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stone wall cladding

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7 Finishing

7.1 Services

Ensure service pipes and wires are fixed or checked into the frame and not laid loose in the extended wall cavity. All materials that are susceptible to deterioration due to plasticiser migration must be protected (check with product manufacturer). Some PVC products or electrical cabling that penetrate the coating system and QT EcoSeries Wall Panel, require a conduit to ensure it is protected. Copper pipes require a sleeve, conduit or tape to prevent contact with the wall panel.

Meter Box——————

7.2 Penetrations

Voids or gaps created by service penetrations through the exterior wall require weatherproofing and or waterproofing. A common method is to inject with expandable polyurethane foam and seal with a long lasting exterior gap sealant to make a weather tight seal. Where practical add a flange or decorative feature over the hole or penetration.

Penetrations—————————-

7.3 Sealants

Use an exterior grade weatherproof sealant for exterior wall construction and as a general-purpose gap filling. Apply sealant in accordance to manufacturers recommendations. For a sealant to work effectively, the sealant must be applied as shown in the sketch below, Opening Width (D) x Depth (D/2) half the width. Use backing rod as required. Ensure surfaces are in good condition clean and free from oil, dust, loose materials including old sealant and release agents. Apply masking tape to surfaces where contact with sealant is not required. Tape should be removed before sealant cures. Smooth the surface of the sealant and ensure excess sealant is removed. Refer manufacturers curing or drying times before painting.

Sealant Application—————————–

7.4 Heavy & Frequently Adjusted Fixtures:

Heavy items are not to be fitted directly to the QT EcoSeries Wall Panel. They should have their own stand-alone supports or be tied to the supporting wall frame (eg. Clothes lines). Items subject to frequent handling (e.g. Flood-Lights and sensors) require a mounting plate, to be fixed across at least two or more frame studs to give longterm fixing support. The backing plate must be of a material that will offer, long-term weatherproof durability. If the internal lining is already installed, the mounting plate can be installed externally prior to the installation of the QT EcoSeries Wall Panel.

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5.0 Acoustic

Table 5.1 provides acoustic performance levels for PowerBlock walls. For alternatives and composite wall construction, Table 3.2 are acoustic performance for PowerBlock systems.

Table 5.1:  Acoustic Performance

PowerBlock Thickness Rw Rw+ Ctr
100 38 35
150 42 40
250 45 42

Values for PowerBlock only, no linings.

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8.0 System Components

Products

Hebel stocks many of the products and materials required to construct your Hebel home.

Product Description Product Description
  Hebel Thermoblocks

50mm – 300mm (25mm
increments)

Hebel Adhesive
20 kg bag

Used for gluing
the blocks together
at vertical and
horizontal joints

 

Sill blocks

600x200x50mm
thick or 100mm
thick, 30º slope

 

PowerFloor Panels

1800mm x 600mm x 75mm

Hebel Mortar 20 kg bag

Used as thick bed
mortar base to
provide a level
base for the
first course

  Custom PowerFloor
Panels

150mm – 250mm x 600mm
by up to 6m

Hebel Lintels

To suit openings
up to 5m

Hebel HighBuild
render 20kg bag

Used as a preparation
coat to level surface
providing an even
true surface

 

Stair treads

300mm x 175mm x 1m or 1.2m

Control joint tie

Used at every
third course in
control joints

Hebel Patch
10kg bag

Used to prepare
minor chips or
damage to blocks

 

Sliding joint tie

Fixed to RHS/SHS
column every
second course

 

Corrosion Protection Paint

To coat exposed
reinforcement during cutting

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10.0 Tools & Equipment for Construction

Hebel PowerBlocks can be laid using construction tools/equipment.

String Line – A string line is required to accurately set out and lay Hebel PowerBlock Walls.

Brick/Blocklaying Profiles – used to gauge the block course are being laid level.

Mixing Bucket – a minimum 20 litre bucket is required for mixing Hebel Mortar, Hebel Adhesive and Hebel HighBuild render.

Electric Drill – an electric drill is required to mix the Hebel Mortar, Hebel Adhesive and Hebel HighBuild render. It is also used to drill clearance holes in the blocks so they can be placed over the tied down rods where required.

Stirrer – fitted to the electric drill, the stirrer is used to mix the Hebel Mortar, Hebel Adhesive and Hebel HighBuild render inside the mixing bucket.

Notched Trowel – the notched trowel is used to apply the Hebel Adhesive to the Hebel surfaces. The width of the trowel must match the block thickness to ensure the adhesive is applied with full and even coverage.

Rubber Mallet – a rubber mallet is required to ‘tap’ the Hebel PowerBlocks onto the adhesive and into place.

Spirit Level – required to install the blocks level and plumb.

Hand Saw – a Hebel handsaw can be used to cut Hebel PowerBlocks to length and height.

Powered Bandsaw – a bandsaw is ideal for cutting Hebel PowerBlocks. (perfect when there are many site cuts to be performed).

Hebel Square – a purpose built square is available for use when marking and cutting Hebel PowerBlocks.

Steel, Plastic and Timber Trowels – these trowels may be required for the installation of the Highbuild render and texture coatings.

Sanding Float – used to even out inconsistencies in the Hebel PowerBlock Wall in preparation for render/texture coats.

Hebel Hand Router – may be used to chase services into solid Hebel walls.

Circular Saw – (fitted with a diamond blade) may be used to chase services into solid Hebel walls.

Electric Router – may be used to chase services into solid Hebel walls.

Crane – may be required to lift large Hebel Lintels and Hebel custom floor panels.

Lifting Grabs – required for use in conjunction with crane for lifting Hebel lintels and custom floor panels.

Scaffold – Scaffold is required when building block walls. The amount of scaffold depends on the height of the walls.

Sealant Gun – required to fill the control joints in the Hebel PowerBlock Walls.

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12.0 PowerBlock Handling

Manual Handling

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

  • Use mechanical aids, such as trolleys, forklifts, cranes and levers, or team lifting to move Hebel.
  • 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.
  • Good lifting techniques to be adopted to minimise the risk of injury.

Mechanically Assisted Handling

Moving and handling Hebel Floor Panels and Hebel Lintels should be done using mechanical aids such us forklifts, cranes and special panel lifting trolleys. Different panel lift attachments are available for installing panels. For purchasing or hire of these devices please contact CSR Panel Systems.

Health, Safety & Personal Protective Equipment (PPE)

Hebel AAC 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 AAC products.

Approved respirators (AS/NZS1715 and AS/NZ1716) and eye protection (AS1336) should be worn at all times when cutting and chasing. Refer to the Hebel Material Safety Data Sheets (MSDS).

Cutting

The use of power tools when cutting masonry products may cause dust, which contains respirable crystalline silica, with the potential to cause bronchitis, silicious 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 appropriate hearing protection. Refer to the appropriate Hebel MSDS.

Reinforcement exposed during cutting is to be coated with a liberal application of Hebel corrosion protection paint.

Fig. 12.1 Standard personal protection equipment.

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13.0 Delivery & Storage

PowerBlock Delivery

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

It is good practice to inspect the delivery for damaged blocks. Unnecessary handling will increase the risk of damage to the Hebel PowerBlocks. Care should be taken when cutting the packaging straps, blocks may come away and cause injury or become damaged.

TIP – When a block is damaged it may be possible to cut away the damaged section and use the remaining portion in the wall.

Storage

All materials must be kept dry and preferably stored undercover. Hebel PowerBlocks should be left on their pallet until they are required. Place the pallet on a level and stable surface. The project engineer should be consulted as to the adequacy of the structure to support Hebel PowerBlocks if they are not stored directly on the ground or concrete slab.

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