aluminium cladding

4 Construction Details QT Eco Series

April 15, 2013 by

4.1 Slab & Floor

All foundations must comply with the relevant standards and local authority requirements, with appropriate consideration given to soil type. QT EcoSeries Wall Panel is suitable for construction on concrete slab or suspended floors. The concrete slab can either be rebated or non-rebated. The slab rebate will need to be a minimum of 50mm below floor level and 100mm above paved level or 150mm above ground level (See local standards). To ensure a flush finish, the width of the slab rebate needs to allow for the thickness of the coating system, the thickness of the panel (40mm or 50mm), and the size of the extended wall cavity 20 – 50mm (30mm nom). Minimum ground clearances, must be maintained at all times during the life of the building. Insufficient clearance from the ground to the bottom of the wall panels will affect long-term durability.

4.2 Termites

The Building Code of Australia in conjunction with AS 3660 specifies the requirement for termite risk management. (See local standards). The edge of a slab-on-ground may be used as a visual perimeter barrier. Provided that the slab edge is left exposed not less than 75mm above finished ground or paved level. The face of the perimeter must not be concealed by a flashing, rendered, tiled or clad.

The exposed edge of the slab must be kept clean and free of debris and regularly visually inspected for termite activity. QT EcoSeries Wall Panel does not hold any nutritional value for ants or rodents.

4.3 Windows

Wherever possible windows and associated flashings should be installed prior to the installation of the QT EcoSeries Wall Panel. When ordering the window frame it is essential to plan where the window flange will be positioned either flush with the stud frame, flush with battens or even over the panel.

All materials that are susceptible to deterioration due to plastics migration or alkalinity of cement base products must be protected (check with product manufacturer).

To provide added design flexibility, decorative mouldings or features can be made using QT EcoSeries Wall Panels. The panel can be cut into bands or laminate multiple layers and shape to achieve the desired profile. Once installed, a coating system would then be applied. Alternatively, a wide range of decorative mouldings are available from various manufacturers.

QT EcoSeries Wall Panels can be cut into bands that can be installed around windows, doors, along horizontal control joints, etc to enrich the aesthetics of the project. They are installed so the top and bottom edge (bevelled at 15 degrees) falls away from the wall. Where bands meet, they should be cut at a 45˚ angle, across the face of the corbel to help conceal the join and increase the adhered surface bond. Bands are bonded into place with polyurethane foam and corbel screws or nails to mechanically fix the bands until the foam is set.

4.4 Decorative Mouldings

QT EcoSeries Wall Panels can be cut into bands that can be installed around windows, doors, along horizontal control joints, etc to enrich the aesthetics of the project. They are installed so the top and bottom edge (bevelled at 15 degrees) falls away from the wall. Where bands meet, they should be cut at a 45˚ angle, across the face of the corbel to help conceal the join and increase the adhered surface bond. Bands are bonded into place with polyurethane foam and corbel screws or nails to mechanically fix the bands until the foam is set.

4.5 Doors

Door framing must be fixed in position prior to the installation of the QT EcoSeries Wall Panels. The door framing will allow the panel to be cut and installed neat but independent of the frame. Door frames must be fixed to the structural framing. Decorative mouldings can be used to emphasize the door opening.

All materials that are susceptible to deterioration due to plastics migration or alkalinity of cement base products must be protected (check with product manufacturer).

4.6 Parapets

Parapets are generally used to conceal or to emphasize features of a building. The top of the parapet must be designed and installed to shed water and maintain the weatertighness of the building below.

4.7 Wall to Roof

Wall to roof details can often be unsightly as they are easily seen and hard to conceal without compromising the weathertighness of the dwelling. Because of its visibility, it is essential to create clean straight lines either by using a uPVC moulding or cover flashings.

4.8 Soffit & Eaves

The eaves or roof overhang play a significant role in the comfort performance of the building. Eaves or overhangs are used to shade the walls from the summer sun, while capturing the sun’s heat in the winter. Eaves will reduce glancing light, which highlights the wall surface. Glancing light is the light that is nearly parallel to the surface of the wall and casts visible shadows and uneven projections of the surface finish QT EcoSeries Wall Panels can be installed to suit various soffit designs and details.

