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moisture-density

RETAINING WALLS

Table of Contents

    SPECIFICATION RETAINING WALLS EARTHWORKS AND DRAINAGE ........................................................ 4 Sub-surface Drainage .................................................................................................................................................. 7 Drainage Void ............................................................................................................................................................ 7 Geocomposites ........................................................................................................................................................... 8 Geotextiles for Filters and Drains ................................................................................................................................ 9 Protection Boards ..................................................................................................................................................... 10 Drainage Fill ............................................................................................................................................................ 10 Waterproofing .......................................................................................................................................................... 10 SPECIFICATION - REINFORCED SOIL STRUCTURES AND SEGMENTAL GRAVITY RETAINING WALLS .... 11 Concrete Retaining Wall Blocks ............................................................................................................................... 13 Concrete Crib Blocks ................................................................................................................................................ 13 Concrete Revetment Blocks ...................................................................................................................................... 14 Permeable Blocks For Segmented Gravity Retaining Walls ....................................................................................... 14 No-fines Concrete Infill ............................................................................................................................................ 14 Soil Infill .................................................................................................................................................................. 15 Geogrids ................................................................................................................................................................... 15 Adhesive .................................................................................................................................................................. 16 Surface Sealing Material ........................................................................................................................................... 16 Bulk Fill Material ..................................................................................................................................................... 16 SPECIFICATION - REINFORCED MASONRY RETAINING WALLS ...................................................................... 18 Concrete ................................................................................................................................................................... 22 Reinforcement .......................................................................................................................................................... 22 Bar Chairs ................................................................................................................................................................ 22 Key Joint Form ......................................................................................................................................................... 23 Curing Compounds ................................................................................................................................................... 23 Joint Material ........................................................................................................................................................... 23 Expansion Joints for Continuous Pours ..................................................................................................................... 24 Concrete Jointing Accessories ................................................................................................................................... 24 Concrete Blocks for Reinforced Masonry Applications.............................................................................................. 25 Concrete Blocks for Reinforced Mortarless Masonry Applications ............................................................................ 25 Cement ..................................................................................................................................................................... 26 Lime......................................................................................................................................................................... 26 Water Thickener ....................................................................................................................................................... 27 Sand ......................................................................................................................................................................... 27 Joint Material ........................................................................................................................................................... 27 Concrete Grout ......................................................................................................................................................... 28 Surface Sealing Material ........................................................................................................................................... 28 Bulk Fill Material ..................................................................................................................................................... 28 SPECIFICATION - TIMBER CANTILEVER & CRIB RETAINING WALLS ............................................................. 31 Timber ..................................................................................................................................................................... 32 Concrete ................................................................................................................................................................... 32 Surface Sealing Material ........................................................................................................................................... 32 Bulk Fill Material ..................................................................................................................................................... 33 SPECIFICATION ANCHORS AND SOIL NAILING ............................................................................................... 35 Ground Anchors ....................................................................................................................................................... 36 POTENTIAL PROBLEMS AND SOLUTIONS ........................................................................................................... 40

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    RETAINING WALLS

    Related Product Links (S) = Specification provided further down in this document

Concrete Blocks for Reinforced Masonry Applications Concrete Blocks for Reinforced Mortarless Masonry

    C&M Brick (S) Applications

    C&M Brick (S)

    Key Joint Form Recycled Plastic Sleepers

    Connolly Key Joint Pty Ltd (S) Cosset Industries (S)

    Drainage voids and Geocomposites Concrete Retaining Wall Blocks

    Elmich Australia (S) Hanson Building Products (S) Concrete Blocks for Reinforced Masonry Applications Concrete Blocks for Reinforced Mortarless Masonry

    Hanson Building Products (S) Applications

    Hanson Building Products (S)

Copyright & Licence

    ? Quasar Management Services Pty Ltd. All rights are reserved. Permission is given for Architects, Engineers and Builders

    to use this material in the preparation of single application designs, specification and contracts only. Use of this material for any other commercial purpose is prohibited without the written permission of the publisher. Please Contact us for extended licence.

