A solid foundation for growth in the cement industry
Transmission
IN THE HOT SEAT
The Lesotho Highlands Water Project –Phase
Biodiversity
IN THE HOT SEAT
Worldwide, healthy economies depend on a vibrant construction industry, with the consulting engineering community serving a crucial interfacing role. IMIESA talks to David Leukes, Managing Director at BVi Consulting Engineers about the challenges and opportunities for South African infrastructure as a catalyst for meaningful socio-economic advancement. P8
EDITOR Alastair Currie
Email: alastair@infraprojects.co.za
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Unification requires flexible political pathways
Across the globe, the influence of political leaders is a deciding factor in shaping each country’s current and future macroeconomic policy. Within the mix, voters play an essential role in selecting the best party or parties for the job, based on their respective manifestos. After that, it’s up to the elected politicians to deliver and for citizens to hold them to their promises.
Maintaining GNU momentum is key for the South African economy, working in synergy with existing and potential trading alliance partners from the African Union, BRICS, G7 and the broader G20, where South Africa currently heads the G20 Presidency for 2024/2025. The overarching objective is to enable sovereign growth targets within fair competition frameworks, i.e., no punitive tariffs.
material herein IMIESA is copyright protected and may not be reproduced 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.
This is especially significant in the post Covid-19 landscape, where most nations are still dealing with the socio-economic fall-out. The essential message from the world’s electorate is that change needs to happen faster in combatting the spiralling cost of living crisis, as well as unemployment. At times, when frustration reaches its boil point, there’s a political backlash, as we’ve seen during landmark elections worldwide in 2024.
G7 elections
Within the Group of 7 (G7) countries, for example, the UK’s Labour Party won a landslide victory and majority in parliament, displacing the longstanding Conservative Party. The 2024 USA Presidential Election was another key turning point for American and international politics, with the Republican Party taking the lead in the US Senate and the House of Representatives.
France also went to the polls in 2024, with the outcome again ending in a hard-fought coalition. Meanwhile, the future of Germany’s coalition government – representing the EU’s largest economy – will be decisive in the aftermath of its snap federal elections on 23rd February 2025. This follows the collapse of the previous governing collation last year.
GNU’s local and international influence
Within South Africa, we are still on track in terms of our second Government of National Unity (GNU). The first was formed between 1994 and 1997, and the second following the 2024 National and Provincial Elections. The big difference is that the first GNU was a voluntary power sharing coalition since there was a clear majority party. In today’s GNU, no party has an outright majority so it’s a true coalition government, reflecting the will of the South African electorate. Time will tell whether true unity can be achieved. In the meantime, though, positive traction is being gained and recognised by buoyant JSE trading sentiment.
SoNA
Against this backdrop, President Cyril Ramaphosa delivered the 2025 State of the Nation Address (SoNA) on 6th February, where he announced the rollout of the country’s Medium-Term Development Plan (MTDP). A five-year programme, the MTDP is founded on three strategic priorities. These entail the need to drive inclusive growth and job creation; reduce poverty and tackle the high cost of living; and build a capable, ethical and developmental state.
Service delivery was the dominant central theme, with a major focus on SOE and local government performance outcomes supported by proficient and accountable public sector leaders. Evidence shows that this is what defines leading nations and will be instrumental in South Africa’s case in effectively spending the R940 billion plus on infrastructure announced at SoNA over the next three years.
Implementation in not an academic exercise. It will require a much stronger public-private partnership (PPP) arrangement that is practical and real-world. This in turn will require a far higher degree of trust, policy certainty and political maturity. That should be Priority Number One for the GNU.
Progression not regression
In the end, whether it’s a developed or developing nation –and South Africa is a combination of both – every citizen and industry expects a high functioning infrastructure backbone as a given. In our case, though, there are critical new build and maintenance backlogs that have occurred due to regressive under-delivery. Unless urgently addressed, they will impact on South Africa’s ability to grown and complete on an equal footing. So, let’s put the MTDP to work.
IMESA
Capacity building and professionalisation
Since this is our first edition for 2025, I’d like to start by wishing all our readers and advertisers a warm welcome to a New Year that presents a host of exciting opportunities. Foremost among these for IMESA is the advancement of municipal engineering excellence.
As the new President for the 2024-2026 term, one of my key focus areas is to strengthen IMESA’s representation within all 257 South African municipalities. At last year’s IMESA annual conference we had close to 90 represented – inclusive of all eight metros. This year at our 88th event in East London during October we’d like to see a much greater showing. I’m committed to making this happen by working in collaboration with key entities that include the South African Local Government Association.
This strategy forms part of growing IMESA’s own network, which is extensive and represented regionally through seven national branches. Each is run by a dedicated team of professionals –volunteers from both the private and public sector – who are your regional point of contact as current or future members. Each branch hosts workshops and seminars during the year, which provide key insights into local infrastructure developments and are CPD accredited.
Design flood estimation workshops
These branch initiatives are supported by national IMESA training programmes for members and industry. In 2025, for example, we are rolling out four capacity building one-day workshops on “A Best Practice Guideline for Design Flood Estimation in Municipal Areas in South Africa”. This follows the first wave in 2024, which comprised six workshops. Co-funding is being provided by the Water Research Commission (WRC) in terms of a 5-year Memorandum of Agreement with IMESA. (The WRC and IMESA were joint sponsors of the guideline’s development.)
The four CPD-accredited workshops for 2025 are being held in Durban, Bloemfontein, Mahikeng and Mbombela. Further details are available at www.imesa.org.za.
In addition to targeting engineers, we also plan
to develop a series of ten half-day non-technical workshops on this topic for municipal officials and councillors. The Bloemfontein event serves as a pilot project for the ultimate course structure.
The rationale for this follows feedback from the 2024 workshop delegates, who stressed the need for technical and non-technical leadership to be aligned. This is especially the case given that political heads are instrumental in motivating and approving budget allocations for infrastructure projects – like human settlements. It’s vital that they have a high-level understanding of floodplain risks, plus interrelated Disaster Management and Planning resilience.
Focus areas
So, we need to ensure that IMESA’s mandate continues to align and support our mission and vision on the ground – where it counts.
One region where we have had lower activity in recent years is in the Northern Cape and Free State – chiefly due to the retirement of key members. So, in 2025 we are working to rebuild our presence in these important regions, as well as to ensure local branch representation on our Executive Committee (EXCO).
I’d also like to see the very successful implementation of our YP2 Young Professionals Forum within our IMESA KwaZulu-Natal (KZN) branch replicated across all branches. To this end, IMESA Past President and current EXCO member, Bhavna Soni, has taken on the role of Operations Director: Young Professionals to lead the charge. Since its formation, YP2 has been instrumental in running mentorship networking sessions, and workshops. A standout initiative in 2024 was their rendition of an Amazing Race: Engineer Edition. This fielded ten competing
teams that each had to complete technical challenges at four stops along the route –hosted with thanks by the event sponsors. This event is back on the cards for 2025, and it would be great to see other centres rising to the challenge.
An allied endeavour is the IMESA bursary programme, which is our contribution towards creating a new pipeline of engineering talent. In 2025 we will be awarding eight bursaries for qualifications recognised by the Engineering Council of South Africa (ECSA).
Digital evolution
Education is key. However, combining the theory and practice of engineering is what builds true competency. That’s why the ongoing professionalisation of the municipal engineering sector is essential both for effective service delivery and the execution of safe and sustainable infrastructure – on time and within budget. In addition to ECSA registration – in meeting set proficiency benchmarks – the acquisition of new modern-day skills is also essential. Foremost among them is digitalisation – spearheaded by Building Information Modelling (BIM), as defined by SANS 19650.
Revolutionising construction worldwide, BIM presents an unprecedented opportunity for municipalities to modernise infrastructure planning, execution and asset management. Going forward BIM will also become increasingly mandatory, as is already the case, for example, within the UK and EU region for all public sector construction projects.
South Africa will inevitably follow suit, with proactive examples of voluntary BIM adoption already evident on local public and private sector projects. A key benefit is that it provides a unique opportunity to interconnect consulting engineers, contractors, and municipal engineers intelligently and efficiently. That’s what we need in meeting our pressing socioeconomic goals.
Geoff Tooley, Pr Eng Hon FIMESA IMESA President: 2024-2026
VEGA’S RADIOMETRIC TECHNOLOGY
A SOLID FOUNDATION FOR GROWTH IN THE CEMENT INDUSTRY
The production of cement involves a complex series of processes, from handling raw materials to the final stages of grinding. Precise measurements throughout these stages are vital to ensure product quality, enhance operational efficiency, and safeguard equipment.
Acement manufacturer in Kenya experienced difficulties with unreliable level measurements in the cyclone preheater, often resulting in production stoppages, equipment breakdowns, and increased safety risks. Inaccurate measurements could lead to undetected material buildup, which poses the risk of overheating or explosions. To mitigate these challenges, VEGA introduced the SOLITRAC 31, a radiometric level measurement sensor designed to provide durability and precision in the demanding conditions of cement production.
Cyclone preheaters in cement manufacturing
By effectively preheating raw materials before they enter the kiln, cyclone preheaters substantially improve energy efficiency and overall production capabilities. The design of cyclone preheaters promotes effective heat exchange, enabling the rapid achievement of higher temperatures. This enhancement not only accelerates the manufacturing process but also aids in the reduction of emissions, presenting a more environmentally sustainable alternative. Using cyclone preheaters not only optimises cement production and boosts
product quality, but it also contributes greatly to a more sustainable manufacturing process. The operating conditions within a cyclone preheater are intense with temperatures surpassing 900 ° C and elevated dust concentrations posing difficulties for equipment and personnel. Precise level measurements within the preheater are critical for maintaining adequate material flow, optimising heat exchange, and avoiding complications such as blockages or overflows.
Enhancing safety, efficiency, and operational reliability
One of the most valuable aspects of the SOLITRAC 31 is its low-maintenance design. Unlike traditional level measurement devices used in high-temperature, highdust environments, which require frequent upkeep, the SOLITRAC 31 is maintenancefree. Its radiometric technology and external
Cement production requires durability, precision, and flexibility, and VEGA’s solutions rise to the challenge with a combination of innovation and practicality
The SOLITRAC 31 is a radiation-based sensor with PVT rod detector for continuous measurement of liquids and bulk solids. SOLITRAC 31 is ideal for use on cylindrical vessels, reactors, autoclaves, separators and mixing vessels, where it provides extraordinarily high accuracy over the entire measuring range
consistent output quality. Since the sensor’s installation, the plant has seen improved operational efficiency and reduced fuel costs. The safety of the plant, equipment and personnel is also a major concern in cement manufacturing, and SOLITRAC 31’s reliable monitoring assists in identifying potential hazards before they become critical. This feature has proven to be essential in preventing conditions that could threaten worker safety and equipment damage, supporting VEGA’s commitment to safety and reliability in industrial applications.
A solid foundation for growth
PRECISION WITHOUT COMPROMISE
VEGA’s radiometric measuring solutions provide unmatched accuracy and reliability for challenging industrial processes. Using non-contact technology, these systems excel in applications where extreme conditions – like high temperatures, pressures, or aggressive materials – make traditional methods impractical. By employing gamma radiation, VEGA’s solutions ensure precise level, density, and mass flow measurements. The compact designs are easy to install, even in existing systems, without disrupting operations. Safety is a priority, with systems designed to minimise radiation exposure through shielding and sophisticated monitoring systems.
installation mean there are no components subject to direct wear, eliminating the need for regular cleaning or calibration and lightening the maintenance workload.
For the Kenyan plant, this reduction in maintenance needs has led to considerable cost savings. With fewer interruptions, the plant experiences reduced downtime and increased productivity. The sensor’s durability has also minimised replacement costs, resulting in substantial long-term operational savings.
The SOLITRAC 31 enhances efficiency and safety in cement manufacturing, with its precise real-time level measurements assisting in the prevention of blockages, equipment damage, and material buildup. Consistent level measurement is critical in the preheater, as fluctuations disrupt heat balance and increase fuel consumption. With the SOLITRAC 31’s automated adjustments, the preheater can maintain optimal conditions, maximising energy efficiency and ensuring
The experience of the Kenyan plant with the SOLITRAC 31 highlights the importance of reliable level measurements in manufacturing environments. VEGA’s radiometric solution has effectively addressed ongoing issues related to accuracy, safety, and maintenance, significantly enhancing operational efficiency and promoting a safer workplace. The SOLITRAC 31 exemplifies VEGA’s dedication to tackling complex industry challenges.
Cement production requires durability, precision, and flexibility, and VEGA’s solutions rise to the challenge with a combination of innovation and practicality. The successful implementation of SOLITRAC 31 in Kenya showcases the power of radiometric technology alongside VEGA’s engineering expertise. VEGA provides a comprehensive array of instruments designed for every stage of production: from monitoring silo levels to measuring kiln pressure.
VEGA’s solutions go beyond simple measurement; they establish a groundwork for continuous improvement, resilience, and growth. As manufacturers worldwide seek to optimise production processes and safeguard their workers, VEGA’s technology and
www.vega.com/en-za
Industries such as mining, cement manufacturing, chemical processing, and power generation benefit from VEGA’s radiometric technology due to its versatility and durability. Products like the MINITRAC and SOLITRAC range offer innovative features like advanced signal processing, ensuring reliability even in the harshest environments.
With VEGA, you gain cutting-edge technology tailored to optimise performance and safety in complex industrial applications. Trust VEGA to deliver precision when it matters most.
Forming part of VEGA’s radiation-based sensor series, the MINITRAC 31 is designed for noncontact density measurement of liquids and bulk solids. It is mounted external to the pipeline or vessel walls where its compact shape makes it ideal for fitment in hard to access positions and in locations with space restrictions
expertise continue to set the standard, paving the way for advancements that go beyond just bricks and mortar.
SUSTAINABLE INFRASTRUCTURE requires innovation, commitment and collaboration
BVi provided consulting engineering services for the detailed design and construction monitoring of the realignment of the N3, Section 2 from
Worldwide, healthy economies depend on a vibrant construction industry, with the consulting engineering community serving a crucial interfacing role. IMIESA talks to David Leukes, Managing Director at BVi Consulting Engineers about the challenges and opportunities for South African infrastructure as a catalyst for meaningful socio-economic advancement.
What are some of the main industry concerns at present?
Aside from global economic and political factors outside our control, the consulting engineering sector in South Africa – as well as the construction industry in general – is currently contending with several critical challenges that require immediate attention. Foremost is the regulatory framework –especially the implications of the pending Public Procurement Act 28 of 2024 (PPA) – where the industry needs greater clarity and certainty in terms of the ease of doing business.
Overall, public infrastructure investment remains too low, compounded by a decline in local government performance. This viewpoint is reflected in Consulting Engineers South Africa’s
(CESA’s) Bi-Annual Economic and Capacity Report Surveys. Between July and December 2023, for example, industry activity contracted by 22%, the lowest level recorded since 2019.
Since then, there has been some improvement, as reflected in the Bi-Annual Economic and Capacity Report Survey for June 2024. This showed that the consulting industry experienced a moderate 3.6% increase in earnings during the first half of 2024 compared to the last half of 2023. The bulk of this work was sourced from private sector projects. Factors that affected margins – common across all South African industries –include economic stagnation and escalating costs.
The solution going forward is to increase traction on government’s Economic Reconstruction and Recovery Plan. That’s interdependent on proactive public and private sector investment underpinned by policy certainty. This cannot be a stop-start process, and the local and international investor market will expect measurable outcomes flowing from President Cyril Ramaphosa’s State of the Nation Address (SoNA) in February 2025, where government announced the allocation of
David Leukes, Managing Director, BVi Consulting Engineers
R940 billion for infrastructure over the next three years. If realised, this will make a major difference in helping meet the South African Reserve Bank’s 1,8% Gross Domestic Product growth forecast for 2025.
Do you anticipate an upturn for SA infrastructure in 2025?
Yes, all the signs point to a stronger year in 2025. The government has outlined significant investments and strategic initiatives to revitalise key infrastructure areas.
