james hardi bracing design manual

8/9/2019 James Hardi Bracing Design Manual

1/36

October 2013 / New Zealand

Bracing DesignManual


2/36

8 Maintenance 7

8.1 General 7

9 Product information 7

9.1 Manufacturing and Classification 7

9.2 Sizes 7

10 Safe working practices 8

11 Details 10

12 Bracing table VillaboardLining 11

13 Bracing figures linings 12

14 Bracing tables 15

15 Bracing figures 17

16 Bracing figures claddings(direct fix) 19

17 Bracing connection figures(direct fix) 24

18 Bracing connection figures(cavity fix) 27

19 Structual ceiling diaphragm 32

20 Bracing calculation tables 33

1 Application and scope 3

1.1 Application 31.2 Scope 3

1.3 Details 3

1.4 Specific Design and Detailing 3

2 Design 3

2.1 Compliance 3

2.2 Responsibility 3

2.3 Site and Foundation 4

2.4 Ground Clearances 4

2.5 Moisture Management 4

2.6 Wind Loading 4

2.7 Height of Bracing Panels 4

2.8 Length of Bracing Panels 4

2.9 Bracing SheetS Stopped Below Top Plate 4

2.10 Bracing in Wet Areas 4

2.11 Impact Resistance 4

2.12 Maximum Bracing Units 4

2.13 Specific Engineering Design 4

3 Timber framing 5

3.1 General 5

3.2 Dimensions 5

3.3 Structural Grade 5

3.4 Tolerances 5

3.5 Durability 5

3.6 Frame Construction 5

3.7 Bottom Plate Fixing 5

4 Preparation 5

4.1 General 5

4.2 Building underlay or HomeRABPreClad Lining 5

4.3 Window and Door Installation 5

5 Sheet fixing 6

5.1 Fastener Durability and Size 6

5.2 Sheet Nailing 6

5.3 Sheet Orientation 6

5.4 Sheet Penetrations 6

6 Jointing 6

6.1 General 6

7 Finishing 6

7.1 General 6

7.2 Sealants 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]

Contents


3/36

James Hardie Bracing Design ManualOctober 2013New Zealand 3

1 Applicationand scope

1.1 APPLICATION

The James Hardie fibre cement sheets and Scyonrange ofproducts listed below are classified as lightweight cladding

materials and are suitable to achieve structural bracing in timber

framed buildings as per the requirements of NZS 3604 when

installed in accordance with the bracing system requirements.

Refer to Table 2 9 for bracing system capacity.

The following James Hardie products can be used to achieve

bracing:

n VillaboardLining, internal wall lining with recessed or square

edges 6mm and 9mm; suitable for wet and dry areas.

n HardieGroove Lining, internal wall lining with a 'tongue &

groove' look.n RABBoard 6mm* or HomeRABPreClad Lining 3.5mm,

used as rigid air barrier.

n HardieFlex Sheet, 6mm and 7.5mm cladding suitable for

board and batten or used with other jointing options.

n MonotekSheet, 7.5mm and 9mm cladding suitable for

textured monolithic looks.

n ScyonAxonPanel, 9mm suitable for external wall claddings.

with a Vertical Grooved look.

n Scyon Linea Weatherboard, a 16mm thick external wall

cladding in three different widths, 135mm, 150mm and

180mm.

*RAB Board used for stucco plaster is classified as medium weight

cladding as per NZS 3604.

If you are a specifier

Or other responsible party for a project 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 these specifications.

If you are an installer

Ensure that you follow the design, moisture management and

associated details and material selection provided by the designer.

All details provided in this document must be read in conjunction

with this specification.

Make sure your information is up to date

When specifying or installing James Hardie products, ensure you

have the current manual. If youre not sure you do, or you need

more information, visit www.jameshardie.co.nz or Ask James

Hardie on 0800 808 868.

1.2 SCOPE

This manual covers the installation of James Hardie fibre cement

sheets and Scyon range of products to achieve structural bracing

for timber-framed buildings that fall within the scope of NZS 3604.

To achieve bracing ratings published in this literature, each product

must be fixed in accordance with its respective details published in

this manual.

1.3 DETAILS

The bracing system details provided in this document are availablein CAD format on our website www.jameshardie.co.nz.

1.4 SPECIFIC DESIGN AND DETAILING

For specific design outside the scope of this literature, the

designer / architect or engineer responsible for the project must

undertake specific design.

2 Design

2.1 COMPLIANCEAll James Hardie products as mentioned in Section 1.1 have

been tested at BRANZ as per P21 test method to determine their

bracing capacity and bracing systems have been developed to

meet the requirements of NZS 3604. James Hardie products, when

installed and maintained in accordance to James Hardie technical

specification requirements, comply with the requirements of

B1/AS1 Structure, B2/AS1 Durability and E2/AS1 External

Moisture clauses of the New Zealand Building Code (NZBC).

