IMIESA April 2019

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IMESA The official magazine of the Institute of Municipal Engineering of Southern Africa

infrastructure development • Maintenance • service delivery

Go local with TM FLOWTITE GRP pipe Pipes, Pumps & Valves Steel sector supports localisation

Trenchless Technologies

Pipe cracking in Bath Avenue

Roads & Bridges Road funding needs a rethink

IN THE HOT SEAT The construction of the N4 north of Pretoria created a boost to the Rosslyn industrial area and when the current N4 route around Rustenburg was built, it was intended to be a bypass. Today, it’s bordered by major developments on both sides of the N4, and is now regarded as a major economic corridor. ” Solomon Kganyago Commercial Manager, Bakwena ISSN 0257 1978

V o l u m e 4 4 N o . 0 4 • A p r i l 2 0 1 9 • R 5 0 . 0 0 ( i n c l . VAT )

INTELLIGENT ROADS. INNOVATION LIES AHEAD WITH ARRB SYSTEMS

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IMESA The official magazine of the Institute of Municipal Engineering of Southern Africa

volume 44 no. 4 APRIL 2019

INSIDE

INFRASTRUCTURE DEVELOPMENT • MAINTENANCE • SERVICE DELIVERY

Go local with TM GRP pipe

FLOWTITE Pipes, Pumps & Valves Steel sector supports localisation

Trenchless Technologies

Pipe cracking in Bath Avenue

Roads & Bridges Road funding needs a rethink

IN THE HOT SEAT The construction of the N4 north of Pretoria created a boost to the Rosslyn industrial area and when the current N4 route around Rustenburg was built, it was intended to be a bypass. Today, it’s bordered by major developments on both sides of the N4, and is now regarded as a major economic corridor. ” Solomon Kganyago Commercial Manager, Bakwena ISSN 0257 1978

V o l u m e 4 4 N o . 0 4 • A p r i l 2 0 1 9 • R 5 0 . 0 0 ( i n c l . VAT )

Lighter, and as strong as steel, but much more durable, glass-fibrereinforced (GRP) pipes can extend up to 4 m in diameter for applications that include major desalination projects and standard high-pressure bulk water supply. Far from fragile, Flowtite™ GRP offers over 150 years of virtually zero maintenance. P6

3

Editor’s comment

5

President’s comment

Environmental Engineering Steelwire protection for a changing world

25

The pipe polymer partner

29

Groundbreaking technology

31

Replacing the Bath Avenue water pipe

32

The power of Scada

35

Consulting Engineers 8

Bakwena and its community

21

23

Steel pipe sector supports localisation

6

Hot Seat

P8

Firefighting – the Italian way

Water & Wastewater

Go local with FlowtiteTM GRP pipe

The Bakwena Platinum Corridor Concessionaire is a prime example of a successful toll road business that serves as an important catalyst for regional socio-economic growth. Bakwena’s new commercial manager, Solomon Kganyago, speaks to IMIESA about ongoing developments.

Pipes, Pumps & Valves

56

Cover Story

IN THE HOT SEAT

Roads & Bridges SA’s roads overlooked in 2019 budget

SASTT Trenchless News

Regulars

Index to advertisers

16

Ensuring professional, ethical infrastructure services

Municipal Focus | Johannesburg

Risk Management

Diphetogo – Getting Johannesburg working

Copyright law for built environment professionals

11

36

39

Waste Management

Roads & Bridges

Barriers to managing hazardous waste in Africa

Interconnecting KwaZulu-Natal

13

Road asset management: a simple approach

14

SA’s roads overlooked in 2019 budget

16

Load and flow

47

UTPS proves optimal on N5

19

How to handle hot weather concreting

48

Simplified flooring

51

Cement & Concrete

Geotechnical Engineering Road reinforcement for Africa

44

20

Environmental Engineering

Transport, Logistics, Vehicles & Equipment

Steelwire protection for a changing world

Classic compaction

53

Flexible finance for SMMEs

54

25

21

Pipes, Pumps & Valves Steel pipe sector supports localisation

44

Cement & Concrete How to handle hot weather concreting

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EDITOR’S COMMENT

Power and investment

MANAGING EDITOR Alastair Currie SENIOR JOURNALIST Danielle Petterson JOURNALIST Liesl Frankson Head OF DESIGN Beren Bauermeister Chief SUB-EDITOR Tristan Snijders ContributorS Marco Camarda, Randeer Kasserchun, Randy M Mott, Bryan Perrie, Samantha Varela OPERATIONS & PRODUCTION MANAGER Antois-Leigh Botma Production COORDINATOR Jacqueline Modise financial MANAGER Andrew Lobban DISTRIBUTION MANAGER Nomsa Masina Distribution coordinator Asha Pursotham SUBSCRIPTIONS subs@3smedia.co.za Printers Paarl Media KZN +27 (0)31 714 4700 ___________________________________________________

J

ust over a month from now, South Africa’s registered voters will be turning out for the General Elections, being held on 8 May 2019. The end result will represent another milestone in South Africa’s post-1994 democracy. The hope is that the outcomes will serve to unify South Africans and business. Clearer policy decisions and more coherent leadership will make a key difference in how the local and international investor community responds.

In March 2019, leading ratings agency Moody’s took a holding position on South Africa, leaving it at Baa3 – one notch above junk status. Fitch Ratings has kept our investment grade at BB+ (non-investment grade) with a stable outlook, while Standard & Poor’s has ranked South Africa’s long-term foreign and local currency debt ratings at BB and BB+ respectively. Within Southern Africa, the highest graded country on the Moody’s scale is Botswana, with an A2.

For South Africa to lift its game, the leadership structure appointed after the elections will need to pay renewed attention to lowering current and future government debt. It’s common knowledge that this is intertwined with how SOEs perform going forward, particularly Eskom. The latest round of load-shedding has placed further uncertainty on the picture, so we can thank Moody’s for taking a longer-term view.

Speaking at the DLO Africa Power Roundtable 2019 in March, South African Minister of Energy Jeff Radebe said that the finalisation of the Integrated Resource Plan (IRP) is imminent, serving as a blueprint for the power sector.

“Cabinet approval of the IRP for South Africa will define a tangible plan for energy security that also secures

Advertising Sales Jenny Miller Tel: +27 (0)11 467 6223 Email: jennymiller@lantic.net ___________________________________________________

A division of Novus Holdings

Publisher Jacques Breytenbach Paarl Media (Pty) Ltd t/a 3S Media 46 Milkyway Avenue, Frankenwald, 2090 PO Box 92026, Norwood 2117 Tel: +27 (0)11 233 2600 Fax: +27 (0)11 234 7274/5 www.3smedia.co.za Annual subscription: R600.00 (INCL VAT) ISSN 0257 1978 IMIESA, Inst.MUNIC. ENG. S. AFR. © Copyright 2019. All rights reserved. ___________________________________________________ IMESA CONTACTS HEAD OFFICE: Manager: Ingrid Botton P.O. Box 2190, Westville, 3630 Tel: +27 (0)31 266 3263 Fax: +27 (0)31 266 5094 Email: admin@imesa.org.za Website: www.imesa.org.za BORDER Secretary: Celeste Vosloo Tel: +27 (0)43 705 2433 Fax: +27 (0)43 743 5266 Email: celestev@buffalocity.gov.za EASTERN CAPE Secretary: Susan Canestra Tel: +27 (0)41 585 4142 ext. 7 Fax: +27 (0)41 585 1066 Email: imesaec@imesa.org.za KWAZULU-NATAL Secretary: Ingrid Botton Tel: +27 (0)31 266 3263 Fax:+27 (0)31 266 5094 Email: imesakzn@imesa.org.za NORTHERN PROVINCES Secretary: Rona Fourie Tel: +27 (0)82 742 6364 Fax: +27 (0)86 634 5644 Email: np@imesa.org.za SOUTHERN CAPE KAROO Secretary: Henrietta Olivier Tel: +27 (0)79 390 7536 Fax: +27 (0)86 629 7490 Email: imesasck@imesa.org.za WESTERN CAPE Secretary: Michelle Ackerman Tel: +27 (0)21 444 7114 Email: imesawc@imesa.org.za FREE STATE & NORTHERN CAPE Secretary: Wilma Van Der Walt Tel: +27 (0)83 457 4362 Fax: +27 (0)86 628 0468 Email: imesafsnc@imesa.org.za All material herein IMIESA is copyright protected and may not be reproduced either in whole or in part without the prior written permission of the publisher. The views of the authors do not necessarily reflect those of the Institute of Municipal Engineering of Southern Africa or the publishers.

the participation of independent power producers (IPPs) side by side with Eskom and municipalities,” he stated.

The cost of rolling out the IRP leading up to 2030 is expected to be in excess of R1 trillion.

Within this context, growing the IPP renewables segment could make a valuable contribution to the power mix, while at the same time creating new jobs and skills in the wind and solar segments.

State of the civils industry The promise of new work will be welcome news for the construction sector, which continues to experience tough times. This is reflected in Safcec’s State of the South African Civil Engineering Industry Q1 2019 survey.

The report provides a realistic expectation of future activity based on global and local economic factors.

The South African construction sector continues to contract year-on-year, with some of the big names now in business rescue.

Liquidations increased by 8.7% year-on-year, as at January 2019, according to Stats SA, compared to an overall decrease of 5.1% for the South African economy as a whole.

Some 80.7% of survey respondents reported ‘quiet conditions’ and the balance ‘very quiet conditions’. On a more positive note, close to 83% of those surveyed expected profitability trends to stabilise, up from 69.8% in Q4 2018.

But the pool of work definitely needs to grow.

It all hinges on the accelerated roll-out of new infrastructure projects, and the creation of an enabling environment for foreign direct investment. In this respect, the start of the second phase expansion at the Dube TradePort Special Economic Zone north of Durban is welcome news. This will add 45 ha of industrial space and is anticipated to attract some R20 billion in investment inflows over the next five years. That’s the power of investment.

Alastair To our avid readers, check out what we are talking about on our website, Facebook page or follow us on Twitter and have your say.

struct www.infra

@infrastructure4

IMESA

urene.ws

Infrastructure News

magazine The official of the Institute Engineerin g of Municipal Africa of Southern

INFRAST RUCTUR

E DEVELOP

MENT • MAINTEN

ANCE • SERVICE

DELIVER Y

Cover opportunity

Go local with TM GRP pipe

FL OW TI TE s & Valve s Pipes , Pump Steel sector supports localisa

tion

Trenc hless Techn ologi esAvenue

Pipe cracking

in Bath

es Roads & Bridg needs Road funding a rethink

to the Rosslyn SEAT to be a was intended IN THE HOT N4 north of Pretoria created a rgboost was built, it is now industrial

Rustenbu N4, and ion of the sides of the route around The construct ents on both the current N4 l Manager, Bakwena area and when bordered by major developm Kganyago Commercia it’s .00 corridor. ” Solomon 19 • R50 bypass. Today, • April 20 a major economic 4 No.04 Vo l u m e 4 regarded as 8 0257 197 ISSN

In each issue, IMIESA offers advertisers the opportunity to get to the front of the line by placing a company, product or service on the front cover of the journal. Buying this position will afford the advertiser the cover story and maximum exposure. For more information on cover bookings, contact Jenny Miller on +27 (0)11 467 6223.

) ( i n c l . VAT

IMIESA April 2019

3

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HOW DOES SAND AFFECT YOUR IRRIGATION SUPPLY?

President’s comment

IMESA

The power of water Water has no clearly defined shape as a chemical composition, and yet it defines the way we function organically and, in terms of pure physics, it’s a powerful force we’ve learnt to harness as civil engineers.

T

raditionally, this has taken the form of dams, interconnected pipelines and reser voir systems, and equally sophisticated applications in terms of sewage and wastewater. Beyond extended drought intervention measures and the longer-term need to maximise catchment yields, we have limited control when extreme weather occurs, but that’s from a climate perspective.

Given full information on available scenarios, we can and do successfully design and build structures that will withstand 100-year storm events. For example, bridges built from steel and/or concrete, when correctly founded, will stand the test of time for centuries, and that extends to ancient stone masonry structures still widely evident across the world.

Roads too, when constructed in high-quality asphalt and concrete, will still be there once a storm passes, which equally applies to wellbuilt gravel roads when adequate elevation and drainage is incorporated into their design. The starting and end point is sound engineering. This helps to minimise severe flood events, which in future are anticipated to increase in frequency and severity. Cyclone Idai is a case in point.

Within towns and cities, IMESA is foremost in promoting interventions like the installation of sustainable urban drainage systems (SUDS) that control water velocity over hard sur faces. That lowers pressure on ensuing stormwater and downstream river systems, presenting excellent opportunity for capture and reuse.

Contamination and recycling

Randeer Kasserchun, president, IMESA

What enters our wastewater streams is equally important. Treatment works are under increasing pressure, experiencing spiraling process costs due to a range of foreign objects entering the system, which

include oils and chemicals illegally dumped into our sewer drains.

When it comes to potable sources drawn from rivers, high levels of biological contamination caused by industrial and untreated effluent pollution are another factor. The problem is widespread and needs national intervention and funding.

We should also not discount the threat caused by the indiscriminate dumping of solid household and industrial waste into rivers, particularly plastics, which will inevitably accumulate around weirs and bridges. Conventional structures won’t be that affected, but lighter ones – including interim rural community bridge links – will be, especially during high flood conditions, since their design was never intended for this load.

