3421MF
RONDO MAXIFRAME EXTERNAL WALL FRAMING SYSTEM
1
GENERAL

If you have pre-customised this work section using the "questions and answers" provided as part of the downloading process, it may be necessary to amend some clauses to suit the final project-specific version.

The section must still be checked and customised to suit the project being specified, by removing any other irrelevant details and adding project-specific details and selections.

 

This section relates to the supply and erection of Rondo Building Services Pty Ltd Rondo MAXIframe® External Wall Framing system as light-weight steel framing in external wall construction.

It includes:

Modify / expand this clause to suit requirements of the final version of the section.

 

Rondo Building Services Pty Ltd offer an engineering design service, delivering project specific documentation prior to consent and tender.  A detailed wind and seismic report as part of the consultant supplied information may be required in order to undertake a design.  If required a PS1 from an independent engineer can be provided for a fee, this process is facilitated by Rondo.  By contacting Rondo through the Masterspec work section support function, the design service can be coordinated with this specification section and other consultant documentation.  Rondo project specific documentation can be attached within the specification Contract Appendix.

 

The Rondo project specific documentation provides a similar level of documentation to shop drawings.  Shop drawings can be provided if the design service is not required.

1.1
RELATED WORK

Refer to 4161 UNDERLAYS, FOIL AND DPC for wall underlay.

Refer to ~ for ~

The section(s) stated above are often necessary to support this section, consider carefully and ensure they are included in the project specification if required.

Include cross references only to other work sections where they include directly related work.

1.2
ABBREVIATIONS AND DEFINITIONS

Refer to the general section 1232 INTERPRETATION & DEFINITIONS for abbreviations and definitions used throughout the specification.

 

The following abbreviations apply specifically to this section:

BMT

Base Metal Thickness

Documents
1.3
DOCUMENTS

Refer to the general section 1233 REFERENCED DOCUMENTS.  The following documents are specifically referred to in this section:

NZBC B1/VM1

Structure general

AS/NZS 1170.0

Structural design actions - General principles

AS/NZS 1170.1

Structural design actions - Permanent, imposed and other actions

AS/NZS 1170.2

Structural design actions - Wind actions

NZS 1170.5

Structural design actions - Earthquake actions - New Zealand

AS 1397

Continuous hot-dip metallic coated steel sheet and strip - Coatings of zinc and zinc alloyed with aluminium and magnesium

AS/NZS 4600:2005

Cold formed steel structures

Documents listed above and cited in the clauses that follow are part of this specification.  However, this specification takes precedence in the event of it being at variance with the cited document.

Delete from the DOCUMENTS clause any document not cited.  List any additional cited document.

 

Note - AS/NZS 4600:2005 Amendment 1 is cited by NZBC, but AS/NZS 4600:2018 has not at the time of writing been cited by NZBC. This section uses the 2005 Amendment 1 version as an Acceptable Solution; consult with the BCA as to their requirements if you want to use the 2018 version as an Alternative Solution.

 

The following are related documents and if referred to in the work section need to be added to the list of DOCUMENTS:

AS/NZS 3000

Electrical installations (known as the Australian/New Zealand Wiring Rules)

Electricity (Safety) Regulations 2010 (Reprint as at 21 January 2019).

 

AS/NZS 3000:2007 is cited in the Electricity (Safety) Regulations 2010, which is cited by NZBC.   At the time of writing, however, AS/NZS 3000:2018 is not cited.   This section uses both versions where they equally apply, and a date is suffixed where there is a difference e.g. the 2018 version covers most recent technologies.   Amend the section if you want to use a particular version or a particular instance (by suffixing with the version date e.g. AS/NZS 3000:2018).

1.4
MANUFACTURER/SUPPLIER DOCUMENTS

Manufacturer and supplier documents relating to this part of the work:

Rondo Professional Design Manual

List documents relating to this part of the work, i.e. technical product/system specifications, test reports, appraisals, certification, etc. Normally they will be referred to in the text by the abbreviated title.

 

Manufacturer/supplier contact details

Company:

Rondo Building Services Pty Ltd

Web:

www.rondo.co.nz

Email:

Steve.Hardy@rondo.co.nz

Telephone:

09 636 5110

It is important to ensure that all personnel on-site have access to accurate, up to date technical information on the many products, materials and equipment used on a project.  In most cases individual products are not used in isolation, but form part of a building process.  Also a particular manufacturer and/or supplier requirements for handling, storage, preparation, installation, finishing and protection of their product can vary from what might be considered the norm.  Access to technical information can help overcome this potential problem.