In terms of action, some 82 Strategic Integrated Projects are currently under construction –collectively valued at R437 billion. However, more attention is required in terms of capital expenditure allocations for the construction and maintenance of water and sanitation related infrastructure within municipalities across South Africa. Plus, it’s hoped that a renewed drive by the Auditor-General South Africa on local government outcomes will ensure that approved budgets allocated during 2025/2026 are correctly spent.
At SOE level, an excellent example of effective execution are the works being carried out by the South African National Roads Agency. The latter invested R4,1 billion on toll roads, and R23 billion
Key Ridge (km 2.8) to Hammarsdale (km 8.1)
on non-toll roads during the 2023/24 financial year. This positive development flowed through to 2024/25, with an initial 86 contracts worth R15 billion awarded. The same level of intervention is required in our rail, harbour and electricity generation and distribution infrastructure.
Is there an adequate pipeline of young professionals?
Creating opportunities for graduate development is a key factor. Good examples include initiatives like the Masakh’iSizwe Programme, established in 2006 by the Western Cape Government, to make available cohorts of trained professionals in the engineering and built environmental fields. Another example is the Young Professionals Programme introduced by the Department of Public Works and Infrastructure. The latter aims to strengthen the skills pipeline by facilitating the professional registration of built environment candidates through structured training and mentorship frameworks.
In parallel, as a leading multi-disciplinary consulting firm and employer, we are playing our own instrumental role through various in-house programmes. These include:
• BVi BEE Employee Trust initiatives, where we offer extensive training opportunities specifically aimed at fast-tracking the careers of young black engineers and technologists into management roles, and
• The BVi Academy and Graduate Internship Programme, which focuses on developing graduate engineers through an intensive two-year internship programme.
What defines business excellence for BVi?
At BVi, our success is driven by a unique management structure that sets us apart in the industry. Testimony to this is our recognition at the CESA Aon Engineering Excellence Awards 2024 where BVi won the “Business Excellence of the Year” category.
Our commitment to business excellence is a comprehensive strategy that balances superior client value with sustainable organisational growth, thanks to our high-performance and inclusive culture.
Wind Energy Facility Compacting bedding for a 3,5 km 1 020 mm Ø HDPE outfall sewer pipe in Thabong, Welkom. The works form part of a series of Ministerial Intervention projects implemented in Matjhabeng Local Municipality, Free State
Our ownership model is built on broad-based participation, where managers are also company owners. This structure fosters a deep sense of accountability, commitment, and alignment with BVi’s vision.
A key advantage of our business model is decentralisation of decision-making. Empowering managers with operational authority eliminates unnecessary bureaucracy, enabling swift, informed decision-making. This approach ensures personalised, high-level attention to each project, exceptional service delivery, and unwavering quality standards – hallmarks of the BVi experience as defined by our guiding principle, “Big enough to make a difference, small enough to care.”
Do you have a wish list of priority projects?
Absolutely, and it’s one that is multi-faceted, holistic and mirrors our current in-house portfolios, in alignment with the National Infrastructure Plan 2050.
Key focus areas must include water infrastructure development, which entails upgrading and expanding water and wastewater treatment plants to ensure Blue and Green Drop compliance; investing in bulk water projects to mitigate shortages in urban and rural areas; and resolving non-revenue water.
Energy security is also crucial, where the emphasis should be on expanding the renewable energy segment. Additionally, investments in grid infrastructure and transmission networks will be required to support growing energy demands. Allied to this, we need to enhance municipal energy resilience through independent power producer (IPP) programmes.
As a key enabler for micro and macro growth, we must also refocus on modernising transport and
logistics infrastructure. This includes upgrading roads and highways to improve connectivity; revitalising rail infrastructure in terms of freight corridors and passenger rail; and expanding and revitalising our ports and harbours.
In the human settlements arena, priority should be given to large-scale social housing projects to accommodate urbanisation, along with the ongoing transition of informal settlements to formal developments serviced by roads, water and sanitation. In parallel, municipal infrastructure renewal needs to accelerate in modernising existing water, sewage, and sanitation networks; improving stormwater management and flood mitigation risks; and strengthening waste management infrastructure by promoting a culture of recycling.
The expansion of digital and smart infrastructure is another key priority, particularly the rollout of broadband and 5G networks; and upgrading ICT infrastructure to support advancements in education, healthcare, and business innovation.
Finally, there’s a real need for special economic zones (SEZs) to promote industrialisation and manufacturing, as well as the advancement of initiatives like green hydrogen that align with South Africa’s sustainability goals.
As citizens, government, and industry, we must all collaborate to build the future we want. At BVi we have the capacity, competence, ability, and most of all, remain committed to contribute towards this unified developmental agenda.
Periodic maintenance on National Route 2, Section 7 between Grootbrak (km 0.00) and Kraaibosch (km 28.6)
Phezukomoya
Improving lives through water enabling partnerships
Water and livelihoods are irrevocably interlinked and require a concerted water demand management strategy. IMIESA talks to Dr Kobus Duvenhage, incoming CEO at Lebalelo Water User Association (LWUA) about how their unique public-private collaboration model is realising this vision on the evolving Olifants Management Model Programme (OMMP) – in the process ensuring sustainable water security for regional enterprises and communities.
What are some of your key objectives as the new CEO?
Limpopo’s Eastern and Northern Limb of the Bushveld Complex is home to the world’s highest concentration of Platinum Group Elements and as such is a major mining area and contributor to South Africa’s macroeconomy. Founded in 2002, LWUA was originally formed to provide sustained bulk water supply to these mining and allied industrial operations, with incremental infrastructure development undertaken over time.
As part of this endeavour, over the past three years or so, I have served as the Programme
Director for the OMMP, which is currently LWUA’s most significant project to date in ramping up water capacity to support future growth. In completing Stages 1 through 6, around R25 billion in capital expenditure will be required.
As the CEO, effective 1 st January 2025, I now have an opportunity to drive this and allied initiatives at the highest strategic leadership level in partnership with our public and private stakeholders, as well as local communities. The overall objective is to solidify LWUA’s role as a trusted water services partner.
I’ll also be overseeing the seamless transition of LWUA’s rebranding to Badirammogo Water User Association (BWUA), ensuring alignment with the new organisational structure and objectives.
What’s the motivation for the pending name change to BWUA?
In Sepedi, Badirammogo means “working together” or “collaboration” – a symbol of unity. This underscores our evolving mandate for infrastructure provision that supports socioeconomic development (SED).
There are certain conditions that still need to be met before the amended Constitution can be gazetted, which, when it occurs, will officially confirm the Association’s name change to Badirammogo, heralding an exciting new era for the Association. However, the name LWUA will be retained for the special purpose vehicle.
Will BWUA become a Water Board?
No, it won’t. Our primary focus is unchanged as a defined Water User Association in terms of the National Water Act, which means our sole scope is to supply bulk raw water to customers. The membership spilt and ownership remains 50:50 between Commercial Members – mining and industrial users – and Institutional Members, namely government, represented by the Department of Water and Sanitation (DWS).
However, as an implementation agent of government, we are now authorised to implement construction from source to tap (as confirmed by DWS in March 2022), which provides for an integrated bulk raw and potable water supply infrastructure network solution. That will form a core component of the OMMP. This will also include the repair of defective municipal pipeline infrastructure.
Dr Kobus Duvenhage, CEO, Lebalelo Water User Association (LWUA)
Flag Boshielo Dam
In terms of the Water Services Act, potable water supply legally remains within the domain of the Water Boards and downstream municipal Water Service Authorities (WSAs) in terms of network operations and maintenance.
The name change to Badirammogo therefore forms part of our communication strategy to ensure that community members clearly understand our legal mandate, as well as the value-added elements we’ve included in the OMMP to empower specified municipalities and communities through new build and refurbishment projects. In parallel are a series of key SED initiatives.
What are some of the key stages in LWUA’s evolution?
The most significant is the potential obstacle that occurred in 2016 when the government published an intention to disestablish LWUA and incorporate it into Lepelle Northern Water. This move was motivated by negative perceptions among community members. They felt that mines (and by association, LWUA) were taking their water and giving little back in the form of jobs or opportunities. In response, LWUA suffered damages of over R25 million to its pipeline due to vandalism and theft, aimed at halting mining operations.
This pivotal moment (the intention to disestablish the Association) led to LWUA positioning itself as a strategic water management partner and catalyst for the creation of sustainable SED in the regions in which it operates.
As part of this transformation process, LWUA submitted a proposal to DWS to re-sequence and accelerate the completion of government’s Olifants River Water Resources Development Project (ORWRDP) – the first phases having been implemented. The ORWRDP was conceptualised by DWS in parallel with the construction of the Lebalelo Scheme (completed by LWUA in 2002). To restart the ORWRDP process all existing designs and planning approvals were transferred to the new OMMP.
Two key agreements signed by DWS and LWUA paved the way for the launch and implementation of the OMMP: a Memorandum of Intent was signed on 12th July 2021; and a Heads of Terms for an OMM Framework Agreement was signed on 23rd March 2022.
The primary goal of the OMMP is to expedite construction of bulk raw and potable water infrastructure in Sekhukhune District Municipality and Mogalakwena Local Municipality, while optimising the utilisation of existing infrastructure and water supply from two dams (the De Hoop and Flag Boshielo Dams) in the Middle Olifants catchment. The OMMP will also enhance the water supply to the Polokwane Local Municipality, which faces a 30 Mℓ/day water shortage.
The OMMP was officially launched at the 2022 Mining Indaba in Cape Town on 9th May by the former Minister of DWS, Mr Senzo Mchunu. This was followed by a community launch in Ga-Malekana on 27th October 2022 and a sodturning at the Spitskop Pump Station in Steelpoort, signalling the start of the OMMP’s pre-feasibility stage and the construction of the OMMP’s Southern Extension 2 Phase 1.
Further to this – and to clear the way – in September 2022 the Minister of DWS formally gazetted the withdrawal of the intention to disestablish the Association. Then in December 2022, DWS signed Implementation and Funding Agreements, which confirmed LWUA as an Implementing Agent for DWS; and in July 2023, the DWS Minister signed the Association’s amended Constitution. The amended Constitution increases LWUA’s geographical operational area and provides the broad mandate to implement the OMMP.
The water infrastructure and scheme will ultimately supply water to the WSAs, through their water service providers, such as Lepelle Northern Water Board, to service towns and communities situated within the aforementioned municipalities. It will also supply commercial water users, including mining companies and industrial users, within LWUA’s, and subsequently BWUA’s operational footprint.
The first project as part of the OMMP – the Southern Extension 2 Phase 1 – was practically completed in March 2024 and commissioned on 26th April 2024 at a cost of R390 million. Phase 1 included the construction of a new pump station next to the existing Spitskop Pump Station, a new reservoir at Dwarsrivier and approximately 15 km of bulk raw water pipeline.
What is the current and future operational footprint?
Our current operational footprint stretches 110 km across the Sekhukhune District Municipality, from the Havercroft weir on the Olifants River in Modubeng to Anglo Platinum’s Mototolo mine south of Steelpoort.
Currently, LWUA owns, operates and maintains the Havercroft weir, settlement ponds and storage dams; five pump stations (Havercroft, Clapham, Spitskop, Dwarsrivier, and Borwa); two reservoirs
De Hoop Dam
LWUA infrastructure (SE2 Phase 1): inside the new Spitskop pump station
(Croyden, Mooihoek); and 110 km of bulk raw water pipeline.
However, the rollout of the OMMP will significantly expand out territorial scope. The OMMP involves constructing 200 km of bulk raw water pipelines and 675 km of potable water pipelines, along with several pump stations, reservoirs and water treatment works (WTW). The works also include optimising existing infrastructure and water supply of the De Hoop and Flag Boshielo Dams in the Middle Olifants catchment.
The OMMP will be implemented incrementally in six stages over ten years, with a targeted completion date of 2034:
- Stage 1: Phase 2B and 2B+ (steel pipelines from Flag Boshielo Dam to Sekuruwe through Mokopane) and Northern Limb (NL) WTW is valued at R7,7 billion.
- Stage 2: Phase 2D and Phase 2F (steel pipelines from Steelpoort to Mooihoek and Clapham to Olifantspoort Weir connecting Polokwane with the De Hoop Dam), Eastern Limb (EL) WTW and EL and NL quick wins is valued at R5 billion.
- Stage 3: EL and NL reticulation and EL WTW refurbishment is valued at R1,7 billion.
- Stage 4: the remainder of bulk potable water development is valued at R5,6 billion.
- Stage 5: EL and NL reticulation Phase 1 is valued at R2,5 billion, and
- Stage 6: EL and NL reticulation Phase 2 is valued at R2,5 billion.
Commencing with Stage 1 in the Northern Limb will immediately unlock Stage 0 allowing member access to the De Hoop Dam and the existing Phase 2C pipeline, debottlenecking the Eastern Limb and increasing security of supply in the region. (The timing of the stages and a map of the footprint area are shown in Figures 1 and 2.)
Can LWUA’s SED strategy make a difference?
Absolutely. This investment goes beyond fulfilling our mission and plays a crucial role in maintaining our social license to operate. Currently, our SED initiatives are split between LWUA’s operations and the OMMP.
There are four core LWUA programmes, namely educational support to improve STEM and literacy skills, a prime example of the latter being LWUA’s partnership with Nal’ibali in the delivery of a Reading for Enjoyment Campaign; SMME enterprise development; community-driven agricultural projects to promote food security and economic sustainability; and community-based Wi-Fi services.
In parallel, our OMMP SED initiatives focus on five key themes, namely potable water; water reuse; enterprise development; education; and connectivity.
Current OMMP SED projects include:
- The School Upgrade Programme, which integrates modern facilities such as low-flush ablution systems, solar power, and library resources, alongside enhanced internet connectivity for schools and remote communities, and
- The Participate Envision Navigate (PEN) Early Childhood Development (ECD) Programme.
Could the OMMP model be employed to roll-out other mega public-private projects?
Definitely. A key distinction in our case though is that the OMMP is a public-private collaboration and not a conventional public-private partnership. However, our unique model does offer a scalable and adaptable approach that can be replicated in the water sector and across other sectors where extensive regional linear and utility infrastructure is required. A prime example is LWUA’s proposal to establish an Energy User Association within Limpopo. This would entail the construction of a pumped storage facility interconnected with the De Hoop dam, which could also tie in with future solar installations for a 24/7 power solution.
Is adequate funding in place for practical OMMP implementation?
Institutional Member (government) funding contributions have already been approved for both Stages 1 and 2. Going forward, financing of all new infrastructure will be contributed in equal portions by the Commercial and Institutional Members. The capital processes will be fully ringfenced with each grouping independently responsible for the required security associated with funding agreements.
Institutional Member funding comprises primarily of government grants and concessional loans. Together with the Infrastructure Fund, various applications have been and will be submitted to National Treasury through the Budget Facility for Infrastructure for each submission window.
LWUA infrastructure (SE2 Phase 1): the new Dwarsrivier reservoir
FIGURE 1 OMMP implementation timeline
For the future stages, it is envisaged that a similar funding structure for the Institutional Members will be used. The rationale of maintaining a similar funding structure with government grants and concessional loans is to ensure overall tariff affordability and longterm sustainability for the Institutional Members and end users.
How is the private sector funding component being managed?
LWUA is raising funds on behalf of Commercial Members. Their contributions will be raised primarily through long-dated debt from local commercial banks. At this stage, three Mandated Lead Arrangers have been appointed by the Association to arrange the funding for the full OMMP, subject to a defined protocol and commercial negotiation processes.
Can the Association assist municipalities within its footprint to enhance their water/wastewater infrastructure?
Yes. LWUA has developed a Municipal Operational Readiness Programme (MORP) specially for this purpose over the term of the OMMP and covers the following areas:
- Capability building through the provision of appropriate support interventions that may include development of standard operating processes, tools and provision of focused support and training;
- Operational and technical collaboration and key intervention implementation support;
- Water conservation and water demand management, focusing on the planning and implementation of key interventions towards water loss reduction, non-revenue water reduction and improved cost recovery;
- Leadership, oversight and technical support, specifically related to the No, Blue and Green Drop Programmes and the development of remedial action plans; and
- Planning support to assist in sustainable decision making.