Ultimately, river waste ends up on our beaches and pollutes our oceans – and the problem is widespread. According to the World Economic Forum, more than 8 million tonnes of plastic waste enters our oceans every year. Around 90% of the source is derived from 10 main river systems – eight in Asia, and two in Africa, namely the Nile and the Niger. Responsible disposal, with an emphasis on recycling, is definitely among the responses needed.

These and other topics will form part of the debate at our upcoming 83rd IMESA Annual Conference in Durban during October 2019, where environmental interventions will be one of the central themes.

IMIESA April 2019

5

Cover story

Go local with Flowtite GRP pipe

F

lowtiteTM GRP pipe has been a household engineering brand since the introduction of this pioneering Norwegian technology in the 1960s. Owned by the multinational Amiantit Group since 2001, it’s a preferred choice for municipal infrastructure and general industrial users worldwide, with more than 70 000 km of FlowtiteTM GRP installed to date.

That’s supported by proven research, which shows a minimal record of leakage failures, and amazing durability and resistance to corrosion and chemical attack on original installations done more than 50 years ago. Samples taken show no visible change or deterioration over this period.

Local manufacturing licensee Flowtite South Africa was appointed by the Flowtite Group in 2018 to

TM

Lighter, and as strong as steel, but much more durable, glass-fibrereinforced (GRP) pipes can extend up to 4 m in diameter for applications that include major desalination projects and standard high-pressure bulk water supply. So, Flowtite™ GRP is far from fragile. The end benefit: over 150 years of vir tually zero maintenance.

spearhead domestic and broader sub-Saharan expansion, backed by funding from the Industrial Development Corporation. Investment in manufacturing is a major government objective and, in this respect, Flowtite is a 100% local content producer in line with Department of Trade and Industry guidelines and meets all SOE and municipal procurement stipulations.

Gearing up for growth, Flowtite is currently embarking on a R150+ million upgrade of its Germiston, Gauteng, factory. Integral to that strategy is a concerted communication drive to

Our vision is for FlowtiteTM GRP to be a household brand in the piping market within sub-Saharan Africa for civil, mining, agricultural and industrial applications.

Generally accepted and generally approved.”

inform private and public procurement decisionmakers about FlowtiteTM GRP benefits compared to alternative pipe systems made from steel, concrete or plastic. Key advantages of FlowtiteTM GRP include its ability to produce legendary strength with low material mass, making it easy to manipulate by hand or install with light construction equipment.

“In key markets like Europe and North America, FlowtiteTM GRP is a common application, and engineering students are exposed to and well informed about this technology during their studies. That’s alongside other conventional pipe alternatives,” explains Bantu Mselana, managing director, Flowtite South Africa. “That’s not the case for South African students.

“Although FlowtiteTM GRP has been part of the South African construction mix from 1992, the evidence of

COVER STORY

Technical specs Pipe diameters DN 300 to DN 1 800* Nominal pressure ratings PN 6-10-12-16-20-25-32 Nominal stiffness ratings SN 2 500-5 000-10 000 *Larger diameters available as imports Quality control Flowtite SA is licensed to produce pipes according to standards that include SANS 1748-1, AWWA C950, EN 1796, EN 14364, ISO 10639, ISO 10467, ASTM D3262, ASTM D3517 and ASTM D3754.

Testing: pipes and couplings Resin-to-glass ratio, hoop tensile strength, axial tensile strength, pipe stiffness, Barcol hardness, dimensional tolerances and a hydro test to twice the operational pressure.

FlowtiteTM GRP projects has been intermittent because of a widespread gap in both the understanding and application of the technology.

So, it’s understandable that many South African engineers will have had limited exposure, despite FlowtiteTM GRP’s universal specification on water and sewer projects internationally,” he continues. “We are here to change that and to reinforce the major benefits of FlowtiteTM GRP as a cost-effective and virtually maintenance-free infrastructure solution.”

Market engagement Flowtite South Africa is listening to the views and perceptions of the market, experienced engineers, contractors and other stakeholders in the public and private sphere, some of whom may have misconceptions about FlowtiteTM GRP, largely due to the absence of a single consistent brand owner and manufacturer, until now.

FlowtiteTM GRP has over 70 000 km of pipe installed worldwide in applications including bulk water supply, hydropower, seawater desalination, sewer networks, reticulation networks, irrigation water supply and many others, where the pressures range from PN 1 to PN 32. In South Africa specifically, more than 2 500 km of

Flowtite pipes are installed and in active service.

With 24 manufacturing plants across the globe, FlowtiteTM GRP pipe is increasingly becoming the technology of choice for many clients because of its hybrid characteristics that address the concerns experienced with other homogeneous piping materials.

As part of its repositioning of the technology in the local market, Flowtite South Africa will focus on expanding its cradle-to-grave services to ensure that its clients obtain maximum benefit from the use of its technology, as well as introducing new product lines that will offer superior value for its customers.

Over the past 30 years, FlowtiteTM GRP pipes have enjoyed significant growth, becoming an integral part of the infrastructure mix in South Africa. But key to sustaining this growth is ensuring quality, visibility, customer service, support and value for money. These are the areas that Flowtite South Africa is making significant strides in to achieve market growth.

Contractors and installation “It’s important to emphasise that, like with steel or HDPE, the inert materials themselves don’t guarantee the end result, which is

Key advantages of Flowtite GRP

Characteristic Corrosion-resistant Lightweight Standard lengths, 12 m Smooth bore Superior hydraulic characteristics Precision Flowtite REKA coupling

Flexible manufacturing process

Advanced technology pipe design

Advantage Long service life Low transportation cost and ease of installa-tion Fewer joints; reduced installation time Low friction loss; lower operating costs Low flow coefficient, minimal slime build-up and excellent abrasion resistance Tight joints designed to eliminate infiltration/ exfiltration; ease of joining reduces installation time; accommodates slight deflection without additional fittings Custom lengths and diameters can be manu-factured to provide maximum flow volumes with easy installation for slip-lining projects Multiple pressure and stiffness classes

chiefly dependent on the manufacturer. It’s all about proven R&D and precise quality control. In this respect, FlowtiteTM GRP meets all international standards, including the exacting ISO 9001:2015 specification,” Mselana continues.

“However, the world’s best products can only achieve their true potential if they are correctly applied. The pipeline water losses of over 40% in South Africa underscore this point. These failures are due to a combination of factors: incorrect installation, corrosion, age and a lack of maintenance. In contrast, once FlowtiteTM GRP is correctly installed, no further intervention is normally required,” he states.

Along with the roll-out of its product solutions, Flowtite is investing extensively in training. This encompasses consulting engineers, contractors, and operations and maintenance staff within municipalities. Common GRP myths that need to be dispelled include techniques associated with handling, misalignment and bedding, although these are not unique to GRP and occur with other materials like steel, PVC and HDPE. “FlowtiteTM GRP may seem futuristic for the South African market, but that’s clearly not the case since the product has been here in various shapes and forms for close to 30 years.

When it comes to upfront capex and longerterm operations and maintenance, FlowtiteTM GRP competes with and beats the best in overall performance and longevity. With the right training, it’s also very easy to install, making it perfect for SMME contractor development and broader community participation,” Mselana concludes.

www.flowtite.com

IMIESA April 2019

7

HOT SEAT

Bakwena and its community The Bakwena Platinum Corridor Concessionaire is a prime example of a successful toll road business that serves as an important catalyst for regional socio-economic growth. Bakwena’s new commercial manager, Solomon Kganyago, speaks to IMIESA about ongoing developments.

What’s your construction background?

SM As a civil engineer, I’ve always been passionate about roads. After graduating from the University of Cape Town, I spent my first five years at the Gauteng Department of Roads and Transport. This was followed by 11 years with Sanral Northern Region, where my last position was deputy regional manager. Applied experience in the construction and project management space has provided me with a solid foundation for my new role at Bakwena. I’m really excited about adding value in all areas, including transformation, stakeholder management

and corporate social investment. It’s all about delivering safe and sustainable road infrastructure.

How can you make a difference?

My personal goals are intertwined with Bakwena’s longer-term vision and comprise three core elements aimed at delivering a relevant commercial strategy. First, to establish brand clarity so that stakeholders clearly understand our role and what we represent as Bakwena: that we’re a toll concessionaire and not a mining company, or an NGO, even though we have ‘platinum’ in our name! Second, I would like Bakwena to be strategically driven. And third, and more critically, we need to be customer-centric. As a self-funded entity, toll fees are Bakwena’s single source of revenue, which places major emphasis on our ability to deliver exceptional service. Listening to the needs of road users and the N1N4 community has a direct bearing on where we need to revitalise and invest in the future network.

Bakwena’s current road mandate is 385 km. Are there plans to expand this?

Solomon Kganyago, commercial manager, Bakwena

Our scope, as a specialpurpose vehicle, is limited to the current network in terms of our contractual agreement with Sanral, which runs through to 2031. At that point, we are mandated to hand over the toll infrastructure to Sanral in a predetermined condition; however, as part of our internal commercial strategy, Bakwena

About Bakwena Bakwena manages the strategic N4 route between Pretoria and Botswana and the N1 heading north from Pretoria to Limpopo and the SADC region (particularly Zimbabwe and Zambia). Bakwena is also the central link within a freeway system interconnecting Southern Africa’s east and west coasts. From the east, the N4 toll route, operated by Trans African Concessions, stretches from Maputo, through Mpumalanga and Gauteng to Pretoria, where it becomes the Bakwena N4, ending at the Botswana border. There, it joins the Trans Kalahari Highway, traversing Botswana and linking up with the Port of Walvis Bay in Namibia.

is debating the possibility of other options beyond 2031.

What capital projects are planned for 2019?

Bakwena will be investing approximately R270 million in large capital projects in 2019, as part of our continuous maintenance and construction strategy. The resurfacing of the N4 west-bound carriageway between the R512 up to the Buffelspoort interchange was completed in February 2019 at a cost of R101 million. The R511 interchange project, valued at R55 million, will be completed in April 2019 and entails the provision of new west-facing ramps to improve traffic flows and road safety.

For the balance of 2019, we have two main projects. The first, awarded in mid2017, entails the reconstruction of the N4 in Groot Marico between Vaalkop and the

HOT SEAT

Swartruggens boundary, at a construction cost of around R250 million. The anticipated completion date is June 2019.

The second project entails the addition of a second carriageway on the N4, between the M17 and R512 (Brits interchange). Spread over a distance of 32 km, this 36-month programme is scheduled for completion in June 2021, at a project cost of some R582 million. This will establish a continuous dual-carriageway route extending from Pretoria, through to Brits and then Buffelspoort.

Does Bakwena invest in new construction techniques?

We benchmark our construction operations based on local and international best practices. This includes the recruitment, continuous training and development of our engineering personnel.

We expect our contractors to keep up to date with the latest construction equipment trends, since this passes on greater efficiencies in terms of time and cost. The issue of resource efficiencies is also top of mind when it comes to maximising the use of recycled materials, like road aggregates.

Once Sanral’s new Technical Innovation Hub has been established, this will also provide an invaluable pool of knowledge for us and the industry at large.

How does Bakwena contribute to macroeconomic growth?

Where roads are built, development follows and, over the years, Bakwena’s N1N4 network roll-out and maintenance strategies have certainly facilitated this. Once we’ve completed the dual-carriageway link between Pretoria and Brits, we plan to continue on to Rustenburg.

The construction of the N4 north of Pretoria created a boost to the Rosslyn industrial area and when the current N4 route around

Rustenburg was built, it was intended to be a bypass. Today, it’s bordered by major developments on both sides of the N4, and is now regarded as a major economic corridor.

Is the tariff structure adequate?

Yes, the tariff structure is adequate, and is used to finance continuous maintenance and construction works, cover operational costs and repay structured loans by 2031.

Bakwena has an excellent safety record. How has this been achieved?

We approach safety in two key ways: first, through engineering design and construction; and second, via safety awareness and simulated emergency incident training, working with local traffic authorities and SAPS emergency services. It’s a continuous process, as we find regularly new ways to improve driver behaviour and reduce the number of accidents.

Physical interventions include barriers to prevent U-turns on dangerous sections.

Please expand on bridge safety audits.

We have a panel of qualified bridge inspectors, which carries out a detailed assessment of each bridge every five years to determine defects like spalling, accident damage and the condition of expansion joints. However, remedial action and maintenance are carried out on identified bridges on an annual basis.

The most recent major refurbishment was a

complex project to reinstate the Groot Marico Bridge following flood damage and scouring of the bridge pier.

How important is community involvement?

This is central to our strategy. As part of the commercial strategy, we are busy finalising our stakeholder engagement policy. That includes our procurement initiatives in terms of transformation.

And the road ahead?

I’m fortunate to be working with a dedicated team of highly motivated and skilled individuals united in reaching a common goal to deliver quality road infrastructure over the remaining 12.5 years of our current contract. Over the longer term, we’d like to be part of the construction landscape after 2031. Let’s see what happens. Either way, toll roads will continue to be part of the country’s future transportation strategy on critical routes across South Africa, and they provide opportunities for public-private partnerships.

www.bakwena.co.za

IMIESA April 2019

9

83RD IMESA CONFERENCE

02-04 October 2019 DURBAN INTERNATIONAL CONVENTION CENTRE

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COMPANION TOUR Earn 2.5 CPD points by attending

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R1 100 per person

CONFERENCE ENDORSED BY

IMESA ORGANISER

THE INSTITUTE OF MUNICIPAL ENGINEERING OF SOUTHERN AFRICA (IMESA) TEL: 031 266 3263 DEBBIE OR MELANIE

Municipal Focus | JOHANNESBURG

Diphetogo – Getting Johannesburg working

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In an effor t to get the basics right, cur tail unnecessar y expenditure and prioritise projects, the City of Johannesburg introduced the Diphetogo Project to better deliver ser vices to its constituents.

abled in March 2019 and now out for public consultation, the City of Johannesburg’s proposed 2019/20 Mediumterm Budget is set at R65.6 billion for the 2019/20 financial year. This includes R57.3 billion in opex and R8.3 billion in capex.

