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Editor’s Welcome
Austen Lees
Firstly, on behalf of the whole Trenchless Works team, I wanted to wish you all a very Merry Christmas and a happy and healthy New Year! Whether you are a reader, contributor, or advertiser, I also want to thank you for supporting the magazine in 2024. We’re really proud of what the magazine has become, but we fully appreciate that it would be nothing without all of you. We are also committed to continuing to evolve and improve the magazine, so if you have any ideas or suggestions, we’d love to hear from you.
You’ll be pleased to see that, despite the fact that the ‘big day’ is rapidly approaching, we’ve not been in holiday mode. This Christmas edition is packed full of trenchless news and innovations from around the world. Keep an eye out for articles from DISAB, BRAWO® SYSTEMS, and LeakNavigator’s work with Southern Water.
Following what has been a stellar year of events organised by the brilliant
Westrade team, we were pleased to support the National Water Innovation Conference and Exhibition (NWICE) in Kuala Lumpur. You can read more about the event later in the magazine, but it was great to catch up with so many supporters of Trenchless Asia and develop a host of new relationships.
Next year’s event season kicks off in March with the first No-Dig Roadshow in Belfast. These events are always massively popular, so if you want to be involved, be sure to contact the team as soon as possible.
Have a great Christmas, and we’ll see you in 2025!
Austen
To submit editorial for Trenchless Works next issue please email copy and images to: editorial@trenchless-works.com by the 12th of the month. Submissions arriving after this date cannot be guaranteed inclusion in that month’s issue. For Trenchless Works sponsorship and advertising rates please email: tdorrell@westrade.co.uk
ARTICLE
Editor’s Welcome
NEWS
BRAWO® SYSTEMS expands its DIBt approval
Westrade attends major Malaysian water event Time to get the trenchless show on the road
SUCTION EXCAVATION
Leading the charge
ASSET MANAGEMENT
LeakNavigator delivers 80% conversion rate for Southern Water
PIPELINE REHABILITATION
S1E and McBreen Enviro UK collaborate
FOCUS ON TRENCHLESS TRAINING
What challenges and opportunities in 2025?
UKSTT SOCIETY NEWS
A message from the Chair
ISTT SOCIETY NEWS
A message from the Chair ISTT Award Winners 2024
The new ISTT website is going live!
A new opportunity for students: The ISTT Albert Shou Student Scholarship
NASTT SOCIETY NEWS
NASTT’s good practices courses & publications featuring newly revised HDD and CIPP materials
EVENTS AND MEETINGS
Any shape, any size
Channeline’s bespoke GRP lining systems can precisely fit any existing structure, offering a fullystructural trenchless solution to improve performance and extend infrastructure life for 150 years.
BRAWO® SYSTEMS expands its DIBt approval
BRAWO® SYSTEMS has successfully completed the extensive testing program specified by the German Institute for Construction Engineering (DIBt) and extended and supplemented its approval for the underground area with curing by UV or LED light (Z42.3-566).
Extension of the scope of approval
The approved diameter range of the BRAWOLINER® 3D has been extended upwards to DN 300. This means that diameters of DN 100 – DN 300 can now be rehabilitated with the BRAWOLINER® 3D, even when there are changes in dimension of the pipe run. The BRAWOLINER® system approval now makes it possible to rehabilitate waste water pipes with two changes in dimension (three different diameters in one pipe run) over the entire diameter range.
The BRAWOLINER® 3D DN 200300, together with the other types of BRAWOLINER® listed in the approval, can now be used for rehabilitation with both with the BRAWO® UVPox51 and the BRAWO® LR.
The BRAWOLINER® 3D is a seamless textile hose with an equally seamless film coating. Due to a special loop construction, all BRAWOLINER® 3D hoses are extremely flexible, which makes them the ideal rehabilitation solution for defective pipes with dimensional changes and bends up to 90 degrees. Due to the special construction, the BRAWOLINER® 3D adapts
optimally, and almost creasefree, to the pipe run.
Addition to the BRAWO® UVPox 51 resin system
The BRAWO® UVPox51 is an improved version of the BRAWO® UVPox (now UVPox50). In particular, the significantly lower (and therefore better) reduction factor results in higher longterm values for E-modulus and flexural stress. This makes the system more structurally efficient.
