A division of PSV Industrial Pty Ltd

Dear ReaderWe would like to thank you for your interest in our products and services.

The purpose of this brochure is to introduce you to our range of products and the type of services we provide. Please treat this as a guide which can be enhanced by personal contact with us and additional information.

We would like to know about your specific applications and can assist by providing you with the most current and proven technical details. Thereby ensuring that you have access to the most effective lining solutions currently available.

We are fully aware that we are working within a competitive market and we therefore strive to be your Lining Supplier and Installer of choice. To achieve this we offer our clients the highest available quality of linings, “state of the art” welding technology, extensive experience and an attitude based on completing the work with a minimum amount of “fuss” and within programme.

Our track record illustrates that we do not make hollow claims about our abilities nor do we compromise our standards. Being an ISO 9001 – 2008 registered Company, Engineered Linings has implemented a Management system involving advanced CQA procedures. This is combined with highly trained installation teams and state of the art installation equipment.

We have a wide spectrum of completed projects which are used as reference works and information is available on these by request.

Place your confidence in Engineered Linings – we look forward to being your lining installation provider of choice!

Please contact us for immediate assistance with your projects.

Yours Sincerely

The ENGINEERED LININGS team

FOUNDED 1984

Providing the best available Geosynthetic Lining and installation serviceEngineered Linings is a specialist contracting company, concentrating on the supply and installation of geomembrane liners and associated geosynthetic products for the purpose of containment, environmental and corrosion protection.

Engineered Linings has been the proud provider of specialist geomembrane linings and related installation services since 1984, operating out of offices in Cape Town and Johannesburg. We are active throughout the African Continent and beyond.

MaterialsOur most commonly used liners are High Density Polyethylene (HDPE) and Linear Low Density Polythylene (LLDPE), Reinforced Polypropylene (RPP) as well as Anchor Knob Sheet (AKS), a cast-in concrete protection liner. These liners offer both cost and technically effective solutions to projects.

MiningHeap leach pads

Slimes disposal

Water storage dams

Processing ponds

Tailing storage facilities

EnvironmentalLandfilll bases and caps

Leachate ponds

Leachate collection drains

Cut-off barriers

IndustrialEvaporation ponds

Floating covers

Storage dams - water or chemicals

Rehabiliting concrete structures

AgricultureCanals

Dams - concrete, earth or irrigation

Biogas digesters

Concrete PipesConcrete sewer pipes are corroded by sulphuric acid produced by bacteria present in the sewage flowing through the pipes. This corrosion can be so aggressive that it causes eventual concrete sewer pipe collapse. Anchor Knob Sheeting is a cast- in concrete protection lining made of HDPE which protects concrete sewer pipes against

corrosion. AKS extends the life of a sewer by many years and as the lining surface remains unchanged during its service life, it maintains the original friction coefficient used for design purposes. These lined pipes have the structural strength to cope with the loads required at a fraction of the cost of solid walled HDPE pipes able to withstand the same loads.

Floating CoversReinforced flexible geomembrane covers can be constructed over lined reservoirs. These covers are able to float up and down as the water level in the reservoir changes. The cover prevents any evaporation or contamination of potable water and keeps the liquid cool. The cover can also be constructed as an odour control system. Lined reservoirs with floating covers incur only a fraction of the capital and maintenance costs of traditional concrete reservoirs.

Mining ApplicationsThe use of geomembrane liners in mining applications is extensive and typically involves the lining of ponds, heap leach pads, tailings facilities, bund areas and solution corridors.

Due to the excellent chemical and ultra violet (UV) resistant properties of the lining formulations, containment of the chemicals used in the mining industry can be easily and cost effectively dealt with by using geomembranes. The lining safeguards the potential loss of highly valuable pregnant solution and simultaneously protects the environment and ground water.

Lining of Sewerage Oxidation PondsThe Department of Water and Sanitation, has clamped down on ground water pollution caused by oxidation ponds. The lining of these ponds, whether they are new or existing, can be easily and successfully completed using a geomembrane liner.

Lining of Landfill SitesThe Department of Water and Sanitation’s minimum requirements call for the installation of geosynthetic liners to the bases of all landfill sites and ponds containing aggressive liquids.

The geosynthetic liner protects the environment from the highly aggressive and toxic leachate percolating through the waste.

Earth DamsThe construction of dams for agriculture and fish farms can be greatly simplified by using geomembrane liners. This watertight barrier means easier construction of the embankments and dam walls and eliminates the need for costly clay core barriers.