The proposed capex projects will focus on addressing service delivery challenges and infrastructure backlogs such as the electrification of informal settlements, resurfacing and rehabilitation of the road network, and improving water and sanitation services through sewer network replacements.

The city’s 2019/20 Integrated Development Plan Review, together with the Mediumterm Budget, is focused on advancing the Diphetogo Project introduced in FY 2018/19. The project seeks to prioritise expenditure on pressing service delivery and infrastructure requirements.

In accordance with the Diphetogo Project, the percentage of the capital budget spent on basic services (roads, water, electricity, housing and transport) has grown from 58% in 2016/17 to 71% by 2019/20. Helping to fund this are proposed increases in the 2019/20 rates and tariffs: around 5.5% for property rates, 12.2% for electricity,

9.9% for water and sanitation, and 7% for refuse removal.

The electricity tariff increase was driven by the 17.1% increase requested by Eskom. This is expected to be reduced when the final budget is passed in May, in light of Nersa’s decision not to grant the request.

Securing the grid An increased electricity tariff may be a necessity considering the warnings the city has issued about the negative effect of load-shedding on City Power’s infrastructure.

“As one of the biggest utilities depending on power supply from Eskom, City Power is being IMIESA April 2019

11

severely affected by unprecedented loadshedding. The reality is that both financial and operational damage is being done, and this will be felt even after loadshedding stops,” says Cllr Nico de Jager, MMC for Environment and Infrastructure Services, City of Johannesburg.

He explains that the network takes extreme strain during the massive load-shifting and insurge that occur when Eskom restores power. The continual rebooting of power grids is therefore detrimental to the already aged infrastructure and will lead to an increased risk of failure.

According to De Jager, the maintenance backlog for Johannesburg’s power infrastructure sits at R170 billion. “This means that whenever it rains or restorations occur after load-shedding, the power system gets weakened and the depots are inundated with power outage reports,” he explains.

However, the city is reportedly working to ensure that resources are ready and available to address any challenges brought by loadshedding. Budgets have been allocated to ensure that maintenance backlogs are addressed and new bulk infrastructure is built.

Maintaining water infrastructure The city is also investing in its water infrastructure, with Johannesburg Water ramping up its preventative maintenance programme to help combat sewer blockages.

According to De Jager, the utility’s preventative maintenance programme has helped to clear over a million sewer blockages across the city in the last financial year. This was largely helped by the city’s procurement of three additional hydro-jetting vehicles used to clean the sewer network, bringing the total fleet to nine.

“The sizes of the jetting vehicles vary from the smallest with a jetting tank of 4 000 ℓ to the largest with a jetting tank of 12 000 ℓ. The jetting vehicles operate using a high-pressure water pump, able to generate up to 120 bar of water pressure at a flow rate of 300 ℓ/minute.

Depending on the nature of the blockage or the general condition of the network, different jetting nozzles are used,” he explains.

Annually, the blockage record is analysed to determine areas with a high blockage rate and based on that information the jetting truck will be deployed to those areas.

Harnessing the power of water Johannesburg Water has also commenced with the installation of in-pipe turbines as part of the City of Johannesburg’s Blue Economy programme, which is aimed at taking stock of the critical challenges the city faces. The installation of in-pipe turbines entails reducing minimum night flow and generating energy from the water flowing through the pipe system at strategic locations.

Similarly, the utility is harnessing its wastewater to generate energy as part of the Green Economy programme. There are currently three wastewater treatment works generating biogas via anaerobic mesophilic digestion. An additional three biogas projects are in the pipeline, which will ultimately reduce the utility’s electricity consumption, while supporting the environment and reducing greenhouse gas emissions.

These projects all feed into the idea behind the Diphetogo Project, which is real, transformational change. As Executive Mayor Herman Mashaba, stated: “Emanating from the Diphetogo Project will be the historic moment where, for the first time, government has partnered with our residents to begin the realisation of real, transformational change to get Johannesburg working.”

Roads & Bridges

Interconnecting KwaZulu-Natal Mount Edgecombe Interchange

The N2 and the N3 are the main focus areas for Sanral within KwaZulu-Natal. Over the next five to eight years, around R22 billion is earmarked for the N3, and in excess of R10 billion for the N2.

T

he N3 carries the highest percentage of freight in the country and provides a strategic conduit to and from the Port of Durban, which is said to be the largest and most active port on the African continent. The R103 (the old N3) is also a priority route and Sanral is in discussions with the KwaZulu-Natal Department of Transport concerning future upgrades.

Planned works on the N2 include the route north and south of the EB Cloete interchange, and the section leading to and from King Shaka International Airport, both of which currently experience major congestion at peak periods.

Other key routes include the N11, as well as the R61 linking up with the N2 Wild Coast project in the Eastern Cape.

“We’re excited about the approximately R3.5 billion stimulus package recently awarded to Sanral by the Minister of Transport, which provides us with additional funding alongside our present annual budget allocation,” says Dumisani Nkabinde, manager: Eastern Region, Sanral.

“The stimulus projects earmarked are ‘shovel-ready’ and will help to revitalise road

KwaMashu Interchange upgrade

construction nationally, as well as within KwaZulu-Natal. In terms of timing, the plan is to start publishing tenders from April and to begin awarding the first projects later in 2019.”

Maintenance priorities Around 76% of Sanral’s 22 000 km network is now beyond its 20-year design life, placing a major emphasis on maintenance interventions and upgrades to cope with rising traffic volumes. Sanral’s current mandate in KwaZulu-Natal is close to 2 000 km.

“There’s also an opportunity within our future plans to improve connectivity within rural KwaZulu-Natal towns. Examples include the connection between Ulundi and Pongola,” says Nkabinde. “We need to establish more direct cross-country routes and link them to the national road system. This will cut

down on travel time and boost local socioeconomic development.”

Assessing and responding to cross-border traffic going into Swaziland and Mozambique also forms part of Sanral Eastern Region’s longer-term strategy. The new MaputoCatembe Bridge crossing Maputo Bay is a prime example. With a span of around 700 m, this is believed to be Africa’s longest over-water suspension bridge to date. This imposing structure now cuts the travelling time between Maputo and Kosi Bay to 90 minutes.

Previously, the journey took up to six hours.

Sanral is monitoring traffic volumes on the R22, which is the main route north to Mozambique. As traffic volumes increase, towns like Manguzi on the R22 will certainly benefit. Sanral is currently progressing with a series of upgrades in Manguzi, where interventions include bicycle lanes and pedestrian walkways.

In line with the organisation’s transformation strategy, Sanral is also committed to supporting the development of SMMEs in rural areas.

Alongside this is a national education drive that provides full scholarship programmes at secondary level, bursary schemes for tertiary studies, and a pipeline for future employment in civil engineering.

Sanral’s Technical Excellence Academy in Port Elizabeth prepares candidate engineers for professional registration with ECSA via a structured mentorship programme.

“Working with our private and public sector stakeholders, Sanral’s mission is to build roads that empower communities,” Nkabinde concludes.

IMIESA April 2019

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Roads & Bridges

Road asset management: a simple approach Road infrastructure suppor ts the fabric of modern living, underpinning all modern economies. Unfor tunately, it is often taken for granted until something fails or no longer provides the anticipated ser vice.

R

oad infrastructure represents a major investment and, in a developing countr y such as South Africa, has to be built up, maintained and repaired progressively over time.

Anju Prabdial-Narsai, director, VNA Consulting, explains that, within this framework, pavement condition surveys play an essential role in pavement network management.

The pavement condition survey provides the most crucial information for pavement performance analysis and is vital for predicting pavement performance, envisioning needs and setting priorities for maintenance and rehabilitation, and allocating already limited funding.

Prabdial-Narsai points out that the most common cause of the failure of municipal road infrastructure is the neglect of routine maintenance and repair without delay. This often leads to other failures such as water penetration and consequent

14

IMIESA April 2019

erosion, resulting in the loss of portions, or the total loss in some cases, of paved surfaces.

Most of South Africa’s national routes and main roads are in good to excellent condition; however, the municipal networks are the opposite. “There is a growing proportion of deteriorating municipal infrastructure, and poor and often unacceptable service quality exists,” she says.

“In many municipalities, there are major shortcomings in management policies and practices. However, there are some municipalities that have exemplary practices in place in many aspects of infrastructure maintenance.”

The changing nature of road maintenance In the past, walking or driving down the road and collecting data manually was the only way to complete a pavement condition survey. This is a time-consuming, potentially dangerous, and highly subjective

technique of predicting the condition of a road (and each distress type) and deriving a service life/condition distribution at the network level.

“If condition predictions are biased, the subsequent analysis, treatments and optimisation results will deviate from reality, regardless of the methods applied. The result is fruitless and wasteful expenditure,” says Prabdial-Narsai.

It is, therefore, absolutely critical to efficiently and safely collect accurate and precise pavement condition data within a defined methodology.

Thankfully, the global trend over the past 20 years is a move towards semi- and fully automated condition surveying, due to the accuracy and ability to pinpoint failures.

Effective road maintenance Effective road maintenance requires the

Roads & Bridges

strategic distribution of limited resources to roads in exchange for the most benefits.

The main objective is to define maintenance strategies and tactics that reduce the long-term cost of maintaining the road network in an optimal condition.

To achieve this goal, there must be sound management practices and protocols in place to increase the likelihood of making the correct road infrastructure judgements. The strategy is simple: implement the right treatment, at the right time, for the right road.

Founded on the premise that the firm has an obligation to address the essential ‘triple bottom line’, especially in underserved rural regions of South Africa, VNA has been, and is still, involved in several projects in road infrastructure.

Apart from assisting the National Department of Transport to achieve the standardisation, integration and uniformity of road assets, VNA is actively involved at provincial level, assisting departmental teams in KwaZulu-Natal and the Free State. Projects include road and bridge condition surveying, road asset data collection and analysis, as well as actively participating in the design, development and construction implementation of road-infrastructure-related projects for the last 10 years.

Key to this is VNA’s state-of-the-art, nondestructive surveying technologies and software.

“At VNA, we believe automated pavement condition testing to be the way forward and in line with global trends. VNA had the foresight to acquire our first falling weight deflectometer trailer in 2009, paving the way for our extensive investment in sophisticated, state-of-the-art pavement strength-testing equipment, designed to significantly improve road maintenance solutions in this country,” says Prabdial-Narsai.

VNA predominantly uses the modularly designed Hawkeye system, which is scalable and customisable, while still delivering consistent and integrated data outputs.

This allows surveying equipment to range

from portable compliance profilers, to fully automated network survey vehicles, and highspeed deflection-measuring devices. Using the same system architecture across the Hawkeye range allows equipment to be supplementary and also interchangeable to suit clients’ project needs and deliver optimal project outcomes at maximum efficiency.

The latest development in VNA’s stable is the intelligent Pavement Assessment Vehicle (iPAVe) technology – a fully-integrated traffic speed deflectometer device (TSDD). The iPAVe is capable of scanning the bearing capacity of a road network at traffic speeds, thus minimising the need to use traditional stationary or slow-moving equipment such as an FWD or deflectograph.

Technology for road asset management Asset management has been widely accepted by the private sector worldwide and has been practised by transportation agencies in the developed world since the mid-1970’s.

There are countless reasons for the asset management approach to road infrastructure management, including limited funding leading to scarce budgets, technological advancements, lack of expert personnel, and public demand for better quality of service and accountability from the people in charge.

The collection, management and integration of data are critical parts of the asset management paradigm for its continued success. Timely, descriptive and credible data also provides information and form the basis for efficient and reliable decision-making.

A comprehensive dataset of inventory of road infrastructure assets and their respective conditions is one of the pivotal fundamental building blocks of any asset management system, and can prove its downfall. “The ‘what’ and ‘how’ became the fundamental and proverbial nightmare,” explains Prabdial-Narsai.

She believes that excessive data collection is probably one of the top five reasons road management systems are abandoned and failing. The technological equipment and software systems once seen as too

data-intensive and expensive to sustain have evolved with technological advancements like IoT and big data, enabling information to be transferred in real time, thus making analysis and review processes easier and shorter.

“Keep it simple. The management of road assets depends entirely on relevant, credible data. Since data collection costs time and money, the set of data should be limited to what is actually needed,” Prabdial-Narsai stresses.

Road asset management systems range from simple spreadsheets with decision matrices to complicated software that involves many data types. It is important to start with a basic road asset management system and progressively develop into a more comprehensive system that meets the needs of local government and the road network.

“Use the correct method to collect the required data. Municipalities need to realise time is of the essence and technologies exist to address and support the collection of the right data. However, municipal authorities must be wary,” she warns.

“Collecting data visually using mobile applications to fast-track collection does not take away the subjectivity. The misrepresentation that the outcome is similar to non-destructive radar or laser penetration borders on fraud and will result in biased condition predictions. Successive analysis, treatments and optimisation results will deviate from reality. With the limited funding and scarce available budgets, municipalities can no longer afford to have wasteful expenditure.”