In general, BRAWO® UVPox51 continues to fulfil the following material properties
• Form-fitting contact in the old pipe with no penetration of water behind
• Very good mechanical characteristics
• High installation reliability due to extremely long processing time
• Optical check using coloured resin
• Targeted, fast curing
• Styrene-free and low-odour
• High abrasion resistance
• Lasts for over 50 years
• Curing with our light curing units
• (UV and UV/LED light)
Due to this updated approval, rehabilitation with the BRAWOLINER® 3D and lightcuring resins has been made even more flexible.
Integration of factory preimpregnation
Also newly integrated into the approval is rehabilitation with a factory pre-impregnated
BRAWOLINER® 3D, such as the pre-impregnated BRAWOLINER® 3D LR.
Detailed information on the approval and the appropriate statistical parameters can be found on www.brawosystems. com/downloads.
Westrade attends major Malaysian water event
Paul Harwood, Managing Director Westrade Group, and publisher Trenchless Works.
Representatives from Westrade were recently back in Kuala Lumpur, attending and exhibiting at the National Water Innovation Conference and Exhibition (NWICE), which took place between 26 and 28 November. Their participation and the opportunity to engage
with industry leaders and government officials were particularly beneficial as they prepare for the return of Trenchless Asia to the stunning Malaysian capital in May next year.
During the event, Westrade hosted a Trenchless Asia VIP room that was attended by several key dignitaries. These included YBhg. Dato’ Mohd Rodzwan Bin Mohd Baba Sakri, Deputy Secretary General (Water), and Mrs. Zahariah binti Mohd Sarif, Division Secretary (Water & Sewerage Services) from PETRA; Ms. Noor Hidayah Dato’ Sanusi and Mr. Raja Baharudin Raja Mamat from JPP; and Ir. Muhamad Sobri Zakaria, Executive Director of the Water and Sewerage Regulatory Department at the National Water Services Commission (SPAN).
“ It was great
to be back in Kuala Lumpur and to have the opportunity to meet with so many influential leaders, including the Deputy Prime Minister
Alongside Trenchless Asia, NWICE plays a crucial role in promoting sustainable water solutions across Malaysia and the wider region. At a time when climate change and resource management are critical global issues, the conference provided a platform for discussions on innovative strategies for reducing water wastage, enhancing efficiency, and driving sustainable practices across several sectors. Over the two days, Westrade and other participants engaged in insightful sessions that inspired actionable steps within their organisations.
Commenting on the success of the event, Westrade’s managing director, Paul Harwood, said: “It was great to be back in Kuala Lumpur and to have the opportunity to meet with so many influential leaders, including the Deputy Prime Minister. It was also wonderful to reconnect with a lot of friends and colleagues who support us in delivering Trenchless Asia, including Mark from SgSTT, Frank from JBP Trenchless Training, and Fazil from MATT. MATT were a major
supporter of NWICE and their active participation really helped promote the use of trenchless technologies and ensured they were front of mind throughout the event.
Over the course of the event, it was inspiring to hear more about Kuala Lumpur’s commitment to becoming a trenchless city and the significant progress that is being made. It is also encouraging to hear relevant government departments, ministries, and associated agencies committing the budget required to keep the city moving and provide this vital infrastructure to the public across Malaysia. I am confident that many of these organisations, including the Ministry of Works, will join us next year at Trenchless Asia.”
Trenchless Asia 2025 promises to continue this momentum by focusing on the advancement of trenchless technology and its pivotal role in modern infrastructure development. Scheduled to take place in Kuala Lumpur on 21 and 22 May, the event will continue to gather industry experts, policymakers, and technology providers from around the world to explore the latest innovations in trenchless methods. As urbanisation increases and infrastructure demands grow, the need for efficient and environmentally friendly installation and maintenance solutions for underground utilities becomes ever more pressing.
The 2025 conference will feature a variety of sessions that delve into important topics such as the benefits of trenchless technology in reducing surface disruption, its applications in urban environments, and the integration of sustainable practices in construction projects. >
Keynote addresses from leading figures in the industry will highlight successful case studies and showcase cuttingedge technologies that are shaping the future of trenchless operations.
In addition to the insightful presentations and workshops that provide hands-on experience, Trenchless Asia 2025 will once again feature the highly popular training sessions delivered by JBP. These interactive sessions are designed to equip participants with the skills and knowledge needed to stay ahead in the rapidly evolving trenchless sector. The event will also
feature a major exhibition area where companies can showcase their latest products and technologies to prospective clients.