What are some of the key takeaways from the OMMP initiative?
Here are six key lessons learnt for successful public-private collaboration:
- Identify a common need: Collaboration begins with recognising a shared problem. For the OMMP, the need for bulk raw and potable water infrastructure in Limpopo was clear. By addressing these overlapping needs, the programme aligns government and industry objectives, ensuring a secure water supply for the private sector while supporting government in delivering services and maintaining control of assets;
- Build trust early: Trust is the foundation of successful collaboration and is built through transparent communication and shared decision-making. The OMMP has prioritised aligning government departments and commercial water users through consistent stakeholder management and effective political positioning to highlight the benefits of economic expansion and SED;
- Focus on socio-economic impact: Large-scale projects must consider their broader socioeconomic impact. This approach ensures long-term community growth while encouraging economic development;
- Create a collaborative structure: The OMMP
is managed within LWUA’s governance framework, an independent, non-profit organisation. Decisions are made equitably, based on consensus and compliance with established policies, ensuring the programme’s focus remains on shared objectives rather than profit;
- Share responsibility and risk: Successful collaboration requires all parties to share financial responsibility and decision-making. In the OMMP, both government and the private sector contribute equally, with innovative funding mechanisms reducing the burden on the fiscus, with joint commitment to the programme’s success; and
- Be patient and adaptable: Collaboration across diverse organisations and stakeholders demands patience and agility. As circumstances evolve, the OMMP remains adaptable while staying aligned with its overarching goals, ensuring continued progress in a complex environment.
And in closing?
A competent project delivery team is crucial for the success of any large regional linear and utility infrastructure project. The OMMP Project Management Unit has a proven track record, utilising state of the art project control systems and tools. That’s a key factor for all successful mega projects implemented worldwide.
FIGURE 2 The OMMP operational footprint
India is one country bucking global trends in transmission infrastructure, making significant strides to expand and modernise its grid to accommodate renewable energy
INTEGRATING RENEWABLES: WHY TRANSMISSION GRIDS ARE KEY
Transmission systems of the future need to rapidly adapt to the new world of sustainable energy. Grids need to expand to accommodate the growing new sources of clean energy and adjust to the variability and intermittency nature of such sources. With real world solutions available and new technologies now maturing, modern sustainable transmission systems have become a key enabler of the Energy Transition. By André Van Der Walt* and Tumisang Gabriel**
TRANSMISSION IN THE TRANSITION
Many transmission grids worldwide were designed for consistent power output from fossil fuels. These older grids are ill-equipped to provide adequate inertia to manage the variability inherent in renewable sources like wind and solar. Electricity grids not only need to expand and reconfigure to keep up with a changing energy landscape but also need to enable economic development by meeting the global demand growth.
The International Energy Agency estimates that for countries to reach their individual national goals on decarbonisation, over 80 million kilometres of transmission and distribution lines would need to be added or replaced by 2040, the equivalent of the entire existing global grid. EIA’s International Energy Outlook projects a 34% increase in world energy consumption by 2050 due to global population growth,
increased regional manufacturing, and higher living standards (EIA International Energy Outlook 2023). Many advanced economies will need to contend with aging transmission infrastructure, which requires huge capital commitments to refurbish and upgrade existing infrastructure to extend its life cycle.
Advanced Distribution Management, Ghana Power Compact
Solutions for grid stability and capacity expansion
India is one country bucking global trends in transmission infrastructure, making significant strides to expand and modernise its grid to accommodate renewable energy. In regions like Madhya Pradesh, India, SMEC played a critical role in expanding the transmission network to integrate 4 000 MW of solar and wind energy into the grid. The project added 1 700 km of new transmission lines providing clean, stable and affordable energy.
New “Green Energy” corridors are critical in transmitting power from regions rich in solar and wind energy to demand centres across the country. Phase I is nearly complete, and Phase II, targeting an additional 10 750 circuit kilometres of transmission lines, is set to be finished by 2026.
The future of power transmission will require sophisticated operational flexibility across power, voltage, transfer capacity and energy storage:
• Power: Solutions that adjust the amount of electricity generated or consumed.
• Voltage: Solutions that regulate the voltage level within the grid.
• Transfer capacity: Solutions that increase or decrease the amount of electricity that can be transmitted.
• Energy: Solutions that store or release energy. This integrated systems approach highlights the many levers that can impact the efficacy of renewable energy transmission. Below we explore three key avenues that illustrate how transmission is adapting to the new world of sustainable energy.
Improving transmission system stability
Renewable energy variability requires advanced solutions for stabilising power grids. Historically, traditional rotating plants provided inertia, helping to stabilise frequency fluctuations. However, modern grids must rely on new technologies like battery energy storage systems (BESS) to provide this function.
Projects like the 250 MW Torrens Island Battery Project in South Australia, demonstrate SMEC’s expertise in grid reconfiguration. The Torrens Island battery is one of the largest in the country and one of the first in the world to feature gridforming inverters, which provide synthetic inertia. Similarly, the Dalby hybrid solar storage facility in Queensland combines solar energy with BESS to create dispatchable, reliable renewable power. One of Australia’s first true hybrid projects, Dalby leverages recent rule changes, allowing shared grid connections.
Synchronous condensers are another solution to provide inertia and voltage regulation. They mimic
the effect of fossil fuel turbines by spinning freely and supplying reactive power, helping to maintain grid stability. Recently, as part of Ghana’s Power Compact, SMEC managed the installation of Static Synchronous Compensators (STATCOM) which perform a similar function, providing dynamic reactive power control.
length development in advanced economies and emerging market and developing economies.
Optimising existing capacity
Power grids in many countries are reaching their limits for adding new renewable energy sources, based on traditional planning and
Torrens Island BESS Dalby hybrid solar storage facility
Grid
(Announced Pledges Scenario, 2021-2050)
operating standards. Adding new transmission line capacity is not always an option due to availability of land and the complexity of the land acquisition process.
One solution is to use Grid Power Generation Curtailment. This can help optimise existing grid capacity by allowing the system to balance energy supply and demand without the need for immediate infrastructure upgrades. Replacing overhead line conductors with High Temperature Low Sag (HTLS) conductors is another option to increase the thermal capacity of a power line while reusing the existing power line structures.
In such cases strengthening and refurbishing of the existing tower or pole foundations may be required to extend the life of the plant. Determining the condition of an existing foundation through non-intrusive inspection methods can mitigate risks and eliminate the need for outages during planning and design stages.
Planning for future energy demands is as important as modernising existing infrastructure. Tanzania’s recent Distribution Masterplan Study demonstrates how SMEC contributes to long-term planning, addressing increased energy access to rural communities and the associated grid growth, demand forecasting, and the integration of distributed energy sources. This kind of forward-thinking approach ensures that future grids can meet the needs of renewable energy-driven power systems.
Modern control and monitoring systems can also enhance transmission capacity and reliability. SMEC’s power compact team in Ghana led the implementation of Supervisory
Control and Data Acquisition (SCADA) systems and Advanced Distribution Management Systems, which help to ensure grid resilience and operational efficiency. Scenario planning and network simulation capabilities can be integrated with other utility management systems to ensure real-time control capabilities.
Explore regional grid integration
Electricity trade across country and regional borders is facilitated though interconnected transmission systems. The concept is comparable to a major regional road or rail network facilitating trade of goods across borders. Due to the vast distances and capacities required, Extra High Voltage (EHV) or High Voltage Direct Current (HVDC) transmission lines are deployed.
As renewable energy installations are often far from demand centres, long-distance transmission infrastructure is essential. With the growth of renewable energy generation plants in remote locations where wind and solar resources are abundant, it is expected that multi terminal HVDC systems will also become more common place.
One ambitious proposal being considered is Sun Cable’s Australia-Asia PowerLink, which aims to transmit renewable energy from Australia to Singapore via a HVDC submarine cable. This groundbreaking project illustrates the potential for long-distance, cross-border renewable energy transmission, a critical step toward decarbonising global energy systems.
Another example is the planned ASEAN power grid, which is hoped will integrate the national power systems of its 10-member
countries and facilitate the region’s decarbonisation efforts.
Conclusion
Bill Gates remarked, “Climate change is the hardest problem humanity has ever faced, but I believe we have the human ingenuity to solve it. And if you care about climate change, you should care about transmission.”
As the global Energy Transition unfolds and the demand for clean energy increases, it has become clear that the expansion of utility scale renewable energy will rely on a dynamic and agile network of transmission grids. Grid systems need to maintain a constant balance between supply and demand with stable voltage levels and network frequency control.
As more renewable energy sources get added to grid networks, additional system inertia support will be required to absorb the impact of varying demand patterns. Through systems thinking we can implement effective systems to provide affordable, reliable, and clean energy for all.
SMEC [forming part of the Surbana Jurong (SJ) Group] has positioned our Global Energy business to develop and advance solutions that will assist with rapid decarbonisation and the reversal of devastating global warming trends. To this end our efforts in advancing transmission grid system development remain key – as the adage goes, there is no transition without transmission.
*Executive Director: Power and Gas at SMEC
**Senior Technical Principal: Power and Energy at SMEC
www.smec.com
Electricity Company of Ghana GIS spatial database
BIENNIAL PROJECT EXCELLENCE AWARDS CALL FOR ENTRIES
To recognise outstanding achievements in municipal infrastructure, we are calling for entries that showcase projects that demonstrate the best of civil engineering as a science and how engineering enhances the lives of the local communities, through excellence in:
1
ENGINEERING EXCELLENCE IN STRUCTURES & CIVILS
E.g. Projects demonstrating engineering science, use of alternate materials, innovative construction processes, etc.
Planning and design
Construction methods
Innovation and originality
Meeting social and technical challenges
Contributing to the well-being of communities
2
COMMUNITY UPLIFTMENT & JOB CREATION
E.g. Projects demonstrating labour-intensive construction, skills development, community awareness/participation, etc.
3
ENVIRONMENT & CLIMATE CHANGE
E.g. Environmental rehabilitation, renewable energy, drought solutions, coastal initiatives for rising sea levels, pollution control, educational/ technical initiatives, etc.
CLOSING DATE FOR SUBMISSIONS
03 July 2025
Only projects that have reached practical or substantive completion by 30 June 2025 will be accepted for the Excellence Awards. Adjudicators reserve the right to reallocate entries in the 3 categories.
ENTRY FORMS AND AWARD CRITERIA
Available for download on the website: www.imesa.org.za
QUESTIONS
Contact Debbie Anderson on +27 (0)83 326 3050 or email conference@imesa.org.za
All 15 piers – the tallest of which is 88 m high – were completed by the end of 2024
ANOTHER YEAR CLOSER TO DELIVERING WATER AND HYDROPOWER THE LESOTHO HIGHLANDS WATER PROJECT – PHASE II
While the increased water delivery to South Africa and hydropower generation in Lesotho expected on completion of Phase II is still a little way off, 2024 witnessed steady construction progress and several key milestones, paving the way for more positive outcomes in 2025.
Central to the process is the ongoing construction of the 165 m high Polihali Dam and the associated 38 km long Polihali Transfer Tunnel travelling to the existing Katse Dam built in Phase I of the Lesotho Highlands Water Project (LHWP). By year end, the upstream cofferdam, which was completed to design height in early 2024, was being further elevated to mitigate flood risks. Excavation of the main dam abutments, plinth areas, riverbed and spillway approach were advancing steadily, alongside rockfill placement on the trial and main dam embankments.
Early 2025 activities are focused on the main dam rockfill placement, construction of the main dam plinth and the excavation of the intake tower. The first major 2025 milestones expected are rockfill to EL 1977, construction of main dam plinth to EL 1970 and excavation of the intake tower to reach the bottom EL 1980 by mid-2025, according to the current construction programme.
Polihali Transfer Tunnel
A major milestone was marked in August 2024 with the breakthrough of the upper intake tunnel into the lower intake tunnel after seven months of tunnelling, and the commencement of
Polihali’s gate shaft excavation using the raise boring method towards the end of that month.
In early September, the first 126 pieces of the double-shielded tunnel boring machine (TBM) which will excavate the Polihali Transfer Tunnel from the Katse end, arrived in Lesotho. This after successful factory acceptance tests in China in May and a month-long voyage to Durban. From Durban the TBM pieces were transported slowly and carefully by road through KwaZulu-Natal, the Free State and via the Calendonspoort border post into Lesotho via a convoy of 90 heavy-duty trucks. Reassembly commenced shortly after their arrival on site.
By the end of 2024, significant progress had also been made on the construction of the Polihali access adit and the Polihali gate shaft. Construction of the Polihali connecting tunnel and the Katse access adit were also underway.
The first early 2025 milestone was an event on site at Ha Bereng, Leribe, on 15th January to launch the TBM excavation from the Katse end of the tunnel. The event proceedings included the traditional naming of the TBM following a nationwide naming competition. “Khoiti ea ‘Ngoaha Kholo2” (“the rat mole of 200 years”) is now set to commence excavation.
The second TBM, which will excavate from the Polihali end of the tunnel, is expected to reach
site towards the middle of 2025. Excavation of the Polihali Transfer Tunnel is expected to take approximately 2,5 to three years, excavating from both ends.
Access roads
Roads and bridges are critical components of the Phase II infrastructure. By the end of 2024, the three main access roads – the Polihali Western Access Road (PWAR), Polihali North East Access Road (PNEAR) and the Northern Access Road (NAR), constructed as part of the advance infrastructure, were nearing final completion but had been open for traffic for some time already. The access roads, now completed, facilitate the transport of heavy equipment and ensure efficient connectivity to Maseru via the A1 road.
Major bridges
The Senqu Bridge, the largest of three spanning the Polihali reservoir, is over 70% complete. All 15 piers – the tallest of which is 88 m high – were completed by the end of 2024. The casting of the first four segments (112 m) of the northern and southern decks had also been completed (approximately 25% of the total deck). The next major milestone was the completion of the pylons and the
The Senqu Bridge, the largest of three spanning the Polihali reservoir, is over 70% complete.
Once the Polihali Dam is completed and the reservoir fills up, almost the entire Senqu Bridge supporting structure will be under water
erection of the first support cable stays at the end of January 2025.
Steady progress was also made on the Mabunyangeng and Khubelu bridges during 2024. Construction of the eight piers of the Khubelu bridge and the piling for the Mabuyaneng bridge piers was complete by yearend, with the piling of Abutment A3 completed at the end of January 2025. Combined progress as at mid-January 2025 stood at 47,38%.
A feeder roads and bridges programme complements the construction of the access roads and the major bridges. Its purpose is to mitigate the impact of the Polihali reservoir on local communities, restoring or improving access to facilities such as schools, markets and clinics, as well as integrating existing and resettled villages into the national road network.
Project housing
The Polihali Operations Centre, housing the Lesotho Highlands Development Authority’s (LHDA’s) Polihali Office and consultant offices, was completed towards the end of 2024. The refurbished Katse Lodge and Katse Village offer enhanced visitor experiences, while the completed Polihali Commercial Centre will soon host retail businesses, benefitting local communities.
Hydropower
Beyond water transfer infrastructure, the hydropower component also gained momentum.
In late 2024, the LHDA awarded two contracts marking a significant step forward in the development of the Phase II hydropower component, namely the Oxbow Scheme.
Details of the awards are as follows:
• Engineering – Design and Construction
Supervision: The successful bidder is a joint venture comprising Lesotho, South African, and international firms, namely Artelia (France), SMEC International (Australia), SMEC South Africa and GWC Consulting Engineers (Lesotho) in keeping with the tenets of the Phase II Agreement to ensure competitiveness, transparency, cost effectiveness and quality. The contract, which is valued at approximately R824 million, is expected to take 92 months to complete. Work commenced in early January 2025.
• ESIA: The successful bidder is the ELC, Greenway and Green Gold Joint Venture. The joint venture comprises ELC Electroconsult S.p.A. (Italy), Greenway Consultancy (Lesotho), and Green Gold Group (South Africa). The R12,5 million contract, awarded in mid-November, is expected to be completed within a year, commencing in January 2025.