Ultimately, a lack of knowledge about the physical condition of the assets makes it very hard for municipalities to clearly identify the funds required for proper maintenance at the required time. This must be rectified if South Africa’s road networks are to enable growth, mobility and contribute to economic prosperity, productivity and well-being.

www.vnac.co.za

IMIESA April 2019

15

Roads & Bridges

SA’s roads overlooked in 2019 budget South Africa needs a completely new approach to road funding based on paying relative to the mass of the vehicle and the distance travelled.

S

outh Africa’s 750 000 km road network is one of the pillars of our economy and should have featured prominently in the 2019 budget speech. This is according to Saied Solomons, president of the South African Road Federation (SARF), who says our road network is the 10th longest in the world, worth about R2 trillion and vital to South Africa’s economic prosperity.

“First, South Africa does not have a comprehensive road funding policy. I hope that the new draft policy, developed as far back as 2017, will fill this gap. Policy has to come before a budget, as the Minister of Finance himself emphasised. Right now, the funding of our roads remains inherently flawed in the absence of a policy to enable a road funding mechanism and administration that is acceptable to all stakeholders.

“The fuel levy increase – by 29 cents per litre for petrol and 30 cents per litre for diesel – is a far from ideal way to finance our roads. This levy taxes the poor at the same tax rate as the rich. Those who can afford newer, more fuel-efficient cars are paying less to travel the same distance than those who are less well-off and drive older vehicles,” he continues.

“Government is also losing revenue due to the continuous improvement in vehicle fuel efficiency. Many people are paying more road use tax through the fuel levy

South Africa urgently needs a tariff-setting mechanism that deals with congestion, as well as bad driving behaviour, for which the fuel levy is not suitable.”

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IMIESA April 2019

Roads & Bridges

They are also paying heavily in vehicle operating costs where roads are in poor condition. He stresses that South Africa urgently needs a tariff-setting mechanism that deals with congestion, as well as bad driving behaviour, for which the fuel levy is not suitable.

Cost of poor driving

than what their fair share of road use demands. With more electric vehicles on the horizon, the fuel levy would not be sustainable. It also does not consider road damage caused by the mass of a vehicle and, critically, it cannot be used as a tool to manage congestion during peak periods,” he explains.

Urbanisation Solomons says that Minister Tito Mboweni highlighted the rapid rate of urbanisation in South Africa, but did not stress roads

as being central to dealing with it. Twothirds of South Africa’s population live in urban areas: Gauteng is soaring beyond a population of 14 million. Plus the number of vehicles that people own in South Africa has doubled since 1994, with some 40% of these vehicle owners living in Gauteng.

With this enormous demand on South Africa’s roads, Solomons says that the funding available for the maintenance and expansion of the road network is not enough and road users are paying more and more in time due to congestion.

“The Road Accident Fund levy remains highly problematic. In 2017, the road accident bill, according to the Road Traffic Management Corporation, was some R142 billion and escalation of this figure has occurred since then,” Solomons explains. “But a significant portion of this money goes to the legal profession without benefiting the road user. Furthermore, this levy also doesn’t consider who caused the accident. Again, this means that reckless driving has little consequence for people who drive outside of the law.”

The SARF and Sabita initiated a road funding study with Stellenbosch University

Roads & Bridges

in 2017, which shows that accidents cost the countr y millions each year. “This places an unnecessar y drain on the fiscus and prevents other road priorities from being addressed,” says Solomons.

Solomons welcomes the R3.5 billion allocated to Sanral to improve nontoll roads over the next three years, but he says that this is simply part of Sanral’s mandate – to finance, improve, manage and maintain the national road network for South Africans and for the economy. “Worr yingly, this money does not address the serious backlogs in road maintenance that we have on our roads, which SARF calculated requires an additional R23.3 billion per year to address,” he says.

User-pay principle “I salute the Minister of Finance in promoting the user-pay principle and in encouraging South Africans to pay for ser vices and to pay their taxes. This, I hope, has set the scene to build understanding around a

user-pay principle that will counter the high levels of civil disobedience we are seeing in our countr y,” he continues.

“We need to develop a system of road pricing that varies by when, how much and where drivers use the roads. This should involve a tariff-setting mechanism that influences behaviour and helps manage road capacity.

“Public sentiment will be far easier to manage if we have a road-use charging system that is cost-effective, ef ficient, sustainable, equitable and well administered. Critically, charging for road use must be transparent so that all sectors of society, including ordinar y South Africans, know that government’s

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investment and road infrastructure spending is in their interests. Finalising the draft roads policy will go a long way in sorting out our road funding challenges,” he adds.

“Governments obtain the funds for roads mostly, although not exclusively, by way of general taxation, road-user levies and charges (including the fuel levy), and other taxes. Whether or not road funds are ring-fenced, a key consideration for any government transport infrastructure policy – but specifically for roads – should be that government’s investment and road infrastructure spending is in the public’s interest, and that the public is confident that this is the case,” Solomons concludes.

Roads & Bridges

Road resurfacing operations under way on a section of the N5 in Harrismith

UTPS proves optimal on N5

M

uch Asphalt’s Bloemfontein plant has successfully completed the supply of an ultrathin porous surfacing (UTPS) mix produced using new crumb rubber technology (NCRT).

This was delivered to Actophambili for a resurfacing project on the N5 in Harrismith.

“The UTPS functional layer was recommended by Much Asphalt as an alternative to milling and replacing a recently completed AE2 Medium sur face,” says Alex Weideman, regional technical manager: Inland, Much Asphalt. “Sections of the AE2 sur face had been rejected on rideability on the approval of the client, Sanral.”

NCRT, a warm mix alternative to conventional bitumen rubber, was the binder of choice due to numerous advantages: • Production and handling temperatures are relatively low (170oC at pumpable viscosity compared to conventional bitumen rubber at 200oC).

•R educed blending and production temperatures reduce the oxidative ageing of NCRT binder and hence enhance the durability of mixes. A Cantabro abrasion test performed on this mix showed a 3% mass loss. After induced moisture damage, a mass loss of only 11.5% was shown compared to the spec, which allows for up to 20% mass loss.

• NCRT blends do not continuously digest, as the handling temperatures are low.

Blends have longer shelf lives and are therefore more forgiving in cases of inclement weather and breakdowns.

• Due to a long shelf life, the binder supplier can blend the NCRT at its premises and send it to remote sites. This eliminates blending unit establishment costs, which is particularly attractive for small orders.

• The reduced handling temperatures save on the energy demand for mixing.

• The high viscosity of NCRT enables longdistance haulage with minimal binder drain-down, even for porous mixes,

which makes it a better solution than other modified binders with fibre for long haulage at elevated temperatures.

Thermal blankets The 4 900 t of UTPS was supplied to site over an average haul distance of 330 km. Due to the long haul, production commenced at 04:00 each morning. The mix was dispatched at 160oC and arrived on site at just over 140oC, five hours later, thanks to the use of thermal blankets.

With the cold winter ambient air of 5oC and temperature loss during tipping and transfer, the mix could still be compacted at 115oC without any cold clumps forming.

The mix was laid using a material transfer vehicle, super-paver (applying 0.6 ℓ/m2 to 0.7 ℓ/m2 of Coltack L) and static rollers.

“On completion, all sections were approved and some sections even qualified for rideability bonuses. Actophambili, Sanral and Much Asphalt are delighted with the outcome,” Weideman concludes.

IMIESA April 2019

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19

Geotechnical Engineering

Road reinforcement for Africa

S

ervicing the broader African market, Fibertex South Africa’s geosynthetic solutions are a core part of the construction mix, especially where erosion control is a prime consideration.

Meera Govender, technical sales engineer at Fibertex, recently presented on the subject at the 11th International Institute of Engineers Conference in Arusha, Tanzania. Her paper, entitled ‘Geosynthetics for road construction’, also tied in well with the conference theme – ‘The role of engineers in addressing climate change and opportunities’.

A spate of heavy floods has led to a number of key roads in Tanzania being washed away,

Meera Govender, technical sales engineer for Fibertex South Africa (centre in white shirt), with the Institute of Engineering Tanzania Board and guests from UNEP

specifying reinforcement geosynthetics for a roads project.”

The benefits of this design and product selection process result in project cost savings, reduced construction time and a long-term reduction in maintenance.

Fibertex UV-stabilised virgin PP geotextiles are the only nonwoven geotextiles produced in Africa with certification for durability of over 100 years (in accordance with the latest EN standards).

impacting on communities and the economy. To date, Fibertex has provided technical support and solutions for a range of interventions, which include the Arusha Bypass Road Project.

“Our presentation focused on various types of reinforcement geosynthetic products used to improve the layer works and ground conditions within paved and unpaved roads,” Govender explains. “We also highlighted the principles of geogrid reinforcement and design considerations that should be assessed when

“Leadership and innovation to preserve and enhance the value of the region’s roads within a rapidly changing world.”

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THOUGHT PROVOKING KEY-NOTE SPEAKERS REGISTRATION DEADLINE DATES Standard – 20 April – 31 August 2019 Late – 1 September – 10 October 2019 On-site – From 11 October 2019

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For more updates on CAPSA 2019, please visit our website on www.capsaconference.co.za or contact us: Scatterlings Conference & Events: CAPSA Secretariat: Charlene Tlhabane – Project Manager: +27 21 422 2402

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Environmental EnGINEERING

Steelwire protection for a changing world A revolutionary polymeric coating dramatically extends the life of Maccaferri’s hexagonal double-twist wire mesh products.

L-R: Adriano Gilli, GM and business development manager: Mining – Africa, Maccaferri Africa; Arno Welcome, Local Wire; Lungi Nyembe, Bazobona Supply Chain Management; Kenny Naidoo, Buyisela Civils; and Patrick Nobanda, Yebo Sales Wildcoast

much higher levels of wear and tear due to rising sedimentation, debris, pollution and chemical attack,” Zannoni continues. “Building in durability is vital, as the consequences of specifying the wrong wire system could lead to a rapid loss of mechanical strength.”

New supply chain model

M

accaferri Africa is phasing out its current PVC coating, with PoliMac® set to be the standard offering going forward. A key feature is PoliMac’s class-leading resistance to chemical attack, ensuring structural integrity in the most aggressive environments.

“As a group, our goal is to provide environmentally engineered solutions that are cost-effective, durable and reliable,” explains Adriano Gilli, GM and business development manager: Mining – Africa, Maccaferri. “The global launch of PoliMac is a prime example.”

PoliMac is a pioneering innovation designed to provide maximum corrosion resistance and mechanical performance, helping to combat environmental threats that include climate change and extreme weather.

Put to the test PoliMac achieves this by providing up to 10 times greater abrasion resistance compared to traditional polymeric coatings like PVC. During UV resistance tests, PoliMac outmatched conventional PVC in terms of tensile strength resistance and elongation: following 2 500 hours

of UV exposure, PoliMac’s tensile strength was more than 35% higher, while elongation performance at break testing was four times greater.

“When it comes to durability, selecting the right wire coating is important. Designers can choose between either a Class A zinc galvanised or a heavier-duty zinc alloy galvanised wire (known by its brand name, as Galfan). Galfan remains the best option in terms of lifespan when a secondary coating is not required. But when you design in marine and riverine environments, which are aggressive, a metallic coating combined with a polymer coating ensures that the longevity of both options is greatly extended,” explains Edoardo Zannoni, business unit manager at Maccaferri Africa.

As a general rule, non-PVC-coated Galfan wire should typically last around 50 years, and Class A zinc wire approximately half of that or less, depending on the environmental aggressiveness. However, with PoliMac’s unique polymer recipe and the metallic Galfan coating, a design life of up to 120 years is now achievable. This, of course, assumes that the correct design and installation techniques are used.

“Within the stormwater and river protection fields, research shows that today’s hydraulic structures are experiencing

To better serve the South African market, Maccaferri Africa has restructured its supply chain model and will now interface with customers via a network of either Level 1 or 2 BBBEE distributors. Locally, Maccaferri will continue to focus on manufacturing and engineering services. Gilli adds that this new distributor network will help to free up resources, enabling the group to increase its strategic penetration of the African market.

“We have selected companies with a proven track record in the environmental engineering field, many with past experience in applying the Maccaferri product suite,” Gilli explains.

So far, distributors have been appointed in Durban, Cape Town, East London and Port Elizabeth. A distributor agreement in Johannesburg is imminent and other appointments will follow nationally during 2019.

IMIESA April 2019

21

Pipes, Pumps & Valves

Firefighting pump innovation

W

ater volume and pump speed delivery are two of the most critical factors when it comes to designing fire suppression systems, an area in which WPIL Limited group company Gruppo Aturia delivers, with its Audoli&Bertola product line. These products comply with EN 12845, EN 12259-12 and NFPA 20 standards.

Audoli&Bertola also has the distinction of being the only Italian pump manufacturer to have obtained Factory Mutual (FM) system

approval for its diesel-driven vertical turbine and split-case horizontal pumps.

This well-known international brand is available locally via its fellow WPIL group companies, APE Pumps and Mather+Platt, both based in Germiston, Gauteng. “These pumps meet every conceivable application, from high-rise buildings to petrochemical plants, and the set-ups can be custom designed to meet specific site requirements,” explains John Montgomery, general manager, APE Pumps.

APE Pumps and Mather+Platt specialise in once-off pump designs, as well as providing standard OEM solutions. APE Pumps’ grading as a CIDB 7 ME contractor also enables the company to execute turnkey installations.