Moreover, Trenchless Asia will continue to provide numerous networking opportunities, allowing participants to forge partnerships that will lead to collaborative projects in the future.
Similar to Trenchless Asia, the success of NWICE can be attributed to its timely focus on sustainability, the wealth of knowledge and best practices shared among attendees, and the invaluable connections
made during the event. As the water sector continues to evolve, conferences like NWICE and Trenchless Asia will play critical roles in fostering collaboration and driving meaningful change for sustainable infrastructure.
The insights gained from NWICE will support the Westrade team in delivering what is set to be the biggest and best Trenchless Asia to date, highlighting advancements in trenchless technology while addressing the pressing challenges facing the water and wastewater industry across the region.
Time to get the trenchless show on the road
Westrade has officially announced their 2025 No-Dig Roadshow series, which kicks off in Belfast on 19 March 2025.
The ever-popular roadshows showcase the very best in trenchless technology to audiences around the UK and Ireland and boast a world-class conference programme curated in association with the UKSTT. Leading industry figures will deliver case studies and updates on major local infrastructure projects to a highly engaged audience that includes utility providers, contractors, consultants, engineers, and product specialists.
In addition to the conference programme, there will be an exhibition featuring industry suppliers from the UK and across Europe, who will be
demonstrating the latest products and available to discuss individual enquiries throughout the day.
In June, the roadshow team will cross back over the Irish Sea and head to “the Steel City,” Sheffield, for the summer event. This marks the first time the city has hosted a No-Dig Roadshow, and its central location has already resulted in attracting considerable interest.
The final event of the series, taking place in October at the fabulous De Vere Tortworth Court in Bristol, will also host the UKSTT Annual Awards ceremony and dinner. This notto-be-missed evening always provides a fantastic networking opportunity while shining a light on the incredible innovation that this high-growth market has to offer.
Details of the three events are shown below:
No-Dig Roadshow Belfast
Wednesday, 19 March 2025
Crowne Plaza Belfast – 117 Milltown Rd, Belfast BT8 7XP
No-Dig Roadshow Sheffield
Wednesday, 25 June 2025
DoubleTree by Hilton Sheffield Park – Chesterfield Rd S, Batemoor, Sheffield S8 8BW
No-Dig Roadshow Bristol
Thursday, 2 October 2025
De Vere Tortworth Court, Tortworth, Wotton-under-Edge GL12 8HH
For more information about any of the events, visit www. nodigroadshows.co.uk or email tdorrell@westrade.co.uk.
Kuala Lumpur Convention Centre, Kuala Lumpur, Malaysia 21-22 May
• Over 2500 visitors from over 40 countries
• National TV coverage
• Government Ministers in attendance
• Pioneering product launches
• Over 150 exhibiting companies
• Access to key stakeholders in regional utility companies
• Be part of Malaysia’s growing infrastructure investment
• Alignment to Malaysia’s sustainability goals
Visitors will be coming from over 40 countries including Malaysia, Philippines, China, Singapore, Thailand, Indonesia, India, Japan and Europe representing the following industries
Trenchless
Trenchless
Leading the charge
The DISAB Futurion™ Q20 MultiFLEX is setting new standards
For over 40 years, DISAB has been at the forefront of industrial vacuum technology. Known for designing innovative equipment that combines efficiency with reliability, DISAB helps businesses across multiple industries maintain cleaner, safer, and more productive work environments. From construction to energy, DISAB equipment is trusted to handle the most challenging tasks, including material handling, site cleaning, and excavation. >
With trenchless projects becoming increasingly complex, DISAB’s expertise meets a critical need. Its vacuum loaders are designed to simplify the toughest jobs, offering precision, power, and versatility. Leading this charge is the Futurion™ Q20 MultiFLEX, a cutting-edge vacuum loader created to manage demanding trenchless applications with ease.
Made for the toughest challenges
The Q20 MultiFLEX is built to tackle the unique requirements
of trenchless work, where precise digging and material removal are essential. Its standout feature, the DISAB MultiFLEX™ hose arm, provides unmatched flexibility and reach. Whether the user needs to dig deep to expose cables and pipes or handle heavy material loads, the MultiFLEX arm ensures the job is done efficiently and safely.