Warranties
1.5
WARRANTY - MANUFACTURER/SUPPLIER

Provide a material manufacturer/supplier warranty:

10 years

For Rondo branded products against defects in materials under normal use.

 

  • Provide this warranty on the manufacturer/supplier standard form.
  • Commence the warranty from the date of purchase.

 

Refer to the general section 1237 WARRANTIES for additional requirements.

Modify or expand the clause to suit project or manufacturer/supplier requirements, options include:

  • Modify the form to be used
  • Commence the warranty from the date of practical completion of the contract works (check with the manufacturer/supplier)]
Requirements
1.6
QUALIFICATIONS GENERALLY

Refer to 1270 CONSTRUCTION for requirements relating to qualifications.

Work to be carried out by tradespeople experienced, competent and familiar with the materials and techniques specified.

This clause includes generic text which should be expanded only if there are specific qualification requirements.

1.7
NO SUBSTITUTIONS

Substitutions are not permitted to any of the specified systems, components and associated products listed in this section.

1.8
RONDO SPECIFIC DESIGN DOCUMENTS

Refer to SELECTIONS for project specific design documentation by Rondo Building Services Pty Ltd, generally consisting of:

  • Design calculations
  • Dimensioned elevations of elements
  • Details of construction, connections and support systems
  • Dimensions of all typical elements
  • Jointing details and method of fixing between individual elements and between this installation and adjacent work
  • Provision for thermal movement
  • Provision for seismic movement and movement under prevailing wind loads
  • Bracing requirements, due to wind and seismic loads
  • A schedule of materials, finishes and componentry

Rondo Building Services Pty Ltd offer an engineering design service, delivering project specific documentation prior to consent and tender as an alternative to the Shop Drawing process.  A detailed wind and seismic report as part of the consultant supplied information may be required in order to undertake a design.

 

By contacting Rondo through the Masterspec work section support function, the design service can be coordinated with this specification section and other consultant documentation.  Rondo project specific documentation can be attached within the specification Contract Appendix.

1.9
SHOP DRAWINGS

Refer to the general section 1235 SHOP DRAWINGS for the requirements for submission and review and the provision of final shop drawings.

 

Provide shop drawings to show the general arrangement including, but not be limited to:

  • Design calculations.
  • Fully dimensioned elevations of all elements
  • Complete details of construction, connections and all support systems
  • Dimensions of all typical elements
  • Jointing details and method of fixing between individual elements and between this installation and adjacent work
  • Provision for thermal movement
  • Provision for seismic movement and movement under prevailing wind loads
  • Bracing requirements, due to wind and seismic loads (indicate any design and construction work by others, to meet these requirements)
  • Sequence of installation
  • Co-ordination requirements with other work
  • A full schedule of materials, finishes and componentry.

The general section 1235 SHOP DRAWINGS describes the process of submission and review of shop drawings.  Use this clause to describe the specific requirements of what the required shop drawings are to include.

 

Rondo Building Services Pty Ltd offer an engineering design service, delivering project specific documentation prior to consent and tender as an alternative to the Shop Drawing process.

 

By contacting Rondo through the Masterspec work section support function, the design service can be coordinated with this specification section and other consultant documentation.  Rondo project specific documentation can be attached within the specification Contract Appendix.

 

Rerun the Q&A if required to obtain the Rondo design service clause content.  Delete this clause if using the Rondo design service.

1.10
DISSIMILAR METALS

Avoid contact with dissimilar metals.  Ensure plumbers take care to isolate copper piping from steel framing.

Compliance information
1.11
INFORMATION REQUIRED FOR CODE COMPLIANCE

Provide the following compliance documentation:

  • Manufacturer / supplier warranty
  • Producer Statement (PS3) - Construction from the applicator / installer
  • Producer Statement (PS4) - Construction Review from an acceptable suitably qualified person
  • Other information required by the BCA in the Building Consent Approval documents.

Producer Statements - Construction (PS3) required from installers that are required as a condition of carrying out this work.

Producer Statements - Construction Review (PS4) required from consultants to be engaged by the Contractor.

1.12
PRODUCER STATEMENT - DESIGN

Refer to SELECTIONS for an independent Producer Statement - Design (PS1).