Use of the Specification and Drawings

    This sample specification and the associated drawings are prepared in electronic format, with the express intention that

    designers will edit them to suit the particular requirements of specific construction projects. The design, construction and

    costing of structures must be carried out by qualified and experienced architects, engineers and builders. The authors,

    publishers and distributors of this specification and the associated drawings do not accept any responsibility for incorrect,

    inappropriate or incomplete use of this information.

This sample specification and the associated drawings are prepared in the context of the national Building Regulations.

    Architects, engineers and builders should make themselves aware of any recent changes to these documents, to any

    Standards referred to therein or to local variations or requirements. The authors, publishers and distributors of this

    specification and the associated drawings do not accept any responsibility for failure to do so.

This sample specification and the associated drawings include product information provided by particular suppliers.

    Architects, engineers and builders should satisfy themselves that information on specific products is correct, by contacting

    the particular suppliers. The authors, publishers and distributors of this specification and the associated drawings do not

    accept any responsibility for incorrect information provided by product suppliers.

Basis of the Specification and Drawings

    In the preparation of these specifications and drawings, the following convention has been adopted.

    ? All building design and construction must comply with the relevant Building Regulations and any relevant

    Standards referred to therein.

    ? If the construction is not covered by the Building Regulations, then it shall comply with any appropriate Standard.

    ? If the construction is not covered by either Building Regulations or Standards, construction should comply with a

    balanced combination of current practice, engineering principles and supplier’s information.

Using this Specification

    To prepare a working specification for a particular contract, delete this front page and edit the following pages in

    accordance with the convention below. “Copy and paste” this draft specification into the Project Specification for the

    particular project, and edit accordingly.

The most common generic specifications are show towards the beginning of this document, with more specialised

    specifications towards the end. Use the “cut and paste” and/or “delete” options to move or remove particular blocks of text.

    Background

    White General specification

    Light yellow Materials specification

    Light green Specification for enhanced in-service sustainability over common construction

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    Text Highlighting

    Nil Generic specification that may not need to be edited Yellow Specification that should be edited (or deleted) Grey Useful information that may be deleted

General Sustainability Requirements

    When a product or system is claimed to be “Sustainable”, the Supplier shall make available a Sustainability

    Statement that clearly indicates how its use will lead to one or more of the following:

    ? Reduction green-house gas generation, which causes global warming; or

    ? Reduction in the use of non-renewable resources upon which our society depends; or

    ? Reduction in land, water or air pollution or degradation, which alienate the use of these resources.

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    SPECIFICATION RETAINING WALLS EARTHWORKS AND DRAINAGE

Scope

    This section covers general considerations, earthworks and drainage for construction of earth retaining walls. It should be

    read in conjunction with the detailed specification for the particular type of retaining wall superstructure.

Building Regulations and Standards

    All materials and construction shall comply with the most recent version of:

    ? the relevant parts of the Building Regulations;

    ? the Standards referred to therein;

    ? other Standards nominated in this specification; and

    ? other relevant Regulations.

    Relevant Standards

    ..AS 4678 Earth retaining structures

    ..AS 2758.1 Aggregates and rock for engineering purposes - Concrete aggregates

    ..AS 2001.2.3 Methods of test for textiles - Determination of breaking force and extension of textile fabrics

    ..AS 3706.2 Geotextiles method of test - Determination of tensile properties Wide strip method

    ..AS 3706.3 Geotextiles method of test - Determination of tearing strength - Trapezoidal method

    ..AS 3706.4 Geotextiles method of test - Determination of burst strength - California bearing ratio plunger method

    ..AS 3706.7 Geotextiles method of test - Determination of pore size distribution - Dry sieving method

    ..AS 3706.9 Geotextiles method of test - Determination of transmissivity

    ..AS 3798 Guidelines on earthworks for commercial and residential developments

Commencement

    Work shall commence as soon as practical after, but not before,

    (a) The Builder has issued:

    ? a written order

    ? the relevant contract drawings, specifications and schedule of work

    ? written approval of any details provided by the Contractor

     (b) All adjacent earthworks are complete, profiles and benchmarks are established.

