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INTRODUCTION

Maccaferri SA (Pty) Ltd, formerly known as African Gabions, a subsidiary of the Maccaferri Group founded in Italy in 1879, is a company that specialises in providing products and solutions for the preservation of the environment. Our traditional double-twist wire mesh products are typically used for flood protection, landslide control, channel linings, embankment stabilisation and erosion control all over the world. In addition, Maccaferri SA provides a range of geotextile and erosion control blankets to compliment our existing core products. Other services offered by Maccaferri SA include technical design assistance, design software, training and on-site assistance.

THE WIRE

Mild steel wire to SANS 675:1997 is used in the manufacture of all our wire mesh products. The heavy duty Class A zinc coating is applied by hot-dip galvanising to SANS 675:1997. The additional 0.5mm PVC coating is extruded onto the zinc coated wire to comply with SANS 1580:2005.

PVC Coating

Zinc Coating

Mild Steel

SPECIFICATIONSSOUTH AFRICAN SPECIFICATIONS

SANS 675:1997SANS 675:1997SANS 1580:2005SANS 1580:2005

Wire SpecificationsZinc Coating *PVC Coating **Mesh Specifications

b

THE MESH

Woven wire mesh is a non-ravelling mesh made by twisting continuous pairs of wires through three one-half turns (commonly known as double-twist) which are then interconnected to adjacent wires to form hexagonal openings. Maccaferri SA manufactures woven mesh to comply with the requirements of SANS 1580:2005.Galfan is a eutectic Zn-Al mischmetal: a combination resulting in a more uniform crystalline microstructure and an improved mechanical characteristics. Consists of steel wire corrosion protection with a ±95% Zinc and ±5% Aluminium Alloy. Small additions of Cerium-Lanthanum rare earths to of the improve the reliability of the coating process.

MESH TOLERANCEThe tolerance on the opening of mesh “b” being the distance between the axis of two consecutive twists according to SANS1580:2005.

MESH CHARACTERISTICSWire Diameter (mm)

Mesh Selvedge

Specifications: All lacing wire - 2.2mm for galvanised mesh and 2.2 / 3.2mm for PVC coated mesh

b (mm)

6080

MeshType

Tollerance(mm) Galv Galfan Galv/PVC Glafan/PVC Galv Galfan Galv/PVC Glafan/PVC

6080

-4 +10-4 +10

2.22.7 2.7

2.2 / 3.22.7 / 3.7 2.7 / 3.7

2.73.4 3.4

2.7 / 3.73.4 / 4.4 3.4 / 4.4

WIRE TOLERANCENominal DiameterTolerance ± *Zinc Coating

(mm)(mm)g/m2

3,00,8275

2,70,08275

2,20,08245

3,40,1275

4,40,1290

3,90,1290

2,50,08260

Galfan Coating ** g/m2 245245230 265 265265230

* According to SANS 675:1997** According to EN 10244-2 Table 2 Class A

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BIOMAC™BioMac™ is a biodegradable erosion control blanket manufactured from randomly arranged coconut husk fibres layered between photosensitive polypropylene netting to produce a coir mat. When contained with Galvanised and PVC coated wire mesh, BioMac™ is used for erosion control and re-vegetation of river banks, streams and slopes. For light applications, BioMac™ may be used without the mesh containment. All Mesh Rolls are manufactured in both Mesh Type 60 and 80 and conform to the specifications detailed under Double Twist Wire Mesh Rolls.

BIOJUTEBioJute is a biodegradable erosion control blanket manufactured from fabric woven into an open mesh from rugged, heavy jute yarn. BioJute is used for erosion control and re-vegetation where partial protection of the river banks, streams and slopes is required. BioJute is available in packs and rolls.

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MACMAT™-RMacMat™ can be combined with double-twist wire mesh reinforcement to form MacMat™-R. This is used for long-term root reinforcement, erosion control, re-vegetation and when used with soil nails and shotcrete, for temporary slope stabilisation. This unique combination marries the excellent anti-erosion properties of the 3-dimensional MacMat™ geomat and the well-known strength properties of double-twist mesh.

MACMAT™MacMat™ is a three-dimensional erosion control mat manufactured from entangled polypropylene mono-filaments, heat bonded at the contact points. When combined with Galvanised and PVC coated wire mesh, MacMat™ is used for long term root reinforcement, erosion control and re-vegetation. For lighter applications, MacMat™ may be used without the mesh combination. All Mesh Rolls are manufactured in both Mesh Type 60 and 80 and conform to the specifications detailed under Double Twist Wire Mesh Rolls.