Silhouette BGC FIBRE CEMENT

April 12, 2013 by

Silhouette opens a whole new world of possibilities for creating a building’s personality. SilhouetteT allows architects, developers and builders to select from a range of feature details or even to create their own custom design for external claddings.

Attractive and competitively priced, Silhouette offers a fresh approach to cladding options.

Silhouette comprises of a fibre cement plank and a uPVC feature strip. Together these components clip together to obscure fixing points and to form a seamless cladding appearance of your choice.

The Silhouette exterior cladding system:

choice of 3 individual profiles – urban, coastal and classic
custom design profiles
unique and stylish
simple and quick to install – just clip in profile
economical – no waste in laps
lightweight material

THICKNESS (mm)	WIDTH (mm & PATTERN)	LENGTH (mm)
7.5	230 Smooth	4200
7.5	180 Smooth	4200

*some sizes may not be available in all states, please check with your local BGC office for availability.

4.0 System Installation PowerFloor

April 5, 2013 by

4.1 Delivery & Storage

Unloading Bundles

Panels shall be unloaded and moved with only approved lifting devices. Before use, the lifting device should be checked for the required lifting tags. Panels should be unloaded as close as possible to the intended installation area. This will increase work efficiency and minimise the need for secondary lifting.

Note: Secondary handling increases the risk of panel damage. The repair of damage sustained during lifting and moving is the responsibility of the lifter. Where damage is excessive, panels must be replaced.

Storage

All materials must be kept dry and preferably stored under cover. Care should be taken to avoid sagging or damage to ends, edges and surfaces.

All Hebel products must be stacked on edge and properly supported off the ground, on a level platform. Panel bundles can be stacked two high. The project engineer should be consulted as to the adequacy of the structure to support the stacked bundles. Each bundle contains 10 Hebel PowerFloor panels. Where bundles are stacked two high, the supporting cleats must be vertically aligned, to ensure minimal bending of the lower panels. Refer to Fig 3.

If Hebel PowerFloor panels are stored outside, they must be stored off the ground and protected from the weather

Only single bundles positioned on the ground can be opened. To provide a level surface, we recommend placing temporary joists beneath the supporting cleats.

Fig 4.1.1. Stacking Bundles of Hebel PowerFloor

*Unstraping Bundles

Ensure appropriate bracing is installed to bundles prior to removal of strapping to prevent panels from falling. Panels can be held together with sash clamps, ratchet straps or Hebel stabilising bars.

4.2 Panel Handling

Manual Handling

To minimise the possibility of manual handling injuries, CSR Hebel suggests the following:

Use mechanical aids, such as trolleys, fork lifts, cranes and levers, or team lifting to move panels.
Keep the work place clean to reduce the risk of slips, trips and falls which can cause injury.
Plan the sequence of installation to minimise panel movements and avoid awkward lifts.
Keep the panels dry.
Train employees in good lifting techniques to minimise the risk of injury.

Hebel products are cement-based, which may irritate the skin, resulting in itching and occasionally a red rash. The wearing of gloves and suitable clothing to reduce abrasion and irritation of the skin is recommended when handling Hebel products.

4.3 Tools and Equipment

The basic tools required to assist in the installation of the Hebel PowerFloor are shown in Figure 4.1. These may be purchased through CSR Hebel and include:

Mixing bucket
Stirrer
Trowel
Sanding float
Panel lifters
Levelling plane

Extra equipment will also be required and includes the following:

Power drill (clutch driven)
Power saw with metal or diamond tipped cutting blades
Dust extraction system
Sockets and bits for screws
Personal Protective Equipment (PPE) such as goggles, face mask and P1/P2 dust masks, used when site cutting the panels

Fig 4.1.1. The Basic Tools and Equipment Requirements

4.4 Panel Installation

Installation Procedures

CSR Hebel promotes and advocates a safety conscious work place at all times. To assist builders and contractors to maintain their safety standards, CSR Hebel has produced guidelines for the installation and handling of their products. Contact CSR Hebel for additional information.

Mortars & Adhesives

The Hebel bagged mortar and adhesive should be prepared in accordance with instructions on the packaging.