ABOUT LHWP PHASE II
Once completed, Polihali Dam will create a massive body of clean water that will cover more than 5 000 hectares, adding approximately 2 325 million m 3 in storage capacity to the existing scheme, comprising the Katse and Mohale Dams completed in 1997 and 2002, respectively, during Phase I. This will translate into an increase in water volumes from 780 to 1 270 million m 3 per annum, mainly to supply Gauteng and allied regions.
Phase I tunnel maintenance
In the meantime, a routine tunnel inspection and maintenance programme on LHWP Phase I infrastructure is progressing steadily. Works commenced in October 2024, with maintenance expected to conclude at the end of March 2025. The network consists of a transfer tunnel linking Katse Dam with Muela Power Station and Muela Dam, and a delivery tunnel linking Muela Dam with the Ash River Outfall Works between Clarens and Bethlehem in South Africa.
Speaking at the TBM launch event earlier in January 2025, LHDA CE Tente Tente, said: “Phase II is not only about water transfer and hydropower infrastructure. It is also about maximising economic benefits for the two countries; it’s about creating jobs, growing small to medium sized businesses, skills development, investment in the development of young professionals and rehabilitation of the environment. We are confident of the project’s continued steady progress and of delivery benefits to both Lesotho and South Africa by 2028 and beyond.”
By the end of 2024, significant progress had been made on the construction of the Polihali access adit and the Polihali gate shaft
Commissioning in progress on one of two double-shielded tunnel boring machines employed for the construction of the Polihali Transfer Tunnel
HEALTHY WETLANDS, THRIVING COMMUNITIES
World Wetlands Day (WWD), observed annually on 2nd February, promotes wetland conservation and awareness. This year’s theme, “Protecting wetlands for our common future”, highlights the urgency of preserving these ecosystems.
Wetlands cover only 2.4% of South Africa’s area, with around 300 000 remaining, but half have already been lost. Of South Africa’s 791 wetland types, 48% are critically endangered, 12% endangered, 5% vulnerable, and 35% least threatened.
Urbanisation is one of the primary drivers of wetland loss. In 2023, South Africa's urban population increased to 41,6 million, reflecting a 1.58% growth compared to 2022. By 2030, the numbers are expected to reach levels of about 71% and by 2050, eight out of ten people will be residing in urban areas. This creates competition for land needed for agriculture, infrastructure, and urban green/blue spaces like grasslands, wetlands, rivers, and plant communities vital to our biodiversity.
What are Urban Wetlands?
Urban wetlands are found in and around cities and can be natural or artificial. They are known as the “city's kidney” or “biodiversity library”;
they purify water and support diverse species.
Natural wetlands include rivers, lakes, marshes, floodplains, and mangroves, while artificial ones include ponds, stormwater sites, drains, and canals.
Benefits of Urban Wetlands
• Water Purification: Wetlands filter pollutants and absorb heavy metals.
• Flood Mitigation: They reduce the velocity and force of water entering the wetland ecosystem. Water is gradually released into the neighbouring environment, thereby mitigating the likelihood of sudden, destructive floods.
• Support Rich Biodiversity: Serve as habitats and breeding grounds for diverse species, including the rare and endangered ones.
• Regulate Urban Microclimates: They cool down cities and create a balanced environment.
• Socio-Economic Benefits: Provide sustainable resources like bulrushes for crafts and facilitate sustainable fishing for communities.
How can you make a difference?
• Control Pollution: Incorporate waste management methods to stop pollutants and waste from being dumped into wetland regions. Implement pollution traps on drainage pipes leading into wetlands.
• Support Natural Water Flow: Ensure drainage systems do not disrupt the wetland's water supply and avoid blocking natural waterways that alter its hydrology.
• Adopt Sustainable Urban Planning: Avoid building near wetlands. Use green infrastructure like rain gardens and permeable pavements to reduce runoff and mimic natural water infiltration.
• Foster Collaboration: Collaborate with communities, scientists, NGOs, and authorities to develop conservation plans and promote cross-sector efforts in wetland preservation, funding, and research.
• Advocate for Policy and Awareness: Support regional laws and programmes to protect urban wetlands and ensure they are included in urban development plans through local planning committees as well as municipal/ metro environmental policies.
• Creation of Additional Habitats: Constructed wetlands for greywater treatment also create habitats that support local ecosystems, aiding conservation efforts.
Urban wetlands are threatened by urbanisation and climate change, with only 11% of South Africa's wetlands protected. Over 70% remain unprotected, highlighting the need for urgent conservation, especially with water scarcity. Visit www.worldwetlandsday.org to learn how you can get involved.
Stopping pollutants and waste from being dumped into wetland regions is vital for their longterm preservation. (Photo credit: Love to Know)
Urban wetlands are found in and around cities and can be natural or artificial. (Photo credit: ArcGIS)
Wetlands provide sustainable resources like bulrushes for crafts and facilitate sustainable fishing for communities.
(Photo credit: Wetlands International)
WATER INFRASTRUCTURE AND EQUIPMENT MAINTENANCE: A STRATEGIC NECESSITY
As companies and municipalities face challenging economic times, they are required to get more out of their water infrastructure and equipment. By extending replacement cycles for pumps, filters, mixers, and other components, the costs of replacements are deferred.
However, without regular maintenance, this approach can backfire – leading to underperformance, breakdowns, and eventually, expensive catastrophic failures that will necessitate replacement.
“Anyone who has driven an under-maintained car knows it's a case of diminishing returns,” says Chetan Mistry, Strategy and Marketing Manager at Xylem Africa. “Fuel consumption goes up, performance declines, and once one thing breaks, it often triggers a domino effect of other issues. Similarly with water systems, under-maintenance invites trouble, but unnecessary scheduled maintenance has its own drawbacks. The key is to strike a balance that ensures both longevity and cost-efficiency.”
According to the Water Research Commission, annual maintenance of infrastructure like pipelines or pump stations can cost less than 1% of their replacement value. By contrast, poor maintenance can reduce a pump's lifespan by 30% to 50%. The cost of failure extends far beyond the direct cost of repair and replacement of equipment and includes secondary impacts such as contamination and service interruptions.
Benefits of PMAs
This is where preventative maintenance agreements (PMAs) stand out as a solution in the shift away from reactive to condition based maintenance. A well-designed PMA offers numerous benefits, including:
• Predictable maintenance budgets
• Detailed equipment status reports after each inspection
• Priority service from authorised technicians
• 24-hour emergency response guarantees
• Unlimited telephone support
• Extended warranty protection for equipment Original equipment manufacturers (OEMs) are uniquely positioned to deliver high-value PMAs.
By auditing a site’s equipment and tailoring maintenance plans to its budget and scope, OEMs can offer solutions that meet both operational and financial needs.
PMAs save costs in three key ways:
• Proactive issue resolution: by addressing potential problems early and using OEM replacement parts, PMAs reduce the likelihood of failures.
• Fewer site visits: with lower failure rates, inspection intervals are tailored to the equipment in use and the specific site conditions. Inspections may vary from four to one inspection per year.
• Access to skilled technicians: PMA clients benefit from expert technicians who complete tasks efficiently, without incurring additional costs for critical repairs or advanced workshop services.
“Maintenance is resource-intensive, requiring staff, money, and time,” explains Mistry. “While some tasks can be handled by on-site teams, they often have competing priorities. Unexpected or critical repairs can become prohibitively expensive. A PMA alleviates this burden, providing predictable costs and ensuring equipment up-time.”
As a further benefit, PMAs are not limited to a specific vendor’s products. Leading OEMs, such as Xylem, have the expertise and resources to service third-party equipment. This flexibility ensures that all systems on-site remain productive.
“When it comes to maintaining water systems, the right PMA ensures equipment keeps doing its job – efficiently, reliably, and within budget,” Mistry concludes.
Chetan Mistry, Strategy and Marketing Manager at Xylem Africa
A NEWgenerator off-grid sanitation system installed for an Eastern Cape school
Sanitation solution delivers at Eastern Cape schools
WEC Water has recently supplied and installed NEWgenerator™ off-grid sanitation systems at 15 schools in the Eastern Cape to address undignified and unsafe conditions.
“Historically, many of the schools involved in the project have relied on pit latrines, which have proven to be unhygienic. In addition, the schools are located in areas where water is scarce, and the electricity supply is erratic.
The NEWgenerator addresses these challenges in a few unique ways,” says Ntwanano Mandlazi, Project Engineer at WEC Water, adding that the compact and modular design of the NEWgenerator makes it easy to transport, install and commission on site.
Each NEWgenerator is built into a 6 m refurbished shipping container and consists of an anaerobic baffled reactor, membrane filtration, a nutrient capture system (NCS) and disinfection, with power provided by 10 solar panels, making it a truly off-grid solution. The systems also allow for remote monitoring by the WEC Water team and are supported by a five-year operations and maintenance contract.
To date the systems have been deployed at schools in Stutterheim, Qonce, Zwelitsha, Mthatha, Peddie, Ngqeleni, Port St Johns and Sterkspruit.
Downstream reuse benefits
Capable of processing 1 250 ℓ of wastewater per day, blackwater from toilets and basin water is treated through biological, physical and chemical processes to a quality suitable for reuse as flushing water in a virtually closed loop system.
Furthermore, nutrients can be recovered from the NCS and converted into nutrient-rich fertiliser. In addition, the biogas produced from the treatment process can be captured safely and utilised for cooking.
“We are particularly proud of our association with the NEWgenerator technology as it enables Africa to overcome the major challenges of access to safe flushing water and sanitation, ultimately restoring a greater sense of dignity to its people. The technology not only benefits schools, but also informal settlements, and small businesses,” Mandlazi concludes.
Each NEWgenerator is capable of treating 1 250 ℓ of wastewater per day
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THE IMPORTANCE OF SAFETY IN SEWER CLEANING
Sewer cleaning is an essential task but can be dangerous – an observation underscored by a recent tragedy in Benoni, Gauteng, during October 2024 when three plumbers lost their lives while unblocking a line.
The risks of such tragedies occurring can be significantly lowered by adopting proper safety protocols and using the right equipment for the job,” says Sebastian Werner, MD at Werner Pumps, a local manufacturer of high-pressure jetting and vacuuming trucks often used in sewer maintenance.
“Most people don’t spend a lot of time thinking about sewer maintenance, but those of us who work in the industry know how dangerous it can be,” says Werner. “Common risks include toxic gases, such as methane and hydrogen sulphide, as well as biological hazards, and confined spaces. It’s critical to address these risks to protect workers and to ensure compliance with occupational health and safety standards.”
Werner says there are several safety measures that need to be considered whenever undertaking sewer maintenance or cleaning. These include:
• The importance of personal protective equipment (PPE), such as gas detectors and harnesses.
Safety equipment supplied by Werner Pumps includes this special tripod device, designed to lower or lift personnel during sewer maintenance operations
• The role of training in hazard recognition and emergency response.
• Implementation of confined space entry protocols and ventilation systems.
• Regular maintenance and inspection of equipment to ensure reliability.
“Of course, big cleaning and maintenance jobs require the right equipment, such as jetting trucks, and these need to be correctly operated too,” says Werner.
“Modern trucks have built-in features to help with this, such as gas monitors, and you can also customise your truck unit to ensure it meets the demands of the types of jobs you tend to do. There are also features available, such as remote operation, that allow operators to work from a safe distance, minimising direct exposure to hazards.”
He suggests that investing in the right equipment not only improves efficiency and reduces downtime but also prevents accidents and prevents fines for non-compliance.
“At Werner Pumps, we provide operator training with every truck we hand over to a customer because we believe safety always comes first,” he continues. “We also supply a range of safety equipment, such as a special tripod device that can be used to more safely lower or lift the operator. We use these in our own rental units too.”
“What happened in Ekurhuleni was a heartbreaking situation and we are doing our best to ensure that none of our customers will ever experience something similar,” Werner concludes.
A City of Ekurhuleni rescue vacuum unit manufactured and supplied by Werner Pumps
Water conservation strategies for sustainable construction
In South Africa, water is scarce, making it essential to develop smart water habits now.
Water, a resource that has been readily available for use by us, and long misunderstood to be plentiful, has in recent times outlined just how scarce a resource it is, particularly in our day-to-day activities, under climate change.
Water utilities face mounting pressure due to diverse climatic conditions such as droughts and flooding events. Added to this, the No Drop report has also indicated that water losses account for 40.8%, or 1.79 million m³. We lose most of our water due to issues like burst pipes, overflowing reservoirs, leaking connections, and inadequate or non-existent metering, which is a sign of the state of the water system. This underscores the vital importance of implementing water conservation strategies to encourage water efficiency in the world of construction.
Why water conservation is vital in construction
According to Global Data, the South African construction market is expected to increase at an
average annual rate of more than 3% from 2024 to 2027. This increase is attributed to investments in transportation, energy, industrial and housing developments. This expansion directly impacts water consumption, as construction is a waterintensive industry.
The significant water footprint is in connection to construction activities, starting from site preparation, concrete mixing, equipment cooling, and post-construction tasks, including plumbing to landscaping. As construction projects grow, so does the need for water, emphasising the importance of sustainable water management strategies in the industry.
Smart tips for water-wise construction practices
• Use Alternative Water Sources: To alleviate the pressure on potable water, construction sites can utilise rainwater, greywater, and reclaimed water for non-potable purposes such as equipment washing and dust suppression.
• Adopt Efficient Technologies: Without sacrificing on quality, water consumption can be decreased by incorporating a closed loop water recycling system. High-pressure, lowvolume washers, and water-efficient concrete mixing technologies can also be incorporated into operations.
characteristics efficiently manage stormwater in addition to conserving water.
• Plan Landscaping Wisely: Post-construction landscaping should include hydrozoning, where plants are irrigated according to their specific water needs, reducing water waste. Installing drip irrigation also ensures efficient water use.
• Prevent Water Loss Through Leak Management: A leaking tap dripping once per second can waste over 11 000 litres (approximately 73 bathtubs to the brim) of water annually. Thus, regular maintenance and inspections of plumbing, fixtures, and irrigation systems are essential to prevent water waste.
• Educate and Train Workers: Empower contract workers on the team with water conservation practices through awareness campaigns and promote an accountable culture. Simple practices, such as turning off the water while not in use, can result in large financial savings. Embracing water conservation during construction is more than just a responsible choice – it’s a strategic one. Reduced water usage lowers project costs, minimises delays caused by water shortages, and aligns with global calls for sustainable development.
• Design and Plan for Water Efficiency: Waterefficient building design is a fundamental component of sustainable construction. Include water-saving elements in building plans, such as rain gardens, water retention systems (reduce run off), and permeable pavements (recharge groundwater). These
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Permeable pavements are an effective stormwater control measure. (Photo credit: The Pavement Movement)
Construction sites can utilise rainwater, greywater, and reclaimed water for non-potable purposes. (Photo credit: JP Propertydev)
A leaking tap dripping once per second can waste over 11 000 litres (approximately 73 bathtubs to the brim) of water annually. (Photo credit: Airtasker)
Water-efficient concrete mixing technologies all help to lower on-site water consumption. (Photo credit: Lino Sella World)
Ensuring quality and compliance in thermoplastic piping systems
Within South Africa’s competitive manufacturing landscape, ensuring product quality and compliance with industry standards is paramount. In this article we explore the critical need for robust quality control (QC) processes in manufacturing thermoplastic piping systems, including PVC, HDPE and PVC-O – all key to maintaining a safe and sustainable water network.
By Ian Venter
South African National Standards (SANS), such as SANS ISO 4427 and SANS ISO 4437, provide polyethylene (PE) pipes and fittings guidelines. However, these standards, along with SANS 966-1 (PVC-U), SANS 966-2 (PVC-M), and SANS 16422 (PVC-O), need to be effectively applied to all thermoplastic piping systems. A comprehensive approach is therefore needed to achieve consistent quality and compliance, with an emphasis on taking a pragmatic stance to standards implementation.