A PS1 from an independent engineer can be provided for a fee.  Rondo are willing to facilitate this process.

Performance

Use the following clause whether specifying by performance or not.

1.13
LOADING CODE REQUIREMENT

In some seismic areas the connection details may not be valid.  Refer to Rondo Building Services Pty Ltd for advice.

Performance - Wind (design by contractor)

This clause is setting a standard of performance for design by the contractor, to meet.  Specifiers should therefore consider adding some means of confirming (say by testing or certification) that the performance criteria will be or has been met.

Ensure correct information is supplied in 1220 PROJECT.

1.14
DESIGN PARAMETERS WIND - DESIGN BY CONTRACTOR

Design the installation to the wind pressure parameters of AS/NZS 1170.2.  Refer to general section 1220 PROJECT for details.  Contact Rondo Building Services Pty Ltd for the engineering design service and a Producer Statement - Design (PS1) for code compliance documents.

Obtain information from the project structural engineer.

Delete the clause if it does not apply and the contractor is not expected to design.

Performance - Seismic (design by contractor)

This clause is setting a standard of performance for design by the contractor, to meet.  Specifiers should therefore consider adding some means of confirming (say by testing or certification) that the performance criteria will be or has been met.

Ensure correct information is supplied in 1220 PROJECT.

1.15
SEISMIC - SPECIFIC DESIGN

Design the system and its anchorages/fixings to resist the earthquake loads of the seismic zone in accordance with NZS 1170.5.  Refer to general section 1220 PROJECT for details.  Contact Rondo Building Services Pty Ltd for the engineering design service and a Producer Statement - Design (PS1) for code compliance documents.

Obtain information from the project structural engineer.

Delete the clause if it does not apply and the contractor is not expected to design.

2
PRODUCTS
Materials - 92mm stud system
2.1
WALL STUD

Rondo 92mm x 33mm x 1.15 BMT wall stud to AS/NZS 4600.  Steel grade and zinc coating class G2 Z275 to AS 1397 with preformed service holes to stud webs.

Delete clause if using MAXIjamb studs exclusively.  G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².

2.2
JAMB STUD

Rondo 92mm x 70mm x 1.20 BMT MAXIjamb stud to AS/NZS 4600.  Steel grade and zinc coating class G500 (Structural grade) Z275 to AS 1397.

The MAXIjamb stud is used to trim wall openings and as a wall stud for higher load applications.

Z275 refers to a zinc coating class with a coating mass of 275g/m²

2.3
SLOTTED DEFLECTION HEAD TRACK

Rondo MAXItrack, 92mm x 1.15 BMT slotted deflection head track section to AS/NZS 4600.  Steel grade and zinc coating class G2 Z275 to AS 1397.

G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².

2.4
WALL TRACK

Rondo 92mm x 32mm x 1.15 BMT wall track section to AS/NZS 4600.  Steel grade and zinc coating class G2 Z275 to AS 1397.

G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².

2.5
NOGGING TRACK

Rondo 92mm x 0.70 BMT nogging track to AS/NZS 4600.  Steel grade and zinc coating class G2 Z275 to AS 1397, with preformed holes for services and to suit stud size.

G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².  The nogging tracks are double punched to suit larger MAXIjamb stud sizes.

Materials - 150mm stud system
2.6
WALL STUD

Rondo 150mm x 33mm x 1.15 BMT wall stud to AS/NZS 4600.  Steel grade and zinc coating class G2 Z275 to AS 1397 with preformed service holes to stud webs.

Delete clause if using MAXIjamb studs exclusively.  G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².

2.7
JAMB STUD

Rondo 150mm x 70mm x 1.20 BMT MAXIjamb stud to AS/NZS 4600.  Steel grade and zinc coating class G500 (Structural grade) Z275 to AS 1397.

The MAXIjamb stud is used to trim wall openings and as a wall stud for higher load applications.

Z275 refers to a zinc coating class with a coating mass of 275g/m²

2.8
SLOTTED DEFLECTION HEAD TRACK

Rondo MAXItrack, 150mm x 1.15 BMT slotted deflection head track section to AS/NZS 4600.  Steel grade and zinc coating class G2 Z275 to AS 1397.

G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².

2.9
WALL TRACK

Rondo 150mm x 50mm x 1.15 BMT wall track section to AS/NZS 4600.  Steel grade and zinc coating class G2 Z275 to AS 1397.

G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².