Audoli&Bertola’s vertical pumps range in capacity from 1 900 ℓ/minute to 15 200 ℓ/minute at 50 Hz and 60 Hz; and the split-case series from 2 850 ℓ/minute to 7 600 ℓ/minute at 50 Hz and 60 Hz. These can be powered by diesel, electric or gas engines. All pumps are certified to deliver IMIESA April 2019

23

Pipes, Pumps & Valves HORIZONTAL: Split-case type PDN-PD

Type PDN 150-300 L PDN 150-300 M PDN 150-300 H PDN 200-300 M PD 200-250 B

Speed (rpm) 2 100 - 3 550 2 100 - 3 550 2 100 - 3 550 2 350 - 2 970 1 460 - 1 900

Capacity (m3/h) 170 - 225 225 - 280 280 - 340 455 285 - 455

VERTICAL: Shaft, turbine type VAB

Type VAB 152 VAB 180 VAB 200 VAB 250 VAB 251 VAB 302 150% of the nominal flow at no less than 65% of head at the working point. Designs ensure that the shut-off head does not exceed 140% of the rated head.

A key advantage of Audoli&Bertola’s horizontal split-case-type centrifugal fire pumps is that they are relatively simple to operate and repair. “They are well suited for applications where water

supply is obtainable under a positive head,” says Montgomery.

Vertical designs Turbine-type centrifugal fire pumps have submerged impellers contained in a series bowl assembly at the bottom of a vertical shaft. They are FM approved for discharging water from lakes, streams, open

Speed (rpm) 1 480 - 1 770 1 481 - 1 770 1 482 - 1 770 1 483 - 1 770 1 484 - 1 770 1 485 - 1 770

Capacity (m3/h) 110 - 170 110 - 280 225 - 340 340 - 565 510 - 680 565 - 905

sumps, drilled wells and other equivalent subsurface sources.

For electric drive systems, FM-approved pumps must be used with a vertical, electric motor; while for gas or diesel, pumps must be connected to an FM-approved engine through an FM-certified, right-angle gear drive.

Pipes, Pumps & Valves

Steel pipe sector supports localisation The world’s leading economies leverage growth through intensive investments in manufacturing to drive innovation and growth in their home markets, which then become staging points for export leadership.

South Africa has the capacity and skills to be a major player in both respects. It starts with localisation. By Alastair Currie

W

ithin South Africa’s GDP mix, manufacturing currently sits in fourth place. It’s a vital sector that provides employment for 1 in every 10 individuals (or approximately 1.7 million employees).

The potential could be far greater, but that’s interdependent on a more bullish future outlook by domestic and foreign direct investors (FDIs).

Another integral factor is the way in which the Department of Trade and Industry (DTI) implements and manages our local content policies. Effectively implemented, localisation will ensure that imports don’t undermine South African industry, and it’s a sound approach adopted by many other countries, including the USA. Across the board, the steel manufacturing segment is a key contributor to most industrial processes, including construction and downstream infrastructure development.

Within this context, the steel pipe community is a vital contributor in fabricating and supplying bulk water and sewer pipelines, alongside other requirements like gas and petroleum.

As a forum, steel pipe fabricators and allied industry associations support government’s localisation drive but, like other sectors,

stress the need for clarity and transparency when it comes to tendering and procurement.

The DTI definition is clearly stated in SATS 1286:2011, published in November 2011.

Under definitions in section 2.3, local content reads as follows: • That portion of the tender price that is not included in the imported content, provided that local manufacturing takes place and is calculated in accordance with the local content formula.

• Local manufacturing means within the borders of South Africa, using South African labour, and all available resources.

• Only after local manufacturing has been verified are the individual components and their local/imported details calculated.

• This means that if a product is not manufactured within the borders of South Africa, it cannot qualify for local content stipulations, irrespective of where the raw material was sourced.

According to the DTI, its circulars are robust enough to militate against unintentional noncompliance. All government procurement is regulated by procurement policies and must adhere to the minimum thresholds for designated goods/products. The DTI states that only in the procurement of non-designated goods can agencies self-regulate; even then, the minimum threshold must be developed in concurrence with the DTI. Where raw materials are not locally manufactured, they can still be deemed as local and exemption can be awarded for importation.

Where non-compliance is reported, the DTI is

obligated to report this to National Treasury and the Auditor General. Thereafter, an investigation will be conducted and appropriate action taken where procurement rules have been violated.

Steasa viewpoint “The position of Steel Export Association of South Africa (Steasa) regarding local content is resolute and unequivocal: that such legislation as contained in a 2017 National Treasury instruction note is imperative for the survival of the steel tube and pipe industry, and the steel construction industry at large,” comments Keitumetse Moumakoe, executive director, Steasa.

“The building and construction sector typically accounts for one-third of all steel consumption; the designation of local steel content for state infrastructural projects goes a long way in diverting import orders back to local manufacturers and producers, strengthening the South African steel sector,” he says.

“The 2017 instruction note stipulated that when state procurement bids are considered, such bids must be advertised with the specific bidding condition that only locally produced goods, services or works or locally manufactured goods (with a stipulated minimum threshold for local production and content) will be considered. Several categories of steel products and components have been listed that must have a minimum local content threshold of 100% when participating in state tenders,” he continues.

Moumakoe points out that there are multiple benefits of adhering to local content stipulations in government projects: the resuscitation of an industry that is a key employer; the contribution to South Africa’s

IMIESA April 2019

25

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The designation of local steel content for state infrastructural projects goes a long way in diverting import orders back to local manufacturers and producers, strengthening the South African steel sector.”

reindustrialisation effort, as outlined in the National Development Plan; and the creation of employment.

“Eight years ago, Mumbai-based KLT Tubular and Automotive invested in a manufacturing plant in the Hammanskraal area, supplying chassis frames to Ford Motor Company Southern Africa. KLT also subsequently established a small bore tubing plant in Johannesburg, which exports to several subSaharan countries. This will be followed by a precision tube plant for US and EU exports, scheduled for completion in Q3 2019. This is indicative that South Africa is attractive for manufacturing FDIs, even with localisation policies in place,” says Moumakoe.

“The DTI is definitely helping to grow South African steel, but a paradigm shift from a primary to a more dedicated downstream focus is crucial,” he adds.

Comment from SAISC Adding his views, Paolo Trinchero, CEO, Southern African Institute of Steel Construction (SAISC), says his association has always stood for local manufacturing. “We began the journey of designation, or localisation, and downstream tariffs more than 10 years ago,” he explains.

“This was important, as we observed massive competition from exports in other steel markets and foresaw that it would be coming to our shores. Countries like Australia are a case in point where their steel industry has been reduced significantly over the last decade,” he expands.

“The state of steel construction is closely linked to the construction industry. To say it is in crisis is an understatement. In the

steel industry context, we typically rely on construction, manufacturing and mining. With all these sectors still experiencing difficulties, it makes the steel industry’s challenges all the more difficult. Government needs to address the issues holistically,” he continues.

“If the mining industry policy issues were solved, together with more incentives to kickstart manufacturing, construction will follow suit. This seems like a steep hill to climb at the moment. Perhaps significant external investment could help.”

The DTI’s requirement for value-added products and primary steel products is just one of many initiatives needed to reindustrialise South Africa. “The downside is that we weren’t able to take advantage of localisation during the good times. If we can keep our factories going and focus on competitiveness, we may be able to turn the situation around over the longer term. We must not forget South Africa’s imperative to create jobs,” Trinchero adds.

The SAISC, ASTPM, Polasa, Samcra and Sasfa have a programme in place to inform private and public sector buyers. Manufacturers also need to work with the DTI and SABS to make sure that all product compliance certificates are in place.

IMIESA April 2019

27

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Sustaining communities.

An attractive characteristic of PE100 piping systems is the creation of leak-free joints through heat fusion, which creates a joint that is as strong as the rest of the pipe. Ensuring on fulfilling the needs of the local potable water pipe market, for generations to come.

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Pipes, Pumps & Valves

The pipe polymer partner Safripol is a household name in the construction sector and its products are widely accepted as the high-density polyethylene (HDPE) hallmark for performance and durability in pipelines and other industries.

O

wned by JSE-listed entity KAP Industrial Holdings Limited, Safripol is a division of KAP Diversified Industrial, with manufacturing sites in Sasolburg, Durban and Piet Retief, and leads the market as a pioneering polymer producer. The production focus is centred in South Africa, supporting local demand from pipeline and allied plastics manufacturers, plus the broader African and overseas markets.

Currently, Safripol is the second largest polymer producer in sub-Saharan Africa.

Safripol is also currently the sole local producer of HDPE, PET and a variety of MFUF resins. Additionally, Safripol is a significant PP producer.

failure rates of all materials used for water systems.

“Further research by Safripol has resulted in improved processability and product properties for large-bore/thick-wall pipes for large volumes/high pressures, plus alternative installation techniques that cover trenchless applications like horizontal directional drilling and pipe bursting,” explains Mark Berry, sales and marketing manager, Safripol. “Trenchless technologies are among the best techniques for upgrading existing infrastructure, or going underground for the first time in an informal settlement, where removing established households to put in services is not an option.”

iMPACT 100 HDPE evolution The first HDPE pressure pipes in the industry were introduced in 1955 by a German inventor; then, many years later, PE80 was launched in 1977 as a more advanced product, featuring improved stiffness resistance to cracking.

HDPE polymer design and bimodal polymerisation technology have led to vast improvements in slow crack growth (or SCG) resistance and pressure handling. The knowledge of failure mechanisms and the limits under these conditions allow for a safe and reliable design of HDPE pressure piping systems with life expectancies exceeding 100 years (per ISO 9080 calculations). It’s also widely recognised that HDPE pipes have the lowest

Within Safripol’s extensive product mix, iMPACT 100® delivers across a broad range of municipal and industrial applications.

This pipe material, which conforms to the latest ISO standards, is composed of a black HDPE resin suitable for all dimensions of PE100 piping where transportation of potable water, irrigation, effluent, slurry and certain chemical substances is required. It has a high molecular mass grade with good impact strength; abrasion, chemical and UV resistance; and complies with the PE100 material requirements of ISO 4427:2007 and ISO 4437:2007. iMPACT 100 also underwent extensive testing according to the AS/NZS 4020:2005

standard ‘Testing of products for use in contact with drinking water’ and passed successfully. This standard prescribes methods of testing and compliance limits for the effects of a product on the taste and appearance of the water, the ability of a product to support the growth of aquatic microorganisms, and the quantity of toxic metals and non-metallic substances leached from the product when exposed to the test water. These tests were carried out by the Australian Water Quality Centre in Adelaide.

This standard meets and exceeds the South African national regulations regarding water safety. “iMPACT 100 is a consistently high-quality material and the preferred product for use in large-bore pipes up to 1.2 m in diameter,” Berry explains.

PE100 resin allows for higher design stresses and subsequently thinner walls when compared to previous-generation pipe materials. Adding carbon black to PE100 materials has also proven to be the most effective way of stabilising pipes against ultraviolet attack. Pre-compounding the material with carbon black also enhances the pipe’s mechanical properties.

“In summary, modern PE100 materials give designers and end users improved confidence and life expectancy in today’s challenging built environment.

And that’s backed by the Safripol brand,” Berry concludes.

IMIESA April 2019

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SAST T Trenchless News

Groundbreaking technology Ageing water and sanitation infrastructure is a growing problem faced by municipalities throughout the countr y.

Trenchless technology offers a cost-effective way to rehabilitate and replace ageing infrastructure with minimal disruption. IMIESA talks to Hannes Coetzee, director, CSV Construction, about the benefits of going trenchless.

What are the main advantages of using trenchless technology in the rehabilitation, replacement and installation of water and sewer infrastructure?

HC Using trenchless technology, and microtunnelling in particular, to install both water and sewer bulk pipelines allows you to manage and significantly reduce the risks often associated with conventional open excavations.

These include public safety, worker safety, risk of damage to other existing utilities, as well as the risks associated to the client’s programme and budget. It also provides solutions in cases where conventional, open-trench pipe laying would simply not be possible.

What is CSV’s scope of work within the field of trenchless technology?

CSV Construction offers microtunnelling with Herrenknecht AVN type MTBM machines for the installation of bulk service pipelines in most ground conditions, in various sizes for both pressured and gravitational

pipelines, at any depth and to very accurate tolerances.

Distances of up to 500 m can be achieved.

Our microtunnelling operation is further supported and enhanced by our ability to supply and install steel sheetpile shoring systems by means of high-frequency vibrating hammers or silent piling (hydraulic press) methods.

What are some of your notable achievements in microtunnelling and shoring?

To date, we have completed in excess of 2 000 m of microtunnelling in varying ground conditions, at lengths of up to 220 m, at depths of up to 20 m, and all to a tolerance of less than 15 mm both horizontally and vertically.

Our interlocking steel sheetpile shoring systems have been deployed to install various bulk pipelines and deep underground structures in heavily congested urban areas to depths of up to 9 m. This has been achieved in varying soil conditions with high water tables and even in marine wave and tidal zone conditions.

How do you harness the most up-to-date technology to deliver quality results for your clients?

Our equipment partner, Herrenknecht, is considered the world leader in AVN microtunnelling machines. AVN machines belong to the category of closed, full-face excavation tunnelling machines with a hydraulic slurry circuit.

Through constant collaboration with Herrenknecht, we are able to provide our clients with the right solution for the job. We also have long-standing relationships with a number of equipment suppliers in Japan, Singapore and Taiwan, to name a few, with whom we work closely on shoring applications.

What are some of the noteworthy municipal projects you have worked on?

We have worked on a number of projects for the City of Cape Town and Nelson Mandela Bay Municipality. The most noteworthy was the Cape Flats 3 Bulk Sewer Rising Main pipeline where a total of eight tunnels

Hannes Coetzee, director, CSV Construction

were completed, totalling 1 196 m. In a world-first application, 30 bar workingpressure ductile iron sewer pipes were installed via microtunnelling, leading to the project team being awarded the SASTT National Joop van Wamelen Award.