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GEOTEXTILESThe AG range of non-woven geotextiles are manufactured from double needle-punched continuous polyester filaments. The AG geotextile has been specifically developed for use with double twist mesh and gabion products and has excellent mechanical and filtration characteristics. Their high energy absorption, initial modulus and resistance to de-tangling of fibres make the AG range ideal for functions of filtration, separation, abrasion and protection.

MACDRAIN™ 2LMacDrain™ 2L is a light and flexible geocomposite material which has a drainage core of looped polypropylene filaments. It is covered with a non-woven polyester geotextile on both sides providing a high drainage capacity. The three components are thermally welded along the surface. Each side of the geotextile exceeds the edge of the drainage core by 100mm. A continuous surface filtering is achieved by overlapping the butt-joints of the adjacent MacDrain™ 2L strips.

2L

1L

2LFP

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REINFORCED ECOLOGS™Reinforced EcoLogs™ are cylindrical biodegradable sleeves manufactured from BioMac™, bound together with twine and reinforced with Galvanised or PVC coated wire mesh. Reinforced EcoLogs™ are used to reduce sheet erosion and create a micro-climate for vegetation establishment. All wire is 2,2mm mild steel to SANS 675:1997, zinc coated by hot-dip galvanising to SANS 675:1997 and, for PVC coated units, heat bonded through extrusion with a 0,5mm heavy duty PVC coating to SANS 1580:2005. Reinforced EcoLogs™ are manufactured in Mesh Type 60.For lighter applications, EcoLogs™ may be supplied without the mesh reinforcement.

SACK GABIONSSack Gabions are double twist hexagonal wire mesh units consisting of a single mesh panel laced to form a cylindrical unit. Sack Gabions are filled with rock at the project site to form flexible, permeable, monolithic structures used for emergency and river training works, where local conditions require fast installation or the water does not allow easy access to the site (underwater installations). All wire is mild steel to SANS 675:1997, zinc coated by hot-dip galvanising to SANS 675:1997 and, for PVC coated units, heat bonded through extrusion with a 0,5mm heavy duty PVC coating to SANS 1580:2005. All Sack Gabions are manufactured in Mesh Type 80 to SANS 1580:2005, having 3,4mmØ frame wire and 2,7mmØ mesh wire and an additional 1mm to all wire diameters for PVC coated units.

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GABIONS

RENO MATTRESSES™

Gabions are double twist hexagonal wire mesh baskets of variable sizes, uniformly partitioned into internal cells. All wire is mild steel to SANS 675:1997, zinc coated by hot-dip galvanising to SANS 675:1997 and, for PVC units, heat bonded through extrusion with a 0,5mm heavy duty PVC coating to SANS 1580:2005. All gabions are manufactured in Mesh Type 80 to SANS 1580:2005, having 3,4mmØ frame wire and 2,7mmØ mesh wire and an additional 1mm to all wire diameters for PVC coated units. Gabions are filled with stone at the project site to form flexible, permeable, monolithic structures, such as retaining walls, bridge abutments, sea walls, weirs, culverts and river bank protection.

Reno Mattresses are double twist hexagonal wire mesh baskets of variable sizes, uniformly partitioned into internal cells at typically 1m centres. All wire is mild steel to SANS 675:1997, zinc coated by hot-dip galvanising to SANS 675:1997 and, for PVC units, heat bonded through extrusion with a 0,5mm heavy duty PVC coating to SANS 1580:2005. All Reno Mattresses are manufactured in Mesh Type 60 to SANS 1580:2005, having 2,7mmØ frame wire and 2,2mmØ mesh wire and an additional 1mm to all wire diameters for PVC coated units. Reno mattresses are typically used for the protection of culverts, bridge abutments, river banks and shorelines, channels and spillways.

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CATCH FENCES

CASTORO MATTRESSES™

OM250, OM1000 & OM2000 Catch Fences are rockfall barriers able to resist a minimum impact load of 250kj, 1000kj and 2000kj respectively. This system has the catch net downhill of the barrier. Since the posts work independently from the net, a direct impact on the posts would not impede the immobilisation of the rock boulder by the net. The barriers components are designed to be easily transported and assembled in extreme conditions. The barrier has been designed and produced to comply with the norm UNI EN ISO 9001.