Damaged Panels

Chipped or damaged panels are to be repaired using Hebel Patching Mortar. Your Hebel supplier should be notified immediately of any panel damage or cracking that occurs during the handling of the panels. This damage may result in the panel being structurally inadequate, in which case it must be replaced.

Panel Cutting

Hebel PowerFloor Panels to be cut with a circular saw fitted with a diamond tipped blade. The use of power tools may cause dust, which contains respirable crystalline silica, with the potential to cause bronchitis, silicosis and lung cancer after repeated and prolonged exposure. When using power or hand tools on Hebel products, wear a P1 or P2 respirator and eye protection. When cutting, routing or chasing Hebel products with power tools, use dust extraction equipment and wear hearing protection. Refer to CSR Hebel MSDS sheets.

Reinforcement exposed during cutting is to be coated with a liberal application of Fentak.

4.5 Hebel PowerFloor Installation Sequence

1. Preparation of Framing for Hebel PowerFloor Panel Installation

Check floor framing is complete and within level tolerances.
Provide set-out chalk lines, as required.
Provide temporary installation platform where necessary.
Ensure floor framing has adequate strength to support Hebel PowerFloor bundles.
Position Hebel PowerFloor bundles on the floor framing.

2. Hebel PowerFloor Panel Installation

Panels are to be installed in a stretcher bond pattern, with a minimum overlap of 1 joist space and not less than 450mm.
Use lifting handles or trolley to move the panels to installation area.
Apply a 5mm min. bead of Fuller Max Bond construction adhesive (or equivalent) to top of joists in accordance with manufacturer’s instructions, and apply Hebel Adhesive to appropriate panel edges.
Panels must be installed with minimal horizontal sliding on the joists to ensure a good bond. Force the tongue and groove joint closed as the panel is rolled and lowered onto the joists. Ensure all joints are tight and that adhesive makes full contact along all joints.
Screw fix panel to the joists as required.
Repeat process, removing excess Hebel Adhesive.

3. Penetration Detailing

Install blocking to support Hebel PowerFloor panel at major openings.

4. Floor Finishes

Sweep the floor surface to remove debris and loose particles.
Fill joints and screw holes with Hebel Adhesive, as required.
Ensure perimeter is not chipped.
Install floor covering for Hebel PowerFloor system in accordance with manufacturer’s specifications.

Note: Ensure panel moisture content is within limits outlined by the floor covering manufacturer.

4.0 Regulatory Issues PartyWall

March 28, 2013 by

Dwellings Constructed Side-By-Side on a Single Allotment.

Where it is proposed to construct single dwellings side-by-side on a single allotment the internal wall between dwellings is a fire separating wall as defined in the BCA. The fire separating wall must start from the ground level (top of concrete footings or top of floor slab) and achieve a 60/60/60 FRL if load bearing, or –/60/60 FRL if nonload bearing. The wall must go to the underside of a non-combustible roof covering and any gaps be filled with fire resisting material as described in Detail 3.7.1.11 of Volume Two of the BCA.

Dwellings Constructed Side-By-Side on Separate Allotments

Where it is proposed to construct single dwellings side-by-side on separate allotments, or if subsequent subdivision is proposed, the wall might also be considered an external wall and each dwelling may be required to have its own wall starting from the ground level (top of concrete footings or top of floor slab) and each achieving a 60/60/60 FRL if load bearing, or –/60/60 FRL if non-load bearing. Contact your local authorities, as there may also be applicable legislation or discretionary powers available to vary these provisions.

Dwellings Constructed Side-By-Side on a Single Allotment Where Subdivision May Subsequently Occur.

Where it is proposed to construct single dwellings side by side on a single allotment and it is known that subsequent subdivision will occur, or that subdivision might occur (and this will probably apply to most multi-dwelling developments) then, after subdivision, the internal fire separation wall might also be considered an external wall and each dwelling may be required to have its own wall starting from the ground level (top of concrete footings or top of floor slab) and achieving a 60/60/60 FRL if load bearing, or –/60/60 FRL if non-load bearing. Contact your local authorities, as there may also be applicable legislation or discretionary powers available to vary these provisions.

Hebel PartyWall Solutions in tiered applications

Where the internal fire separation wall extends beyond the roof line on one side only and becomes an external wall, contact CSR Hebel Engineering Services for advice on PowerWall external wall solutions.