2.2 RESPONSIBILITY

The specifier or other party responsible for the project must run

through a risk matrix analysis as per E2/AS1 to determine which

construction method is applicable to install the external cladding

on the project. The designer must also ensure that the bracing

capacities published in this specification are appropriate for the

intended application. The designer is responsible to calculate the

bracing requirement for a building. The designers must also ensure

that the intent of their design meets the requirements of NZBC.

Substitution of James Hardie fibre cement product with any other

product will change the bracing capacity of a system and James

Hardie accepts no liability due to this. James Hardie bracing

systems are not generic and therefore they must only be installed

as per James Hardie bracing details using a James Hardie product.

All dimensions shown are in millimetres unless noted otherwise.

All New Zealand Standards referenced in this manual 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 expectation before installation. James Hardie will not be

responsible for rectifying the obvious aesthetic surface variations in

product after its installation.


4/36

4 James Hardie Bracing Design ManualOctober 2013New Zealand

Minimum Height:

For bracing panels which are less than 2.4m height, the bracing

rating is to be used as for a 2.4m high wall.

2.8 LENGTH OF BRACING PANELS

There is no limit to the length of bracing elements within a structure.

However buildings outside the scope of NZS 3604 require a

specific engineering design. Due consideration must also be given

to provide control joints or constructions joints in walls to suit

cladding or structural requirements.

2.9 BRACING SHEETS STOPPED BELOW TOPPLATE

Where a bracing sheet is stopped below the top plate an extra rowof nogs (dwangs) must be installed below the top plate to facilitate

the cladding fixing. Refer to Figure 14, 15 and 28 for details.

2.10 BRACING IN WET AREA & WATERSPLASH AREAS

Villaboard Lining can be used to achieve bracing in internal wet

areas (shower) when the sheet is covered by an impervious lining

eg. HardieGlaze Lining / vinyl / acrylic shower lining.

In water splash areas Villaboard Lining must be covered with

waterproofing membranes and tiles.

2.11 IMPACT RESISTANCE

The products covered in this manual have adequate impact

resistance which is likely to occur during the normal use of the

building.

The impact resistance does not apply to rigid air barriers as they are

covered by a cladding.

2.12 MAXIMUM BRACING UNITS

A maximum of 150 BU/m can be achieved for concrete floors and

120 BU/m can be achieved for timber floors in buildings within

the scope of NZS 3604. Higher bracing ratings will exceed the

structural capacity of foundations, slabs and anchors etc and

therefore requires a specific engineering design input.

2.13 SPECIFIC ENGINEERING DESIGN

For some bracing systems using plasterboard lining inside and

James Hardie product on the other side, bracing ratings higher

than 150BUs/m can be achieved. Refer to Tables 4, 7 and 8.

As mentioned above, a specific engineering design must be

undertaken to strengthen the concrete foundation, this may require

increasing foundation thickness or the edge distance between

holding down bolts and outer edge of slab. The structural engineer

should be satisfied that a higher hold down strength of up to 20kN

can be achieved through the bottom plate connections in order to

achieve higher bracing rating.

2.3 SITE AND FOUNDATION

The site on which the building is situated must comply with SurfaceWater Clause E1 of NZBC. The grade of adjacent finished ground

must slope away from the building to avoid any possibility of water

accumulating.

Foundation design must comply with the requirements of

NZS 3604 Timber Framed Buildings.

2.4 GROUND CLEARANCES

The clearance between the bottom edge of claddings and paved/

unpaved ground must comply with section 9.1.3 of E2/AS1. The

finished floor level must also comply with these requirements.

These clearances must be maintained throughout the life of the

building.

James Hardie claddings must overhang the bottom plate by a

minimum of 50mm as required by NZS 3604 and E2/AS1 of NZBC.

On the roofs and decks the minimum clearance must be 50mm.

Do not install external cladding such that it may remain in contact

with the ground.

2.5 MOISTURE MANAGEMENT

It is the responsibility of the specifier to identify moisture related

risks associated with any particular building design.

Wall construction design must effectively manage moisture,

considering 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.

Walls shall include those provisions as required by NZBC

Acceptable Solution E2/AS1 External Moisture. In addition, all

wall openings, penetrations, junctions, connections, window

sills, heads and jambs must incorporate appropriate flashings for

waterproofing. The other materials, components and installation

methods used to manage moisture in external walls, must comply

with the requirements of relevant standards and NZBC.

2.6 WIND LOADING

James Hardie bracing systems are suitable for use in all wind zones

as defined in NZS 3604. For wind speeds more than 55m/sec, (EH

wind zone) a specific engineering design must be undertaken by

the designer to calculate the bracing capacity required.