Castoro Mattresses are double-twist hexagonal wire mesh (2.2mm Ø - SANS 1580:2005) baskets, filled with rock to form flexible, permeable, monolithic structures for river bank and scour protection, channel linings for erosion control and underwater pipeline protection. The steel wire used is heavily Galfan coated and if required, a PVC coating is extruded over the Galfan wire to provide added protection for use in aggressive environments. The base, diaphragms, front, end and sides are manufactured from one continuous panel of mesh. The base is folded onto itself at 1.0m intervals to form double diaphragms that are automatically secured with spirals, prior to folding up the sides and securing to the diaphragms.

HeightPost DistanceTop Edge Border

Uphill Anchor LoadLateral Anchor LoadDownhill Anchor Load

CATCH FENCES

45-1050500200300

-

OM250

41070500415415195

OM1000

51070

500140200195

OM2000

mmcmcmkNkNkN

Units

Lateral Edge Border

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ROCKFALL NETTINGDouble twist wire mesh rolls are used for the protection of slopes and cliffs where there may be danger of falling rocks. When used in conjunction with erosion control blankets they assist with environmental rehabilitation and erosion control. All wire is mild steel to SANS 675:1997, zinc coated by hot-dip galvanising to SANS 675:1997 and, for PVC coated wire mesh, heat bonded through extrusion with a 0,5mm heavy duty PVC coating to SANS 1580:2005. Mesh Rolls are manufactured in both Mesh Type 60 and 80.

HEA PANELS The new HEA Panel (High Energy Absorption) combines high strength features of the wire rope with the steel knot. The new knot is made by two bindings, each one obtained by looping a pair of steel 3.0mmØ wires coated with a 95% Zinc-Aluminium, 5% Mischmetal alloy. The two bindings tightly envelope the ropes crossing each other. The panel is made of square meshes manufactured with one rope, closed by an aluminium pressed spinning cot, with resistance not less than 90% of the rope-breaking load.

400 x 4003.06.0

380-5003§

24.411.9

Panel Dimensions - MeshPanel HeightPanel Length

Knot - Binding rodsBreaking load of wire (bars)Diameter - UNI EN 10218

Tear Resistance

HEA PANELS

Max Load of tear breakMin breaking load of the rope

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TERRAMESH™ SYSTEMThe Terramesh™ System is a modular system used for soil reinforcement applications such as mechanically stabilised earth walls and slopes. The Terramesh™ System is a completely assembled unit made of double twist heavily galvanised and PVC coated wire mesh, where a continuous double twist wire mesh panel forms the reinforcement as well as the front and top of a gabion style facing section. The back panel, ends and diaphragm of the facing section are connected to the unit during manufacture. This creates rectangular shaped cells used for stone confinement. All wire is mild steel to SANS 675:1997, zinc coated by hot-dip galvanising to SANS 675:1997 and heat bonded through extrusion with a 0,5mm heavy duty PVC coating to SANS 1580:2005. All Terramesh™ System units are manufactured in Mesh Type 80 to SANS 1580:2005, having 4,4mmØ frame wire and 3,7mmØ mesh wire.

GREEN TERRAMESH™Green Terramesh™ is an environmentally friendly modular system used for soil reinforcement such as mechanically stabilised earth slopes and embankments. Green Terramesh™ is a completely assembled unit made of double twist heavily galvanised and PVC coated wire mesh lined with BioMac™ and strengthened with a welded steel panel. Two pre-formed steel brackets incline the front face at an angle of 70º to the horizontal. The angled front face and the BioMac™ facilitate the establishment of natural vegetation of the units. All wire is mild steel to SANS 675:1997, zinc coated by hot-dip galvanising to SANS 675:1997 and heat bonded through extrusion with a 0,5mm heavy duty PVC coating to SANS 1580:2005. All Green Terramesh™ units are manufactured in Mesh Type 80 to SANS 1580:2005, having 4,4mmØ frame wire and 3,7mmØ mesh wire. The welded steel panel is manufactured from 6mmØ mild steel bars with aperture size 160mm x 200mm.

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ROADMESH™RoadMesh™ is typically used as a reinforcement to the wearing coarse of asphalt pavements, consists of double twist woven mesh manufactured from heavily galvanised mild steel, and transversely reinforced at regular intervals with steel rods. All wire is mild steel to SANS 675:1997 and zinc coated by hot-dip galvanising to SANS 675:1997. RoadMesh™ is manufactured in Mesh Type 80.