Containment of Aggressive EffluentHDPE is considered chemically inert and offers a high chemical resistance barrier for containment of industrial pollutants.

Rehabilitating old Concrete Dams Geomembrane liners offer a cost effective method for extending the service life of old concrete structures. The geomembrane liner offers a durable, impervious and flexible seal.

Rehabilitating Existing and Constructing New Concrete ReservoirsLLDPE offers a watertight, flexible sealing membrane which is attached to the inside of existing leaking concrete reservoirs; at a fraction of the cost of building a new one.

Case StudiesLandfillsApplication DetailsChrome International is a joint venture between Bayer SA and Sentrachem. The plant produces sodium dichromate crystals, sodium dichromate solution and chromium trioxide, and the waste stream generated requires secure storage to prevent pollution.

The hazardous landfill was the first phase to be developed for Chrome International South Africa and exceeds existing legislation requirements.

An advanced double liner system incorporating a leak detection layer was installed.

Photographs show partial completion of one slope with the white GCL awaiting the final 2,0mm thick HDPE liner.

On the far slope of the second photo, all 5 layers can be seen. Moving left to right is 1,0mm HDPE, Geonet, Geomesh, GCL and finally 2,0mm HDPE.

In the foreground, Geotextile is used for protection of a temporary walkway.

The composite lining installation to Phase 1 took approximately 6 weeks to complete. It was however filled far quicker than anticipated and Phase 2 had to be constructed and lined during the first half of 2000. We installed the same composite lining system in both phases.

Proj

ect

Ove

rvie

w

Oth

er L

andfi

ll Pr

ojec

tsClient Chrome International South Africa

Project Hazardous Landfill site, Newcastle

Liner Specification Primary Liner - 2,0mm HDPE

Secondary Liner - GCL

Slope Re-inforcement - Geomesh

Intermediate Drainage - Geonet

Tertiary Liner - 1,0mm HDPE

Size 357 200m2

Date Completed 1998

Consultants Steffen Robertson & Kirsten

Aloes Cell 2 (H:H)

Bellville South - Cells 5, 6 & 7 (GLB+)

Bulbul Drive - Phases 1, 2A, 2B & 2C (1&2) (H:h)

Brugspruit Hazardous Waste Lagoon (H:h)

Holfontein - Cells 1A, 3, 4, 5, 6A, & 6B (H:H)

Mariannhill - Cells 1, 2A, 3 & 4A (GLB+)

Mossgas Hazardous Waste pond No. 3 (H:H)

Shongweni - Cells 1, 2, 3 & 4 (H:h)

Umlazi - Northern Site (H:h)

Vissershok Waste Management Facility Cells 2 & 3

Vissershok/ CMC - Cell 2, 3, 4 (H:H)

Coastal Park Landfill (CMC) Phase 2A, 2B, 2C, 2D (GLB+)

Buffesldraai Landfill (GLB+)

Kupferberg Landfill - Windhoek, Namibia

DCLM Landfill - Kwazulu Natal

Case StudiesHeap Leach PadsApplication DetailsEngineered Linings was contracted through AMS (African Mining Services) to line Phase 2 of the Goldfields Ghana Heap Leach Project in Tarkwa. This involved the installation of 390 000m2 of 1,5mm thick HDPE liner to 6 pads, separated by divider berms.

A leaching solution of sodium cyanide is sprayed on the 8 - 10m high lifts of crushed gold bearing ore to extract the gold. The function of the HDPE liner is to capture the “pregnant solution” at the base of the heaps and lead it, via launders, to the containment pond for processing. The liner installation took 3,5 months to complete.

The lining was to be durable enough to withstand the load of the ore, ultimately stacked up to 40m high, and any chemical attack.

1,5mm thick Hexene based HDPE was specified. Engineered Linings had this material shipped to Takoradi in Ghana and then transported overland to Tarkwa.

Over 40 labourers from the local village were used and their rates and hours had to be negotiated with the village chief. Credit must be given to our 6 technical staff members who controlled and supervised the installation.

The commencement of the prefect was delayed by 3 weeks due to heavy rains and subgrade damage. Engineered Linings was able to make up this backlog and still complete the project by the original handover date.

Proj

ect

Ove

rvie

w

Oth

er H

eap

Leac

h Pa

d Pr

ojec

tsClient Goldfields Ghana Ltd.