2.7 HEIGHT OF BRACING PANELS

Maximum Height:

The standard height of James Hardie bracing systems is 2.4m. For

bracing panels which exceed the 2.4m height, the bracing rating

is to be reduced by a multiplication factor of 2.4/H, where H is

the bracing panel height. Dimension H, however, must be limitedto maximum of 4.8m. Refer also to clauses 8.3.1.4 (a) and (b) of

NZS 3604.


5/36


3.7 BOTTOM PLATE FIXING

Bottom plate fixing must be in accordance with the requirementsof NZS 3604 and additional fixing/holding down bolts must be

provided as per bracing systems requirements. Refer to bracing

system details.

3.7.1 TIMBER FOUNDATIONFor fixing framing to timber joists/foundations or floors, the bottom

plate must be fixed in accordance to Table 8.19 of NZS 3604. In

addition to this use Ramset bracing anchor/GIB Handibracwith

coach screw as per the requirement of each bracing system. Refer

to bracing systems details.

3.7.2 CONCRETE FOUNDATIONFor fixing the framing to concrete floors, refer to Figure 6.16 of

NZS 3604. In addition to this use Ramset bracing anchor/GIB

Handibracwith holding down bolts as per the requirement of each

bracing system. Refer to bracing systems details.

3.7.3 HOLDING DOWN RESTRAINTSRamset bracing anchor kits or GIB Handibracwith a 15kN

minimum uplift capacity holding down bolt can be used as end

restraints. Alternatively holding down straps can also be used,

these must be fixed at the end of each bracing element length. The

holding down strap must be 25 x 0.9 x 400mm fixed with 30mm x

2.5mm hot-dip galvanised flat head nails.

Holding down straps can be rebated into the framing to avoid anykick out in claddings or linings.

4 Preparation

4.1 GENERAL

All fibre-cement sheets and Scyon range of products must be kept

dry and under cover whilst in storage prior to fixing.

4.2 BUILDING UNDERLAY OR HOMERABPRECLAD LINING

Building underlay used must comply with the performance

requirements of Table 23 of E2/AS1. The underlay must be installed

in accordance with E2/AS1 and their manufacturers requirements.

In buildings within the scope of NZS 3604 HomeRAB PreClad

Lining can also be used to replace building underlay. HomeRAB

PreClad Lining has been tested and complies with the requirements

of Table 23 of E2/AS1. Walls which are not lined on inside face e.g.

garage walls or gable ends etc. must include a rigid sheathing or

an air barrier behind the wall cladding. HomeRAB PreClad Lining is

suitable for use in these applications, up to and including VH wind

zone.

4.3 WINDOW AND DOOR INSTALLATIONAll windows and doors must be detailed such that they meet the

requirements of E2/AS1, Clause 2.0.1. Refer also to NZS 3604 and

the joinery provider.

3 Timber framing

3.1 GENERAL

These James Hardie bracing systems are suitable for timberframed buildings within the scope of NZS 3604. The framing must

comply with the minimum requirements of NZS 3604 Timber

Framed Buildings. Where the framing is provided as per the

specific engineering design, the minimum framing stiffness must be

equivalent to or more than the stiffness requirements of NZS 3604.

Bracing capacities/ratings and fixing specifications are provided for

each system in the respective details developed for each product.

3.2 DIMENSIONS

A minimum 90x45mm stud size is required for bracing systems.

Refer to James Hardie product technical specification for specific

framing requirements.

3.3 STRUCTURAL GRADE

Minimum timber grade requirement is SG8 framing grade used

as per NZS 3604. The grading of timber should comply with NZS

3631 and AS/NZS 1748 requirements. Higher stress grade such as

MSG10 can be used where needed.

3.4 TOLERANCES

In order to achieve an acceptable wall finish, it is imperative that

framing is straight and true.

Framing tolerances must comply with the requirements of

NZS 3604. All framing shall be made flush.

3.5 DURABILITY

The external framing must be treated to a minimum H1.2 treatment.

Refer to NZBC Acceptable Solution B2/AS1 Durability for further

information about the durability requirements.

For timber treatment and allowable moisture content information

refer to NZS 3602 (Timber and Wood-Based Products for use in

Buildings) and NZS 3640 (Chemical Preservation of Round Sawn

Timber) for minimum timber treatment selection and treatment

requirements.

3.6 FRAME CONSTRUCTION

Timber framing must comply with NZS 3604 Section 8 and

provided as per the following requirements.

Also refer to framing manufacturers specifications before

installation.

n Studs must be provided at 600mm centres maximum.

n Nogs or dwangs must be provided at 1200mm centres

maximum.

n When a cladding is fixed over the cavity battens, the nogs

spacing is required to be provided at 800mm centres

maximum. Refer to Section 9.1.8.5 of E2/AS1.