What advice would you offer municipalities who have not yet embraced trenchless technology?

With the rapid urbanisation of our cities, coupled with ageing infrastructure, there is an increasing need to install and upgrade bulk water and sanitation services. Trenchless technologies like microtunnelling offer a safe, cost-effective and low-risk solution.

We believe the innovative solutions offered by trenchless technology should be considered and incorporated by municipalities at the bulk water and sanitation master planning stage, and we would like to encourage municipalities to reach out and allow us to present this groundbreaking technology to them to enable better planning for their future projects.

IMIESA April 2019

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SAST T Trenchless News

Replacing the Bath Avenue water pipe The replacement of a water line on Bath Avenue in the busy Rosebank area required an innovative trenchless solution designed to overcome numerous challenges. By Marco Camarda*

T

he establishment of The Tyrwhitt, a mixed-use commercial and residential development on Bath Avenue in Rosebank, Johannesburg, required the upgrading of the water reticulation line servicing buildings on Bath Avenue.

The building contractor, Probuild Construction Group (PCG), began the water pipe replacement by commissioning a comprehensive ground penetrating radar (GPR) survey to locate the 100 NB (127 mm OD) steel water line running inside the carriageway of Bath Avenue. The GPR survey was used to locate the exact location of the steel pipelines, all lateral lines, erf connections, and other adjacent services adjoining and intersecting the steel water pipeline.

When the GPR survey was completed, it was found that the pipeline, which project

32

IMIESA April 2019

Project Team Main client: Johannesburg Water Trenchless client: Probuild Construction Group Specialist subcontractor: Trenchless Technologies cc Engineer: .kce Consulting

engineers .kce Consulting had originally thought was located on the sidewalk of Bath Avenue, was actually approximately 1.5 m into the carriageway of the road. This posed numerous problems to both PCG, who relied extensively on Bath Avenue as its main access to site for materials and equipment, and .kce Consulting, who had to come up with

a more innovative method of replacement of the steel water pipeline.

A trenchless solution After several visits to sites and a desk survey of numerous methods of working around replacement of the Bath Avenue steel line, the engineers eventually advised PCG to consider going trenchless. It was then decided that the 800 m long section of steel pipe was to be replaced by a trenchless method of pipebursting using a Terra Hydrocrack HC 600 S+ static rod pulling kit.

However, because the existing steel pipe was made of mild steel, and therefore very malleable, and buried only about 700 mm deep, conventional static rod puller cutting tools could not be used. Because of this, multiple trenchless contractors had turned down the R1 million project to replace the

SAST T Trenchless News

Project details Contract duration: 32 weeks Pipe-cracking duration: 6 weeks Contract value (VAT incl.): R2 million Length: 800 m Existing pipe: 100 NB Steel New pipe: 160 HDPE PE 100 PN 16

800 m section of pipeline along Bath Avenue from Jellicoe Road to Bolton Road.

The scope of the specialised subcontract works included supply and installation of a new 160 PE 100 PN 16 HDPE pipe, a temporary bypass piping with temporary connections to consumers during works, as well as reconnecting these connections on to the newly installed HDPE pipeline.

Trenchless Technologies cc took on the challenge and employed a steel roller cutter in order to cut open the steel pipe. However, it was important to avoid heaving of the tarmac surface during pipe-bursting due to the shallow depth of the steel pipe.

The roller cutters had to be inverted such that the splitting of the steel pipeline and displacement of soil material happened in

a downward, side-ways direction instead of upwards towards the surface of the tarmac.

This worked superbly.

PCG undertook all excavations for the launch and reception pits including lateral connections. It also had to arrange for water shutdowns with the affected Johannesburg Water (JW) depot, as the work could only be done in 100 m sections due to traffic

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SAST T Trenchless News

responsible for the removal, reinstatement or special protection of any buried or surface structures affected by the replacement works.

Overcoming challenges regulatory requirements from Johannesburg Roads Agency.

The arrangement and securing of these water shutdowns was always a challenging task as the 100 NB steel pipeline serviced reticulated water to the Mall of Rosebank, a number of hotels as well as key residential buildings in the Rosebank area. The JW depot, with its mandate to ensure continued water supply to all of these clients, had an extremely stringent shutdown regimen that could not be deviated from. Each shutdown could only last for a maximum of six hours. PCG was also

Due to the works being in the carriageway of a major route in Rosebank, health and safety was always a concern. As the main contractor, PCG was responsible to institute proper health and safety practices to ensure safety of the workers and the public. There were only a limited number of open excavations that could be left open on-site at any single point.

Another challenge encountered was the loss of pressure to water users dependent on the reticulation line during bypassing of the main steel line. While it is standard practice to bypass water systems arrayed into a ring-feed by blanking of the main steel line at the points

of intersecting streets, this did not always work. This was because of aged supporting water infrastructure in the ring-feed system as well as, in some cases, other buildings having very old or malfunctioning water fittings. As a result, blanking of the main line could only be undertaken under strict permissions from the JW depot.

Despite these challenges, the steel water pipeline has been replaced and the local water users along Bath Avenue are now enjoying the use of a newly refurbished water pipeline from what was a very difficult project. The use of trenchless methods of pipe-cracking proved to be less disruptive, cheaper and well-suited to the situation on Bath Avenue. *Marco Camarda is the general manager of Trenchless Technologies cc.

Trenchless Technology Specialist

Our range of services include: • Pipe Bursting • Horizontal Directional Drilling • Pipe Rehabilitation

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Water & Wastewater

The power Crucial to any water treatment plant in the 21st centur y and the Four th Industrial Revolution is the extended use of automation systems, with Scada being a crucial aspect.

A

of Scada

lthough many municipal sectors see automation as an unnecessary complication to water treatment plants, water treatment specialist QFS argues that knowledge and support are key. Leading the way in automation and process control for the municipal and utilities sector, QFS has 22 years’ experience with supervisory control and data acquisition (Scada) systems.

QFS offers ser vice level agreements and training with all its plants handling water and wastewater treatment as well as odour control. Additionally, the company has good relations with its South African automation suppliers that help to source replacement parts quickly and effectively.

Successful projects One of the many sites where QFS has successfully utilised Scada is the V&A Water front desalination plant in Cape Town. Here, Scada provides information reporting structures that can inform the municipality of the potable water quality.

Furthermore, QFS still plays a key role at South Africa’s ver y first reuse plant in Beaufort West, Western Cape, constantly monitoring the installed facility using Scada systems and assisting the end user with fault finding and water quality

management. Trained technicians still regularly visit the site to assist in training operating personnel on the maintenance and operation of the plant.

The continual monitoring of plant per formance is also under taken at a wastewater reuse facility in Ballito, KwaZulu-Natal, where QFS assists the client with training and operational support.

The installed Scada system empowers the end user with data that contributes to their knowledge and understanding of reuse plants, and assists in training new plant operators.

In addition, the end user at the De Doorns water reuse facility in the Cape Winelands has been given an effective Scada system that allows them to quickly assess plant issues and that can help them address these issues with accuracy and efficiency.

Improved safety A final important aspect of Scada is safety.

The automation and controls that QFS implements on its Scada systems ensure that end users are protected from harm.

The programmers take safety seriously and QFS’s systems are programmed to ensure that the operator has peace of mind and protection, so that they will always be working in a safe environment.

IMIESA April 2019

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Consulting Engineers

Ensuring professional, ethical infrastructure services

Consulting Engineers South Africa, together with industr y stakeholders, interrogated the issues and challenges facing the both engineering sector and the county at large at the 2019 instalment of the CESA Infrastructure Indaba.

A

chieving value for money in the delivery of infrastructure was a core focus at the 8th Annual CESA Infrastructure Indaba.

“Our voice – in recommending and suitably driving improved planning, design and procurement practices for consulting engineering ser vices related to the development of infrastructure, making sure that the citizens of South Africa get value-for-money infrastructure that is safe and designed to stand the test of time – must be heard,” Neresh Pather,

president, CESA, told delegates at the conference. These sentiments were echoed by many of the government officials and industry stakeholders who presented at and engaged in debate at the indaba.

Procurement done right Pather placed an emphasis on creating industr y awareness and supporting clients with procurement, planning, capacity and technical competence while focusing on valuefor-money infrastructure development.

The economics of infrastructure Speaking on infrastructure investment, David Metelerkamp, senior economist, Industry Insight, painted a bleak picture of the current state of infrastructure and construction in the country.

Metelerkamp argued that the civils industry has been in a recession since 2014, noting the “demise of the big contractors”, which have lost more than 70% of their value over the last 10 years. Confidence in the civils sector officially hit rock bottom in Q4 2018.

“Reforming our state-owned entities is crucial for the transformation of the construction sector, noting that the restructuring of Eskom is a step in the right direction,” he said.

36

IMIESA April 2019

Applauding President Cyril Ramaphosa’s commitment to dialogue and working together with the private sector, Pather noted that all par ties need to take ownership and accountability for the future, focusing on ‘doing what is right’ through effective, ethical leadership.

He also called on government to set up a Presidential Advisory Committee of Infrastructure and Built Environment Experts to ensure value-for-money procurement, as the current practice of lowestcost procurement of professional consulting engineering services is not working.

“Quality-based selection is global best practice for the appointment of consulting engineers. The open tender process unfor tunately creates opportunities for abuse through the appointment of companies without track records who are unable to deliver – and creates opportunity for ‘tenderpreneurship’ and corruption,” noted Chris Campbell, CEO, CESA. In line with this, Ishmail Cassiem, manager: Construction Industry Performance

Consulting Engineers

“Reforming our state-owned entities is crucial for the transformation of the construction sector, noting that the restructuring of Eskom is a step in the right direction.”

David Metelerkamp, senior economist, Industry Insight

“Quality-based selection is global best practice for the appointment of consulting engineers. The open tender process unfortunately creates opportunities for abuse.”

Chris Campbell, CEO, CESA

“It is the CIDB’s view that contracting organisations need to demonstrate that they are implementing anti-corruption measures within their organisations and that their business practices are ethical.”

Ishmail Cassiem, manager: Construction Industry Performance Programme, CIDB

“The revised Identification of Work is aimed at providing for an amendment to government legislation… making it likely that it will become mandatory for practitioners in the built environment professions to register with their respective councils.”

Pieter Fourie, manager: Regulations and Legal Services and acting company secretary, CBE

Programme, CIDB, noted that contracting organisations need to demonstrate that they are implementing anti-corruption measures within their organisations and that their business practices are ethical.

The CIDB is currently consulting on possible changes to the CIDB registration criteria for the Register of Contractors to include a mandatory requirement for registration for

anti-bribery management systems for grade 9 contractors.

Advocate Pieter Fourie, manager: Regulations and Legal Services and Acting Company Secretary, CBE, added that the revised Identification of Work is aimed at providing for an amendment to government legislation in respect of professional registration. As a result, it will likely become mandatory

for practitioners in the built environment to register with their respective councils.

Campbell concluded, “We are unapologetic in our belief that the South African public deserve the best and most competent professional service providers and anyone wanting to play in this space must fit this profile and be committed to growing a respected and sustainable industry.”

Ramaphosa’s infrastructure fund Talking about the infrastructure fund announced as part of Ramaphosa’s economic stimulus package, Metelerkamp stated, “Treasury wants to step up its infrastructure build programme – partnering with the private sector, development banks and development financing institutions to create this fund. But legislation still needs to be passed to facilitate the process, added to which National Treasury is very short on specifics regarding this infrastructure fund.”

Although the fund is a step in the right direction, Metelerkamp argued that we will only see results in the longer term. He concluded by stating that, although there are some signs of private sector activity, there is no big turnaround expected in the construction sector anytime soon.

IMIESA April 2019

37

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Risk Management

Copyright law

for built environment professionals In our increasingly hyper-connected world, seemingly unrelated events can have a profound impact. It’s crucial for professionals to stay informed and one aspect to consider is copyright and how it applies to consulting engineers, designers, architects and the like. By Samantha Varela*

C

opyright law in South Africa is governed by the Copyright Act (No. 98 of 1978). The Act provides protection against the unauthorised copying or reproduction of certain ‘works’. Infringements of intellectual property (IP) or copyright are also dealt with in the Act and the main remedies that can be sought to obtain relief are an interdict and an award for damages.

Where does copyright vest?

Copyright generally vests in the author of work, except where the work is made by the author in the course of his/ her employment, in which case the employer is usually the owner in terms of the contract of employment. For this reason, copyright vests in the professional practice or firm and not in the actual employee who created the document or drawing.

A client may use the copyright or IP for the sole purpose of a project for which they have remunerated the service provider that created it. Ownership of the IP, however, still vests in the

service provider, unless the agreement with the client stipulates otherwise.

The work, designs or presentations of built environment professionals such as consulting engineers, designers and architects often include design viewpoints and draft designs. Although a client may be entitled to the use of copyright on the project for which they remunerate the professional, certain clients may attempt to use such principles and designs improperly to their own advantage while they undertake the work

themselves and/or re-invite tenders based on these ideas of the professional.

A practical example Let us take a look at a practical example. An architect and engineer put together the designs for a residential complex. The client and/or developer pay for the designs on that specific project and are entitled to the use of IP for that specific project. The client then uses said designs for various other complexes without purchasing the copyright or IP from the professionals. The problem is twofold: • The professional is at risk of being sued in terms of their designs for projects they weren’t even aware of.

• The professional is not remunerated for the use of their IP.

How do you protect yourself?