2.10
NOGGING TRACK

Rondo 150mm x 0.70 BMT nogging track to AS/NZS 4600.  Steel grade and zinc coating class G2 Z275 to AS 1397, with preformed holes for services and to suit stud size.

G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².  The nogging tracks are double punched to suit larger MAXIjamb stud sizes.

Components
2.11
CLEATS

Base bracket, sill bracket and slotted head bracket cleats, steel grade and zinc coating class G2 Z275 to AS 1397.

Used to connect MAXIjamb members to structure and between MAXIjamb members framing openings.

2.12
FIXINGS

Wafer head tek screws as detailed in Rondo Professional Design Manual and to Rondo Building Services Pty Ltd requirements.  Refer to SELECTIONS for fixing types to structure.

2.13
TOP HAT SECTIONS

Rondo top hat sections 1.15 BMT steel.  Steel grade and zinc coating class G2 Z275 to AS 1397.  Refer to SELECTIONS for size.

Top hat sections over steel stud framing can be used for cladding and composite panel support.

G2 refers to a steel grade designation under formability grades, Z275 refers to a zinc coating class with a coating mass of 275g/m².

2.14
UNDERLAYS

Breather type, waterproof to NZS 2295.  Refer to 4161 UNDERLAYS, FOIL AND DPC.

The use of underlay with steel frames requires consideration of many factors, the type of construction and the type of cladding.  Generally follow the same basic rules as for timber; non- absorbent claddings require an absorbent underlay, while absorbent claddings do not.

2.15
CAVITY BATTENS

Battens to suit application, refer to SELECTIONS.

2.16
THERMAL BREAKS

Thermal breaks to suit application, refer to SELECTIONS.

Cold bridging can lead to condensation forming on the steel studs.  Thermal breaks are used to reduce cold bridging and are created by fixing insulation to the outside face of the steel framing.  Refer to Rondo Building Services Pty Ltd and cladding manufacturer for advice.

3
EXECUTION
Conditions
3.1
DELIVERY, STORAGE & HANDLING OF PRODUCTS

Refer to 1270 CONSTRUCTION for requirements relating to delivery, storage and handling of products.

Use this standard generic clause and if appropriate add additional special requirements.

3.2
ROUTINE MATTERS

Refer to 1250 TEMPORARY WORKS & SERVICES for protection requirements.

Refer to 1270 CONSTRUCTION for requirements relating to defective or damaged work, removal of protection and cleaning.

Use this standard generic clause and if appropriate add additional special requirements.

3.3
SUBSTRATE

Ensure substrate is plumb, level and in true alignment.  Do not start erection if the substrate will not allow work of the required standard. Complete any remedial work found necessary before starting light steel framing erection.

Rondo Building Services Pty Ltd does not require DPC separation between concrete (pH range of 8-9) and the Rondo MAXIframe® External Wall Framing system.

3.4
COMMENCING THIS WORK

Commencing this work means the substrate is accepted as allowing work of the required standard.

Installation/application
3.5
INSTALLATION - GENERAL

Installation to Rondo Professional Design Manual and Rondo Building Services Pty Ltd requirements.  Fix, erect and fit to finish rigid, plumb, square and true to line and face.

3.6
INSTALLATION - SPECIFIC

Refer to SELECTIONS for Rondo Building Services Pty Ltd project specific design documentation.

3.7
SETTING OUT

Set out the framing work true to line and square before starting erection.

3.8
ISOLATE

Isolate dissimilar metals with neoprene sheeting, tape or pipe lagging.

Isolate Stainless steel brick ties from the galvanised steel framing members.

3.9
INSTALL TRACK SECTIONS

Fit base track and slotted deflection head track in position.  Refer to SELECTIONS for fixings.

Expand clause to suit project requirements.

3.10
INSTALL STUDS & NOGGING TRACKS

Cut studs to length to accommodate required clearances.  Fit nogging tracks into base tracks with flanges facing the floor.  Fit studs into pre-punch holes in the nogging tracks and into both the base track and the head track with the service holes starting from the bottom.  Rotate the stud into position with studs orientated in the same direction.  Lift and position nogging track, screw to studs and complete all fixings.  Do not splice stud members unless specifically designed by Rondo Building Services Pty Ltd.