6/36


5 Sheet fixing

5.1 FASTENER DURABILITY AND SIZE

Coach screws and holding down (HD) bolts, where used, mustbe M12 hot-dipped galvanised steel fitted with 50 x 50 x 3mm

galvanised washers. These must have a protective coating as per

Table 4.2 of NZS 3604.

CLADDINGS:

All nails for fixing the bracing panels in external cladding

applications must be Grade 316 stainless steel in accordance with

NZS 3604.

LININGS:

For dry area internal applications the standard hot dipped

galvanised nails can be used.

For wet area internal applications stainless steel nails must be used.

Note: Fastener sizes are given in the respective details section for each product

or system.

5.2 SHEET NAILING

Nails must be driven at a minimum edge distance as shown in

the bracing details within this specification. This also applies to

dimensions from corners, vertically and horizontally. The sheets

must be held hard against the framing during nailing to minimise

sheet break-out at the back of sheet. Always drive all nails flush

with the sheet surface. For sheet/panel systems do not punch the

nail below the surface as it reduces the nails holding power.

Fix all sheets from the centre working towards outer edges to avoid

drumminess.

5.3 SHEET ORIENTATION

For the bracing systems specified in this manual, all flat sheets

must be fixed vertically with the exception of Villaboard Lining,

which can either be fixed vertically or horizontally as per the bracing

systems details.

Full-height sheets without joints must be used for walls up to

3000mm in height. When bracing walls exceed 3000mm in height,

only one horizontal sheet joint is permitted within the elementheight. The maximum height of bracing wall is limited to 4800mm.

Always ensure that the sheet joint is on the centre line of the stud or

nog to achieve sufficient cover of fixings.

In internal walls the lining sheet used for bracing must stop 6mm up

from the bottom of the bottom plate.

5.4 SHEET PENETRATIONS

No window/door penetrations are allowed, but holes/penetrations

up to 100 x 100mm positioned no closer than 200mm to the

edge of lining or another hole, are allowed for services without

significantly affecting the bracing rating of the lining/cladding.

6 Jointing

6.1 GENERAL

Control joints in flush finished or monolithic claddings are requiredto accommodate movement created by shrinkage and thermal

movement of plasters.

Expansion joints are provided in timber walls to allow for long-term

frame movement that occurs due to structural loading and timber

shrinkage.

Control joints and expansion joints must be determined at the

design stage. For further guidance on jointing refer to the BRANZ

publication Good Stucco Practice.

When bracing walls contain control joint and expansion joints, the

panels must be separated into separate bracing elements on either

side of the joint.

7 Finishing

7.1 GENERAL

Protective coating of James Hardie fibre cement sheet cladding

and Scyon Linea Weatherboards is required in order to meet the

durability requirements of NZBC and to be covered under the

James Hardie Product Warranty. Claddings must be painted within

90 days of installation. Use only quality exterior paints complying

with AS 3730. Manufacturers specification for the selected paintmust be followed. Note that certain special paints require an

undercoat before applying the finish coat. Refer to the relevant

paint manufacturer for preparation required before commencing the

coating work.

7.2 SEALANTS

All sealants must demonstrate they meet the relevant requirements

of NZBC. Application and use of sealants must comply with the

manufacturers instructions. Check with the sealant manufacturer

prior to coating over sealants as some sealant manufacturers do

not recommend coating over their product.


7/36


8 Maintenance

8.1 GENERAL

The extent and nature of maintenance will depend on thegeographical location and exposure of the building. As a guide, it is

recommended that basic normal external maintenance tasks shall

include but not be limited to;

FOR EXTERNAL CLADDINGS:

n Washing down exterior surfaces every 6-12 months*

n Re-applying of exterior protective finishes if necessary**

n Maintaining the exterior envelope and connections including

joints, penetrations, flashings and sealants that may provide a

means of moisture entry beyond the exterior cladding

n Cleaning out gutters, blocked pipes and overflows as required

n Pruning back vegetation that is close to or touching the

building

n The clearances between the bottom of cladding and top of

ground or paved surface must always be maintained

n Any surface drains running next to a wall cladding must be

kept clear of debris to avoid blockage and flooding.

* Do not use a water blaster to wash down the claddings

* In extreme coastal conditions or sea spray zones, wash every 3-4

months.

** Refer to your paint manufacturer for washing down and recoating

requirements related to paint performance.

FOR INTERNAL CLADDINGS:

It is recommended that basic normal internal maintenance tasks

shall include but not be limited to;

n Integrity of various coatings maintained* **

n Maintaining the interior envelope and connections including

joints, penetrations, flashings and sealants that may provide a

means of moisture ingress

* Do not use a water blaster to wash down the lining

** Refer to your paint manufacturer for washing down and recoating

requirements related to paint performance.

9 Productinformation

9.1 MANUFACTURING AND CLASSIFICATION

James Hardie New Zealand is an ISO 9001 Telarc certifiedmanufacturer. Linea Weatherboards and flat sheets

are manufactured in accordance with AS/NZS 2908.2.