FLEXMESH™FlexMesh™ is typically used for beach front vehicular deployment, emergency roadways and temporary roadway stabilisation. FlexMesh™ consists of hexagonal double twist woven mesh manufactured from heavily galvanised mild steel wire, transversely reinforced at regular intervals with steel rods and, on one side of the wire mesh panel, lined with a pre-attached geotextile for separation. All wire is mild steel to SANS 1580:2005, zinc coated by hot-dip galvanising to SANS 675:1997. FlexMesh™ is manufactured in Mesh Type 80. The geotextile is a non-woven, compact, needle-punched polyester type AG300, with a minimum weight of 265g/m².

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PARAWEB™ParaWeb™ strips are planar structure consisting of a core of high-tenacity polyester yarn tendons encased in a polyethylene sheath. The strips are suitable for reinforcement applications in combination with concrete wall-facing panels.

27.1417.51

kNkN

27Units

PARAWEB™Tensile and Mechanical Properties

36 45 54 63

ParaWeb™ MD36.1823.34

45.2229.17

54.2735.01

63.3140.85

Ultimate Tensile StrengthLong term tensile (64.5% of UTS)

27.1417.51

kNkN

ParaWeb™ ME36.1823.34

45.2229.17

54.2735.01

63.3140.85

Ultimate Tensile StrengthLong term tensile (64.5% of UTS)

27.1417.51

kNkN

ParaWeb™ MS36.1823.34

45.2229.17

54.2735.01

63.3140.85

Ultimate Tensile StrengthLong term tensile (64.5% of UTS)

30.1619.46

kNkN

ParaWeb™ 2D40.2025.94

50.2732.43

75.4048.65

100.5464.86

Ultimate Tensile StrengthLong term tensile (64.5% of UTS)

ParaWeb™ MDParaWeb™ MEParaWeb™ MSParaWeb™ 2D

MACFORCE™The Maccaferri system of vertical walls with a concrete facing geared towards an ever increasing market for civil engineering applications. It is a tried and tested system used extensively. This system is ideal for the construction of a wall where high loads, durability and robustness is the requirement. Maccaferri SA has adopted both the MacForce™ and MacRes™ cladding panels and developed the technology to provide innovative solutions for both products.

Facial Dimensions - Top 2100 x 7851820 x 785

12.43.2

18.868

16026.70

8100

Facial Dimensions - BottomThickness

Reinforcement50T Panel - SteelDiameterSpacing

MACFORCE™

Effective wall area

50T Panel - SteelDiameterSpacing

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MACGRID® WGMacGrid™ WG is a woven high-strength geogrid composed of high-tenacity, multifilament polyester yarns woven in tension and PVC coated to form a stable fabric. MacGrid® WG is ideal for applications where reinforcement of soils is essential and has been tested internally and independently, in accordance with published standards.

PARARIB™ParaRib™ mining grids have been developed from ParaGrid™ geogrids and are made from ParaWeb™ which is based on strips of a planar structure consisting of high-tenacity polyester filament yarns encased in a tough and durable flame-retardant, white polymeric sheath. ParaRib™ has been designed specifically for use in underground mining where flame-retardancy is a requisite. The white polymer used enhances light reflectance and visibility when used in areas of limited illumination. ParaRib™ is suitable for lining tunnel walls and for salvage applications.

Roll widthRoll lengthStrength - length

Warp element pitchWeft element pitchMass

PARARIB™

4.555101075150300

10/10

4.55530247575460

30/24

4.5551001007575820

100/100

mm

kN/m-1

kN/m-1

mmmmgm-2

Units

Strength - width

MACGRID® WGMechanical Properties

WG11 WG15

(1)MD = Machine Direction (2)XD = Cross Mchine Direction

WG6WG2Units

Tensile Strength - Length Direction 252510

27281903.9100

703510

24282403.9100

1303510

21283203.9100

1703510

20284003.9100

WG20

2202510

19285003.9100

Physical Properties

Tensile Strength - Cross Diretion

Elongation - Length Direction

Grid Aperture Size (MD(1))Grid Aperture Size (XD(2))

Roll WidthUnit Weight

Roll Length

EN ISO 10319

EN ISO 10319

EN ISO 10319

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PARALINK™ParaLink™ geocomposites are planar structures consisting of a regular array of composite geosynthetic straps, nominally interconnected laterally to form soil reinforcement materials with high unidirectional strength.