Definitions

    The following definitions are used in this specification.

    ? Dry Density - The calculated density of soil, if there were no water in the voids.

    ? Moisture Content - The mass of the water in the voids divided by the mass of the dry soil, expressed as a

    percentage.

    ? Saturation Line (0 % Voids) - The line representing the dry density at various moisture contents, if no air is present.

    ? Optimum Moisture Content (OMC) - The moisture content at which the soil can achieve its maximum dry density

    during the test.

    ? Standard Compaction - The dry density a soil would adopt if compacted in three layers in a steel mould of volume 394,440 mm (102 mm diameter x 117 mm high cylinder) at various moisture contents by 25 blows of a 2.5 kg

    hammer dropped 305 mm.

    ? Modified Compaction - The dry density a soil would adopt if compacted in three layers in a steel mould of volume

    94,440 mm3 (102 mm diameter x 117 mm high cylinder) at various moisture contents by 25 blows of a 4.5 kg

    hammer dropped 457 mm.

    ? Cohesionless soil Poorly graded sand and gravel mixtures, with less than 5% finer than 75 microns, and without a

    well-defined moisture-density relationship.

    ? Cohesive soil Soils with a well defined moisture-density relationship, including silts, clays and the like.

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    Safety and Protection of Existing Structures

    All excavations shall be carried out in a safe manner in accordance with the relevant regulations, to prevent collapse that

    may endanger life or property. Before major excavation and shoring is undertaken, a survey of cracks in adjacent building

    shall be undertaken and recorded.

In the absence of regulations to the contrary, the following may be applied where

    ? Excavation is performed and remains open only in dry weather,

    ? There is no significant ground water seepage,

    ? The excavation remains open for no longer than two weeks,

    ? The back slope of the natural ground does not exceed 1 vertical in 6 horizontal,

    ? Bedding planes do not slope towards the cut, and

    ? There are no structures founded within a zone of influence defined by a line from the toe of the cut at 30 degrees

    for cohesionless material and 45 degrees for other material.

    Natural material Maximum height Maximum permissible unpropped

    of cut, m batter, Vert : Horiz Stable rock, sandstone, firm shale etc where bedding 0 to 3.2 m 1 : 0.4 planes do not slope towards the excavation Over 3.2 m Seek advice of Engineer

    Materials with both significant cohesion and friction in 0 to 2.6 m 1 : 0.8 its undisturbed natural compacted state Over 2.6 m Seek advice of Engineer

    Cohesive soils, 0 to 2.0 m 1 : 1.2 e.g. clay, silts Over 2.0 m Seek advice of Engineer

    Cohesionless soils, e.g. Loose gravel, sand 0 to 1.4 m 1 : 1.6

    Over 1.4 m Seek advice Engineer In all other cases, the advice of the Engineer shall be sought.

    Adjacent structures must be founded either beyond or below the zone of influence. Where there is risk of global slip around

    a slip plane encompassing the proposed retaining wall or other structures, or where there is risk of inundation by ground

    water or surface water, retaining wall construction shall not proceed until remedial action has been carried out.

Temporary Shoring of Excavations

    All temporary shoring shall comply with drawings and specifications produced by a suitably qualified and experienced Civil

    Engineer based on geotechnical advice. Consideration shall be given to the settlement effects from the removal of ground

    water by de-watering the site.

Foundation and Bearing Pad

    A qualified and experienced Geotechnical or Civil Engineer shall determine the capacity of the foundation material to resist

    global slip and to simultaneously support the horizontal and vertical loads, noted in the design schedule annexed to this

    specification. This shall be assessed when the excavation has revealed the nature and extent of the foundation material.

