ample ventilation; (2) minimise dust when cutting by using either ‘score and snap’ knife, fibre cement shears or, where not feasible, use a HardieBlade™ Saw Blade and dust-reducing circular saw attached to a HEPA vacuum; (3) warn others in the immediate area to avoid breathing dust; (4) wear a properly-fitted, approved dust mask or respirator (e.g. P1 or P2) in accordance with applicable government regulations and manufacturer instructions to further limit respirable silica exposures. During clean-up, use HEPA vacuums or wet cleanup methods — never dry sweep. For further information, refer to our installation instructions and Safety Data Sheets available at www.jameshardie.co.nz. FAILURE TO ADHERE TO OUR WARNINGS, SAFETY DATA SHEETS, AND INSTALLATION INSTRUCTIONS MAY LEAD TO SERIOUS PERSONAL INJURY OR DEATH. James Hardie recommended safe working practices CUTTING OUTDOORS 1.Position cutting station so wind will blow dust away from user or others in working area. 2.Use one of the following methods based on the required cutting rate: BEST • Score and snap • Hand guillotine • Fibreshear BETTER • Dust reducing circular saw equipped with HardieBlade™ Saw Blade and HEPA vacuum extraction. GOOD • Dust reducing circular saw with HardieBlade™ Saw Blade. CUTTING INDOORS • Cut only using score and snap, hand guillotine or fibreshears (manual, electric or pneumatic). • Position cutting station in a well-ventilated area. DRILLING/OTHER MACHINING When drilling or machining you should always wear a P1 or P2 dust mask and warn others in the immediate area. IMPORTANT NOTES 1.For maximum protection (lowest respirable dust production), James Hardie recommends always using “Best” — level cutting methods where feasible. 2.NEVER use a power saw indoors. 3.NEVER use a circular saw blade that does not carry the HardieBlade™ logo. 4.NEVER dry sweep — Use wet suppression or HEPA vacuum. 5.NEVER use grinders. 6.ALWAYS follow tool manufacturers’ safety recommendations. P1 or P2 respirators can be used in conjunction with above cutting practices to further reduce dust exposures. Additional exposure information is available at www.jameshardie.co.nz to help you determine the most appropriate cutting method for your job requirements. If concern still exists about exposure levels or you do not comply with the above practices, you should always consult a qualified industrial hygienist or contact James Hardie for further information. 40 Fire and Acoustic Design Manual November 2015 New Zealand Working instructions Storage and handling Refer to recommended Safe Working Practices before starting any cutting or machining of product. To avoid damage, all James Hardie building products should be stored with edges and corners of the sheets protected from chipping. Score and snap Scored edge Straight edge Score and snap is a fast and efficient method of cutting James Hardie building products using special tungsten tipped score and snap knife. James Hardie building products must be installed in a dry state and protected from rain during transport and storage. The product must be laid flat under cover on a smooth level surface clear of the ground to avoid exposure to water, moisture, etc. Preferably score on the face side of the product. Score against a straight edge and repeat the action to obtain adequate depth for clean break — normally one third of sheet thickness. Snap upwards to achieve break. Smooth any rough edges with a rasp. Quality Hand guillotine Make guillotine cut on the off-cut side of line to allow for the thickness of the blade. Fibreshear heavy duty An electrically powered, fast, clean and effortless way of cutting James Hardie building products, especially around curves such as archways. Make fibreshear cut on the ‘off-cut’ side of the line to allow for the thickness of the shear. HardieBlade™ Saw Blade The HardieBlade™ saw blade used with a dust-reducing saw connected to a HEPA vacuum allows for fast, clean cutting of James Hardie fibre cement products. A dustreducing saw uses a dust deflector or a dust collector which can be connected to a vacuum system. When sawing, clamp a straight-edge to the sheet as a guide and run the saw base plate along the straight edge when making the cut. Hole-Forming For smooth clean cut circular holes: • Mark the centre of the hole on the sheet. • Pre-drill a pilot hole. • Using the pilot hole as a guide, cut the hole to the appropriate diameter with a hole saw fitted to a heavy duty electric drill. James Hardie conducts stringent quality checks to ensure any product manufactured falls within our quality spectrum. It is the responsibility of the builder to ensure the product meets aesthetic requirements before installation. James Hardie will not be responsible for rectifying obvious aesthetic surface variations following installation. 14.1 JAMES HARDIE MINERAL INSULATION Storage James Hardie mineral wool should be stored in the packaging provided in a clean dry space where it will not get wet, knocked or damaged. Handling and safety Protective clothing must be worn when handling this product. OSH Health and Safety Guidelines for the Selection and Safe Handling of Synthetic Mineral Fibres requires lightweight nylon overalls, gloves, appropriate eye protection and a respirator with a minimum of a class P1 filter. Handling the product as if it is fragile will greatly reduce the potential dust creation and loose fibres. A SDS is available by visiting www.jameshardie.co.nz or Ask James Hardie on 0800 808868. Cutting A straight edge and stiff blade knife or similar will neatly cut this product with the minimum of dust creation. Other materials Manufacturers instructions and specifications must be strictly followed for all products not supplied by James Hardie. All GIB® products must be handled as per GIB® systems literature. For irregular holes: • Small rectangular or circular holes can be cut by drilling a series of small holes around the perimeter of the hole then tapping out the waste piece from the sheet face. • Tap carefully to avoid damage to sheets, ensuring the sheet edges are properly supported. Fire and Acoustic Design Manual November 2015 New Zealand 41 15 P roduct information and accessories Table 2 Accessories/tools supplied by James Hardie Accessories Description James Hardie Mineral Insulation Quantity/size (approx) 600 x 800 x 90 mm – 2.4m2 per bale Sku: 304904 Claddings or linings as per the relevant James Hardie product literature Table 3 Accessories/tools not supplied by James Hardie James Hardie recommends the following products for use in conjunction with James Hardie products. James Hardie does not supply these products and does not provide a warranty for their use. Please contact component manufacturer for information on their warranties and further information on their products. Accessories Description Flexible underlay Must comply with E2/AS1 requirements. HardieFlex™ Nail galvanised or stainless steel. Flexible tape A flexible self-adhesive tape used in preparation of a window. e.g. Marshall Innovations, Tyvek®, Flexwrap™, etc. Finishing Nailer Gas or pneumatic finishing nailer for fixing PEF Rod Used to form an air seal between the window liner and window opening frame. Inseal Strip 3109 Used for sealing around window jambs. Head Flashing compliant with E2 Material must comply with E2/AS1 requirements. Sealant Fire retardant / acoustic sealant to seal the joints. Refer to sealant manufacturer’s recommendations before applying. Thermal Fire Battens The battens are made by cutting a 100mm wide strip from 9mm thick Monotek Sheet and adhering a 10mm thick XPS (Extruded Polystyrene) to the strip. GIB Fyreline® GIB® Standard Plasterboard FRR Penetrations Marshall Innovations, Tyvek®, Flexwrap™ are trademarks registered to their owners 42 Fire and Acoustic Design Manual November 2015 New Zealand Product Warranty Fire and Acoustic November 2015 For full product specific warranties, please refer to the relevant product technical specification or installation manual. They are also available for download at www.jameshardie.co.nz or simply Ask James Hardie on 0800 808 868. Ask James HardieTM I Call 0800 808 868 I jameshardie.co.nz Ask James HardieTM I Call 0800 808 868 I jameshardie.co.nz Copyright November 2015. © James Hardie New Zealand. TM and ® denotes a Trademark or Registered Mark owned by James Hardie Technology Limited.
© Copyright 2026 Paperzz