ACCESSORIES

To assist with fastening operations of double-twist mesh products, fastening tools and ring fasteners are available. The rings are supplied in boxes of 1600 and are available in galvanised or stainless steel.

Ring Fastening Tool

To assist with closing of the Gabion box and TerraMesh™ System lids, Closing tools are available from our offices.

Closing Tool

Pre-formed braces are available as a substitute for bracing wire. Pre-formed braces are supplied in 3.4mm Ø Class A Galvanised wire or 4.4mm Ø Class A Galvanised and PVC coated wire. Pre-formed braces are sold separately.

Pre-formed Braces

Steel pegs are used to secure erosion control blankets such as BioMac™, BioJute and MacMat™ to the soil interface beneath. Steel pegs are available in packs of 100.

Steel Pegs

Roll widthRoll lengthRoll Diameter

Warp element pitchWeft element pitchWarp element width

PARALINK™

4.51000.3827018010008210012

100

4.51000.6159018010009040012

400

4.51000.56580180

100091

80012

800

mmmkg

mmmmmm

kN/m-1

%

Units

Roll gross weight

Breaking Load(BL)Extension at BL

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SOFTWARE

The GawacWin™ program was developed to provide designers with a quick and reliable way to analyse and verify mass gravity gabion walls through a user-friendly Windows™ graphics interface. The program takes into account the mechanical characteristics of gabions manufactured by the Maccaferri Group.

GawacWin™

Through a user-friendly Windows™ graphics interface, Macra 1™ conducts the stability analysis of water course cross-sections, with respect to water flow by checking the hydraulic stability of different bank protection linings given an allowable shear stress and roughness coefficient for that material.

Macra 1™ - Bank Protection

Macra 2™ was developed to provide engineers with a rapid and efficient tool with which to conduct the hydraulic and static analysis of different type of gabion weirs. The software operates through a user-friendly Windows™ graphics interface.

Macra 2™ - Weirs

MacStars 2000™ provides wall designers with a reliable way to execute the correct analysis for the stability verification of reinforced soil walls and slopes.

MacStars™ 2000

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SOFTWARE cont.

The Macro 1™ program evaluates the behaviour of unstable surficial revetments constrained with cable panel systems and is able to design both the mesh and nail. The program chooses the appropriate mesh and takes the characteristic of the nails into account. Using a friendly interface, it is possible to customise a lot of input like the rock-face geometry, geotechnical model and the most dangerous joint.

Macro 1™

The Macro 2™ program evaluates the stability of the chosen drapery system based on debris volume vs allowable tensile stress. The program allows calculation of the total stress on an Adherence Mesh System on a slope due to debris weight at the slope toe, weight of the mesh structure, and weight of snow over the structure.

Macro 2™

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ZAF / PRODUCT GUIDE: Eng - Rev. 04, Apr 2009 - Maccaferri SA (Pty) Ltd, Durban, South Africa - Designed by: Branden Grant - Printer: Pro-Print (Pty) Ltd.Website: www.maccaferri.co.za

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MACCAFERRI SA (PTY) LTDHEAD OFFICE - DURBAN, SOUTH AFRICA:P O Box 15777, Westmead, 3608Tel: +27-31-700 8456 Fax: +27-31-700 8469e-mail: dbnsales@maccaferri.co.za

JOHANNESBURG, SOUTH AFRICA:P O Box 2285, North Riding, 2162Tel: +27-11-704 0160Fax: +27-11-704 0159e-mail: jhbsales@maccaferri.co.za

CAPE TOWN, SOUTH AFRICA:P O Box 22150, Fish Hoek, 7974Tel: +27-21-702 1416Fax: +27-21-702 2977e-mail: cptsales@maccaferri.co.za

Quality System Guaranteesproduction, certified internal management and

technical assistance in compliance with ISO 9001:2000

EAST LONDON, SOUTH AFRICA:P O Box 5481, Greenfields, 5208Tel: +27-43-731 1580Fax: +27-43-731 1584e-mail: ecsales@maccaferri.co.za

MADAGASCAR:BP 168, Antananarivo 101, MadagascarTel: +261-20-22-231 02Fax: +261-20-22-553 90e-mail: maccaferri@moov.mg