“The installation of the DISAB centralised vacuum system has made all the difference. We can go to any part of the plant wherever the spillages are heaviest, or wherever the dust needs to be removed.
All we have to do is to plug in the flexible suction hose to a conveniently located inlet valve, and it’s a simple job to remove whatever dust or waste needs to be dealt with.”
The arm’s ability to work across a 180° area reduces the need to reposition the vehicle, saving time and effort. Made from lightweight but durable highstrength steel, the hose arm also features a 10-inch inlet, allowing it to handle both wet and dry materials with ease.
Engineered for efficiency
What sets the Q20 MultiFLEX apart is its ability to combine multiple functions into one machine. Its vacuum system generates a maximum pressure of 900 mBar and an air volume of 11,000 m³/h, making it capable of handling even the toughest material removal tasks. The system also includes a digging tool mount, adding precision and power when excavating in sensitive areas.
Operators can work confidently thanks to the radio-controlled system, which not only allows safe operation at a distance but also provides real-time performance data to enhance productivity. Additionally, the high tipping angle simplifies material discharge, ensuring less downtime between tasks.
“We’re using our TrailerVac™ several times every week. There may also be occasional spillages that we need to suck up and, where appropriate, put back into the relevant storage bay. It’s a constant part of our mission to provide top quality storage and grain handling facilities. We need to get access for cleaning as high as 25 metres up in the warehouse. >
The DISAB MultiFLEX™ hose arm provides a 180° working area and a 10-inch inlet hose for high-capacity material handling
Operators use the radio control to safely and efficiently manage the Q20 MultiFLEX from a distance
With the TrailerVac™ providing the suction power on the ground, we’ve always found there’s plenty of pull at the end of the hose. That makes dust removal at these heights and distances really easy, as well as being much safer for our employees.
We’re not just talking about the amount of pull when the hose is horizontal either; we’re talking about 25 metres straight up!”
More than a machine
To maximise value for operators, DISAB provides
comprehensive training through its DISAB Academy. This ensures every operator is equipped to use the Q20 MultiFLEX safely and cost-effectively, enhancing overall project success.
“The Callow Rock Quarry operation has been using a DISAB BagVac for 10 years, and with regular servicing, the unit’s still going strong and helping the team remove around a tonne or two a week of limestone dust and spillages from around their plant and site.”
The DISAB Futurion™ Q20 MultiFLEX stands out as a solution that meets the demands of trenchless projects head-on, helping operators work faster, safer, and with greater accuracy.
DISAB Academy ensures operators are fully trained to get the best performance from the Q20 MultiFLEX.
The DISAB Futurion™ Q20 MultiFLEX: A versatile, efficient, and safe solution for trenchless work
Game changer!
New era for pipe jacking and direct pipe projects with small and even non-accessible diameter: new planning possibilities, reduction in cost and construction time, increased daily output, maximum safety, ...
... and much more that TUnIS.pipelight, our new assistance system for automated control measurement has to offer. Find out!
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LeakNavigator delivers 80% conversion rate for Southern Water
Southern Water, which serves more than four million customers in the water-scarce south-east of England, is working towards a 15% leakage reduction by 2025 while the company’s Water Resources Management Plan 2024 sets out long-term plans to more than halve leakage by 2050. This will be achieved through a combination of new technologies and enhanced monitoring, using tools such as acoustic sensors and digitalised management systems.
In November 2020, Southern Water began a project with technology company Ovarro
to undertake targeted leakage reduction in approximately 40 district metered areas (DMAs) across its region of Kent, Sussex, Hampshire and the Isle of Wight.
Fully managed fixed network
As part of its commitment to use new technology to find leaks, Southern Water became one of the first utility companies to deploy Ovarro’s LeakNavigator, the UK’s first fully managed, fixed network leakage service.
The LeakNavigator package comprises acoustic dataloggers
“ We
are aiming to reduce leakage by 53% by 2050 – a target greater than the 50% reduction set by the government. New technology, like LeakNavigator, is a key part of our strategy
from Ovarro’s Enigma range, a cloud-based analytics platform and the company’s in-house leakage expertise. Ovarro analysts plan out a fixed network of acoustic loggers on behalf of water companies, support the installation process, analyse the data to pinpoint leaks, raise points of interest (POIs) and assign them directly to technicians.
To start the process, Ovarro’s analysts undertake a preassessment of each targeted DMA, establishing the most suitable logger type and install locations. Logger installations are typically carried by the
utility’s leakage contractor, although Ovarro can manage the process if required.