Compliance with the Building Code of Australia (BCA)

All building solutions, such as walls, floors, ceilings, etc. must comply with the regulations outlined in the Building Code of Australia (BCA) or other authority.

The BCA is a performance based document, and is available in two volumes which align with two groups of ’Class of Building’: Volume 1 – Class 2 to Class 9 Buildings; and Volume 2 – Class 1 & Class 10 Buildings – Housing Provisions. Each volume presents regulatory Performance Requirements for different Building Solutions for various classes of buildings and performance provisions.

These Performance Provisions include:

Structure
Fire Resistance
Damp & Weatherproofing
Sound Transmission & Insulation
Energy Efficiency

This design guide presents tables and information necessary to design a Hebel PartyWall installation that complies with the Performance Requirements of the BCA. The designer must check the adequacy of the building solution for Performance Requirements outlined by the appropriate authority.

Detail 4.1: Typical Applications.

Appendix B PartyWall

March 27, 2013 by

B1 Architectural Specification

This specification should be adopted as a guide only, and shall be superseded by the contract specifications of the project.

* Insert or select appropriate specifications.

Scope

The contractor shall furnish all material and equipment required to satisfactorily complete the installation and jointing of the specified Hebel PartyWall system where indicated in the contract specification and/or on the layout drawings.

Materials

All AAC material shall be Hebel PowerPanel as manufactured by CSR Hebel. All accompanying fixings shall be as per the current Hebel Low Rise Multi-Residential Party Walls Design & Installation Guide, NºHBLA228 LRPW and/or the appropriate project consultant’s specifications. All lining materials shall be Gyprock plasterboard or Cemintel Fibre Cement sheet as manufactured and supplied by CSR Building Products (or products of equivalent or better performance). Plasterboard shall be manufactured to meet the dimensional requirements of AS/NZS2588 ‘Gypsum Plasterboard’. Steel frame components shall be those manufactured by Rondo Building Services Pty Ltd (or products of equivalent or better performance). All infill material shall be CSR Bradford infill as manufactured and/or supplied by CSR Bradford (or products of equivalent or better performance).

Wall System

The contractor shall supply and install *75mm Hebel Intertenancy 001, Option ……… or *75mm Hebel Intertenancy 002, Option ……… in accordance with the current Hebel PartyWall Design & Installation Guide, NºHBLA228 LRPW, and shall satisfy the following performance criteria. The wall shall have a Fire Resistance Level *FRL ……/……/…… in accordance with the requirements of AS1530.4. Installation shall be carried out to the level specified for a field acoustic performance of *D_ntw/R‘_w …………… using cavity infill of *Bradford………………… (or products of equivalent or better performance).

Lining Boards

The stud frame on each side or the PartyWall shall be lined with one layer of *…………mm Gyprock *……………… plasterboard, or one layer of *…………mm Cemintel *……………… fibre cement sheet. All layers shall be fixed and caulked as specified for the relevant system in the Gyprock Plasterboard Installation Manual, NºGYP547, other relevant CSR technical literature, and Rondo Building Services literature or appropriate steel frame manufacturer’s literature.

Plasterboard Levels of Finish

All framing, plasterboard lining, jointing and finishing shall be carried out to *Level ………Level of Finish, in accordance with Gyprock Plasterboard Installation Manual, NºGYP547 and/or AS/NZS2589.1 ‘Gypsum Linings in Residential and Light Commercial Construction – Application and Finishing’.

Caulking

Provide a * one or two sealant system in accordance with the sealant manufacturer’s requirements. The sealant system shall meet or exceed the fire resistance level (FRL) rating of the Hebel PartyWall system in which it is used. In fire rated systems where caulking is indicated, use *……………… fire rated polyurethane sealant with non fire-rated backing rod, installed in accordance with the manufacturer’s recommendations or use *……………… acoustic rated polyurethane sealant with fire-rated backing rod installed in accordance with the manufacturer’s recommendations. In non fire-rated or fire-rated wet areas where caulking is indicated, use fire rated *……………… polyurethane sealant installed in accordance with the manufacturer’s recommendations.

Important

Any variation or substitution of materials or assembly requirements, or compromise in assembly may result in failure under critical conditions.