Design Guide - SX Homes · Thickness (mm) 102 1 James ... 4 6mm Villaboard ... HARDIESMARTTM BOUNDARY WALL SYSTEM DESIGN GUIDE PAGE 5 OF 20 …

HARDIESMARTTM BOUNDARY WALL SYSTEM DESIGN GUIDE PAGE 1 OF 20

This guide contains product information, technical specification, construction details and design considerations for the HardieSmart™ Boundary Wall System.

ApplicationsIntroduction

What is the HardieSmart™ Boundary Wall System?The HardieSmart™ Boundary Wall System is designed for buildings where external walls are in close proximity to the boundary as well as all bushfire zoned areas that require a Fire Resistance Level (FRL) of up to 1 hour. This integrated solution will not only satisfy fire requirements but will also provide you with excellent acoustic, energy efficiency and bracing performance.

Advantages• Able to be retrofitted where a fire-rated system

is required post-installation of James Hardie™ external cladding.

• The selected cladding does not need additional fixing requirements.

• Single layer system, no need for additional layers. • Maximises indoor space using a compact solution.

Class 1 buildings on same allotment

Buildings near edge of allotment

Bushfire Flame Zone Areas

Flame Zone bushfire prone areas require a FRL up to 30/30/30 minutes for walls. If using James Hardie™ cladding in these areas, HardieSmart™ Boundary Wall System may be used.

Minimum RequirementsThe HardieSmart™ Boundary Wall System is suitable for use in class 1 and 10a timber-framed buildings with a FRL requirement of 60/60/60 minutes or less. For higher FRL, please consult James Hardie Engineering Solutions on 13 11 03.

Make sure your information is up to date. When specifying or installing James Hardie™ products, ensure you have the current manual or guide. If in doubt, or you need more information, visit www.jameshardie.com.au or Ask James Hardie™ on 13 11 03.

Design Guide

DETACHED & ROW HOUSING | GARAGES AUSTRALIA | MARCH 2017

Within 1.8m of another building

on the same allotment

Within 900mm of allotment boundary

Allo

tmen

t B

ound

ary

1.8m

900mm

CLASS 1&10a


System Specification

Boundary Wall System For external walls in close proximity to the boundary.

FRL(minutes)

60/60/60

Total R-value (m2.K/W)

2.0-2.4

Bracing (kN/m)

4.0-10.0 (depends on fixing method and selected cladding, refer to De-sign Considerations)

Min. Wall Thickness (mm)

102

1 James Hardie™ External CladdingSelected James Hardie™ external cladding must be at least 6mm thick. To see our range of suitable external cladding products, visit jameshardie.com.au or Ask James Hardie™ on 13 11 03

2 HardieWrap™ Weather BarrierA non-perforated, highly breathable and reflective safe-glare weather barrier designed to be used behind cladding.

Size (mm) 2750x30000Mass per roll (kg/m2) 0.11Part No. 305664

3 60mm HardieFire™ InsulationMineral wool insulation specifically designed for use in fire applications with HardieSmart™ Systems.Pack Size: 7 batts

Size (mm) | Part No | Coverage (m2)

1160x560 | 305903 | 5.11160x420 | 305902 | 3.81320x420 | 305909 | 4.3

Thickness (mm) 60Material R-value (m2.K/W)

1.7

Density (kg/m3) 80

4 6mm Villaboard™ LiningFibre cement internal lining sheet with a recessed edge. Suitable for tiled and untiled internal wall applications in dry and wet areas.

Sizes (mm) 900 x (2400,3000)1200 x (1800,2400,2700,3000, 3600,4200)1350 x (2400,3000,3600,4200)

Mass (kg/m2) 8.3Part No. See Villaboard™ lining manual

System Configurations

System Performance

Main Components

Please refer to Design Considerations for framing specification, structural capacity, fire resistance and other limitations

All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.

12

3 4

Lining/Cladding AccessoriesThe selected James Hardie™ external cladding and internal lining require additional components such as corner extrusions, tapes, etc. Refer to the respective product installation guide for more information.