Project Phase 2 - Tarkwa Gold Mine, Ghana

Liner Specification 1,5mm HDPE

Size 390 000m2

Date Completed February 2000

Consultants Metago Environmental Engineers

Iduapriem Gold Mine - Ghana - 110 000m2

Suzdal Gold Mine - Kazakstan - Phase 1, 2 & 3 - 99 000m2

Yatela Gold Mine - Mali - Pads 1, 2, 3, 4, 5, 6, 7…15 - 1 903 400m2

Tarkwa Gold Mine - Ghana - Phases 2, 3 & 4 - 1 456 700m2

Blue Ridge Gold Mine Project - Ghana - 473 100m2

Tarkwa Gold Mine - Goldfields, Ghana - Phase 5 - 931 500m2

Teberebie Gold Mine - Ghana - 167 000m2

Tsumeb Corporation - Namibia - 1 260m2

Angovia Gold Mine - Ivory Coast - 221 000m2

Kalsaka Gold Mine - Burkina Faso - 288 000m2

Zeravshan Gold Mine & Dam - Tajikistan - 65 000m2

Amesmessa Gold Project - Algeria - 156 640m2

Case StudiesWater FeatureApplication DetailsLake Michelle has a unique setting alongside an existing lake and wetland system. The developers needed to incorporate a new lake system in such a way that the two systems could interact with each other in a completely controlled environment. The existing wetland is protected and any new development could not impact on this in anyway.

Engineered Linings were asked to assist in developing a lining system for the new lakes which would not only blend in with the surroundings, but also offer a complete watertight barrier between the new lakes and the existing wetland.

A 1,0mm thick Vitaline HDPE liner was installed in the excavated lakes.

One of the design criteria was that a “soft edge” be incorporated in which reeds and plants could be planted, so that the liner would not be visible. This “soft edge” design allowed for soil to be placed on top of the liner but also meant that it would not slip off the liner once the soil was saturated.

Another feature of the project is the many scenic walkways which follow the perimeter of the lakes and also prefect out into the water. The liner design incorporated the many poles which were needed to support the walkway system. These poles were jetted into the soil beneath the liner and then each pole was sealed to the liner using a Geosynthetic Clay Liner (GCL), held in place by a confining layer of sand and cement.

Overall the project ran extremely smoothly and the combined effort of the Burger and Wallace contractors, the design engineers de Villiers Sheard and the engineers from Engineered Linings, ensured that the final lining system met all the required criteria.

Proj

ect

Ove

rvie

w

Oth

er W

ater

Fea

ture

Pr

ojec

tsClient Burger and Wallace

Construction

Project Lake Michelle, Noordhoek, Western Cape

Liner Specification 1,0mm Vitaline HDPE

Size 51 300m2

Date Completed 2005

Consultants De Villiers Sheard

Sun International - Lost City - Canals, Ponds, Waterways

Sun International - Boardwalk Casino - Port Elizabeth - 17 000m2

2 Spilhaus Ave, Constantia - 134m2

Sun West International - Grand West Casino - 3 700m2

International Business Gateway - 3 000m2

Daimler Chrysler - Century City - 714m2

Calswald Water Feature - Midrand - 2 531m2

House Parker - Somerset West - 840m2

Sibaya Casino - Durban - 5 890m2

Carnival City - Brakpan 20 000m2

Case StudiesConcrete Sewer PipelinesApplication DetailsCape Town City Council required a permanent solution to internal corrosion of large diameter concrete sewers. Engineered Lining’s solution was Anchor Knob Sheeting. The use of AKS by the City Council on all 3 phases of this sewer showed their commitment to a long-term solution for the corrosion protection of concrete sewers.

AKS is cast into the concrete pipes during the manufacturing process to form an integral part of the pipe.

This is a reliable, permanent solution to an ongoing concrete corrosion problem. The sewer pipe is equiped with spigot and socket joints.

The final operation involved extrusion welding of capping strips across the joints.