Cellulose Cement Products, which is equivalent to ISO 8336

Fibre Cement Flat Sheets.

Each of the products covered by this manual are identified by its

name embossed or printed on either the front or back face of the

sheet.

9.2 SIZES

Refer to respective current product technical specification for

further information about available product sizes.


8/36


10Safe workingpractices

WARNING DO NOT BREATHE DUST AND

CUT ONLY IN WELL VENTILATED AREAJames Hardie products contain sand and 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 that wind will blow dust awayfrom user or others in working area.

2. Use one of the following methods based on the requiredcutting rate:

BESTn Score and snap nHand guillotine n FibreshearBETTERn Dust reducing circular saw equipped with HardieBlade

Saw Blade and HEPA vacuum extraction.GOODn Dust reducing circular saw equipped with

HardieBlade Saw Blade

CUTTING INDOORS

nCut only using score and snap, hand guillotine orfbreshears (manual, electric or pneumatic).

nPosition cutting station in well-ventilated area

DRILLING/OTHER MACHINING

When drilling or machining you should always wear a P1 orP2 dust mask and warn others in the immediate area.

IMPORTANT NOTES

1. For maximum protection (lowest respirable dustproduction), James Hardie recommends always usingBest level cutting methods where feasible

2. NEVER use a power saw indoors3. NEVER use a circular saw blade that does not carry theHardieBlade logo

4. NEVER dry sweep Use wet suppression or HEPAVacuum

5. NEVER use grinders6. ALWAYS follow tool manufacturers safetyrecommendations

P1 or P2 respirators can be used in conjunction with abovecutting practices to further reduce dust exposures. Additionalexposure information is available at www.jameshardie.co.nz tohelp you determine the most appropriate cutting method foryour job requirements. If concern still exists about exposurelevels or you do not comply with the above practices, youshould always consult a qualified industrial hygienist orcontact James Hardie for further information.


9/36


WORKING INSTRUCTIONS

Refer to recommended Safe Working Practices before starting anycutting or machining of product.

SCORE AND SNAP

Score and Snap is a fast and efficient

method of cutting the product using special

tungsten tipped Score and Snap Knife.

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 1/3 of sheet thickness. Snap upwards to

achieve break. Smooth any rough edges with a rasp.

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 BLADEThe HardieBlade Saw Blade used with a dust-

reducing saw and HEPA vacuum extraction

allows for fast, clean cutting of James Hardie fibre

cement products. A dust-reducing saw uses a

dust deflector or a dust collector 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.

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 that the sheet edges are properly supported.

STORAGE AND HANDLING

All James Hardie building products should be stored to avoiddamage, with edges and corners of the sheets protected from

chipping.

James Hardie building products must be installed in a dry state and

be 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 or moisture, etc.

QUALITY

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

following installation.


10/36


11DetailsVarious details outlined in the following table are available on Pages 12 to 30.

Table 1Details

DESCRIPTION FIGURE PAGE

1200mm or more VillaboardLining/HardieGroove Lining to concrete or timber floor Figure 1 12

400mm or 600mm VillaboardLining to concrete or timber floor Figure 2 13

VillaboardLining laid horizontally to concrete or timber floor Figure 3 14

600mm HomeRABPreCladLining to concrete or timber floor Figure 4 17

1200mm HomeRABPreCladLining to concrete or timber floor Figure 5 18

1200mm or more Panel to concrete or timber floor Figure 6 19

400mm or 600mm Panel to concrete or timber floor Figure 7 20

ScyonLineaWeatherboard to concrete or timber floor Figure 8 21

ScyonLineaWeatherboard to concrete or timber floor - VillaboardLining side Figure 9 22

ScyonLineaWeatherboard to concrete or timber floor GIBStandard plasterboard Figure 10 23

End bracket to concrete joist Figure 11 24

End bracket to timber joist Figure 12 24

ScyonLineaWeatherboard face fixing for bracing Figure 12 25

Bracing panel stopped below top plate Figure 14 25

ScyonLineaWeatherboard bracing stopped below top plate Figure 15 26



1200mm wide panel to concrete or timber floor Figure 18 29

Panel to concrete or timber floor centre paling packer Figure 19 29

All bracing panel top plate detail Figure 20 30

2400mm long panel to concrete or timber floor centre paling packer Figure 21 30

Typical vent strip installation Figure 22 31

Structural ceiling diaphragm Figure 223 32


11/36


12Bracing table VillaboardLining

Table 2

VillaboardLining Vertically Fixed

SYSTEM

NUMBER

BRACING

ELEMENT

LENGTH

(mm)

REFER

FIGURES

FLOORING CONSTRUCTION NZS 3604 RATING IN BRACING

UNITS PER METRE OF

ELEMENT LENGTH

TIMBER CONCRETE WIND EARTHQUAKE

Vv

1200 to 2400 1, 11, 12 130* 101

2400 or more 1, 11, 12 125* 98

400 2, 11, 12 81 105

600 2, 11, 12 88 85

VillaboardLining Horizontally Fixed

Vh 2400 or more 3, 11, 12 161* 135*

*A limit of 120BUs/m maximum applies to timber floors and 150BUs/m maximum to concrete floors built as per NZS 3604: 2011 unlessa specific engineering design is carried out to ensure the uplift force generated by bracing elements does not exceed the maximum limitfor each floor type.