Other Components


Sealants (not supplied by James Hardie)

Fire and Acoustic-Rated SealantUse a tested and warranted fire and acoustic-rated sealant. Use in junctions and wall gaps to maintain fire and acoustic integrity of the system. Refer to Construction Details for specific uses. E.g. Bostik FireBan One.

Other (not supplied by James Hardie)

Fire Resisting Mineral WoolUsed to seal cavities and maintain FRL at junctions of the selected wall system. Please see Construction Details for applications. Refer to manufacturer for guidance on installation.

ToolsReciprocating Saw, Utility Knife or Hand Saw for Cutting HardieFire™ Insulation

Used for cutting insulation when required. Ensure to cut 5mm wider than required to ensure compression of insulation in the cavity.

Tools For Fibre Cement A suite of tools are available for cutting and handling James Hardie™ fibre cement. Please refer to James Hardie Best Practice Guide for more information.

Safe Work Practices

HardieFire™ Insulation

Storage and HandlingStore in an internal dry area, out of direct sunlight and not exposed to chemicals. It must not be installed during an electrical storm and it must be installed in a dry state to a dry surface and protected from weather during transport and storage. HardieFire™ insulation has not been designed to withstand prolonged direct exposure to the exterior elements. Ensure that the insulation is completely dry prior to lining.

Protective EquipmentKeep exposure to a minimum and minimise quantities kept in work areas. Avoid contact with eyes. When handling and installing Hardiefire™ insulation, to prevent irritation ensure you wear:• Safety goggles/glasses conforming to AS/NZS 1336,• Protective clothing such as gloves and long sleeve

shirts and trousers,• P1 or P2 respirators.

Before Installation• You must turn the mains power ‘Off’ before entering

work space. If in doubt, you must consult a licensed electrician.

• Care and safety measures must be followed when working in areas that contain live electrical wiring.

• Defective electrical cables, terminals or any other electrical wiring must be repaired by the relevant specialist prior to installation.

• Ensure workspace has adequate and ample ventilation. If working in confined spaces, it is recommended to use a HEPA vacuum or other suitable dust extractors.

• Before entering workspace, complete a risk assessment inspection to identify hazards including but not limited to electrical, site access and ventilation.

CuttingIt is recommended to cut outdoors. If cutting indoors, please ensure that workspace is properly ventilated or HEPA vacuums/dust extractors are used.1. Position cutting station so wind will blow dust away

from the user or others in working area.2. Use either hand saw or reciprocating saw.

DisposalDiscard any waste pieces of HardieFire™ insulation in accordance with your local council guidelines. Dispose of the material in such a manner to prevent exposure and escape.

Further Health and Safety InformationFor more information refer to the HardieFire™ insulation SDS available at jameshardie.com.au and accel.com.au.

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. During installation or handling, ensure to follow James Hardie's Best Practice Book and SDS for James Hardie™ fibre cement products and HardieFire™ insulation available at jameshardie.com.au.

Fibre Cement


Design Considerations

Slab and FootingsThe slab and footings on which the building sits must comply with AS 2870 ‘Residential Slabs and Footings – Construction’ and the requirements of the NCC.

Boundary SetbackJames Hardie recommends a minimum setback of 500mm from an existing structure. This is to allow for maintenance of the selected external cladding as per the respective installation instructions. For systems built right against an existing structure, please refer to the HardieSmart™ ZEROLOT™ Design Guide.

Please note that council, state or other regulations may apply in your development which specify different setbacks, height, width and other design criteria. Additionally, confirmation in writing in the form of a statutory declaration from the registered owner of the adjoining premises may be required to demonstrate compliance. The designer or specifier must ensure that the system is fit for purpose and complies with the relevant requirements and regulations.

Bracing Performance

Thermal PerformanceThis guide outlines certified modelled Total R-values for HardieSmart™ Wall Systems. Use this information to assist in satisfying the minimum deemed to satisfy NCC thermal resistance requirements and in verification software tools.