Proj

ect

Ove

rvie

w

Oth

er A

KS

App

licat

ions

Client Cape Town City Council

Project Three phases of the Cape Flats Outfall Sewer

Liner Specification 3,0mm Thick HDPE Anchor Knob Sheets (AKS), formed around 300º to inside concrete pipe. Invert of pipe was left unlined. Pipe internal diameter 1,75m

Size 39 900m2

Date Completed 1992, 1993 & 1995

Swartkops Sewer - Phase 1, 2 & 3 - Port Elizabeth - 28 000m2

Impala Platinum Refinery - Sumps and Channels - 900m2

Bulong Nickel - Australia - Concrete structure - 3 200m2

Botswana Government - Gaborone - Sewer - 11 200m2

Eskom - Demineralized Water Storage - Majuba - 5 900m2

Gateway Sewer Project - Cape Town - 23 320m2

Mamelodi Sewer - Gauteng - Phase 1 & 2 - 21 480m2

Potsdam WWTP - Milnerton - 200m2

Virginia Sewer - Free State - 780m2

Southern Pipes - Gauteng - 5 860m2

Modderfontein outfall sewer - Johannesburg - 23 500m2

Deep Tunnel Sewerage System - Singapore - 510 800m2

Case StudiesTunnelsApplication DetailsThe Aquaduct carries water through a series of pressured tunnels from the Inanda Dam across the Emolweni Valley to the Inanda Wiggins treatment works. From here water is distributed to Durban and surrounding areas. The inlet and outlets of the Clermont (5,3km) and Emolweni (5,4km) tunnels were lined. These tunnels link up to the existing Reservoir Hills tunnel.

2,0mm Carbofol CHD was chosen to line these tunnels due to its flexibility in adapting to uneven surfaces and it’s ease of jointing using hot wedge welding machines.

A white signal layer surface to the black liner provides evidence of any mechanical damage that might occur during installation. It also greatly improves lighting in the tunnel.

A geotextile is fixed to the surface of the tunnel with rondelles that are compatible for jointing to the 2,0 Carbofol CHD.

The liner is then placed against the geotextile and welded to the rondelles.

A wheeled scaffold allows easy access to the roof and sides of the tunnel for the installation team.

The joints were welded by automated double wedge welding machines. Photograph shows fixed liner awaiting welding of the joints.

The lining installation was phased over 8 months to accommodate the availability of sections of tunnel.

Engineered Linings was responsible for the supply and installation of all geosynthetic materials.

Proj

ect

Ove

rvie

w

Oth

er T

unne

lPr

ojec

ts

Client Umgeni Water

Project Inanda Wiggins Aqueduct, Durban

Liner Specification 2,0mm Carbofol CHD

Size 9 300m2

Date Completed 1994

Consultants Keeve Steyn & Partners

Lesotho Highlands Project - Water Transfer Tunnel - 6 800m2 - Carbofol CHD 2,0mm

Case StudiesCanalsApplication DetailsRemedial lining to an existing 3,5km long concrete canal carrying effluent from the Sappi Saiccor Pulp Mill to a pump station near the mouth of the Umkomaas River.

The concrete canal was badly corroded due to the effluent having a pH that varied between 2,2 & 2,7 and a temperature of 58oC. Remedial work was essential to prevent structural failure and contamination of the river.

A major stumbling block for relining was the fact that the effluent stream could not be shut off for any period of time due to 24 hour production at the pulp mill. Therefore the relining had to be executed whilst a constant flow of effluent passed down the canal.

Due to the chemistry of the effluent and its elevated temperature, 5,0mm fPP was chosen as the lining to protect the concrete. The liner was supplied in 10,0m x 6,0m sections and each section was shaped, positioned and

mechanically fastened to the walls of the canal. A specially constructed gantry was utilized to position each section and maintain it in position until connecting of the segments was completed.

The liner segments were joined with specially designed 316 stainless steel coupling frames. A diver, in a water-cooled wet suit, fastened the panels.

The relining took place without any disruption to the production at the paper mill.

Proj

ect

Ove

rvie

w

Oth

er C

anal

Pro

ject

sClient Sappi Saiccor, Umkomaas

Project Effluent Canal

Liner Specification 5,0mm PP

Size 19 000m2

Date Completed 1983

Sappi Saiccor Effluent Canal - 5,0mm PP - 1 000m2

Amplats Marikana mine run off canal - 2,0mm HDPE - 3 900m2

Cape TownP O Box 36614

Chempet 7442South Africa

Telephone +27 (0)21 551 2430Facsimile +27 (0)21 552 5928

Email ct@englining.co.za

JohannesburgP O Box 10300Edenglen 1613South AfricaTelephone +27 (0)11 392 1745Facsimile +27 (0)11 392 1881Email jhb@englining.co.za

www.engineered-l inings.co.za