Unless varied by the Geotechnical or Civil Engineer, the foundation material shall have the properties set out in the design

    schedule annexed to this specification.

If the existing foundation material does not have these properties or has insufficient friction angle and cohesion to provide

    the requisite sliding and bearing capacity, it shall be removed and be replaced with an enlarged bearing pad with the

    following properties.

Lean-mix concrete

    Mass concrete with a compressive strength f’ of not less than 15 MPa; or c

    Cement-Stabilized Crushed Rock

    Crushed rock conforming with the specification below with an additional 5% by mass of GP Portland cement thoroughly

    mixed, moistened and compacted; or

    Compacted Crushed Rock 3? Compacted density such that a conservative estimate of the mean is at least 2000 kg/m o? Effective internal friction angle such that a conservative estimate of the mean is at least 35

    ? Effective cohesion such that a conservative estimate of the mean is at least 3 kPa.

A well-graded low plasticity crushed rock complying with the following specification is deemed satisfactory for this

    application.

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    Nominal Size 20 mm

    AS Sieve % Passing

    26.5 mm 100

    19.0 mm 95 -100

    13.2 mm 78 - 92

    9.5 mm 68 - 83

    4.75 mm 44 - 64

    2.36 mm 29 - 47

    425 ?m 12 - 20

    75 ?m 2 6

    Liquid Limit not exceeding 20.

    Plasticity Index not exceeding 6.

Compaction shall be by mechanical plate vibrator to a minimum of 100% Standard Compaction. Where there are significant

    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 150 mm at a moisture content within 2% of Optimum Moisture

    Content (OMC) to achieve 100% Standard Compaction.

Trenches and footing excavations shall be dewatered and cleaned prior to placement of drainage material or footings such

    that no softened or loosened material remains. Place and compact the material in layers not exceeding 150 mm, to make up

    the levels. The levels beneath the wall shall not be made up with bedding sand or other poorly graded granular material that

    may permit ground water to permeate under the base of the retaining wall, except where drainage material is specified and

    an adequate drainage system is designed.

Retained Soil

    The retained material shall have the properties set out in the annexure to this specification. If the existing retained material, o (1 : 1 batter) from a point 300 mm behind proposed heel of the structure, does not have these within an envelope at 45properties or has insufficient friction angle and cohesion to remain stable at the design batter, it shall be removed and

    replaced with a material that is stable. Material with the following properties is deemed to be satisfactory: 3? Compacted density such that a conservative estimate of the mean is at least 1900 kg/m o? Effective internal friction angle such that a conservative estimate of the mean is at least 32

    ? Effective cohesion such that a conservative estimate of the mean is at least 3 kPa. These properties may be achieved by modification of suitable site materials (as advised by a suitably qualified Geotechnical

    Engineer) provided the properties are not injurious to any of the other materials in the structure.

    Drainage System The drainage system shall consist of:

    ? A permeable wall facing system.

    ? A permeable drainage layer not less than 300 mm wide adjacent to the stem of the wall.

    ? A 100 mm slotted PVC agricultural pipe, or equivalent system, draining to the storm water system

    ? For applications with high water table, 200 mm wide geocomposite strips at 2.0 m centres at the existing 1 : 1

    batter, connected to the agricultural pipe drainage system.

Constructing Drainage Fill

    Drainage fill shall be:

    ? Placed and compacted, by mechanical plate vibrator, to a minimum of 95% Standard Compaction

    ? Above and beside the drainage pipe with a minimum cover of 150 mm

    ? Behind the wall to a minimum width of 300 mm to within 300 mm of the top

    ? Protected by a geotextile envelope that completely isolates the drainage fill from the retained fill

    ? Adequately drained away from the retaining structures by the drainage system.