The role of the SABS National Norm
The SABS National Norm is the framework for developing and maintaining the SANS system. Essentially, the SABS – alongside other locally and internationally recognised certification bodies – provides conformity assessment services to verify whether companies’ products meet the required standards.
However, the effectiveness of the SABS National Norm is heavily influenced by how well it is understood and applied by those within the industry, including manufacturers, installers, and professionals. Here there are observable gaps in practical application that need to be addressed through education and process improvements.
Key challenges
Several key challenges in the South African thermoplastic piping industry affect standards compliance. These include:
• Variations in material quality: Ensuring that raw materials meet the specified requirements of the SANS standards is crucial. This includes verifying that compounds meet the requirements outlined in standards such as SANS ISO 4427-1 Table 1, and that compliance is verified through independent test results. It is also essential to validate every compound’s Minimum Required Strength (MRS) through
a SANS ISO 17025 accredited laboratory, according to ISO 12162. This validation should include compounds for SANS 966-1, SANS 966-2, and SANS 16422.
• Manufacturing process variability: The manufacturing process must be consistently monitored to ensure that all components are from the same compound batch (virgin or reprocessed) and that measurements fall within the specified variance. The supplier must have the appropriate quality management system (QMS) certification, such as ISO 9001:2015.
• Inadequate technical skills: A lack of technical expertise among professionals in the industry can lead to poor QC practices and an insufficient understanding of SANS requirements. This is a significant issue that needs to be addressed.
ABOUT THE AUTHOR
A former technical manager at the Southern African Plastic Pipe Manufacturers Association (SAPPMA), Ian Venter launched Polymers and Piping (fittings) Systems South Africa (PPfSSA) in June 2024. The company specialises in consulting on how manufacturers and end users can consistently achieve highquality thermoplastic products; and providing comprehensive solutions for piping systems. Ian holds a National Higher Diploma in Polymer Technology and has significantly contributed to advancing industry standards in his field.
For further information, phone +27 82 770 8244 or e-mail: IanVenter@PPfSSA.com.
• Infrequent audits: Certification bodies sometimes conduct audits sporadically, which may lead to lapses in oversight and potential non-compliance. Regular audits are essential to maintain quality standards.
• Resource constraints: National Technical Committees face challenges related to resources, funding, personnel and specific technical expertise, which can affect their ability to ensure that the certification processes are consistent and robust.
• Limited understanding of conformity assessment: A lack of understanding of conformity assessment principles can lead to ineffective processes and stakeholder misunderstandings, undermining standard effectiveness.
• Communication: There could be better communication between certification bodies and those seeking certification regarding close-out procedures and what is expected.
Ensuring quality and compliance –a comprehensive approach
To address these challenges, a comprehensive QC process must be implemented. This process should be adaptable to PVC, HDPE
and PVC-O piping systems and should focus on key areas in terms of material and manufacturing process verification.
From a material perspective, for example, melt flow rate (MFR) verification is key. For this purpose, QC manufacturing personnel need to obtain a letter or report confirming the MFR value from the compound producer. It must fall within the required variance range, as verified against the producer’s lab results.
Post-processing MFR examination is equally important. This QC step evaluates any change in MFR after processing, which then needs to be documented for potential product defects.
PPfSSA’s role in QC compliance
At Polymers and Piping (fittings) Systems
South Africa (PPfSSA), we are playing an instrumental role in addressing the QC gaps through dedicated training progammes.
PPfSSA programmes offered include:
• SANS interpretation courses: designed to provide professionals with the skills to accurately interpret and apply SANS standards relevant to thermoplastic piping systems.
• Practical installation training: handson training focused on ensuring correct installation techniques that adhere to SANS standards.
• QC workshops: designed to provide companies with the skills and tools required to implement and maintain QC processes.
• Customised training: developed to meet the specific needs of different organisations within the thermoplastic piping sector.
• Awareness programmes: designed to ensure stakeholders are aware of relevant SANS standards and understand the importance of compliance.
Conclusion
By taking a collaborative approach, involving manufacturers, certification bodies, professionals, contractors, and training providers like PPfSSA, we can establish a robust system that builds confidence in all thermoplastic piping production and application aspects. The focus should always remain on closing the QC gaps and improving overall technical proficiency to enable safe and efficient water infrastructure.
MINING | INDUSTRY | MUNICIPAL | AGRICULTURE | FOOD AND BEVERAGE | FIRE FIGHTING
BIM AND ITS ROLE IN TRANSFORMING MUNICIPAL OPERATIONS
Building Information Modelling (BIM) is not just 3D models or digital software; it is a transformative process that standardises how infrastructure projects are designed, constructed, and managed using information management processes. At its core, BIM is a collaborative approach that integrates 3D models with rich data, enabling stakeholders to make informed decisions throughout the lifecycle of an asset.
By Selvan Murugan and Machiel Odendaal
Unlike traditional methods, BIM offers a digital, dynamic, real-time visualisation of infrastructure –information management from conceptualisation to decommissioning.
For municipalities, in particular, BIM provides an excellent opportunity to improve service delivery, optimise resource allocation, and ensure that infrastructure meets the evolving needs of communities. As infrastructure improves across South Africa, leveraging BIM can help local governments plan and manage infrastructure more while aligning with sustainable development goals.
The South African BIM SANS 19650 initiative
South Africa has made significant strides in driving the adoption of the ISO 19650 standards locally for managing information over the lifecycle of a built asset using BIM. This initiative promotes a structured and consistent approach
to information management, ensuring alignment with standardised, global best practices. Through active collaboration among industry leaders, municipalities, and academic institutions, the country is laying the groundwork for more efficient and effective use of BIM in projects.
The implementation of SANS 19650 will not only enhance project delivery but also facilitate better communication and transparency among stakeholders, ultimately driving value for municipalities and the broader construction industry.
The value of BIM in general
The value of BIM lies in its ability to use information management processes to foster collaboration, minimise errors, and reduce project costs and timelines. By offering a single source of truth, BIM ensures that all stakeholder, from architects and engineers to contractors and facilities managers, have access to accurate and up to date information.
This transparency significantly reduces the risk of costly misunderstandings and rework.
Additionally, BIM, in the design phase, facilitates advanced simulations and analyses, enabling the prediction of performance, environmental impact, and maintenance requirements before construction even begins. These capabilities empower decision-makers to adopt proactive approaches, ensuring infrastructure resilience and longevity. Furthermore, BIM’s integration of cost and schedule data (4D and 5D BIM) streamlines project planning, optimising financial and operational efficiency.
How BIM creates value for municipalities
For municipalities, BIM is more than a technology upgrade, it is a strategic enabler for better governance and service delivery. By adopting BIM, municipalities can achieve:
• Enhanced infrastructure planning and design: BIM allows for detailed analysis of proposed designs, ensuring alignment with municipal objectives and community needs. For example, municipalities can simulate traffic flow, assess environmental impacts, and optimise utility layouts before construction begins.
• Improved asset management: BIM provides a comprehensive digital record of infrastructure assets, including their location, condition, and maintenance history. This information enables municipalities to prioritise repairs, schedule maintenance, and extend the lifespan of critical infrastructure.
• Cost efficiency: By minimising errors, reducing rework, and streamlining construction processes, BIM can significantly lower capital expenditure. Additionally, its predictive capabilities can help municipalities allocate budgets more effectively, avoiding unforeseen expenses.
• Sustainability and compliance: BIM’s ability to model energy usage, water consumption, and carbon emissions supports municipalities in achieving sustainability goals and complying with regulatory requirements.
• Community engagement: BIM’s visualisation capabilities allow municipalities to present clear and compelling plans to stakeholders and the public, fostering trust and collaboration.
Selvan Murugan, Digital Practice Leader, Cape Town and Coastal at Zutari
• Capturing of existing infrastructure: BIM and other technologies allows the re-capturing of existing infrastructure assets to revitalise current infrastructures.
Requirements for municipal BIM adoption
To realise the benefits of BIM, municipalities should be thoughtful in their infrastructure that supports its implementation and growth. It is important to note that municipalities can begin their BIM journey incrementally, starting with pilot projects or specific departments before scaling to broader applications. The information below outlines the requirements for a comprehensive, full-scale BIM implementation. Municipalities should use this as a guide but must tailor their approach based on their unique operational needs and resources. It is essential to “think big” but start small and adopt a phased approach that aligns with their current capabilities and gradually expands as they build expertise and capacity in BIM processes and technologies over time.
The key requirements include:
1. Hardware
• Relevant performance servers and workstations capable of handling complex 3D models and large datasets.
• Reliable, managed storage solutions, such as network-attached storage (NAS) or cloud-based platforms, to manage extensive data securely.
• Advanced networking capability to facilitate seamless collaboration across departments and external stakeholders.
2. Software
• BIM authoring tools such as Autodesk Revit, Bentley Systems’ OpenBuildings, or Graphisoft ArchiCAD, etc.
• Collaboration platforms like Autodesk Construction Cloud or Bentley’s ProjectWise to enable efficient data sharing, etc.
• Simulation and analysis tools for specialised tasks like energy modelling and structural analysis.
• Common Data Environment (CDE) integrated platforms to serve as a centralised hub for all BIM-related data and documents.
3. People
• Skilled personnel, including BIM managers, coordinators, and technicians, with expertise in using BIM tools and processes.
• Training programmes to upskill existing staff and ensure consistent application of BIM standards.
• Inter-departmental collaboration to integrate BIM into municipal workflows effectively.
• Collaboration with supply chains and service providers for complete deliverable realisation.
4. BIM capital investment
• Initial capital outlay for hardware, software, and training.
• Allocating funds for annual software licensing and subscription costs.
• Provision for upgrading IT infrastructure as BIM technologies evolve over time.
5. Maintenance costs
• Regular updates and patches for software tools.
• Hardware maintenance, including server upgrades and network management.
• Continuous professional development to keep people abreast of advancements in BIM technology.
6. Common Data Environment (CDE)
• A secure and scalable CDE to store, manage, and share BIM data. This platform ensures that all stakeholders have access to accurate and upto-date information, promoting transparency and collaboration.
• Integration capabilities with Geographic Information Systems (GIS) to enhance spatial analysis and decision-making is also required.
7. ICT backbone
• High-speed internet connectivity to support data and information intensive BIM workflows.
• Resilient network infrastructure with suitable redundancy to ensure uninterrupted operations.
• Cybersecurity measures to protect sensitive BIM data from breaches and unauthorised access.
• Scalable IT architecture to accommodate future growth as municipalities expand their BIM capabilities.
CALL TO ACTION FOR MUNICIPALITIES
Municipalities are encouraged to start their BIM journey today by assessing their current capabilities and planning for future investments in technology and skills. Partnering with BIM experts and engaging with platforms like BIMcommUNITY can accelerate adoption and maximise value. By embracing BIM now, municipalities can lay the foundation for smarter, more sustainable cities that serve their communities effectively and efficiently.
Introducing the
By fostering collaboration, sharing knowledge, and promoting best practices, the community aims to empower users and drive innovation in the South African construction and infrastructure sectors. This vibrant network serves as a hub for resources, events, and discussions that enhance BIM adoption and implementation, with the goal of enabling the country to harness the full potential of digital transformation in the built environment.
8. Process Alignment
• Staying up to date with the developments of the SANS 19650 standards (local and international).
• Development of key processes and frameworks for BIM-enabled projects.
• Understanding of open standards in the delivery of BIM deliverables.
Conclusion
BIM represents a transformative opportunity for municipalities to modernise infrastructure planning, construction, and management. However, the successful adoption of BIM realises on understanding and preparing for its implications as well. Municipal leaders must ensure they invest in the right hardware, software, and people while also addressing capital and maintenance costs. By proactively planning and building this digital capability, municipalities will not only enhance service delivery but also position themselves to meet the challenges of tomorrow with resilience and innovation.
ENGINEERING NATURE'S FURY
1
2 3
1 A section of the original dry streambed
2 A restored streambed section elevation matching pre-construction levels
3 The foundation comprised a 300 mm deep gabion mattress extending 3 m from the front of the base layer, composed of 2 m by 1 m gabion baskets
In the heart of a thriving wildlife corridor near South Africa's Sabie River, a bold vision for a luxury villa development bordering the Kruger National Park is taking shape. Nestled along a historically active dry waterway that converges with the Sabie River, this project poses a unique engineering challenge: creating world-class infrastructure while preserving the delicate ecological balance of this biodiverse region. By Fanie Joubert Pr Eng*
The seemingly benign dry riverbed transforms into a formidable force during seasonal floods, reshaping the landscape with powerful erosive energy. Flowing southward at an angle of approximately 70 degrees towards the Sabie River, the watercourse makes a sharp westward turn of 60 degrees before executing a tight 10 m radius bend. This geological pinch point is notorious for accelerating water velocity and intensifying erosive forces.
Approximately 100 m downstream, the riverbed veers southward again with a dramatic 90 degree turn, creating a rectangular development zone of about 80 by 100 m, bounded by the riparian zones of the Sabie River and the dry riverbed.
Flooding events have left their marks on the landscape, with the steep, vertical faces of the outside embankment testifying to the water’s relentless force. The uprooted trees scattered across the area are evidence of past hydrological violence. Among the survivors are two majestic Jackalberry trees (Diospyros mespiliformis), precariously leaning towards
Gabion wall construction in progress. Spanning 50 m in length and consisting of three layers, each 1 m high, the structure was carefully aligned to match the 1:100-year flood level
the riverbed, their root systems compromised by erosion and threatened with imminent collapse during the next flood event. The loss of these iconic trees would not only be an ecological tragedy, but also a significant aesthetic loss for the estate.
A harmonious engineering solution
To address this complex challenge, a gabion structure emerged as the optimal solution. This innovative approach, combining structural integrity with environmental sensitivity, aimed to stabilise the embankment, protect the existing vegetation, and safeguard future developments. Gabions, with their interlocking mesh filled with carefully selected stones, offer a durable and aesthetically pleasing solution that blends seamlessly with the natural environment, while delivering longlasting performance.
To protect the soil covering the gabion structures, and to encourage plant growth, a layer of SoilSaver was applied. This innovative biodegradable erosion control blanket naturally decomposes within one to three years, leaving minimal environmental impact
Technical execution and collaboration
The project's success was ensured through collaboration between industry leaders, namely:
• Project engineer: Stefan Triegaardt of Consolv Consulting Engineers
• Design engineer: Fanie Joubert from Civil Structural & Eco-Engineering
• Construction specialist: Gabion Guru, and
• Project manager: Mike Gillard Together they ensured that the final design met both engineering and ecological objectives, especially in terms of preserving the Jackalberry trees, which were safeguarded by the design.
Beyond the structure:
A holistic approach
The project extended beyond the construction of the gabion wall. To minimise disturbance to the environment, a detailed survey was conducted to identify the most favourable alignment for the structure. In collaboration with the client, the decision was made to cover as much of the gabion structure with topsoil as possible, further integrating the structure into the natural landscape.
The gabion wall design was tailored to address both immediate and long-term challenges. Spanning 50 m in length and consisting of three layers, each 1 m high, the structure was carefully aligned to match the 1:100-year flood level. The foundation comprised a 300 mm deep gabion mattress extending 3 m from the front of the base layer, made of 2 m by 1 m gabions. Each successive layer, stepped back by 500 mm, created a stable and aesthetically pleasing terraced effect.
By projecting outwards, the gabion mattress acts as a protective barrier that disperses the force of incoming water flow, reducing its
velocity and minimising the erosive impact on the soil directly beneath the main structure. This strategic placement helps to prevent the undermining of the foundation.
The vertical backside of the structure was fortified with geotextile fabric, a critical component for preventing soil erosion while allowing water permeability, reducing the hydrostatic force of water behind the gabion wall and thereby ensuring its stability. Behind the wall, the filled area was graded to a maximum slope of 1:1.5 to avoid creating steep, vulnerable inclines. Topsoil, carefully preserved during the excavation phase, was used to cover the filled area and promote vegetation regrowth.