Where the copyright is required by a client, it is recommended that the agreement between the client and professional contain a provision to the following effect: “The Professional shall not be liable (whether in contract or in delict) to the client or any

IMIESA April 2019

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Risk Management

other party whatsoever as a result of the use of the consulting engineers’ designs, drawings and specifications in any project or works other than those for which they are intended, detailed in this agreement, and the client hereby indemnifies the professional against any claim which may be made against him by any party whatsoever in any way arising out of the unauthorised use of such documentation for such other purpose as aforesaid.”

Professionals are also suggested to indicate that they should be adequately remunerated for their services before IP ownership passes to the client. This provision could be as follows: “The Client retains the design rights and other intellectual property rights of all documents prepared by the Consultant upon full payment for the Services to the Consultant. The Consultant shall be entitled to use them and copy them only for the Project and the purpose for which they are intended, and need to obtain the Client’s permission to copy for such use.”

Professionals are advised to mark documents to the effect that copyright subsists in such documents. Suitable wording would be as follows: “Copyright vests in this document/drawing and no use or reproduction or duplication thereof may occur without the written consent of the author.”

In addition, the name of the copyright owner and the year in which the copyright came into existence, should be stated, e.g. “©Topside Engineering (Pty) Ltd. 2017.”

Copyright and your insurance cover Not all professional indemnity policies have the same wording and may contain a clause similar to the one below that may cover the insured’s breach of copyright subject to the terms and conditions of the policy.

“The Insurers will indemnify the Insured for any claim or claims first made against the Insured during the Period of Insurance by reason of any inadvertent disclosure of the confidential information, or any inadvertent infringement of any patent or copyright or the inadvertent unauthorised use or inadvertent infringement of the systems or designs of others.”

It is important to keep in mind that your IP as a professional can be considered as a valuable asset to your business. As there are certain associated risks with the same,

What some of the standard form agreements say about copyright PROCSA The consultant retains copyright of all documents and/or designs prepared by the consultant for the project. The client has the right to the use and the benefit of the documentation produced for the sole purpose of its intended use on the project, subject to compliance with the terms and conditions of this agreement.

The client is entitled to all data and factual information collected by the consultant and paid for by the client.

CIDB Copyright of all documents prepared by the service provider in accordance with the relevant provisions of the Copyright Act relating to the project shall be vested in the party named in the contract data. Where copyright is vested in the service provider, the employer shall be entitled to use the documents or copy them only for the purposes for which they are intended in regard to the project and need not obtain the service provider’s permission to copy for such use.

Where copyright is vested in the employer, the service provider shall not be liable in any way for the use of any of the information other than as originally intended for the project and the employer hereby indemnifies the service provider against any claim which may be made against him by any party arising from the use of such documentation for other purposes. The ownership of data and factual information collected by the service provider and paid for by the employer shall, after payment by the employer, lie with the employer.

The employer shall have no right to use any documents prepared by the service provider while the payment of any fees and expenses due to the service provider in terms of the contract is overdue.

FIDIC The consultant retains copyright of all documents prepared by them. The client shall be entitled to use them or copy them only for the works and the purpose for which they are intended, and need not obtain the consultant’s permission to copy for such use.

NEC No provision provided.

the necessary precautions and wordings should be considered.

Proactive risk management is a vital business tool and is a process that is best undertaken with the aid of a specialist insurance broker and legal risk consulting service. Having professional legal assistance for insured businesses as well as small, medium and large professional practitioners will greatly aid in assessing your risk profile. It will also help to benchmark you against your peers, both locally and internationally, ultimately having a positive effect on managing any potential risks. *Samantha Varela is a legal risk advisor at Aon South Africa.

IMIESA April 2019

41

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SAFETY

WEAR IMIESA April 2019

43

Waste Management

Barriers to managing hazardous waste in Africa Discussions of hazardous waste in Africa all come down to the same issue: how to get from an essentially unregulated situation to a well-regulated system with adequate commercial waste management capacity. By Randy M Mott*

T

o some degree, the prevalence of open dumping of municipal waste masks a possibly larger problem. As rules tighten, the incentives to avoid or ignore the rules grow. The plethora of new hazardous waste rules in Africa creates huge incentives for non-compliance.

These incentives reach a crisis level when there are few or no legal alternatives within many African countries and the ability to export the waste to better facilities in other African countries is overly restrictive. We will likely find that the literal mountains of municipal waste in open dumps have provided a low-cost – if illegal – option for hazardous waste dumping. Vast territories and limited enforcement capacities in Africa also make the prevention of direct dumping of hazardous waste problematic.

It is easy to list the deficiencies and recite how they need to be corrected, but what is missing in the public narrative is a serious discussion of specific solutions to the critical barriers to improvement. The most crucial reality underlying possible solutions is that it is easier to legislate than build.

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IMIESA April 2019

The new series of aggressive rules are on the books in most African countries affecting the domestic management of hazardous waste and its export. The rules to date have outstripped the physical capacity for compliance. In the USA, we described that type of environmental regulation as technology forcing.

In Africa, we do not see the necessary level of effort to develop the technical capacity for meeting the current rules or the new rules often being cut and pasted from laws of industrial nations, such as the waste hierarchy and landfill bans.

As we discuss how to transform the hazardous waste management system in Africa, understanding the underlying economics, the financial impacts of compliance or noncompliance, and which parties need to have their economic motivation incentivised is the key element. Failures in the current efforts are normally caused by misunderstanding these underlying dynamics.

Basel Convention leakage The Basel Convention and then the Bamako Treaty have imposed tight restrictions on the transboundary movement of hazardous wastes. The latest version of Basel and the Bamako Treaty make it illegal to transport hazardous waste from OECD countries to Africa. The initial problems arose in the 1980s precisely because of government regulation in the OECD. The cost of compliance was vastly increased and the pressure to find alternative,

Waste Management

illegal means to handle the wastes created the market of the so-called toxic traders. This proved difficult to manage until the avoided cost of compliance was reduced by the growth of commercially viable means of compliance back in the OECD. Public relations disasters and economic damage claims in Africa also helped tip the balance.

It is still important to enforce these restrictions and one of the key problems is the definition of hazardous waste. The Basel Convention definitions are frequently different than national definitions, even within the EU. This problem has received widespread attention and is being addressed as it should be.

The unintended consequences of the Basel and Bamako restrictions is the problem of what to do with hazardous waste in African countries that lack the means for legal compliance and certainly lack commercially viable compliance options.

Seen in this light, the problem is really how to develop the commercial capacity to meet the current and evolving rules. Making legal compliance physically possible and financially viable is the key to fixing the problem.

What causes the lack of commercial infrastructure?

While there is literally hundreds of billions of dollars in equity investment and debt capacity in the global economy seeking green investment projects, there are no adequate international not-for-profit funding sources to deal with the African waste infrastructure problem. However, adequate commercial funding is potentially available, but has not occurred in most cases in Africa. Why?

Private investment by equity funds or large industry players seeks return on investment.

How does one create a commercially viable market for improved hazardous waste management? I think that there are only three main elements: 1. Create the rules that divert the waste from other disposal options.

2.

Assure the commercial viability of the investment in the compliance alternatives.

3. Enforce the rules.

IMIESA April 2019

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Telephone:+27 (0)21 982 6570 Fax:+27 (0)21 981 0868

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Landfill Closure Leachate Treatment Regional Waste Studies PPP Involvement in Waste Management Alternative Technologies for Waste Reduction Integrated Waste Management Plans

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45

Waste Management

Steps toward a solution Step 1. A key solution is vital to make the ‘prior informed consent’ provisions of Basel actually work. My proposal is to create a third-party entity that conducts waste facility reviews that are available to both the exporting and importing country’s government officials.

Following commercially proven procedures, this would allow for the best possible information to be considered in approving exports and raise the confidence level in those decisions.

This can be financed once in place by fees charged to the parties seeking the

approvals. An internationally funded training programme for understanding and using the reviews would be essential. It would also provide the side benefits of training regulators on risk management issues that would build expertise in permitting and enforcement, not simply in approval of shipments.

Step 2. Specific Bamako provisions on the need to approve every shipment separately may create a permanent barrier to the creation of regional markets in some countries. This needs to be reinterpreted or revised to allow approval ‘by rule’.

Step 3. Right now, a major step could be taken by simply requiring all Basel signatory nations in Africa to provide a list of licensed hazardous waste facilities on a public platform, including a description of their operations and what wastes they are licensed to manage. This would at least create a ‘rolling’ list of options for hazardous waste producers to consider as they face growing regulatory requirements in their individual African locations.

Step 4. To assure that hazardous waste is actually delivered to the intended waste

management facility, waste producers should require their contractors to provide an electronic manifest tracking system. This would provide a straight-forward online method of tracking the waste shipment, just like we do with private internet orders and Uber drivers.

Final thought There is no simple fix and certainly no way out of the situation without a real dialogue on the key parts of the problem. Contrary to the popular culture, most international companies have strict rules on the management of their production wastes, which often exceed local legal requirements. Many of these firms operate in Africa and should form the basis for a new waste economy that moves infrastructure in the direction of better environmental and health practices. *Randy M Mott, JD is a graduate of Georgetown University Law School, Washington DC, and has been involved in hazardous waste issues in the US, EU and Africa for over 30 years. For more information, contact randymott@envirosolutions.co.

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The core issue that has been mostly unaddressed is why inadequate investment incentives to build this capacity already exist.

Most African countries do not produce enough hazardous wastes to be a commercially viable market. As the demand for more elaborate treatment and recycling technologies rises, this becomes more acute. Since compliance depends upon economically feasible alternatives, the need for commercial scale of operations is even greater.

Cement & Concrete

For traditional loading applications – such as creating water ways below roads, trails or even drainage channels – Rocla’s standard rectangular portal culverts are the preferred solution. These range in size from a span of 450 mm to 3 600 mm, and heights from 300 mm to 3 000 mm. The strength classes for these culverts are 75 S, 100 S, 150 S, 175 S and 200 S.

Load and flow

A

long with precast, customdesigned culverts for onceoff projects, Rocla offers two distinct product ranges, differentiated by the type of loading requirements. Both are available with associated precast base slabs.

For heavy loading applications, such as the provision of a water way below railway tracks, Rocla’s SATS SAR rectangular portal culverts can be used. These, and

Wingwalls

custom units, are also employed in any application with excessive fill requirements – e.g. a culvert tunnel at the base of the fill zone designed to enable either conveyor or vehicle access.

Standard SAR culverts are supplied in lengths of 1.22 m and designed for up to 10 m of fill. Culver ts required for loading heights greater than 10 m are handled individually and designed in-house

by Rocla.

Rocla’s precast wingwall units can be used at both the inlet and outlet of any channelled system, making use of circular or rectangular portal culverts for stormwater applications.

Since the natural upstream path is often wider than the culvert or pipe structure, transition sections are required to receive and direct the flow. The same is true for the downstream end. Here, precast concrete wingwalls are highly effective in countering erosion and promoting smoothflowing water.

IMIESA April 2019

47

RETAINING VALUE Technicrete has developed innovative, environmentally sound & cost-effective retaining wall solutions for multiple applications.

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Cement & Concrete

Bryan Perrie, managing director of The Concrete Institute

How to handle hot weather concreting

T

Summer’s high temperatures can cause problems with concrete placement and finishing, so it’s important to take precautions. Bryan Perrie provides some key guidelines.

he first option to be considered in exceptionally hot weather conditions is whether to postpone the placement of concrete. It is often better to wait than risk costly repairs, or even replacement of defective work and dissatisfied clients seeking compensation.

If work is to proceed, proper planning – ranging from careful selection of materials to procedures for hot weather work – is essential if risks are to be minimised.

Planning for hot weather conditions is essential because of the potential effects on fresh and recently placed concrete. For plastic concrete, these include increased water demand and the risk of plastic shrinkage cracking, greater slump loss, faster setting and difficulty in controlling entrained air content. For hardened concrete, the risks include lower strength, reduced durability and increased dr ying shrinkage.

Because aggregates can be the hottest part of the mix, they have the greatest effect on the initial temperature of the freshly mixed concrete; however, the temperature of the aggregates is difficult to control. It may help to shade stockpiles from the sun and keep them wet with sprinklers and cold water, but keeping aggregates cool is not an easy task. The mix water is easiest to cool, particularly by adding crushed ice to it.

The temperature of the cement does not usually contribute much to the temperature of freshly mixed concrete because of its low specific heat and relatively small mass in the mix. Liquid nitrogen, injected into the concrete while mixing, may be useful. Latent thermal energy on vaporisation to gas can cool the concrete substantially without adversely affecting the treated concrete. However, this

The water component of a concrete mix is the easiest to cool during hot weather concreting: simply add crushed ice

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IMIESA April 2019

process is usually economical only on major projects involving construction of large concrete elements.

Countering cracking Adding some admixtures to the mix can help in hot weather conditions. Water reducers (plasticisers) will reduce the water content and aid workability. Set-retarders can provide more time to place and finish flatwork, but beware: the retarders can make the surface look ready for finishing, but the concrete below may still be plastic from the retarder.

This can lead to cracking of the finished surface and affect the uniformity of the surface finish.

Selection of a particular cement type may also help. Slower hydration cements with a lower rate of heat development can provide extra time for placing and finishing, while reducing the concrete temperature and the risk of thermal cracking upon cooling of the concrete. Painting silos and readymix trucks white or silver can also help reduce concrete temperatures.