3.11
FORM OPENINGS - 92MM STUD SYSTEM

Cut the MAXIjamb stud to size for vertical and horizontal applications.  Fix the vertical MAXIjamb stud to the base track with 201 base bracket and to the top track with 203 slotted jamb head bracket.  Screw fix 202 sill brackets to the vertical MAXIjamb studs.  Install the horizontal MAXIjamb stud head and sill members to the 202 sill bracket by rolling into place and screw fixing. Screw fix Rondo track to horizontal MAXIjamb members with track facing up for head detail and facing down for sill details. Cut jack studs to size and fix into track sections above and below trimmed openings to Rondo Building Services Pty Ltd requirements.

3.12
FORM OPENINGS - 150MM STUD SYSTEM

Cut the MAXIjamb stud to size for vertical and horizontal applications.  Fix the vertical MAXIjamb stud to the base track with 205 base bracket and to the top track with 207 slotted jamb head bracket.  Screw fix 206 sill brackets to the vertical MAXIjamb studs.  Install the horizontal MAXIjamb stud head and sill members to the 206 sill bracket by rolling into place and screw fixing. Screw fix Rondo track to horizontal MAXIjamb members with track facing up for head detail and facing down for sill details. Cut jack studs to size and fix into track sections above and below trimmed openings to Rondo Building Services Pty Ltd requirements.

3.13
UNDERLAYS

Refer to 4161 UNDERLAYS, FOIL AND DPC.

The use of underlay with steel frames requires consideration of many factors, the type of construction and the type of cladding.  Generally follow the same basic rules as for timber; non- absorbent claddings require an absorbent underlay, while absorbent claddings do not.

3.14
INSTALL TOP HAT SECTIONS

Install top hat sections to Rondo Building Services Pty Ltd requirements

Rondo Building Services Pty Ltd offer an engineering design service for external wall systems, expand this clause to suit project requirements.

 

3.15
INSTALL THERMAL BREAKS

Install thermal breaks to thermal break manufacturer and Rondo Building Services Pty Ltd requirements.

Modify/expand clause to suit project requirements.

3.16
INSTALL CAVITY BATTENS

Install cavity battens to cavity batten manufacturer and Rondo Building Services Pty Ltd requirements.

Modify/expand clause to suit project requirements.

3.17
EARTHING STRUCTURAL LIGHT STEEL FRAMING

If it is a project electrical requirement, ensure that any electrically at-risk, light steel frames or isolated members, are earthed (or at least conductor cable attached) before it is enclosed.

Amend clause to suit or delete clause if there is no at risk light steel framing (refer to AS/NZS 3000, 5.4.6).

The exceptions to earthing are based on risk, which largely means no electrical cables or equipment in the vicinity of the metalwork.  If there are cables in the vicinity of the steel, the electrician will have to make the assessment.

If electrical design is to AS/NZS 3000:2007 (cited in NZBC G9/VM1), cl 5.4.6.2, any structural metalwork in a domestic dwelling must be earthed regardless of risk (clause deleted in AS/NZS 3000:2018 [not cited in NZBC]).

Expert advice is recommended if in doubt.

This clause applies to all building types including houses.

Completion
3.18
COMPLETION MATTERS

Refer to 1270 CONSTRUCTION for completion requirements and if required commissioning requirements.

Use this standard generic clause and if appropriate add additional special requirements.

4
SELECTIONS

For further details on selections go to www.rondo.co.nz

Substitutions are not permitted to the following, unless stated otherwise.

If substitutions are permitted modify the statement above, ensure the NO SUBSTITUTIONS clause from GENERAL is treated the same.

 

Select the options to suit the project and delete options not specified.

Design documentation
4.1
RONDO SPECIFIC DESIGN

Document:

~

Submitted:

~

Available:

~

Document:

Identify Rondo specific design documents

Submitted:

Building consent, tender (or both)

Available:

Specification Contract Appendix, or describe alternative

4.2
PRODUCER STATEMENT - DESIGN

PS1:

~

Available:

~

A PS1 from an independent engineer can be provided for a fee, this process is facilitated by Rondo.

