Retaining Wall Blocks – NSWRetaining Wall Blocks – NSW

Heron™ Retaining Wall Blocks offer rich, natural colours and design fl exibility.

Sydney Blend and Slatestone colours contain a secondary colour fl ash, similar to the fl ashes in natural sandstone.

Limestone, Sandstone and Charcoal colours are made with a single, consistent colour.

Depending on what suits your overall desire one thing is certain, Heron™ Retaining Wall Blocks have the colour and fi nish to cater for all landscaping projects.

Structurally sound and perfect for the “do it yourself” weekend warrior, the Heron™ Retaining Wall Blocks require no mortar, and are virtually maintenance free.

Sydney Blend

LimestoneSandstone

Heron™ Wall Block Heron™ Capping Block

Specifi cations

Size(mm): 390L x 245W x 198H

Weight (each): Heron™ Wall Block 22kg

Blocks per m2:1m2 wall = 13 blocks

1300 MASONRY (1300 627 667)

Head offi ce738-780 Wallgrove Rd, Horsley Park 2175PO BOX 6550 Wetherill Park NSW 1851Tel: 02 9830 7777Fax: 02 9831 3771Email: info@australmasonry.com.auWeb: www.australmasonry.com.au

NSW & ACT Display Centres

Horsley Park 738 -780 Wallgrove Road Horsley Park NSW 2175

Canberra 7 Lithgow Street Fyshwick ACT 2609

Newcastle 1b George Street Mayfi eld

Punchbowl 62 Belmore Road Punchbowl

AM 3

874

BRO

WN

INK

Tuggerah 19 Bryant Drive Tuggerah

Bowral 1 Kiama Street Bowral

Illawarra 45 Princes Hwy Albion Park Rail

Port Macquarie 42 Jindalee Rd Port Macquarie

The product images in our brochures give a general indication of colour for your preliminary selection. We recommend you also view current product samples before making your fi nal selection. Printed March 2010

Heron™ Corner Block(Right-hand corner unit shown)

Specifi cations

Size(mm): 390L x 245W x 90H

Weight (each):

Heron™ Capping Block 16kg

Blocks per lineal metre: 2.56 blocks

Specifi cations

Size(mm): 160L x 360W x 198H

Weight (each): Heron™ Corner Block 20kg

Available in left or right

Reseller Stamp

Sydney Blend

Charcoal Slatestone

Heron

HOW TO LAY RETAINING WALLSAustral Masonry’s Heron™ Retaining Wall Blocks are an ideal choice for retaining walls in gardens, other residential applications and commercial projects. The interlocking and dry stacked nature of the Heron™ blocks, makes them easy to install for the “Do It Yourself” landscaper, while their connection strength provides confi dence on larger jobs. No matter what the project, the result is always an attractive and low maintenance retaining wall. The fl exibility of the system provides tremendous scope, from edging to terraces, straight walls to curves.

Note: For commercial projects, terraced walls, fences above walls and other specialised applications, engineering and/or council guidelines may need to be followed.

❍ STRING LINE ❍ SHOVEL ❍ PEGS OR STAKES ❍ MITRE SAW (TO CUTS BLOCKS IF REQ’D)

❍ TAPE MEASURE ❍ SPIRIT LEVEL ❍ BROOM ❍ 10-20MM CRUSHED STONE (BACK FILL)

❍ WALLING UNITS ❍ WHEEL BARROW ❍ GLOVES & EYE PROTECTION ❍ CRUSHED ROCK (FOR BASE)

❍ COMPACTION TOOL ❍ AGRICULTURE DRAIN PIPE ❍ GEOGRID

YOUR CHECKLIST

Step 4: First Course

Spread 25mm of metal dust with an additional 5% by mass of cement over the compacted base.

The fi rst course is now bedded into the metal dust. The use of a level and string line is recommended

to ensure the fi rst course is laid correctly. Ensure each block is also well fi lled with free-draining

material (eg. crushed rock aggregate / blue metal).