Once the loggers are in operation, data is fed into the LeakNavigator analytics platform, LeakInsight, which will generate POIs based on the overnight correlations. Filters can be applied so the platform removes noise such as electrical interference, pressure reducing valves, and mechanical water meters. High priority ‘hot spots’ can also be flagged up.
Ovarro’s analysts review each POI that has been generated, checking for consistencies in
the data. If the data indicates the strong likelihood of a leak, analysts will assign the POI to leakage technicians via a mobile app. A technician will visit site, confirm the location of leaks found, and raise a job for the repair. If no leak is found, analysis and communication continue via the app until a conclusion is reached.
Ovarro sends regular reports and POI trackers to the customer and its leakage contractor. The platform is flexible, meaning any part of the process can be tailored for individual companies. >
For Southern Water, approximately 1,650 correlating acoustic loggers were installed across the company’s region. Of these loggers, 1,500 were the model Enigma3-BB, a hydrophone sensor, and the remainder were the model Enigma3m, an accelerometer sensor.
The Enigma3-BB was selected as the primary logger due to ease of deployment – the device is installed in a property meter box chamber, which requires no work in the highway, and provides more access point to the network.
The Enigma3-BB sensitive hydrophone is also proven to be effective in picking up leak noise on plastic pipes - an enduring challenge for water companies, as sound does not travel well on plastic. As more ageing metal pipes are replaced with plastic, the scale of this challenge is set to increase.
Conversion rate of 80%
In the early weeks of the project, approximately 12 leaks were detected per month. Knowing the figure could be improved, Ovarro analyst Chris Mould reassessed each DMA and set specific individual filters using the LeakInsight software.
Additional training in the system and POI follow-up process was also given to leakage technicians onsite. Following the training, technicians began to find more leaks, much faster. In fact, they increased from around 12 per month to approximately 130. They also gained greater confidence in the accuracy of the POIs.
Up to July 2024, a total of 1,170 leaks and 66 burst mains had been found. An overall conver-
sion rate of 80% was recorded for category 1 alerts, for which the data indicated a strong likelihood of a leak being found. Leakage in 35 of the DMAs had reduced, with an overall reduction of 51 cubic metres in water loss across all DMAs. This equates to 204Ml/d of water being saved every month. Targets in 16 DMAs had been met, with the project ongoing.
Notable successes
In April 2024, LeakNavigator detected two main bursts in one DMA in the town of Andover in Hampshire, where leakage had been increasing for approximately 12 months. Earlier attempts to pinpoint the leak had proved challenging. This was in part due to a pressure reducing valve emitting constant sound and an oval-shaped water main pipeline that reverberated all sound waves.
On following up the POIs, with close guidance from Ovarro’s analysts, technicians found two large bursts, one on a plastic pipe and one on metal, both likely to have been running since at least January 2024. Following repairs, the nightline figure for the DMA reduced by 13.5m3/h. Using previous methods of leak detection, the leaks were likely to have continued to go undetected until they became visible at the ground’s surface.
In June 2024, two further large leaks were picked up by the system, both on communication pipes. The first repair saw the nightline reduce from 15 cubic metres per day to nine. The second repair brought a further reduction which took the DMA nightline down to 3m3 per day.
Throughout the project, Ovarro analysts have maintained
constant communication with Southern Water’s leakage managers and contractors.
Ovarro leak analyst Chris Mould said: “Key to the success of this project has been close communications between Ovarro, our client Southern Water and the technicians who are following the LeakNavigator process in the field every day.
“Their ongoing feedback has helped us enhance the process and Southern Water has been supportive of trialling new approaches. As a result, the system is running with high efficiency, tailored to the client’s needs, and is producing excellent results.”
Phil Tapping, regional operations leakage manager at Southern Water, said: “We are aiming to reduce leakage by 53% by 2050 – a target greater than the 50% reduction set by the government. New technology, like LeakNavigator, is a key part of our strategy.
“Having used Ovarro leakage products for a number of years, we were confident that LeakNavigator would deliver good results in the DMAs we were targeting. After some initial training and guidance, the overall endto-end process was straightforward, and we are pleased with the outcomes to date. As a result, we plan to continue to use LeakNavigator in AMP8.”