The Total R-value is based on using HardieWrap™ weather barrier with an emissivity of 0.16W/m2. The Total R-values for common systems are in accordance with AS4859.1:2002 including Amendment 1:2006 'Materials for Thermal Insulation of Buildings'.

This guide must be read in conjunction with the James Hardie Structural Bracing Application Guide (designed in accordance with AS 1684 'Residential Timber Framed Construction'). The James Hardie Structural Bracing Application Guide contains fixing details and bracing capacity for James Hardie™ sheet bracing and other fibre cement cladding. All design capacities quoted are Ultimate Limit State (ULS) figures and have been certified by consulting engineers, Cardno (NSW). Pty Ltd.

All design and construction must comply with the appropriate requirements of the National Construction Code (NCC) and other applicable regulations and standards. The specifier or other party responsible for the project must ensure that the details in this specification are appropriate for the intended application and that additional detailing is performed for specific design or any areas that fall outside the scope of this specification.

General

The HardieSmart™ Boundary Wall System has been designed and tested in accordance with P2.2.2 as per NCC requirements. For any variations, it is the responsibility of the designer or specifier to identify moisture related risks associated with any particular building design. Wall construction design must effectively manage moisture, accounting for both the interior and exterior environments of the building, particularly in buildings that have a higher risk of wind driven rain penetration or that are artificially heated or cooled. All wall openings, penetrations, intersections, connections, window sills, heads and jambs must be flashed prior to cladding installation.

Weather Resistance

In areas within 1km of a coastal area, areas subject to salt spray and other corrosive environments, class 4 fasteners must be used. All other areas require a minimum class 3 fastener. Fasteners must be fully compatible with all other materials that they are in contact with to ensure the durability and integrity of the assembly. Contact the fastener manufacturer for more information.

Coastal Areas

James Hardie™ fibre cement products and components such as HardieFire™ insulation and HardieWrap™ weather barrier must be as specified in the system.

No statement of performance will be provided by James Hardie when alternative products are used.

Component Substitution

Fire ResistanceNCC Vol. 2 Section 3.7.1.8 requires boundary walls to maintain an FRL of 60/60/60 minutes. HardieSmart™ Systems have been certified by the CSIRO Division of Building Construction and Engineering and the Building Research Association of New Zealand (BRANZ) in accordance with the principles of AS1530.4 (FCO-3222). They are suitable to achieve 60/60/60 FRL when designed in accordance with this guide.

Fastener TypeBrad nail and/or adhesive fixings are not recommended in fire and acoustic-rated systems. Please refer to the respective product for alternative fixing methods.


Framing

Material Seasoned timber only. Timber used for house construction must have the level of durability appropriate for the relevant climate and expected service life. Reference AS1684.2 ‘Residential Timber Framed Construction’.

Stud Size

90x45mm recommended. 90x35mm may be used; however, check your selected James Hardie™ external cladding product for additional requirements.

Stud Spacing

600mm maximum. Check whether you require closer stud spacings for your site wind pressures and tile weight (only for tiled walls). It must be noted that HardieFire™ insulation sizes have been optimised for 45mm studs at 600mm centres and 35mm studs at 450mm centres, cutting may be required otherwise.

Maximum Nogging Spacing

1200mm

Structural Capacity

5 kN/stud. The load bearing capacities of the timber-framed walls must be in accordance with AS1684 ‘Residential Timber-Framed Construction’ and AS1720.1 ‘Timber Structures’.3.4 kN/stud.For 90x35mm studs spaced at 600mm centres. Please note that if specifying 600mm centres, cutting of HardieFire™ insulation will be required as sizes have been optimised for 45mm studs at 600mm centres.

Stud Height (mm)

Stud Size Max. Height

90x35mm 3000mm

90x45mm 3600mm

90x70mm 3900mm

90x90mm 4200mm

Tolerance Ensure frame is square and work from a central datum line. Frames must be straight and true to provide a flush face to receive the sheeting. A suggested maximum tolerance of between 3mm and 4mm in any 3000mm length will give best results.