Constructing the Drainage System

    The drainage pipe shall be positioned in the drainage fill at a minimum uniform grade of 1 in 100 over a length not

    exceeding 15 metres. It shall be connected to the storm-water system at the lower end of each run and shall drain positively

    away from base of the retaining wall. The drainage pipe shall be brought to the surface at the upper end of each run to

    facilitate future flushing, capped and its positioned marked.

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Sub-surface Drainage

    Sub-surface drainage shall comply with the Drawings, Building Regulations and relevant Standard. Unless stated

    otherwise, sub-surface drainage shall consist of one of the following:

    ? Slotted PVC agricultural pipe, of diameter nominated on the drawings and not less than 100 mm; or

    ? Polypropylene drainage cell, of diameter nominated on the drawings and not less than 30 mm. Depending on the volume of groundwater expected, assessed by the Engineer at the time of construction, a geotextile sock

    may be required. If required, geotextiles shall comply with the specification “Geotextiles for Filters and Drains”. More details…click here

    Sustainability Specification

    Sub-surface Drainage shall:

    ? effectively reduce soil erosion; and/or

    ? effectively trap and treat contaminants rather than allowing them to run off or be dumped.

Suitable products are:

    Specified requirements Complying product reference Contact for further details Sub-soil drainage pipe FilterPipe For further information on the

     suppliers of these products contact

    Electronic Blueprint

    p: +61 2 4360 2255

    e:

    sales@electronicblueprint.com.au

    w: www.electronicblueprint.com.au Slotted PVC agricultural pipe Megaflow For further information on the

    with geotextile sock suppliers of these products contact

    Electronic Blueprint

    p: +61 2 4360 2255

    e:

    sales@electronicblueprint.com.au

    w: www.electronicblueprint.com.au

Drainage Void

    Drainage void systems for permanent voids between the concrete slabs or pavements and the soil profile shall comply with

    the Drawings, Building Regulations and relevant Standard. Unless stated otherwise, drainage void shall consist of rigid plastic drainage cell in conjunction with a geotextile, such that:

    ? It does not clog

    ? Provides a continuous minimum void of 25mm

    ? Will not collapse or distort under design loads nominated by the designer, and not less than the values shown

    below.

    ? Geotextile shall comply with the specification “Geotextiles for Filters and Drains”.

    Strength Requirements for Drainage Void

    Application Minimum design Minimum Note 1 pressure compressive strength

    kPa kPa Under a concrete slab or other similar rigid covering, subject to 125 400 pedestrian loading only

    Under a pavement subject to light vehicular traffic (up to 3 tonne vehicle) 250 750 Under a pavement subject to vehicular traffic up to the legal limit 500 1,500 Notes

    ? Uniform pressure is to be applied over an area not less than 200 mm x 200 mm.

    More details…click here

    Sustainability Specification

    Drainage Void shall:

    ? effectively reduce soil erosion; and/or

    ? effectively trap and treat contaminants rather than allowing them to run off or be dumped.

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    Suitable products are:

    Specified requirements Complying product reference Contact for further details Drainage void system VersiCell Elmich Australia

    VersiDrain 8 p: (02) 9648 2073

    VersiDrain 8 Mesh australia@elmich.com

    VersiDrain 6P www.elmich.com.au

    VersiDrain 8 Geo

    VersiDrain 10 Geo More details...click here

    Specification

Geocomposites

    Geocomposites shall comply with the Drawings, Building Regulations and relevant Standard (..AS 3706). Unless stated otherwise, geocomposites shall exhibit:

    ? Sufficient permeability to maximise the amount of water passing through the outer surface

    ? Sufficient void size, under load, to convey the required water flow to the stormwater system.

    ? Pore size small enough to block fine material from entering the drainage system, without compromising the

    permeability requirements

    ? Strength, toughness and abrasion resistance to resist damage during construction and service Geocomposites shall comply with the specification “Geotextiles for Filters and Drains”. More details…click here

    Sustainability Specification

    Geocomposites shall:

    ? effectively reduce soil erosion; and/or

    ? effectively trap and treat contaminants rather than allowing them to run off or be dumped.