To further protect the soil and encourage plant growth, a layer of SoilSaver was applied. This innovative biodegradable erosion control blanket naturally decomposes within one to three years, leaving minimal environmental impact. It creates a protective layer that reduces soil movement and water runoff, provides a stable microclimate that encourages seed germination and plant growth, and helps maintain moisture in the soil, supporting initial plant establishment.
A testament to sustainable engineering Now completed, this project serves as a model for sustainable development, demonstrating how thoughtful engineering can harmonise human needs with ecological imperatives. The gabion wall becomes more than a structural element – it is a narrative of respect, resilience, and responsible construction.
The success of this initiative also underscores the potential of gabion technology as a versatile solution in addressing complex challenges in environmentally sensitive
Behind the wall, the filled area was graded to a maximum slope of 1:1.5 to avoid creating steep, vulnerable inclines
regions. As climate change exacerbates weather extremes and increases the frequency of flooding, such innovative approaches will become increasingly critical.
*Head of Civil Structural & Eco-Engineering, and Gabion Guru
of two majestic
One
Jackalberry trees that were preserved and integrated into the wall design
CAPE ARTERIAL UPGRADE UNDERSCORES THE MERITS OF RA
As an innovative response to managing its growing recycled asphalt (RA) stockpiles, the City of Cape Town embarked on a study to investigate its cost-effective utilisation. This subsequently led to the successful use of RA aggregate for the production of bitumen stabilised material (BSM) during the upgrade of a portion of Jakes Gerwel Drive.
The City of Cape Town’s Road Infrastructure Maintenance (RIM) department, which falls within the Urban Mobility Directorate, maintains a road network of approximately 10 400 km. Depending on the annual maintenance budget, the city can resurface up to 200 km of road per year. This work generally involves removing (by means of milling) the existing asphalt
wearing course and replacing it with new asphalt surfacing, either as patching, including bituminous base patching, or full width resurfacing.
In the process, the annual resurfacing programme creates large quantities of RA. This material is then hauled to the city RIM departmental depots and stored as a source of versatile material for use in various maintenance applications.
However, over time, the consistency of the resurfacing programme created a greater supply of RA than could be utilised – depot stockpiles grew to a point that became problematic. In response, the city identified the need to investigate further possible uses of RA, in higher quantities and in higher value applications, with BVi Consulting Engineers (BVi) Western Cape commissioned to carry out a utilisation study.
Three lane cross section with slow shoulder
A key study recommendation was that the highest use application for the processed RA was in the manufacture of hot (or warm) mix asphalt. This application was, however, not deemed economically or procedurally feasible. A further solution that was therefore proposed by BVi involved the manufacturing of BSM utilising recycled RA as an aggregate. This specific option was chosen and led to the establishment of a framework contract in 2019 for the establishment of a specialised recycling plant and the processing of RA into BSM at city depots. The first project implemented was at the Ndabeni depot – the city’s largest facility.
BVi was subsequently appointed to carry out the investigation and design of the rehabilitation of portions of Jakes Gerwel Drive between Bluegum Street and Viking Way in the Langa, Bonteheuwel and Epping areas of Cape Town. The detailed investigation and design report that emanated from this appointment recommended a deep rehabilitation using a new BSM base utilising RA with an asphalt surfacing. Construction commenced in January 2021 and the works were completed in September 2022.
Jakes Gerwel design
Jakes Gerwel Drive is classified as a Class U2 Urban Major Arterial by TRH26[5]. It serves economic activity centres such as Epping and the Goodwood industrial areas, as well as residential areas such as Langa and Bonteheuwel, with periodic signalised intersections. It is also the major link between Epping Industria, the N1, N2 and N7, and Cape Town International Airport.
The project was divided into two sections, namely full rehabilitation in the south between Viking Way and Bluegum Street, and maintenance in the form of patching in the
north between Frans Conradie Drive and the N7/N1 interchange ramps.
Traffic information
Based on traffic count information obtained, a precise methodology was required to accommodate characteristically heavy traffic volumes. Data showed that the northbound carriageway had a distinct peak traffic period of over 2 000 vehicles per hour between 6 and 9 am and then maintained a relatively high traffic volume of around 1 500 vehicles per hour until about 5 pm.
The southbound carriageway showed a distinct peak in the afternoon, reaching 2 000 vehicles and higher between 3 and 7 pm. During the day from about 8 am, there were also relatively high traffic volumes of between 1 500 and 2 000 vehicles per day. This high volume of traffic, along with the distinct peaks, was a very important consideration when weighing up design options.
Existing geometry
The road geometry typically consisted of three lanes in each direction, with a design speed of 60 km/h and an average width of approximately 12 m on each carriageway. The pavement investigation data indicated that the road was widened at some point and that various non-uniform pavement designs were used in the widening, creating a highly variable pavement structure across the road. The major causes of pavement distress identified along Jakes Gerwel Drive included:
• Degree 3 to 5 cracking along construction joints.
• Degree 3 to 5 crocodile cracking and associated pumping of fines.
• Degree 3 to 5 shoving and rutting of the asphalt wearing course.
Existing pavement structure
The thickness of the asphalt varied significantly, and the base materials under the asphalt varied in material type [water-
Typical daily traffic flow variations
Degree 5 surface cracking and delamination of the asphalt on a section of the slow lane
Pumping of fines through crocodile cracks in left wheel path of slow lane
bound Macadam, granular materials (ferricrete and hornfels)] and thickness. Similarly, the subbase materials also varied in material type and thickness, with test pits showing ferricrete, hornfels and granite subbase materials. The subgrades were, however, mostly a similar sand, but found at varying depths. The non-uniform nature of the existing pavement structure meant that in situ recycling was not a viable rehabilitation option.
Pavement rehabilitation design options
The pavement rehabilitation design, taking the design traffic average of 20 MESA into account, had to consider several factors:
• Address moisture ingress and moisture sensitivity – highly durable.
• Carry heavy traffic load – be fatigue and rut resistant.
• Create a safe driving surface – skid resistant.
• Create a uniform pavement structure –longitudinally and transversely for ease of future maintenance.
• During construction, accommodation had to be provided for in excess of 50 000 vehicles per day without disruptions to peak hours. Three design options were originally considered:
• Option 1: mill and replace the existing asphalt surfacing with an asphalt wearing course.
• Option 2: construct a new BSM basecourse and a new wearing course.
• Option 3: construct a new cement stabilised subbase, new bitumen treated basecourse (BTB) and new wearing course.
Option 2 met all the desired requirements – specifically the requirement to limit traffic disruption. To accommodate the high peak hour and daytime traffic volumes, work took place at night between 20h00 and 06h00. The base repair process had to be carried out in a single night-work shift to open the full road to traffic before the morning peak hour. The process entailed:
• Removing the existing asphalt wearing course and stockpiling the RA on site for re-use.
• Excavating the existing base to the desired depth. The contractor transported the excavated base material off-site for use in future projects.
• The excavation floor of the box cut was compacted before the new basecourse layer was constructed.
• The BSM, which was manufactured off-site using crushed and screened RA, was then transported to the job site.
• The BSM was placed in two layers, with the first layer being applied by either a grader or paver, depending on the subgrade material encountered, and the second layer using a paver.
The completed BSM base layer was paved 20 mm thicker than the design thickness (to act as a sacrificial layer under traffic) and was treated with the application of cationic bitumen emulsion fog spray to bind the surface before opening to traffic. The BSM surface was maintained under traffic through regular removal of loose stones. It was specified that
the base layer could only be exposed to traffic for a maximum of seven days before having to be surfaced.
The BSM was milled to the design thickness prior to the application of the surfacing, thereby removing the sacrificial layer and ensuring an even base on which to apply the surfacing.
The median island layerworks were constructed using gravel recovered from the pavement, or from BSM from the milling process. The sidewalk and shoulder layer works were also reconstructed using the existing recovered basecourse or BSM.
BSM design and manufacture
The BSM was produced through a separate contract, and the city acted as the material supplier to the main rehabilitation contract. Since BSM can only be stockpiled for up to seven days before its strength characteristics start to deteriorate, continuous monitoring and coordination was therefore essential.
BSM needs to be manufactured at temperatures above 15oC and as such the BSM contractor worked during the day producing BSM, while the rehabilitation contractor worked at night.
The results of the BSM mix design process showed that optimum strength and shear parameters were attained using 1.0% lime as an active filler and 2.0% bitumen within a 100% RA aggregate mix. Based on these results, the plant trial mix at the depot was undertaken.
BSM production
Once the mix design was determined, the trial mix at the depot was carried out. Quality control on production was undertaken by carrying out Indirect Tensile Strength (ITS) testing to ensure that a consistent product that met the specifications of a BSM 1 was being produced. The ITS results of the trial batch met the specification and production could then begin. However, the initial result of the first production runs all failed despite the mix design being correctly applied.
Production was stopped and an investigation into the cause of the low ITS results revealed that the RA stockpile had a very high moisture content – much higher than the optimum mixing moisture content and the moisture content at which the laboratory testing was undertaken.
The strength of a wet BSM is reduced because of the water acting as a lubricant and weakened particle bonding, making the material less cohesive and more susceptible to internal tensile forces. It was further determined that the higher moisture content was caused by the RA stockpiles standing uncovered for a long
Degree 5 shoving and rutting at the N2 intersection approach
time during the earlier crushing and screening that took place in preparation for this project. This was exacerbated by the first tender for the Jakes Gerwel rehabilitation contract being cancelled. A second tender period meant the stockpiles were exposed to the Cape weather for much longer than anticipated.
The problem with the high moisture content was overcome by spreading RA over a large area in a layer 400 mm to 500 mm thick and turning it over with a grader every few hours. When rain was expected, the material was brought into stockpile and covered with plastic, before being opened again in clear conditions. It was found that the moisture content was reduced by approximately 40% to 50% over the course of two days using this method. The trial mix using the dried RA materials produced satisfactory ITS results and production then continued successfully for the remainder of the project.
Problems encountered during construction
While the BSM held up to traffic loading very well for the most part, unusually heavy downpours resulted in the BSM ravelling under traffic load in certain instances, and frequent maintenance was required to ensure road user safety.
Another challenge faced by the contractor was that the actual existing layer thicknesses encountered differed significantly from the test pit results of the pre-project investigation and associated layerworks profiles. Essentially, the contractor encountered the sandy selected subgrade layer at shallower depths than expected in areas.
This resulted in issues such as the milling machine and the asphalt paver being used to place the BSM getting stuck in the subgrade
in isolated instances. The contractor was compelled to modify their construction techniques when sand was encountered. Instead of placing two BSM layers with an asphalt paver, the lower layer had to be end-tipped and spread with a grader before compaction. The second layer was then placed with a paver.
As the next Cape winter approached, a final challenge resulted in a revised construction approach for the final BSM section at the very busy intersection of Jakes Gerwel Drive and Viking Road. As temperatures dropped, it was found that the BSM was ravelling faster than expected. Instead of risking ravelling in the intersection due to high volumes of turning traffic, it was decided to carry out the intersection rehabilitation using hot mix BTB instead of BSM.
Potential savings achieved using RA BSM
In total 24 491 m3 of BSM was produced for the rehabilitation of Jakes Gerwel Drive. The total cost of the BSM contract was R24.964 million, broken down as follow:
• BSM production costs: R13.850 million
• Bitumen rise and fall: R5.816 million
• Contract price adjustment: R2.056 million
• Additional cost for drying RA: R3.242 million
The total unit cost for the production of BSM was therefore R1 019/m3, while the cost of BTB material used in the rehabilitation of the Viking Road intersection was R1 300 per tonne, which converts to approximately R3 120 per m3
Comparison based on material production cost shows that a 100 mm thick BSM layer is equivalent to a 33 mm thick layer of BTB. In
terms of structural strength, however, a 100 mm layer of BSM 1 is typically structurally equivalent to approximately 80 mm of BTB.
It is important to emphasise that the pavement was designed to be opened to traffic every morning, to limit disruption. A BTB layer is suitable for use in such a scenario. However, a BTB layer would typically be placed on a cement stabilised subbase. The latter requires longer term lane closures to allow for the layer to cure.
For the rehabilitation, the accepted pavement design was a 300 mm thick layer of BSM 1 (constructed in two layers), which equates to a structurally equivalent BTB layer thickness of 240 mm. This is, however, not a feasible design and for the purposes of comparison, an equivalent pavement design utilising a 200 mm thick cement stabilised subbase followed by a 100 mm thick BTB base would have been required. This in turn converts to 8 163m3 of BTB and 16 328 m3 of cement treated subbase. The estimated total material cost here is R25 470 640 for the BTB layer and R9 860 000 for the cement treated subbase, which equates to approximately R35 330 680. Therefore, by using a recycled RA BSM instead of an equivalent asphalt pavement, a potential saving of R10.4 million was achieved. An added benefit is that the production of BSM is a cold mix process, with only the bitumen, which constitutes 2% of the mix, needing to be heated to 180oC. This results in far less energy consumption and carbon emissions compared to BTB hot mix asphalt, where the entire volume of materials needs to be heated to above 160oC. Ultimately, what this case study shows is that utilising 100% RA BSM is a sustainable and costeffective option in fit-for-purpose applications, with strong merit for its broader adoption on road upgrade projects across South Africa. For all projects, RA is the optimum and sustainable choice for asphalt resurfacing.
This is an edited version of Paper 1: “The rehabilitation of a portion of Jakes Gerwel Drive using reclaimed asphalt aggregate for the production of BSM base”, co-authored by Ian Bowker from the City of Cape Town, and Andrew Geel at BVi Consulting Engineers Western Cape. The paper was presented at the 87th IMESA Conference in November 2024 and can be downloaded at www.imesa.org.za
Base rutting noted on site
Soweto gravel road upgrades enhance mobility
The Johannesburg Development Agency (JDA) has completed an extensive upgrade to Elias Motsoaledi Road, in the process enhancing safe mobility for Soweto’s Region D residents.
Implemented on behalf of the Human Settlements Department, the project involved converting 4,5 km of gravel roads to surfaced standards, including comprehensive stormwater drainage systems.
Guided by the City of Johannesburg’s Complete Streets concept, the upgrades are designed to accommodate diverse modes of transport, including walking, cycling, and public transport.
In line with JDA’s economic development programmes, 30% of the project’s contract value – exceeding R4,6 million – was awarded to local small, medium, and microenterprises in the ward. The initiative also prioritised local labour through an Expanded Public Works Programme (EPWP) approach.
Comments JDA CEO, Themba Mathibe: “This initiative will enhance mobility and connectivity and contribute to job creation and economic empowerment within the local community. It also complements other transformative initiatives undertaken by the JDA in Region D, including the ongoing gravel-to-asphalt road upgrades in Finetown Proper.”
Road upgrades in Region D, Soweto place emphasis on safe connectivity while building urban resilience
When short-term rentals make sense
From warehousing and logistics, to mining, fast moving consumer goods (FMCG), manufacturing, pharmaceuticals and agriculture, short-term rental solutions for material handling equipment can be game changing for operations with fluctuating or cyclical needs.
Bianca Smit, CFAO Equipment’s National Operations Manager, says this can result in significant cost savings for a business. “In addition, they can benefit from gaining access to advanced equipment and innovative technology they might otherwise have not been able to afford.”
“When businesses are starting out and not sure of their exact material handling needs, short-term rentals also make a lot of sense,” Smit continues. “They will be able to get a sense of their ongoing and future business needs before committing to purchasing machines, plus renting can help them manage their cash flow better.”
Smit highlights some of the factors to consider when choosing a material handling rental partner:
• Flexible rental terms: look for a rental partner who offers rental periods that work for your business, whether it’s daily, weekly or monthly. This ensures you only pay for what you need.
• Genuine parts: make sure to choose a rental partner that maintains and repairs equipment with genuine parts, ensuring optimal performance and longevity.
• Quick turnaround times: rental partners should offer a rapid response for technical
assistance, especially in emergencies. Check whether they offer 24-hour service to minimise downtime.
• Competitive rates: compare rental rates across providers to ensure the prices are fair and within budget. The rental cost should reflect the quality of the equipment and the level of service provided.