JACK TALBOTT, Technical Sales
phone +44 7740 197127 e-mail jtalbott@impreg.com
BEN CARTER, Warehouse Manager
phone +44 7546 869289 e-mail bcarter@impreg.com
S1E and McBreen Enviro UK collaborate
Innovative collaboration resolves pipe infiltration challenges, to ensure effective prevention of water ingress for a wildlife protection project at the A30 Mammal Crossing.
S1E, a supplier in trenchless technology, recently partnered with McBreen Enviro UK to tackle a critical groundwater infiltration issue in a vital wildlife crossing beneath the A30 roadway in Cornwall. This 900mm diameter concrete pipe, part of the Government’s Road Investment Strategy, plays a key role in allowing wildlife to safely navigate under one of the region’s busiest routes.
Preserving a safe passage for A30 wildlife crossing project
The A30 Chiverton to Carland Cross upgrade is a project in the national strategy to enhance the roadway to dual carriageway standards. Central to this upgrade is the protection of local wildlife. One mammal crossing along the route, equipped with wildlife-proof fencing, was found to be compromised due to groundwater infiltration affecting 40 pipe segments. Action was required to prevent further damage and ensure the crossing remained safe and functional for animal use.
The challenge: Complex repairs
The project presented several challenges:
• Severe Groundwater Infiltration: Impacted 18 pipe segments in one section and 22 in another, posing risks to structural integrity.
• Safety Compliance: Demanded a skilled team trained in confined space operations and rescue and recovery.
Effective solutions with K-Prema Mechanical Seals
S1E was consulted for a reliable repair solution and recommended McBreen Enviro UK for their expertise. The K-Prema Mechanical Seals were chosen for their durability and effectiveness in preventing water ingress. Manufactured from WRAS-approved material, the K-Prema seal ensures longlasting performance, even in challenging environmental conditions. >
Strategic implementation
A team of McBreen Enviro UK specialists, certified in confined space work, were deployed to install the seals. Each seal was strategically applied to reinforce the 900mm pipe and to halt groundwater infiltration ensuring long-term integrity of the pipe and functionality.
Results of the Pipe Infiltration solution
• Successful Infiltration Mitigation: The K-Prema Mechanical Seals successfully addressed groundwater issue, sealing the pipe and preventing future infiltration.
• Timely Project Completion: The project was completed within the agreed timeframe, with minimal disruption to wildlife and road users.
• Enhanced Infrastructure and Wildlife Conservation: The repaired crossing ensures continued safe passage for wildlife while maintaining the stability of the A30 roadway infrastructure.
Conclusion: The power of collaboration in infrastructure maintenance
This project highlights the power of collaboration in addressing complex infrastructure challenges. By leveraging the expertise of both S1E and McBreen Enviro UK, the team delivered an effective, efficient solution to complex infiltration challenges.
As a result, the A30 mammal crossing stands as a demonstration to innovative problem-solving and commitment to effective prevention of water ingress, infrastructure longevity and wildlife conservation.
Contact McBreen Enviro UK to explore more about our infrastructure maintenance services, pipe repair solutions, and how we can support your next project.
What challenges and opportunities in 2025?
Frank Reilly Director JBP’s Trenchless, Training Programme
Before we look forward to challenges and opportunities in the year ahead, it may be worth taking a moment first to reflect on the past year. We have now completed a year of posting for Focus on Trenchless Training with what I hope will have been informative, relevant, and at times provocative articles over a range of themes. Time flies!
We have covered topics including the role of our trenchless societies, taking training online and beyond the classroom, the importance of product training and empowering our customers and clients, training at key events such as No-Dig Live, Trenchless Asia, and Trenchless Middle East, skilling up to meet challenges such as AMP 8 in the U.K., and much more besides.
The one common objective with all the articles we have published in this space over the
last twelve months has been to raise the profile and importance of training, in its many forms, across the trenchless sector. Anecdotally, in conversations and communications with many trenchless colleagues and attending and observing activity at key events, I think we can say we have in some small part achieved this objective, but there is still much to be done in the year ahead!
Challenges ahead
For all of us working to improve and develop our water and wastewater infrastructures, the demand for more sustainable, efficient, and cost-effective solutions has never been greater. Global focus on addressing ageing pipelines, better use of water resources, and environmental concerns should place trenchless technologies at
the forefront of innovation. Training professionals, at all levels, to meet and overcome the challenges and seize the opportunities will be vital in 2025.