In hot weather concreting, problems can arise when site personnel are not aware of the effect of weather conditions, or if weather conditions change during the placing and finishing of the concrete. The builders and subcontractors should be ready for all possibilities: when hot weather conditions are likely, consult the concrete supplier as early as possible. It will also be useful to have

Cement & Concrete

As concrete will set more rapidly and have a shorter finishing time in hot weather, perform all operations rapidly – but be sure not to finish slabs prematurely standby equipment and manpower for all stages and use the largest size and amount of coarse aggregate possible for the job.

Slumps In determining the slumps of the concrete, consider scheduling concreting for the cooler parts of the day, or even for night placement, if possible. Plan the locations of construction joints ahead of time with hot weather contingencies in mind, and consider spacing contraction joints at slightly smaller intervals than when concreting at lower temperatures.

Even consider using sunshades or windbreaks and the use of high-pressure mist sprayers during the placing of slabs on the ground or for pavement construction.

As concrete will set more rapidly and have a shorter finishing time in hot weather, be sure to perform all operations rapidly – but don’t finish slabs prematurely, such as while bleed water is still on the surface.

It is essential that all surfaces be kept continuously moist by curing the concrete. As drying, even when intermittent, can produce drying shrinkage and crazing-type cracking on the concrete surface, curing should start immediately after the slab has been finished, and is particularly important during the first day after placement and in hot or windy conditions.

Among the best ways to counter hot weather concreting’s threats is to consider night placement, if possible

Curing methods include ponding with water, the use of wet hessian or cotton mats, continuous spray mist, covering with plastic sheeting or spraying on curing compounds.

Adequate curing of the concrete must still be provided once final finishing has been completed.

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83RD IMESA CONFERENCE

02-04 October 2019 DURBAN INTERNATIONAL CONVENTION CENTRE

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Cement & Concrete

Simplified flooring

M

apei South Africa has developed a new range of cementitious self-levelling compounds and other surface preparation products, which makes the task of correctly preparing floors simpler and faster.

“Whether a job requires exact levels for the installation of specialised floors, such as vinyl, or is required to provide a smooth sur face over the top of existing flooring or as a final finish, we have developed the right products to get the job done,” says Ross Creasey,

technical services manager at Mapei South Africa.

Products like Mapei’s Ultraplan Eco (with its 29 MPa compressive strength) are sealed and left as a final finish with a smooth natural concrete look. With the use of the right primer, such as Mapei’s Eco Prim Grip, cementitious self-levelling compounds can also be applied directly over existing tiles.

The range includes: Ultraplan Eco: a self-levelling, ultraquick-hardening smoothing compound for thicknesses from 1 mm to 10 mm, with very low emission levels.

Topcem: a special hydraulic binder for normal setting, fast drying (four days) and controlled shrinkage screeds.

Topcem Pronto: a ready-to-use, normalsetting, quick-dr ying mor tar with high thermal conductivity.

Application of Mapei Ultraplan Eco self-leveling compound

Mapecem Pronto: a pre-blended, ready-touse, quick-setting and -drying (24 hours), controlled-shrinkage mortar for screeds.

Ultraplan Maxi: an ultra-fast-drying, selflevelling compound for thicknesses from 3 mm to 40 mm.

IMIESA April 2019

51

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Transport, Logistics, Vehicles & Equipment

Wirtgen’s simplified Hamm 3410 compactor for upcoming contractors

Classic compaction A new entrant in the 10 t/11 t class targets SMME contractors.

T

he introduction of Wirtgen South Africa’s ‘Classic’ version of the Hamm 3410 singledrum compactor is specifically configured to meet the needs of upcoming road contractors. While it retains the same German build quality, some of the standard sophisticated features will only be available as options, significantly lowering the machine’s price.

Waylon Kukard, sales manager at Wirtgen South Africa, says the ‘simplification’ of the model is a true indicator of Wirtgen’s commitment to small contractor development, in line with its memorandum of understanding (MoU) with Sanral, signed last year on 19 October.

Wirtgen and Sanral’s MoU is aimed at giving CIDB-graded contractors access to road construction machinery, enabling them to participate more meaningfully in major projects. In terms of the agreement, small to medium contractors also have access to the Wirtgen Group’s full suite of leading equipment brands, as well as financing, training and logistics.

“We have had a look at the needs of this group of customers and we believe that the 3410 Classic is the leading line as far as their compaction equipment needs are concerned,” says Kukard.

In the 3000 range of compactors, Wirtgen South Africa fields the 3410 (10 t/11 t class), the 3411 (11 t/12 t) and the 3520 (20 t class).

Optional features Notable options on the Hamm 3410 Classic single-drum compactor are the Automatic Vibration feature and Hamm Compaction Meter (HCM). The Hammtronic electronic machine management system (HCQ), which works together with the Automatic Vibration and Compaction Meter, is also available as an option.

“The HCQ is designed to monitor all engine and vehicle functions, and adapts the traction and vibration/oscillation drives as well as engine speed automatically to the prevailing operating conditions,” explains Kukard.

Accordingly, all other components are operated

in the optimum range. This feature ensures that fuel consumption, as well as exhaust and noise emissions, are all automatically managed to operate within optimal ranges.

On all compactors equipped with Hammtronic, the driver can preselect the desired speed. It automatically remains constant, as though under cruise control. This creates the optimum conditions for homogeneous compaction. With this feature, continuously variable frequency control is also possible, enabling the extremely precise adjustment of compaction parameters.

Last but not least, Hammtronic ensures the gentle braking and acceleration of the machine – a further factor that has an impact on compaction quality.

The Automatic Vibration feature allows the machine to vibrate automatically (on and off) in line with the compaction needs of the job at hand. With the new 3410 Classic, operators will now be required to activate the vibration on and off manually.

The HCM serves to measure and display subsoil rigidity. To do so, an acceleration sensor on the drum measures the ground rigidity during dynamic compaction. The measurement result (the HMV value) shows the driver whether or not the subsoil is sufficiently compacted. In many cases, the information helps to reduce the number of passes and avoids over-compaction.

“The strategy is to offer contractors a Classic roller boasting German build quality synonymous with our brand,” says Kukard.

The Classic Hamm 3410 still remains a cutting-edge single-drum compactor. One of the outstanding features is the three-point articulation, which ensures optimum driving comfort, as well as outstanding traction and off-road mobility, even on rough terrain.

“The benefits of the three-point articulation can be seen every day in many situations on the construction site. One plus factor is the favourable weight distribution – it makes for enormous driving stability and ensures outstanding traction, even in rough terrain,” Kukard concludes.

Options available on the Hamm 3410 Classic single-drum compactor include Automatic Vibration

IMIESA April 2019

53

Transport, Logistics, Vehicles & Equipment

Flexible finance for SMMEs

G

rowing South Africa’s SMME road contractor base hinges on the ability of those companies to hire or acquire capital equipment. That, in turn, requires access to finance, which is frequently a challenge for start-ups.

In response, Dynapac South Africa has researched the market and developed a simple and flexible financial solution called Dyn@fin. According to Neville Marthinussen, business line manager at Dynapac, Dyn@fin offers one of the lowest monthly repayment values currently available on the market.

Dyn@fin packages are uniquely designed so that at the end of a customer’s selected payment period, ownership of the equipment passes to the customer, regardless of the purchase plan. Furthermore, as Dyn@fin is an off-balance-sheet solution, it promotes improved cash flow management.

54

Dynapac fields an extensive light equipment range

To cater for varying needs and business capabilities, Dyn@fin offers an array of payment options. These include deposits, repayment terms, and direct instalment sales purchases.

“To further complement our flexible financing solutions, Dynapac provides customers with ser vice maintenance contracts during the selected finance period. This ensures that the machines

IMIESA April 2019

Dynapac - Your Partner on the Road Ahead

At Dynapac Road Construction Equipment we strive to find new ways and better solutions.

Productivity, performance, ergonomics and environmental care are our priorities. However, our most important priorities are customer satisfaction and success. That’s why we ensure our efforts and resources are focused on development and knowledge transfer. Still, after more than 75 years, the ability to take advantage of change helps us to remain pioneers.

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they are utilising remain in prime condition,” Marthinussen explains.

Taking it one step further, Dynapac recently launched an advanced telematics device called Dyn@link. This device enables Dynapac to monitor machine health and operating hours, as well as predict service intervals.

Dyn@link’s GPS positioning capability also conveniently pinpoints machine location, which adds a further level of asset protection.

PROFESSIONAL AFFILIATES AECOM siphokuhle.dlamini@aecom.com Afri-Infra Group (Pty) Ltd banie@afri-infra.com ALULA (Pty) Ltd info@alulawater.co.za AQUADAM (Pty) Ltd sales@aquadam.co.za Aurecon Fani.Xaba@aurecongroup.com Aveng Manufacturing Infraset werner.booyens@infraset.com Averda claude.marais@averda.com Bigen Africa Group Holdings otto.scharfetter@bigenafrica.com BMK Group brian@bmkgroup.co.za Bosch Munitech info@boschmunitech.co.za Bosch Projects (Pty) Ltd mail@boschprojects.co.za BVI Consulting Engineers marketing@bviho.co.za Civilconsult Consulting Engineers mail@civilconsult.co.za Corrosion Institute of Southern Africa secretary@corrosioninstitute.org.za Development Bank of SA divb@dbsa.org.za DPI Plastics Farhana@dpiplastics.co.za EFG Engineers eric@efgeng.co.za Elster Kent Metering Leonardus.Basson@honeywell.com ERWAT mail@erwat.co.za Fibertex South Africa (Pty) Ltd rcl@fibertex.com GIBB yvanrooyen@gibb.co.za GIGSA secretary@gigsa.org GLS Consulting nicky@gls.co.za Gudunkomo Investments & Consulting info@gudunkomo.co.za Hatch Africa (Pty) Ltd info@hatch.co.za Henwood & Nxumalo Consulting Engineers (Pty) Ltd pmboffice@hn.co.za Herrenknecht schiewe.helene@herrenknecht.de Huber Technology cs@hubersa.com Hydro-comp Enterprises dan@edams.co.za I@Consulting louis_icon@mics.co.za INGEROP mravjee@ingerop.co.za Integrity Environment info@integrityafrica.co.za IQHINA Consulting Engineers & Project Managers info@iqhina.co.za iX engineers (Pty) Ltd hans.k@ixengineers.co.za JBFE Consulting (Pty) Ltd issie@jbfe.co.za JG Afrika DennyC@jgafrika.com KABE Consulting Engineers info@kabe.co.za Kago Consulting Engineers kagocon@kago.co.za Kantey & Templer (K&T) Consulting Engineers info@kanteys.co.za Kitso Botlhale Consulting Engineers zimema.jere@gmail.com Lektratek Water general@lwt.co.za Lithon Project Consultants (Pty) Ltd info@lithon.com Makhaotse Narasimulu & Associates mmakhaotse@mna-sa.co.za Malani Padayachee & Associates (Pty) Ltd admin@mpa.co.za M & C Consulting Engineers (Pty) Ltd info@mcconsulting.co.za Maragela Consulting Engineers admin@maragelaconsulting.co.za Marley Pipe Systems info@marleypipesystems.co.za Martin & East gbyron@martin-east.co.za

Masithu Consulting & Project Management info@mcpm.co.za Mhiduve adminpotch@mhiduve.co.za Mogoba Maphuthi & Associates (Pty) Ltd admin@mmaholdings.co.za Moedi Wa Batho Consulting Engineers (Pty) Ltd info@wabatho.co.za Much Asphalt bennie.greyling@muchasphalt.com NAKO ILISO lyn.adams@nakogroup.com Nyeleti Consulting ppienaar@nyeleti.co.za Odour Engineering Systems mathewc@oes.co.za Pumptron info@pumptron.co.za Ribicon Consulting Group (Pty) Ltd info@ribicon.com Royal HaskoningDHV francisg@rhdv.com SABITA info@sabita.co.za SAFRIPOL mberry@safripol.com SALGA info@salga.org.za SAPPMA admin@sappma.co.za / willem@sappma.co.za SARF administrator@sarf.org.za.co.za SBS Water Systems mava@sbstanks.co.za Sembcorp Siza Water info-sizawater@sembcorp.com Sigodi Marah Martin Management Support lansanam@sigodimarah.co.za SiVEST SA garths@sivest.co.za Sizabantu Piping Systems (Pty) Ltd gregl@sizabantupipingsystems.com SKYV Consulting Engineers (Pty) Ltd kamesh@skyv.co.za SMEC capetown@smec.com SNA stolz.j@sna.co.za Sobek Engineering gen@sobek.co.za Southern African Society for Trenchless Technology director@sasst.org.za Southern Pipeline Contractors (Pty) Ltd spc@vinci-construction.com SRK Consulting jomar@srk.co.za STAR OF LIFE EMERGENCY TRADING CC admin@staroflife.co.za Syntell julia@syntell.co.za TECROVEER (Pty) Ltd info@tecroveer.co.za TPA Consulting roger@tpa.co.za Ulozolo Engineers CC admin@ulozolo.co.za UWP Consulting nonkululekos@uwp.co.za V3 Consulting Engineers (Pty) Ltd info@v3consulting.co.za south-africa@vetasi.com Vetasi VIP Consulting Engineers esme@vipconsulting.co.za VUKA Africa Consulting Engineers info@vukaafrica.co.za Water Institute of Southern Africa wisa@wisa.org.za WAM TECHNOLOGY CC support@wamsys.co.za Water Solutions Southern Africa ecoetzer@wssa.co.za Wilo South Africa marketingsa@wilo.co.za WRP ronniem@wrp.co.za WRNA washy@wrnyabeze.com WSP Group Africa ansia.meyer@wsp.com

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