• Safety features and certifications: choose a partner that offers equipment with up-to-date safety features, certifications, and operator training to ensure safe use, especially in high-risk environments such as warehouses, ports and construction sites.
• Variety of equipment and customisability: the rental partner should offer a wide range of material handling equipment suitable for the specific requirements of your business. It should be the right type, size and have the correct functionality for your particular operations. Alternatively, machinery should be customisable to meet customers’ specific needs.
• Reputation and brand reviews: check the potential partner’s website and social media platforms, as well as media coverage, to ascertain their credibility and industry experience, as well as the overall sentiment for the organisation and its products from other customers.
• Energy efficiency: given the world is under pressure to choose eco-friendly options, check for energy efficiency and whether the equipment is powered with lithium-ion or lead-acid batteries.
• Customer service: responsive customer service is key, as is the potential partner’s ability to offer personalised solutions and, ultimately, nurture long-term relationships. Having a dedicated customer service team that is easily reachable and responsive is critical to maintaining operations without disruptions.
Smit says businesses need to do their homework when choosing a rental partner. “It would be counter-productive, even devastating, to choose the cheapest or quickest option and then discover the machines are prone to breakdowns or are not properly supported,” she explains.
“It’s important to look for rental agreements that offer flexibility, transparency and a high level of support. Being clear on the terms for delivery, usage, penalties and training is critical and can help avoid pitfalls. By understanding these elements upfront, businesses can maximise the value from their rental agreements while minimising unexpected costs or disruptions during peak periods,” Smit concludes.
ASTEC SHUTTLE BUGGY BOOSTS N2 ROAD PROJECT
The Shuttle Buggy’s ability to save time and costs while improving road quality has made it a crucial piece of equipment on road construction, maintenance and rehabilitation projects around the world.
One of the most advanced and innovative Shuttle Buggies on the market, the Astec SB-3000, is currently enhancing roadworks on the N2 at George in the Western Cape. The machine, which Astec Industries has supplied on a rental basis to longstanding customer, Road Milling and Sweeping (RMS), is proving its mettle on this important South African road project, and demonstrating how superior equipment ensures success and road surface quality, says Astec product sales manager Philip Saunders.
The Shuttle Buggy is a Material Transfer Vehicle (MTV), which was a novel concept when Astec Roadtec introduced its first Shuttle Buggy in 1989. Before this, road surface failure due to asphalt segregation was a recurring problem. Delivery trucks would have to dump hot mix asphalt (HMA) directly into the paver, which caused numerous problems. Engineers realised that being able to re-mix the HMA before feeding it to the paver was the key to increasing road surface quality. This prompted the development of the earliest Shuttle Buggy to transport and remix HMA between the asphalt truck and paver.
“Thermal segregation is one of the reasons that asphalt road surfaces fail prematurely,” explains Saunders. “Another reason is aggregate size segregation, which is caused by
A fully laden SB-3000 holds 30 tons of mix. By using a hopper insert in the paver, that can be increased by 15+ tons when combining the capacities of the Shuttle Buggy and the paver
the same movement of the delivery vehicle as thermal segregation. Even a new road surface can show segregation spots – both thermal and aggregate size segregation – caused in great part by the delivery truck.”
Offering an unrivalled solution to this problem, the Astec Shuttle Buggy is a mobile silo and on-site mixer for hot mixed asphalt road surfacing material. It stands between the delivery vehicle and the paver, receiving and remixing the hot material to make the temperature homogeneous. “By eliminating the effect of ‘end of load' segregation, the Shuttle Buggy doubles the road life and dramatically reduces maintenance costs,” Saunders states.
Seamless material transfer
The SB-3000 can unload a truck at a rate of 1 000 tons per hour and re-blend the material to a uniform temperature and stone size gradation. The benefits of this state-of-the-art machine include seamless material transfer for uninterrupted surfacing and reduced thermal segregation, resulting in longer-lasting roads.
Time and money are also saved. Saunders expands: “A fully laden SB-3000 holds 30 tons of mix. By using a hopper insert in the paver, that can be increased by 15+ tons when combining the capacities of the Shuttle Buggy and the paver. This enables nonstop surfacing while remixing, resulting in the best possible
mat. Each truck costs money, and every minute it waits costs money. With the SB-3000, the time needed to unload dump trucks can be reduced by 25%. In addition, this is an eco-friendly solution as the SB-3000 features electricdrive technology.”
Since the launch of Astec Roadtec’s first Shuttle Buggy 35 years ago, other manufacturers have jumped onto the Shuttle Buggy bandwagon, but not all Shuttle Buggies are created equal, Saunders stresses. The Astec Shuttle Buggy has evolved, advanced and improved over the years. “Astec Industries has worked closely with customers to optimise user experience and safety, transportability and the jobsite performance of its Shuttle Buggy. The result is the SB-3000, a powerful and manoeuvrable MTV that combines superior mixing technology with ultimate operator comfort and unparalleled safety,” he explains.
“The SB-3000’s superior Astec remixing technology results in uniform HMA with a consistent material size and constant temperature. The SB-3000 uses a triple pitch auger design to eliminate segregation issues caused by single pitch augers. A single pitch auger pulls material from the sides of the bin, which causes the spaces between flights to remain full of material,” Saunders continues.
“This material is unable to be properly remixed, which leads to uneven temperatures
Astec Industries has supplied an Astec SB-3000 Shuttle Buggy through their rental partner, Road Milling and Sweeping, for an N2 road upgrade project at George in the Western Cape
and inadequate integration of small and large particles. By contrast, Astec’s triple pitch auger remixes across the entire width of the storage hopper as the material moves through, continuously blending and yielding a consistent mix. This technology eliminates the common issues of thermal and material segregation that compromise the resulting asphalt mat. With the SB-3000, road builders can be assured of thoroughly remixed material that is evenly distributed as it is paved.”
The ideally sized augers on the Astec SB-3000 also set it apart. “Their 26-inch diameter is ideal to reduce wear and tear,” Saunders explains. “This smaller diameter is the ideal size for remixing the material while keeping the conveyor chain out of the mix. Moving the same amount of material with smaller augers also results in less wear. The machine requires less torque, resulting in a lower total cost of ownership.”
Comfort and visibility
Operator comfort is enhanced in the Astec SB-3000. It offers improved control stations with dual seats that hydraulically swing out 90 degrees. The platform pivots out from the side of the machine, allowing the operator to sit perpendicular to travel. Seats can be easily pulled in at the touch of a button.
Exceptional visibility, simple operation and a slew of safety features are further benefits, Saunders adds. “The swing out seats provide excellent sight lines. From the safety of the operator seat, the operator can see clearly back to the paver as well as to the front of the machine. The operator also has clear sight lines to the C2, rear tyre, dump hopper, and paver.”
While seated, the operator has an unobstructed view of the groundperson, making for a safer and more efficient work site. The SB-3000
The Astec Shuttle Buggy acts as a crucial link between the delivery vehicle and paver, receiving and remixing hot material to ensure consistent temperature and eliminate material segregation, delivering smoother, more uniform pavement quality
boasts clear and intuitive controls. Its safety features include lights, cameras and display screens. The ground crew control panel includes a patent-pending seat that ensures safety and productivity.
“Lighting and access are brighter and better on the Astec SB-3000,” Saunders states. “The lighting package includes bigger, brighter LEDs that are designed for night work as well as safe transport and manoeuvring. The ladder on the SB-3000 provides access to the operator station and also acts as a bridge across the machine.”
Obstructions like islands and medians are no barrier to this MTV, he notes. “Challenging areas, such as parking lots, intersections, underpasses, and tunnels can be managed easily because the dump truck can unload at a convenient spot and the SB-3000 can shuttle the mix to the paver.
Large wheels with a shorter sidewall offer an improved ride and better float on the machine. The low-profile tyres provide stability, protecting the crew when surfacing the road and when
transporting the machine off the road at the end of the shift.”
The SB-3000’s engine is at ground level, so performing daily inspections and maintenance is safer and easier, he says. Easy access to the engine, hydraulic pumps, fuel and DEF tanks save time and improve safety. The Shuttle Buggy also has a wash down system. Regular cleaning is vital to prolonging the life of all asphalt paving equipment.
“This exceptional machine is the result of Astec constantly striving to improve on its Shuttle Buggy concept, taking in feedback from designers as well as operators across the sector over many years,” Saunders adds.
“The SB-3000 is the perfect blend of Astec’s history of manufacturing top quality, robust equipment with the latest road surfacing technology and innovation. We are delighted to have had the opportunity to supply an SB-3000 to support our customer RMS on the N2 road rehabilitation project,” Saunders concludes.
The SB-3000 can unload a truck at a rate of 1000 tons per hour
Some of the decking concrete slabs loaded for delivery
Precast concrete speeds up
construction of highway footbridges
Precast concrete beams and slabs manufactured by Concrete Manufacturers Association member, Cape Concrete Works, were used for the construction of two footbridges on either side of an existing road bridge on the R44, which traverses the N2 highway in Somerset West.
Spanning approximately 35 m across each of the N2 lanes and 3 m wide, the footbridges were required because the pedestrian/cycle lanes on either side of the road bridge were appropriated to accommodate a third traffic lane in both directions. Begun in April 2019 and completed in March 2020, the footbridges were designed by HHO Consulting Engineers and were constructed by Martin & East.
The use of precast concrete slabs greatly reduced the disruption to traffic had in-situ construction been used for the footbridge decking. Each bridge required eight prestressed
parapet beams, which provided structural decking support and were arched for material efficiency and aesthetic appeal. Moreover, varied recesses were added to the beams’ road-facing profiles for additional visual interest.
Four beams extend 22.5 m x 1.53 m (maximum height) x 800 mm (width) and four measure 12.5 m x 1.2 m (maximum height) x 800 m (width).
The bridges required 68 reinforced precast concrete slabs which measure 2 m x 3.1 m x 230 mm (thickness).
Cape Concrete director, Johan Nel, said the longer beams weighed 34 tonnes and the shorter beams 17 tonnes apiece. “We used an approved W50 concrete mix design to
Due to the high traffic volumes at this intersection, installation of the beams took place at night over two weekends using a 150 tonne mobile crane
achieve the required concrete strength and quality, a formula we have used successfully on numerous other precast bridge beam contracts,” he explained.
“The beams were cast at our 1 000T, 38 m prestressing facility and were individually stressed with a single-strand jack. Using overnight steam curing, we achieved the required 35 MPa strength after 18 hours. Before the beams were removed from the soffit formwork, the pre-tensioned steel strands were de-tensioned/cut, thereby transferring the load from the strands to the beams,” Nel continued.
Parapet walling
Besides providing structural decking support on either side of each bridge, the beams also act as parapet walling and provide support for steel handrails, which were interlaced with steel ropes for the additional safety of bridge users. The parapet beams were cast with anchor bolts to accommodate the handrails, a process which required a high degree of casting accuracy at Cape Concrete’s production facility.
A few of the arched concrete beams prior to delivery at Cape Concrete’s production yard
The decking is supported by three cast-in-situ concrete piers and two abutments at either end of each bridge. Each abutment was founded on two 14 m x 200 mm diameter micro-piles, installed through the existing bridge embankments, thereby mitigating the need for large excavations. No piling was required for the piers thanks to the bridges’ light loading and good quality founding material.
Traffic accommodation
Due to the high traffic volumes at this intersection, installation of the beams took place at night over two weekends using a 150 tonne mobile crane. One bridge was completed between a Saturday night and Sunday morning and the other between a Sunday night and Monday morning. During this process, the N2 traffic was diverted over the existing interchange’s on and off-ramps.
The beams rest under their own dead weight on 80 mm bearing pads, and once in position, were temporarily anchored to the existing bridge and then cross-braced with push-pull props until the slabs had been inserted. Cast with protruding steel stirrups, the slabs were installed at a later stage using a truck mounted crane parked on the road bridge. Once the slabs were in place, the steel stirrups meshed with the protruding rebar of the beams, and together with additional lacing, were then filled with in-situ concrete to form an integrated structure.
After all the construction work had been completed, a 30 mm layer of asphalt was laid as the final wearing surface.
HHO director, Andrew Rowan, commented that the considerable attention to detail in the design phase transformed a conventional beam and slab bridge concept into a visually pleasing upgrade to the existing interchange. 1 2 3 4
“The extensive use of precast concrete for the bridges’ superstructures and careful planning during the construction phase delivered a footbridge which takes full advantage of prefabricated concrete construction’s positive benefits,” Rowan concluded.
1 One of the three piers with bearing pads in position
2 One of the installed beams showing the arched facade and the recessed road-facing profile
3 A deck expansion gap prior to the expansion joint installation
4 A bird’s eye view of the newly completed footbridge sections. The footbridges were required because the pedestrian/cycle lanes on either side of the existing road bridge were appropriated to accommodate a third traffic lane in both directions
BENCHMARKING THE STANDARD FOR SA’S PRECAST CONCRETE INDUSTRY
South Africa’s top precast concrete producers are equal to the world’s best; a bold statement but true. The evidence for this observation can be seen in the much anticipated results of the Concrete Manufacturers Association’s (CMA’s) Digital Awards for Excellence 2024 Competition, which are readily to hand in the winners book at https://issuu.com/ andrewmeyer86/docs/winners_book_2024-pages.
Open to all CMA members, the competition attracted 34 entries including two international projects, and such was the overall quality of the submissions that each of the competition’s 15 entry categories attracted a winner.
“It’s not often that there is a winner in all entry categories,” says CMA general manager, Henry Cockcroft. “We have always operated on the basis of only conferring awards on merit, and if none of the entries in a particular category meet a standard worthy of an award, then no award is made.”
Aesthetic Excellence and Engineering Excellence
The competition is judged on the basis of product and application excellence in two groups, Aesthetic Excellence and Engineering Excellence; there are seven categories in the former and eight in the latter. Awards certificates are presented to all category winners, and the four best category winners are awarded a much-coveted CMA Awards for Excellence trophy.
This year nine, as opposed to seven Aesthetic Excellence certificates were awarded, the reason being there were two winners in the Cladding/Large Panels category and two in the Beauty for Life category. Similarly, eight Engineering Excellence awards were made, again because there were two winners in one of the Product Innovation categories.
“The fact that there were two winners in three of the entry categories further serves to highlight the high standard of this year’s entries,” Cockcroft explains.
Judging
The judging, which was based on video productions of all the entry projects, was an all-day affair held at the beautiful Catello di Monte Hotel in Pretoria. The judges included media specialist, Andrew Meyer, precast concrete specialist, Louis Orffer, and CSIR smart mobility expert, Dr Karien Venter.
Once the judges had finalised the category winners, the four trophy winners were chosen on the basis of the points they had accumulated in their respective categories. There was one Engineering Excellence
trophy winner and three Aesthetic Excellence trophy winners.
Engineering Excellence trophy winner
Rocla earned the sole Engineering Excellence trophy for the supply of HDPE-lined steel band jacking pipes, which were used in the construction of a new bulk outfall sewer system in Montague Gardens, Cape Town. The pipes were designed in accordance with very strict specifications for micro-tunnelling trenchless construction, a system which has gained worldwide traction for the installation of precast concrete sewer pipes in urban areas.
Aesthetic Excellence trophy winners
Revelstone, C.E.L. Paving Products, and Cape Concrete Works were the Aesthetic Excellence trophy winners.
Revelstone, which also gained three Aesthetic Excellence awards, earned a trophy for supplying pavers for an extensive landscaping makeover at Erinvale Estate Hotel and Spa, a five-star sanctuary in Somerset West surrounded by the majestic
Rocla HDPE-lined steel band jacking pipes used in the construction of a new bulk outfall sewer system in Cape Town
Some of Revelstone’s 50 mm Kent Cobble and Jura Cobble edging pavers, which formed an essential component in a landscaping makeover at Erinvale Estate Hotel and Spa in Somerset West
Pipes – Stormwater, Sewer, Pressure, Jacking
• Concrete Road Barriers
• Poles – Spun, Cast & Pre-stressed
• Oil / Grease & Heavy Metal Separators
• Concrete Cabins, Shelters & Bus Shelters
• Custom / Bespoke Products
Installed over ten years ago at the High Constantia Retail Centre in Cape Town, C.E.L. Paving Product’s coarse exposed aggregate pavers look as good today as when they were first laid
Hottentots Holland Mountains. Entered in the Wet Cast Stone category, the project entailed replacing clay brick paving with cast-stone cobbles.