Table 3

HardieGroove Lining

SYSTEM

NUMBER

BRACING

ELEMENT

LENGTH

(mm)

REFER

FIGURES


UNITS PER METRE OF

ELEMENT LENGTH


HG 1200 1, 11, 12 154* 153*



12/36


Figure 1: 1200mm or more VillaboardLining/HardieGroove Lining to concrete or timber floor

Product System Minimum length

VillaboardLining Vv 1200mm

HardieGroove Lining HG 1200mm

13Bracing figures linings


13/36



VillaboardLining Vv 400 or 600mm

Figure 2: 400mm or 600mm VillaboardLining to concrete or timber floor


14/36


Figure 3: VillaboardLining laid horizontally to concrete or timber floor


VillaboardLining Vh 2400mm


15/36


Table 4

HomeRABPreClad Lining

SYSTEM

NUMBER

BRACING

ELEMENT

LENGTH

(mm)

REFER

FIGURES


UNITS PER METRE OF

ELEMENT LENGTH


HR

600 4, 11, 12 98 84

1200 or 2400 5, 11, 12 98 76

2400 or more 5, 11, 12 97 77

14Bracing tables

Table 5

RABBoard 6mm and HardieFlex 6mm and 7.5mm bracing ratings

SYSTEM

NUMBER

BRACING

ELEMENT

LENGTH

(mm)

REFER

FIGURES


UNITS PER METRE OF

ELEMENT LENGTH


DIRECT FIXED CONSTRUCTION

JHD

1200 to 2400 6, 11, 12 154* 140*

2400 or more 6, 11, 12 135* 150*

400 7, 11, 12 83 107

600 7, 11, 12 99 107


Table 6

ScyonAxonPanel 133 and ScyonAxonPanel 400 bracing ratings

SYSTEM

NUMBER

BRACING

ELEMENT

LENGTH

(mm)

REFER

FIGURES


UNITS PER METRE OF

ELEMENT LENGTH



AP1200 to 2400 6, 11, 12 150* 157*

2400 or more 6, 11, 12 149* 135*



16/36


Table 8

RABBoard 6mm / HardieFlex 6mm and 7.5mm / MonotekSheet bracing ratings

SYSTEM

NUMBER

BRACING

ELEMENT

LENGTH

(mm)

REFER

FIGURES


UNITS PER METRE OF

ELEMENT LENGTH


CAVITY FIXED CONSTRUCTION

JHC1200 to 2400 16, 18, 19, 20 147* 121*

2400 or more 17, 18, 20, 21 157* 142*


Table 9

ScyonAxonPanel bracing ratings

SYSTEM

NUMBER

BRACING

ELEMENT

LENGTH

(mm)

REFER

FIGURES


UNITS PER METRE OF

ELEMENT LENGTH


CAVITY FIXED CONSTRUCTION

APC 1200 to 2400 16, 18, 19, 20 154* 166*


Table 7

ScyonLineaWeatherboard bracing ratings

SYSTEM

NUMBER

BRACING

ELEMENT

LENGTH

(mm)

REFER

FIGURES


UNITS PER METRE OF

ELEMENT LENGTH



LWV1200 to 2400 8, 9, 11, 12, 13 130* 101

2400 or more 8, 9, 11, 12, 13 125* 98

LWG1200 to 2400 8, 10, 11, 12, 13 91 80

2400 or more 8, 10, 11, 12, 13 75 67

V at end of System number = VillaboardLining used as liningG at end of system number = GIBStandard plasterboard used as lining.

*A limit of 120BUs/m maximum applies to timber floors and 150BUs/m maximum to concrete floors built as per NZS 3604: 2011 unless

a specific engineering design is carried out to ensure the uplift force generated by bracing elements does not exceed the maximum limitfor each floor type.