Services and Fixtures

Electrical Electrical cables may be run in the service cavity or via a PVC conduit not exceeding 20mm in diameter. Refer to Figures 16-17.

Plumbing Plumbing pipes with a diameter less than 20mm may be run in the service cavity (see Figures 19-21). For larger pipes, they must be relocated to non fire-rated partitions.

Wall Fixtures

When fixing brackets, cabinets, shelves, or any other fixture that requires the wall to carry a load, they must be fixed to the framing member (i.e. studs) and must not rely solely on the lining.

Air- Conditioning

Pipes with an outside diameter less than 20mm and carrying non-flammable refrigerants may be run inside the service cavity (see Figures 22-23).

HardieWrap™ Weather Barrier

Refer to HardieWrap™ weather barrier datasheet for more information on the standard installation.

HardieFire™ Insulation

Must be used as the frame cavity infill and must be compressed 5mm minimum in both vertical and horizontal directions (i.e. batt size must be at a minimum 5mm wider and longer than frame stud bay). Ensure there are no gaps in the installation and position batts hard against external wall face to allow for an internal service cavity. Please refer to HardieFire™ insulation datasheet at jameshardie.com.au

Villaboard™ Lining

Must be installed in accordance with the current Villaboard™ lining installation instructions. Alternative James Hardie™ internal linings with a minimum of 6mm thick may be used in lieu of Villaboard™ lining.

James Hardie™ External Cladding

Any James Hardie™ external cladding 6mm or thicker may be used. It must be installed in accordance with the respective installation instructions.

Others For other components not supplied by James Hardie ensure to follow the instructions set out in this guide and the respective manufacturer's recommendations.

Services are recommended to be installed after HardieFire™ insulation has been fitted in the stud bays to ensure cables and pipes are at the right depth. Services may only be run in the service cavity between the insulation and the lining (i.e. must not exceed 20mm deep). WARNING: When fixing lining, avoid nailing near pipes or cables as it may cause damage.

Component Installation

Running Services by Notching or Drilling of the Timber Frame: When notching or drilling studs or plates, provided these are structural, limitations apply in accordance with AS1684.2. Typically stud penetrations are limited to a maximum 20mm drill hole, located 10mm from the stud edge. Refer to Figure 15 for further information.


FIGURE 1 SLAB DETAIL

Construction Details

James Hardie™ internal

lining

90mm stud

60mm HardieFire™

insulation

Selected James Hardie™ external cladding 6mm thick or greater

Damp proof course or HardieEdge™ base trim

HardieWrap™ weatherbarrier

James Hardie™ internal

lining

90mm stud 60mm HardieFire™ insulation


Corrosion resistant metal flashing with min. 75mm upstand

HardieWrap™ weather barrier, continued under pier

Ant cap

James Hardie™ internal lining

90mm stud 60mm HardieFire™

insulation


Corrosion resistant metal flashing with min. 75mm upstand and 10mm overhang

HardieWrap™ weather barrier

45mm sacrificial

timber bearer

Ant cap200x50mm H4 treated timber plinth*Refer to timber supplier for suitability

Horizontal timber support between piers

or stumps

FIGURE 3 WALL BASE TO SUSPENDED GROUND FLOOR OPTION 1

FIGURE 2 WALL BASE TO SUSPENDED GROUND FLOOR

45mm sacrificial timber bearer

Continuous pier or stump

Discontinuous pier or stump


FIGURE 5 UPPER STOREY FLOOR JUNCTION OPTION 1


60mm HardieFire™ insulation


Structural flooring

Timber pole plate to designer's specifications

Non fire-rated ceiling lining

Required interfloor flashing as per selected external cladding

Gap must not exceed 25mm

and must be covered by

cornice


Floor Junctions



Structural flooring

45mm sacrificial timber block


James Hardie™ Step Flashing

Gap must not exceed 25mm

and must be covered by

cornice


FIGURE 4 UPPER STOREY FLOOR JUNCTION OPTION 2



FIGURE 7 EXTERNAL BOUNDARY WALL TO PARAPET ROOF

Selected James Hardie™ external cladding 6mm

thick or greater

Suitable corrosion resistant flashing


Internal window trim

Seal continuously with fire and

acoustic sealant

Non-openable and suitable fire window with FRL of -/60/-


Corrosion resistant metal flashing with fall in accordance with manufacturer instructions