Approximately 3 500m² of Revelstone’s 50 mm Kent Cobble and its Jura Cobble edging pavers were specified by the designer. The project was far from simple and the design and actual installation work required careful planning and detailing. The paving forms an intricate web of
interlinked paths, tree and fountain circles, which are interspersed among the estate’s extensive indigenous gardens and Cape Dutch architecture.
C.E.L. Paving Products won two Aesthetic Excellence certificates. One, in the Beauty for Life category, involved the supply of paving blocks for the High Constantia Retail Centre in Cape Town and the entry was awarded one of the trophies. The prestigious site is steeped in history and
Concrete Work’s precast concrete panels integrate seamlessly with the glazed facades of the recently completed Investec building at Cape Town’s V&A Waterfront
the design team wanted to ensure that the finished product harmonised with the surrounding landscape and its past.
C.E.L.’s coarse exposed aggregate paver was used to pave all the parking areas in a double-mix concrete design, which incorporates a dense cement-heavy 10 mm topping. Ten years on, the paving’s beautiful aesthetic has withstood normal vehicular and heavy-duty traffic and looks as good today as when it was first installed.
Cape Concrete Works won a certificate and a trophy in the Cladding/Large Panel category for the cladding of the new Investec building at Cape Town’s V&A Waterfront with large precast concrete panels. The building features 536 vertically installed panels in light and dark shades and in smooth and corrugated finishes.
Erected on the eastern and southern elevations, the precast concrete facades integrate seamlessly with the glazed facades on the western and northern elevations. The panels not only offer low maintenance but are designed to age gracefully, providing the building with an authentic aesthetic.
Digital reach
This year’s event was the CMA’s second digital competition. And as in 2022, videos were made of all entry submissions and were posted on YouTube and other social media platforms. They provided outstanding levels of focused exposure in the lead up to the judging.
“Our digital reach at 124 600 was nothing short of epic,” says Cockcroft, “and our content interactions at 639 was a staggering 643% higher than in 2022. Our total watch time covered 21 days and 11 hours and our organic wow factor came in at 6 681, a jump of 54,8%.”
“The fact that the entry videos achieved these remarkable results through our social media platforms show that in addition to showcasing precast concrete, they contain information of real value to construction professionals,” adds Cockcroft.
“In fact, the competition is more to do with gaining exceptional visibility for the multiple applications of precast concrete than winning an award. It’s about creating an informative resource for engineers, architects, property developers and other professionals, encouraging them to tap into the many advantages of precast concrete,” Cockcroft concludes.
Cape
NEW BULK OUTFALL SEWER WINS ROCLA A CMA AWARD FOR EXCELLENCE
High density polyethylene (HDPE) Lined Steel Band Jacking Pipes specifically designed for a new bulk outfall sewer project in Montague Gardens, Cape Town, has won Rocla, part of the Infrastructure Specialist Group of companies (ISG), a Concrete Manufacturers Association (CMA) Award for Excellence in the Engineering Category.
Rocla partnered with CSV Construction to supply HDPE Lined Steel Band Jacking Pipes for the construction of the new bulk outfall sewer project. Rocla designed and manufactured these products in accordance with very strict specifications as set out by the Herrenknecht tunnel boring machine requirements. The combination of micro-tunnelling and pipe jacking is a process which is very different to conventional jacking methods, making this a first for Rocla.
Comments Rocla Technical Executive, Muhammad Bodhania, “Rocla is delighted and honoured to have received the Award for Excellence: Engineering from the CMA. This was a project like no other we have been involved with in terms of the stringent design requirements due to the utilisation of the two innovative tunnel boring systems. Our design and manufacturing teams at Rocla worked hard to ensure that our Lined Steel Band HDPE pipes were constructed to standard and delivered on time.”
Connected sections being lowered into position in preparation for pipe jacking operations
CSV, a construction company with a substantial footprint in South Africa, approached Rocla to develop these specific HDPE pipes to work in conjunction with their Herrenknecht AVN (slurry) machines. The Herrenknecht AVN models employed on this project comprise the AVN 800 XC (2 No) upsized to 1 170 mm OD; the AVN 1000; and the AVN 1200TB upsized to 1 681 mm OD.
Within very tight deadlines Rocla managed to design and fabricate moulds and produce sample test units for scrutiny and testing by council and project engineers. With satisfactory results and the go-ahead on this historical project, Rocla
started manufacturing the required products, which, when completed, were delivered within the required timelines.
AKS Lining Systems’ Anchor Knob Sheet (AKS™) technology was specified as the optimum HDPE cast-in corrosion protection lining system.
Construction scope
Montague Drive Bulk Sewer is a major collector for the Koeberg Road Pump Station with a catchment area of approximately 3 320 ha. The original 4 km long system, installed 50 to 60 years ago – comprising asbestos, cement and reinforced concrete pipe materials – is unable to accommodate current and future requirements. It was also established that the line is exhibiting significant deterioration from sulphuric acid corrosion and infiltration, with areas of exposed reinforcement, obstructions and partial collapse. Construction of the new gravity main comprises approximately 3 800 m of 970 mm and 1 000 mm and 300 m of 1 350 mm ID concrete sewer.
Due to the relatively close proximity of commercial and industrial businesses requiring access during the entire construction period, and the high installation depth, the entire section of new sewer is to be installed using the unique micro-tunnelling trenchless construction technique.
Trenchless technology developments
The exciting combination of micro-tunnelling with pipe jacking is becoming increasingly important
Rocla high density polyethylene (HDPE) lined steel band jacking pipes awaiting installation on a new bulk outfall sewer project in Montague Gardens in Cape Town
worldwide for the installation of service and sewer pipes, offering numerous advantages, especially in urban city areas.
“Rocla has made a commitment to venture into this industry to supply the required precast elements that conform to the specified high levels of quality required by those involved with the micro-tunnelling process. We are known for our technical excellence and focus on service delivery,” says Bodhania.
Micro-tunneling is safe with uncrewed underground operations in nearly all geologies with minimal traffic disruptions and conservation of protected landscape areas.
Herrenknecht
AVN 800 XC (with 1 170 mm OD upsize kit) ready to launch
AKS Lining Systems’
Anchor Knob Sheet (AKS™) technology was specified as the optimum HDPE cast-in corrosion protection lining system for Rocla’s steel band jacking pipes. AKS™ is unique in its design, having 1 230 anchors per m², ensuring that AKS™ is locked firmly into the concrete structure
Construction is not affected by poor soils and high water tables with fewer stoppage periods due to weather conditions. Inclined jacking and 3-dimensional curves are also possible.
The AVN machines employed on the Montague Gardens project are closed, full-face excavation machines with a hydraulic slurry circuit. The cutter head excavates soil that passes through a cone shaped crusher, crumbling stones and other obstructions to a size conveyable via a slurry line to settlement tanks where solids are removed and the water returned and recycled. A hydraulic jacking frame advances the drilling head and trailing jacking pipes forwards.
Computer controlled guidance systems and lasers provide the high degree of accuracy required to ensure perfect installation.
Extensive footprint backed by innovation Rocla has an extensive network of factories throughout South Africa, Namibia and Botswana. They are able to design and manufacture customised special products that will meet the requirements of the customer. This is made possible as a result of Rocla’s technical expertise and quality controls and its more than 107 years of experience in the precast concrete industry.
THE LEADERS IN CONCRETE CORROSION PROTECTION LINERS
AKS Lining Systems has been manufacturing and supplying its flagship product, AKS ™ Corrosion Protection Liner, into sewer applications since 1992. One of our first projects was the City of Cape Town’s Cape Flats outfall sewer.
Since these early days, the product has been specified and used in some of the largest sewer projects around the globe. These include key infrastructure developments like the Deep Tunnel Sewerage System (DTSS) Phase 1 (in 2000) and Phase 2 (currently ongoing) in Singapore, and the Strategic Tunnel Enhancement Programme (STEP) in Abu Dhabi.
Closer to home in South Africa, projects like the N2 Gateway housing project in Cape
Town; bulk sewers in Paarl; the Driftsands collector sewer, and the Markman sewer in Gqeberha; and the wastewater treatment works (WWTW) project in Polokwane have all used AKS lining technology.
AKS™ (Anchor Knob Sheet) has an extremely long and proven track record. Currently we export our products to over 26 countries and the applications for AKS™ varies from sewers to water storage, mining and acid proofing.
AKS™ offers high abrasion resistance, is acid-proof and offers long-life expectancy in the harshest environments
Potsdam WWTW
Being a Cape Town based manufacturer we are always excited and eager to work on projects close to home and the current Potsdam WWTW upgrade in Milnerton, Cape Town is certainly an interesting and varied one. This will see the plant's capacity increased from 47 million to 100 million litres per day. AKS™ liner is used in the large diameter pipelines, while large chambers and other key structures within the treatment plant are also being lined with AKS™
The unique performance of AKS ™, being able to anchor firmly into the host concrete, yet offer flexibility to bridge any cracks – while offering a chemically inert HDPE surface with exceptionally high abrasion resistance – are just some of the key design aspects which make it so versatile. The extended design life of HDPE is an added benefit when reviewing a lining system in a large, long-term project like the Potsdam WWTW.
Montague Gardens bulk outfall sewer
Another interrelated project where AKS ™ has been involved is on Cape Town’s new bulk outfall sewer project in Montague Gardens. AKS Lining Systems supplied this solution to Rocla, which manufactured the purposed-designed HDPE lined steel band jacking pipes specified for this project.
Rocla recently won a Concrete Manufacturers Association (CMA) Award for Excellence in the Engineering Category for this product innovation. We at AKS Lining Systems are certainly pleased to have been associated with Rocla on this project, as Rocla is one of our long-term clients in South Africa.
AKS Lining Systems’ AKS™ (Anchor Knob Sheet) HDPE corrosion protection liner was specified for the Strategic Tunnel Enhancement Programme (STEP) in Abu Dhabi. The scope entailed the lining of 51 km of 3m diameter precast concrete jacking pipes in a distinctive lilac colour
Water Institute of Southern Africa wisa@wisa.org.za
Wam Technology CC support@wamsys.co.za
Wilo South Africa marketingsa@wilo.co.za
WRCON ben@wrcon.co.za
Zutari charmaine.achour@zutari.com
Chryso® Quad App is simplifying mix design optimisation with real-time insights for better concrete performance
APioneering a greener construction future for Africa
s Africa’s construction industry embraces greener practices in meeting its infrastructure needs, Chryso is on board with a rebranded focus on sustainability. Having merged with GCP Applied Technologies under the Saint-Gobain banner, Chryso’s new identity reflects its commitment to eco-friendly innovation, according to Sibu Hlatshwayo, Managing Director of Chryso Southern Africa. This focus is at the core of its mission to responsibly support Africa’s infrastructure growth.
“We are addressing local needs while helping customers reduce CO₂ emissions,” says Hlatshwayo. “Our new green branded identity signals our dedication to pioneering the future of construction by creating practical, sustainable solutions.”
He highlights that Chryso’s approach centres around four pillars: innovation, proximity, partnership and sustainability. An example of its innovative edge is the Chryso® Quad Range, which allows contractors to use local aggregates that fall below traditional standards, to minimise transport distances and reduce carbon emissions.
“Our Chryso Quad app complements our technical capability, guiding users to the best products based on specific aggregate characteristics, while our clay testing kit helps ensure quality results,” he explains. “Our Chryso EnviroAdd Range further reduces the environmental impact of construction by lowering clinker content in concrete mixes, as clinker is one of cement’s most energyintensive components.”
Another breakthrough is Chryso’s innovations related to limestone calcined clay cement (LC3), a more sustainable alternative to traditional cement that blends limestone and clay to produce a greener concrete.
“Proximity is also a critical aspect of Chryso’s strategy, as we consider ourselves as a ‘multi-local’ business – rather than just multinational,” he says. “Our African footprint is well equipped to meet specific local needs with our facilities and our sales and technical support teams. By expanding our network of local laboratories – recently opening a new facility in Kenya, for instance – we can test raw materials locally and quickly to provide optimised solutions.”
Through more localised production, such as its manufacture of cement additives in Ghana, customers have the advantage of quicker turnaround times and reduced logistics costs, as well as the convenience of purchasing in local currency.
“Chryso is also driven by a passion for collaboration,” says Hlatshwayo. “Climate change requires a united approach, so we work with partners across the construction ecosystem to enhance our impact.”
Sustainability is at the heart of Chryso’s mission, and the company shares both admixture solutions and specialised knowledge to help customers to reduce their environmental footprint. The Chryso Academy is a valuable resource in this mission, offering courses to contractors, universities and other stakeholders to promote sustainable construction.
He concludes that sustainability needs to include renewed attention on the circular economy, as Africa’s rapid urbanisation is demanding increased recycling of concrete. This is another area where Chryso admixtures are playing their role.
AfriSam smooths the customer journey
It is now easier than ever to manage the purchase of construction materials from AfriSam, but the whole customer experience is much deeper than just this moment in the relationship.
e have built our business around our customers, ensuring that they are buying not just our products but peace of mind and long-term cost effectiveness,” says Richard Tomes, AfriSam Sales and Marketing Executive. “Beyond the products themselves, customers are also benefitting from our depth of technical expertise and support – while also joining our quest to create a better society.”
Tomes highlights that AfriSam’s digital platform ClickToGo streamlines the customer experience when purchasing products online. It provides a seamless process from enquiries and quotes, through order placement and technical advice, to payments and delivery tracking.
“At the same time, we know that customers often need to speak directly to an informed and responsible employee, who will deal with their query – however complex,” he says. “Automated systems can’t always do that, so we have a contact centre manned by experienced people, and they work from a centralised office – not from home – that is well resourced for optimal responsiveness.”
Fit-for-purpose
He emphasises, though, that the whole customer experience rests upon decades of innovation and a market leading expertise that underpins the success of customers’ projects –whether large or small. Serving the growing DIY and small builder market, for instance, AfriSam’s quality All Purpose Cement ensures strength and longevity in a diverse range of applications.
“For those segments where the risk of selecting an inappropriate cement category is high, our All Purpose Cement gives users the best results across various applications,” he says. “This is becoming more important as more and more cement is sold from retailers, often to relatively inexperienced users.”
Tomes points out that there is significant risk involved when people make poor or uninformed purchasing decisions about critical building material like cement. The BBC has reported that the Nigerian capital Lagos experiences a building collapse every two weeks on average, with substandard or inappropriate building material being a common factor.
“We also see tragic consequences from unsafe food in South Africa, and we should recognise that products like cement also require informed purchasing decisions,” he says. “We are proud that we can assure people of our guaranteed quality, so that they can build safe and durable buildings.”
At the same time as it serves inexperienced users, AfriSam is well known for its leadingedge skills and facilities, on which large and medium sized contractors often rely for technical advice, bespoke concrete mixes and specialised support. Its reputation for reliability also means that quality is consistent and deliveries are on time, keeping projects on track and on budget.
“This capability gives our customers the comfort that project risks are being effectively mitigated, to deliver structures that are safe and long-lasting,” says Tomes. “It also ensures value for money, as quality materials in construction will avoid unbudgeted expenditure on repairs and maintenance.”
As a responsible company investing continuously in skills and community development, AfriSam’s commitment to a “positive African future” includes maintaining and nurturing critical expertise for construction to thrive.
“As a BBBEE Level 2 contributor, we actively pursue transformation goals for our company, the sector and the country. This ensures that the economic growth we facilitate is inclusive and supports future livelihoods for all,” Tomes concludes.
Rand Water
AfriSam’s e-experience platform, ClickToGo, is a first of its kind in the industry
Richard Tomes, AfriSam Sales and Marketing Executive
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