17/36


15Bracing figures

Figure 4: 600mm HomeRABPreClad Lining to concrete or timber floor


HomeRABPreClad Lining HR 600mm


18/36


Figure 5: 1200mm HomeRABPreClad Lining to concrete or timber floor


HomeRABPreClad Lining HR 1200mm


19/36


16Bracing figures claddings (direct fix)

Figure 6: 1200mm or more Panel to concrete or timber floor

Product System Number Minimum length

HardieFlex Sheet / RABBoard JHD 1200mm

ScyonAxonPanel AP 1200mm


20/36


Figure 7: 400mm or 600mm Panel to concrete or timber floor


HardieFlex Sheet / RABBoard JHD 400 or 600mm


21/36


Figure 8: ScyonLineaWeatherboard to concrete or timber floor


ScyonLineaWeatherboard / VillaboardLining LWV 1200mm

ScyonLineaWeatherboard / GIBStandard plasterboard LWG 1200mm


22/36


Figure 9: ScyonLineaWeatherboard to concrete or timber floor - VillaboardLining side


ScyonLineaWeatherboard / VillaboardLining LWV 1200mm


23/36


Figure 10: ScyonLineaWeatherboard to concrete or timber floor GIBStandard plasterboard


ScyonLineaWeatherboard / GIBStandard plasterboard LWG 1200mm


24/36


Figure 12: End bracket to timber joist

17Bracing connection figures (direct fix)

Figure 11: End bracket to concrete joist


25/36


Figure 13: ScyonLineaWeatherboard face fixing for bracing

Figure 14: Bracing panel stopped below top plate


26/36


Figure 15: ScyonLineaWeatherboard bracing stopped below top plate


27/36



Maximu

mstu

dcentre

s

600m

m

600m

m

150m

mcentre

stofix

cladding

800mm

8

00mm

800mm

25mm

Note:All bottom packers must be

set to a slope of 5 minimum

Bracingeleme

ntheight

50mm

overhang

B

racing

elem

entle

ngth

FIBRE CEMENT FIXING DETAILS

Notes for Figure 16:

Concrete floorbottom plate fixing:- Ramset bracing anchor kit Concrete or GIB Handibrac with 15kN anchor at each

end of bracing element

Timber floor bottom plate fixing:- Ramset bracing anchor kit Wood or GIB Handibrac with a 12x150mm galvanised

coach screw at each end of bracing element

Edge Fixing Distance:-HardieFlexTMSheet, MonotekSheet and RABBoard - minimum 12mm.

ScyonAxonPanel - minimum 18mm

60 x 3.15mm 316 stainless

steel HardieFlexTMnails to

fix paling packer

150 x 19mm paling packer

treated H3.1 minimum

All vertical fixings at 150mm

centres using 60 X 3.15mm

316 stainless steel

HardieFlexTMnails

Minimum edge distance

refer notes

Timber framing treated H1.2

minimum

Fix battens with 40 x 2.8mm

316 stainless steel

HardieFlexTMnails to plates

and nogs

45 x 19mm timber cavity

battens at 300mm centres


Bracing sheet

Bottom plate fixed as per

NZS 3604

Bracket at end of bracing

element

Concrete or timber floor





fix cladding at 100mm

centres to bottom plate



fix paling packer

Refer Figure 19

Refer Figure 18

Proprietary hold

down bolt/bracket at

end of bracing

element

Refer Figure 20


HardieFlex Sheet / RABBoard /MonotekSheet

JHC 1200mm

ScyonAxonPanel APC 1200mm

18Bracing connection figures (cavity fix)


28/36



Maxim

umstud

centr

es

600m

m

600m

m

150m

mce

ntres

tofix

cladding

800mm

800mm

800mm

25mm

Note:All bottom packers must be

set to a slope of 5 minimum

Bracingelem

entheight

50mm

overhang

Bracing

elem

entle

ngth

FIBRE CEMENT FIXING DETAILS

Notes for Figure 17:

Concrete floorbottom plate fixing:- Ramset bracing anchor kit Concrete or GIB Handibracwith 15kN anchor at each

end of bracing element

Timber floor bottom plate fixing:- Ramset bracing anchor kit Wood or GIB Handibracwith a 12x150mm galvanised

coach screw at each end of bracing element

Edge Fixing Distance:-HardieFlexTMSheet, MonotekSheet and RABBoard - minimum 12mm.



fix paling packer



All vertical fixings at 150mm

centres using 60 X 3.15mm

316 stainless steel

HardieFlexTMnails

Minimum edge distance

refer notes

Timber framing treated H1.2

minimum

Fix battens with 40 x 2.8mm

316 stainless steel

HardieFlexTMnails to plates

and nogs

45 x 19mm timber cavity

battens at 300mm centrestreated H3.1 minimum

Bracing sheet

Bottom plate fixed as per

NZS 3604

Bracket at end of bracing

element

Concrete or timber floor





fix cladding at 100mm

centres to bottom plate



fix paling packer

Refer Figure 19

Refer Figure 18

Proprietary hold

down bolt/bracket atend of bracing

element

Refer Figure 20

Vertical fixings at 100mm

centres where sheets butt

together


HardieFlex Sheet / RABBoard /MonotekSheet

JHC 2400mm


29/36


Figure 19: Panel to concrete or timber floor centre paling packer

Figure 18: 1200mm wide panel to concrete or timber floor


30/36


Figure 21: 2400mm long panel to concrete or timber floor centre paling packer

Figure 20: All bracing panel top plate detail


31/36


Figure 22: Typical vent strip installation


32/36


19Structual ceiling diaphragm

James Hardie ceiling lining products can also be used for a ceiling

diaphragm construction in accordance with NZS 3604.