Gap must not exceed 25mm and must be covered by cornice


50mm + height of water

Metal or tiled roofing installed in accordance with manufacturer instructions with suitable sarking



FIGURE 6 FIRE RATED EXTERNAL WINDOW (GUIDE ONLY, PLEASE REFER TO WINDOW MANUFACTURER)

Window Details

Roof Junctions

60mm HardieFire™

insulation





FIGURE 8 EXTERNAL BOUNDARY WALL TO JAMES HARDIE™ EAVE LINING OPTION 1

Floor Junctions

60mm HardieFire™

insulation Selected James Hardie™ external cladding 6mm thick or greater

Non-combustible fascia





James Hardie™ eaves lining







FIGURE 9 EXTERNAL BOUNDARY WALL TO JAMES HARDIE™ EAVE LINING (RAKED) OPTION 2

60mm HardieFire™

insulation



4.5mm HardieFlex™ lining



Selected James Hardie™ external cladding 6mm thick or greater Gap must not exceed

25mm and must be covered by corniceNon fire-rated

ceiling lining



Gutter installed in accordance with manufacturer instructions. It is recommended to cap or flash under the gutter for moisture management

45mm sacrificial timber batten

Fill with fire resistant mineral wool to retain FRL (HardieFire™ insulation not suitable)








FIGURE 10 EXTERNAL BOUNDARY WALL TO ROOF WITH NO EAVE LINING

FIGURE 11 EXTERNAL BOUNDARY WALL TO ROOF WITH BOX GUTTER

60mm HardieFire™

insulation



Suitable fire-rated external sealant


FIGURE 14 NON FIRE-RATED INTERSECTING FIRE-RATED BOUNDARY WALL



Gap must not ex-ceed 25mm and must be covered

by cornice



6mm James Hardie™

internal lining


Corrosion resistant metal flashing







6mm James Hardie™

internal lining


Corrosion resistant metal flashing


Selected James Hardie™ external

cladding 6mm thick or greater


Non fire-rated internal lining

6mm gap sealed with fire and acoustic sealant

45mm sacrificial timber batten to

maintain FRL

FIGURE 12 EXTERNAL BOUNDARY WALL TO PARAPET ROOF WITH PARALLEL ROOF TRUSSES

FIGURE 13 EXTERNAL BOUNDARY WALL TO PARAPET ROOF WITH PERPENDICULAR ROOF TRUSSES



60mm HardieFire™

insulation



Electrical Services

FIGURE 16 ELECTRICAL SERVICES (GPO/POWER POINTS) - SECTION FROM ABOVE

Standard GPO installed in accordance with manufacturer's instructions

6mm gap fully caulked with fire-rated sealant

60mm HardieFire™

insulation

Max. 20mm diameter cables or conduit, run in 30mm service cavity



90mm stud

Drill through centre of stud to run cables

where necessary. Do not penetrate

HardieFire™ insulation


WARNING: When fixing lining, avoid nailing near pipes or cables as it may cause damage.

FIGURE 15 SERVICE PENETRATIONS THROUGH TIMBER STUDS AND PLATES

It is important that the penetration type is identified to ensure suitable notching or stud drilling. These penetration types are referenced in the Construction Details on the following pages. Note: this does not apply to electrical cable penetrations (excluding conduits) which may be run through the stud centre. For further information refer to AS1684.2 ‘Residential Timber Framed Construction.’

20mm hole for standard penetrations

30mm notch for large penetrations

Top plate penetration

Suitable for most standard residential services up to 20mm diameter.