Suitable products are:

    Specified requirements Complying product reference Contact for further details Sub-soil drainage for vertical Drainage Sheeting For further information on the applications suppliers of these products contact

    Electronic Blueprint

    p: +61 2 4360 2255

    e:

    sales@electronicblueprint.com.au

    w: www.electronicblueprint.com.au Drainage void system VersiCell Elmich Australia

    VersiDrain 8 p: (02) 9648 2073

    VersiDrain 8 Mesh australia@elmich.com

    VersiDrain 6P www.elmich.com.au

    VersiDrain 8 Geo

    VersiDrain 10 Geo More details...click here

    Specification

Notes:

    Permeability, Permittivity and Flow

    The permeability test measures the water flow through a sample of the subject geotextile under constant head

    ? Thickness of the sample t

    ? Head during test h = 100 mm

    ? Flow rate under 100 mm of head Q100

    ? Permittivity ψ = Q / h 100

    ? Permeability k = ψ t

    Flow may be unidirectional (only perpendicular to the geotextile) or may be multidirectional. This specification deals only with unidirectional flow and does not deal with problem soils. Several authors (Calhoun, Ogink, McKeand, Giroud, Schober

    and Teinol) provide recommendations for specifying the permeability, k, of a filter, ranging from 0.1 to 10 times the

    permeability of the soil. This will depend in part, on whether the soil is particularly coarse or particularly fine. In this

    specification, a value permeability, k, of the geotextile not less than 1 times the permeability of the soil has been adopted. In the case of important structures, or those where the permeability of the geotextile is critical, more precise methods and

    different specifications should be employed. This specification is not suitable for fine clay, and may not match the flow of

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    water through coarse sands and gravels. The designer must consider variations to this specification in these circumstances.

Opening Size

    Several authors provide recommendations for determining the maximum opening size of a filter. To prevent piping of the geotextile filter should be not more 95(drawing of fine soil particles into the filter), Calhoun recommends that the Othan the D of coarse soils and not more than 200 μm of cohesive soils. The general limits adopted in this specification are 15as follows:

    ? For cohesive soil (D soil ? 75 μm), O geotextile should be between 150 μm and 250 μm. 2095

    ? For non-cohesive soil (D soil > 75 μm), O geotextile should be between 80 μm and 250 μm. 2095To minimize clogging of a geotextile filter, the O opening size should be not less than 3 times the D15 of the soil. 95An alternative specification to minimize clogging is to require the Austroads G Rating (if available) to be less than 3.

Design software available www.electronicblueprint.com.au/software.html

Geotextiles for Filters and Drains

    Geotextiles for filters and drains shall comply with the Drawings, Building Regulations and relevant Standard (..AS 3706). Unless stated otherwise, geotextiles for filters and drains shall exhibit:

    ? Sufficient permeability to maximise the amount of water passing through the outer surface

    ? Sufficient void size, under load, to convey the required water flow to the stormwater system.

    ? Pore size small enough to block fine material from entering the drainage system, without compromising the

    permeability requirements

    ? Strength, toughness and abrasion resistance to resist damage during construction and service Geocomposites shall comply with the specification “Geotextiles for Filters and Drains”. Function Filter and drainage Typical location Drain soil behind retaining walls and structures Protection to geotextile The geotextile shall be protected against tear or Note 2 puncture. Note 1 Soil Type Cohesive and other fine Cohesionless soils such

    grained soils such as as some sands Note 3 silts and some clays Note 3

    Where required by the Engineer...Minimum Wide Strip Tensile 7.5 kN/m 7.5 kN/m Note 2 Strength shall be as high as practical, but not less than …..

    Minimum Trapezoidal Tear Strength shall be as high as practical, but 210 N 210 N Note 2 not less than .. ..