The following products can be used as a structural diaphragm

n Villaboard Lining 6mm and 9mm or

n HardieFlex Sheet 4.5mm and 6mm.

The ceiling diaphragm shall be constructed to comply with the

following requirements;

n The length of a ceiling diaphragm must not exceed twice

its width. The length and width will be measured between

supporting walls. They shall be no longer than 12m with an

aspect ratio (length divided by width) no greater than 2.

n The sheet size must not be less than 1800 x 900mm except

where buildings dimensions restricts the use of this size.

n The sheets are to be installed as per Figure 23.

n All sheet edges must be supported with framing behind.Always maintain a minimum 12mm edge distance for sheet

fixing.

n James Hardie sheets can also be used to construct sloping

ceiling diaphragms where the slope of ceiling is not over 45

degree from the horizontal plane.

n The sheets must be laid in a staggered pattern as shown.

n Each bracing line along length = L or along width = W shall

have a bracing capacity of not less than 15bu/m of L or W

measured at right angles to the line being considered.

n Refer to NZS 3604, section 5.6 for further information on

diaphragms

Figure 23: Structural ceiling diaphragm

Line A and B must have minimum bracing capacity100 bus or 15 x W, whichever is higher.

Line L and M must have minimum bracing capacity100 bu's or 15 x L, whichever is higher.

L = Length

W

=Width

A

B

L M


33/36


WALL BRACING CALCULATION SHEET

For use in conjunction with NZS 3604

Name of Project: ..................................................................................................................................................................................

Site of Address: ....................................................................................................................................................................................

Lot and DP Number: ............................................................................................................................................................................

BRACING DESIGN INFORMATION AS PER NZS 3604

1. WIND BRACING DEMAND:

Determine wind region A / W Refer Figure-5.1

Determine ground roughness: Urban / Open Refer Clause 5.2.3

Determine site exposure: Sheltered / Exposed Refer Clause 5.2.4

Determine topographic class: T1, T2, T3, T4Refer Clause 5.2.5, Figure 5.2, Table 5.2 and 5.3

Determine wind zone: L, M, H, VH, EH Refer Table 5.1

Wind zone from Table 5.4Minimum Number of BUs/m for building length and width fromtable 5.5, 5.6, and 5.7.

Building height to apex: H =

W Across = BU/m Length of wall(Applies across ridge for gable roof, Applies across and along for hip roof)

W Along = BU/m Length of wall(Applies along ridge for gable roof)

Total Bracing Required For Wind:

W Across x Length of Wall Across =

W Along x Length of Wall Along =

Roof height above eaves: h =

Stud height: =

Storey location:(Strike out which is not

applicable)

Wall in foundation

Wall above subfloor structure single storey orupper storey

Wall above subfloor structure lower of two storeys

*Use separate sheet for each storey.

2. EARTHQUAKE BRACING DESIGN:

Refer to Figure 5.4 and select the Earthquake Zone. Zone: .................................

Wall cladding weight:n Lightn Mediumn

Heavy

Roof cladding weight:n Lightn Heavy

Roof slope:n 0-25n 26-45n

46-60

Select storey location to be assessed as per Table 5.8, 5.9 and 5.10

n Single storey building on subfloor frame. Refer Table 5.8n Two storey building on subfloor frame. Refer Table 5.9n Single or two storey building on concrete slab-on-ground. Refer Table 5.10

Select bracing demand in BUs/m of floor area from one ofthe above mentioned Tables ............ BU/m2*

Part storey in roof space Yes / NoIf yes, increase bracing demand obtained above by 4 BUs/m.Refer to NZS 3604 Section 5.3.4.3

Part storey in basement Yes / No If yes, building shall be regarded as two buildings, refer section 5.3.4.4 ofNZS 3604 for information

Total floor area : m Total bracing required for earthquake:

Area ............ x ............ BUs/m2* = ............ BUs

*Use separate sheet for each storey.

20Bracing calculation tables


34/36

34 James Hardie Bracing Design ManualOctober 2013New Zealand34 James Hardie Bracing Design ManualOctober 2013New Zealand

WALL BRACING CALCULATION SHEET B

Name of Project: ..................................................................................................................................................................................


35/36


WarrantiesOctober 2013

WARRANTY: All James Hardie products have a standard product warranty. Refer to the relevant literature for the product warranties


36/36

james hardi bracing design manual

Documents