• Maximum 20mm drill hole, 10mm from the stud edge

Suitable for larger services up to 30mm diameter.

• Maximum 30mm notch

• Square shape notch

• First notch through one stud All subsequent notches

Suitable when penetrating the top plate to run services from the ceiling cavity into the wall.

• Maximum 20mm drill hole, 10mm from the plate edge or a 30mm square notch

• Install a 90x45mm vertical nogging below the top plate for support

Service Penetrations through Timber Studs and Plates

Located 10mm from stud edgeMax 20mm drill hole

Max 30mm notch

Subsequent 30mm notches tobe double stud

30mm

30m

m

Additional stud

Max 20mm drill hole10mm from top plate edgeor 30mm square notch

90x45mm flat studto support top platespanning between noggings


FIGURE 17 ELECTRICAL SERVICES (GPO/POWER POINTS) - SECTION FROM SIDE


Bracket for powerpoint fixed to stud

Electrical cables pinned or taped to stud where required


Max. 20mm diameter cables or conduit, run in 30mm service cavity



Bracket for powerpoint fixed to stud


cladding 6mm thick or greater James Hardie™

internal lining

FIGURE 18 ELECTRICAL SERVICES (GPO/POWER POINTS) PERSPECTIVE

60mm HardieFire™

insulation





Plumbing Services

FIGURE 20 HOT/COLD PLUMBING TAPS - SECTION FROM SIDE


Plumbing services run through 30mm service cavity

6mm Villaboard™ lining installed, waterproofed and tiled as per Wet Area Construction Guide

90x45mm additional timber noggin for tap support. Insert nogging prior to HardieFire™ insulation

Continuous 6mm bead of wet area appropriate fire rated sealant around tap



FIGURE 19 HOT/COLD PLUMBING TAPS - SECTION FROM ABOVE




Refer to Figure 15 for max. drill hole size and location


Continuous 6mm bead of wet area appropriate fire-rated sealant around tap

WARNING: When fixing lining, avoid nailing near pipes or cables as it may cause damage. Refer to Figure 15 for plate and stud penetration details.

HARDIEZEROLOT™

panel


FIGURE 21 HOT/COLD PLUMBING TAPS - PERSPECTIVE









Continuous 6mm bead of fire-rated sealant around duct

90mm stud

Flexible air conditioning ducting, max. 20mm diameter, passing through 30mm service cavity


FIGURE 22 FLEXIBLE AIR-CONDITIONING PIPES WITH NON-COMBUSTIBLE GAS - SECTION FROM ABOVE

Air-Conditioning Pipes (non-combustible refrigerants only)



Refer to Figure 15 for stud notching and drilling details

WARNING: when fixing lining, void nailing near pipes or cables as it may cause damage. Refer to Figure 15 for plate and stud penetration details.





Flexible air conditioning ducting, max 20mm diameter, passing through 30mm service cavity

FIGURE 23 FLEXIBLE AIR-CONDITIONING PIPES WITH NON-COMBUSTIBLE GAS - PERSPECTIVE



Online ToolsEstimation tools, CAD details, and site specific documents are available via our specification website accel.com.au. For more information visit the website or Ask James Hardie™ on 13 11 03

WarrantyHardieSmart™ Boundary Wall System has a James Hardie Product Warranty. The period varies for the selected system components. For terms and conditions of product warranty, refer to www.jameshardie.com.au or www.accel.com.au

WARNING: when fixing lining, void nailing near pipes or cables as it may cause damage. Refer to Figure 15 for plate and stud penetration details.


Notes


Notes


© 2017 James Hardie Australia Pty Ltd ABN 12 084 635 558. TM and ® denote a trademark owned by James Hardie Technology Limited.HSDG01_Rev_3_Issue Date_07032017

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Design Guide - SX Homes · Thickness (mm) 102 1 James ... 4 6mm Villaboard ... HARDIESMARTTM BOUNDARY WALL SYSTEM DESIGN GUIDE PAGE 5 OF 20 …