    Where required by the Engineer...Minimum CBR Burst Strength 1,500 N 1,500 N Note 2 shall be as high as practical, but not less than ……..

    Pore Size Oby dry sieving, shall be in the range …….. 150 ?m to 250 ?m 80 ?m to 250 ?m 95 -1 -1 Permittivity, shall be as high as practical, but not less than …… 2.0 sec 0.7 sec 22Flow Rate under 100 mm Head shall be as high as practical, but not 100 l/m/sec 70 l/m/sec less than ……

    Coefficient of Permeability shall be as high as practical, but not less 0.00001 m/sec 0.003 m/sec Note 3 -5-4than ……. (1 x 10 m/sec) (3 x 10 m/sec) Notes

    1. This specification does not apply to “problem soils”, defined as exhibiting one or more of the following:

    ? Silty soils with hydraulic gradients greater than 3

    ? Widely graded or gap graded particle size distribution

    ? Dispersive clays and silts

    ? Uniform silts and sands with a coefficient of uniformity under 3

2. The geotextile shall be protected against tear or puncture by either :

    ? Avoiding fill with sharp angular aggregate, heavy compaction (over 95% standard) and fill depths over 3.0 m, or

    ? Providing a protective layer of drainage aggregate not less than 50 mm thick If these criteria are not met, the specified strength properties must be at least doubled.

    3. In this specification, permeability, k, of the geotextile not less than 1 times the permeability of the soil has been adopted. In the case of important structures, or those where the permeability of the geotextile is critical, more precise methods and

    different specifications should be employed. This specification is not suitable for fine clay, and may not match the flow of

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    water through coarse sands and gravels. The designer must consider variations to this specification in these circumstances. More details…click here

    Sustainability Specification

    Geotextiles for Filters and Drains shall:

    ? effectively reduce soil erosion; and/or

    ? effectively trap and treat contaminants rather than allowing them to run off or be dumped.

Suitable products are:

    Specified requirements Complying product reference Contact for further details Filter and drainage to drain soil behind Geotex401 For further information on the retaining walls and structures suppliers of these products The geotextile shall be protected contact Electronic Blueprint against tear or puncture. Note 2 p: +61 2 4360 2255

    e: ? Cohesive and other fine

    sales@electronicblueprint.com.agrained soils such as silts and u clays w: ? Cohesionless soils such as www.electronicblueprint.com.au sands

Protection Boards

    When protection boards are required to prevent damage to waterproof membranes and/or drainage cells from backfilling, they shall be manufactured in a material that is inert and non-reactive to water, soils and chemicals. More details…click here

    Sustainability Specification

    Protection Boards shall:

    ? Effectively contribute to the reduction of soil erosion; and/or

    ? Effectively contribute to the trapping and treatment of contaminants rather than allowing them to run off or be

    dumped.

Suitable products are:

    Specified requirements Complying product reference Contact for further details Protection boards to prevent Protection Boards For further information on the damage to waterproof suppliers of these products contact membranes and/or drainage Electronic Blueprint cells p: +61 2 4360 2255

    e: sales@electronicblueprint.com.au

    w: www.electronicblueprint.com.au

Drainage Fill

    Drainage fill material shall comply with the Drawings, Building Regulations and relevant Standard (AS 2758.1). Unless stated otherwise, drainage fill material shall be GP (poorly graded gravel) single sized gravel of nominal size 10 mm to 20

    mm complying with the following specification.

    Sieve Percent Passing

    26.5 mm 100

    19.0 mm 70 - 100

    13.2 mm 0 - 100

    9.52 mm 0 0

    More details…click here

Waterproofing

Positive Side Surface Sealing of Masonry Retaining Walls

    (Refer to specification for Painting & Coatings)

Negative Side Surface Sealing of Masonry Retaining Walls

    (Refer to specification for Painting & Coatings)

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