For walls up to 1 metre high, make sure at least 100mm of the fi rst-course blocks are buried below

the fi nished ground level. Allow approximately 200mm for walls over 1 metre high and 300mm for

walls over 2 metres high. Compact gravel along the front of the blocks to stabilise.

Step 5: Drainage and Back Fill

Place 100mm diameter PVC agricultural pipe with geotextile sock behind the wall, with a 1 in 100 fall.

Backfi ll behind the courses of blocks to a width of approx. 200mm – 300mm using 10-20mm free

draining material (eg. crushed rock aggregate / blue metal). Ensure each block is also well fi lled with

free-draining material.

Backfi ll behind the drainage layer with your chosen backfi ll material in a maximum of 200mm layers.

Compaction rate of 95% must be achieved (use only hand operated plate compactors close to wall).

Do not use soft or wet clay to backfi ll. Be carefull not to mechanically compact too close to the wall.

Step 7: Capping Units

Once backfi lling and cleaning is completed as per Step 5, fi x the purpose made Heron™

Capping Blocks with adhesive.

For domestic situations, a waterproof construction adhesive is recommended.

For high use areas, a 2-part epoxy is preferred.

Step 6: Laying Additional Courses

Clean any debris from the top of the wall to ensure the next block and or the geogrid layer sits perfectly.

Roll the geogrid perpendicular to the wall, pull tight and cut to the required length. Ensure that the geogrid

sits within 15mm of the face of the block, so that the purpose made connection lugs can interlock.

Butt join the geogrid along the length of the wall.

Place the next course on top of the geogrid, fi ll the blocks, pull the geogrid taught and pin down while

compacting the drainage layer and backfi ll.

Fall away

TYPICAL WALL SECTION

100mm diameter “Ag” PVC pipe

(fine crushed rock)Half to one block

buried below ground

Depth of footing

Backfill

Soil or mulch

Retaining Wall Blocks

Capping Block

Max

imum

hei

ght “

H”

Crushed Stone (free draining medium) 200 – 300mm wide

Dish drain to direct surface run off

Step 2: Foundation

The foundation material shall be compacted by several passes of a mechanical plate

vibrator. Where there are signifi cant variations of foundation material or compaction, soft

spots, or where there is ponding of ground water, the material shall be removed, replaced

and compacted in layers not exceeding 150mm. Trenches shall be dewatered and cleaned

prior to construction, such that no softened or loosened material remains.

Step 1: Permits

Check with your local council to ensure all local Building Codes are complied with.

Estimating Materials

Calculate No. of Heron™ blocks required

Length of wall (metres)No. blocks high 2m 4m 6m 8m 10m 12m

1 course 6 11 16 21 26 322 courses 11 22 32 42 52 633 courses 16 32 47 62 78 944 courses 21 42 63 83 104 1255 courses 26 52 78 104 130 1566 courses 31 62 93 124 156 186

Calculating Block Quantities – Example wall

10m long x 3 courses high

Blocks(10 metres x 2.57 blocks per metre) x 3 courses = 77.1 blocks (78 blocks rounded)Add 5% Extra (Breakages, Curve Walls, Cuts) = 82 Heron™ Blocks overall

Capping10 metres x 2.57 capping blocks per metre = 25.7 capping blocks (26 blocks rounded)Add 5% Extra (Breakages, Curve Walls, Cuts) = 28 Heron™ Capping Blocks overall

Step 3: Bearing Pad

The wall shall be built on a bearing pad, not less than 150mm deep, consisting of one of the

following options:

– Compacted crushed rock, well-graded and of low plasticity (without clay content), compacted

by a plate vibrator;

– Cement-stabilized crushed rock, with an additional 5% by mass of cement thoroughly mixed,

moistened and compacted by a plate vibrator; or

– Lean-mix concrete with a compressive strength of not less than 15 MPa.

Warning: Vehicle and machinery traffi c should be allowed no closer than one metre behind the wall.

Cross Section of a fi nished wall

Heron™ Retaining Wall Blocks require no mortar, and are virtually maintenance free.