PS1:

Identify the producer statement - design (PS1)

Available:

Specification Contract Appendix, or describe alternative

Materials
4.3
92MM RONDO MAXIFRAME EXTERNAL WALL FRAMING SYSTEM

Location:

~

Supplier:

Rondo Building Services Pty Ltd

Wall stud:

~

Stud centres:

~

Head track:

S683 - MAXItrack 92mm x 1.15 BMT slotted deflection head track

Wall track:

680 - 92mm x 32mm x 1.15 BMT

Nogging track:

506 - 92mm x 0.70 BMT ~

Jamb stud:

200 - MAXIjamb Stud 92mm x 1.20 BMT

Sill member:

200 - MAXIjamb Stud 92mm x 1.20 BMT & 681 - 92mm x 1.15 BMT

Head member:

200 - MAXIjamb Stud 92mm x 1.20 BMT & 681 - 92mm x 1.15 BMT

Cleats:

201 - 92mm x 2.9mm base bracket

 

202 - 92mm x 1.5mm sill bracket

 

203 - 92mm x 2.9mm slotted head bracket

Fixings

Wall track to structure ~

 

Head track to structure ~

 

Base bracket to structure ~

 

Slotted head bracket to structure ~

Jamb studs and cleats are required to frame up openings, modify if required to suit project requirements.

Wall stud:

681 - 92mm x 1.15 BMT

 

200 - MAXIjamb Stud 92mm x 1.20 BMT

Nogging track:

Refer to Rondo Professional Design Manual and Rondo Building Services Pty Ltd requirements for nogging track spacing.

Fixings:

Sections designed for 10mm expanding type anchors, nominate fixings/spacing to suit project requirements.

4.4
150MM RONDO MAXIFRAME EXTERNAL WALL FRAMING SYSTEM

Location:

~

Supplier:

Rondo Building Services Pty Ltd

Wall stud:

~

Stud centres:

~

Head track:

S690 - MAXItrack 150mm x 1.15 BMT slotted deflection head track

Wall track:

690 - 92mm x 32mm x 1.15 BMT

Nogging track:

507 - 150mm x 0.70 BMT ~

Jamb stud:

204 - MAXIjamb Stud 150mm x 1.20 BMT

Sill member:

204 - MAXIjamb Stud 150mm x 1.20 BMT & 691 - 150mm x 1.15 BMT

Head member:

204 - MAXIjamb Stud 150mm x 1.20 BMT & 691 - 150mm x 1.15 BMT

Cleats:

205 - 150mm x 2.9mm base bracket

 

206 - 150mm x 1.5mm sill bracket

 

207 - 150mm x 2.9mm slotted head bracket

Fixings

Wall track to structure ~

 

Head track to structure ~

 

Base bracket to structure ~

 

Slotted head bracket to structure ~

Jamb studs and cleats are required to frame up openings, modify if required to suit project requirements.

Wall stud:

691 150mm x 1.15 BMT

 

204 MAXIjamb Stud 150mm x 1.2 BMT

Nogging track:

Refer to Rondo Professional Design Manual and Rondo Building Services Pty Ltd requirements for nogging track spacing.

Fixings:

Sections designed for 10mm expanding type anchors, nominate fixings/spacing to suit project requirements.

4.5
RONDO TOP HAT SECTIONS

Location:

~

Supplier:

Rondo Building Services Pty Ltd

Top hat section:

~

Orientation:

~

Spacing:

~

Fixing:

~

Top hat section:

H515 - 50mm face, 15mm depth

 

H525 - 50mm face, 25mm depth

 

H535 - 50mm face, 35mm depth

 

H550 - 50mm face, 50mm depth

 

H715 - 70mm face, 15mm depth

 

H725 - 70mm face, 25mm depth

 

H735 - 70mm face, 35mm depth

 

H750 - 70mm face, 50mm depth

Orientation:

horizontal or vertical to suit project requirements

Fixing:

Consult Rondo Building Services Pty Ltd for project specific requirements and approval.  Top hats can be fixed vertically with adjustable cleats or direct fixed horizontally with packers if necessary.  If vertically fixed onto nogging track, the nogging track requires strengthening with Rondo 545 brackets.

Top hat sections over steel stud framing can be used for cladding and composite panel support.

4.6
THERMAL BREAK

Location:

~

Type:

~

Cold bridging can lead to condensation forming on the steel studs.  Thermal breaks are used to reduce cold bridging and are created by fixing insulation to the outside face of the steel framing. Refer to Rondo Building Services Pty Ltd and cladding manufacturer for advice.

4.7
CAVITY BATTEN

Location:

~

Type:

~

Type options:

EPS, ~mm x ~mm

 

XPS, ~mm x ~mm

 

Timber, ~mm x ~mm

 

Cavibat, ~mm x ~mm

Cavity bottom vent to be plastic to comply with thermal break requirements.