Ageing infrastructure
Water and wastewater infrastructure approaching or exceeding their design lifespans is a universal issue across the majority, if not all, of large cities and densely populated areas globally. Repairing or replacing these systems using traditional methods is not only costly and disruptive but also often no longer a viable or permitted option. Trenchless methods, as we all know, offer a viable alternative, but adoption depends heavily on a skilled workforce capable of implementing these solutions effectively.
Focus on expanding and emerging markets
The Middle East, Asia, and Africa are significant growth areas for trenchless technology, as they represent expanding and emerging markets. Tailored training initiatives in these regions, aimed at supporting
engineers and technicians unfamiliar with trenchless methods and technologies, will expedite the adoption of innovative methods and equip local professionals to tackle infrastructure challenges.
Skill gaps
Despite the increasing recognition of trenchless methods, many regions face a shortage of trained professionals. This gap is especially pronounced in emerging markets, where awareness of trenchless solutions is growing, but access to specialized training programs remains limited.
Technological advancements
The pace of innovation in the trenchless sector presents both an opportunity and a challenge. Professionals must stay current with new equipment and techniques. Training providers will need to look for new and innovative ways of delivering training to keep pace with the technological innovations and developments.
Environmental pressures
With stricter regulations on emissions, water conservation, and land use, trenchless methods must continually demonstrate their environmental benefits. Any training should emphasize sustainability practices and compliance with local regulations.
The impact of Ai
Artificial intelligence (AI) is already a revolutionising force, not only in the trenchless industry. From predictive maintenance and pipeline condition assessment to optimising project planning and resource allocation, AI will enhance efficiency and accuracy across the board. Training programs must incorporate AI literacy to ensure professionals can leverage these powerful tools effectively. This includes understanding AI-driven data analytics, machine learning applications, and integrating AI solutions into existing workflows. >
Skilling up for 2025 and beyond
As the need for trenchless expertise grows, so does the demand for comprehensive training programs. These programs should cover not only the technical aspects of trenchless methods but also project management, cost analysis, and client communication.
Not exclusive to 2025, but to meet the demands of the year ahead, the trenchless industry should prioritize training as a cornerstone of its growth strategy. Training should be integrated at all levels, from entry-level technicians to senior project managers, ensuring a cohesive understanding of trenchless methods and technologies. This includes not only technical training but also fostering a culture of continuous learning and innovation. Applied workshops, online courses, and collaborative initiatives can help
bridge skill gaps and prepare the workforce for the challenges ahead.
By addressing the challenges and leveraging the opportunities in 2025, the water and wastewater sector can harness the full potential of trenchless
technologies. Comprehensive and inclusive training will be essential to equipping current professionals and educating the next generation with the skills they need to drive sustainable and efficient infrastructure solutions. We look forward to the next twelve months with optimism and excitement!
I wish all Focus on Trenchless Training and Trenchless Works readers a very Merry Christmas and a great start to the new year!
Next issue: MasterClasses –Learning from the experts.
www.trenchless.training
NO-DIG EVENTS
International No-Dig events brought to you by the industry's world experts
NO-DIG ROADSHOW SERIES 2025
19 March 2025
Crowne Plaza Hotel, Belfast www.nodigroadshows.co.uk/ndrs-belfast/
TRENCHLESS ASIA 2025
21-22 May 2025
KL Convention Centre, Kuala Lumpur, Malaysia
NO-DIG ROADSHOW SERIES 2025
25 June 2025
DoubleTree Hilton, Sheffield Park, Sheffield
EUROPEAN NO-DIG 2025
TRENCHLESS MIDDLE EAST 2025
Kingdom of Saudi Arabia 2025
NO-DIG ROADSHOW SERIES 2025
2 October 2025
Tortworth Court, Bristol
TRENCHLESS MIDDLE EAST 2026
Dubai 2026
EUROPEAN NO-DIG 2026
NO-DIG LIVE 2026
29th September – 1st October 2026
NAEC Stoneleigh Park, Warwickshire
TRENCHLESS ASIA 2026
Bangkok, Thailand
NO-DIG ROADSHOW SERIES 2026
FUTURE EVENTS
BRAZIL | INDIA | NO-DIG SOUTH AFRICA | ROMANIA | TRENCHLESS VIETNAM
A message from the Chair
As 2024 draws to a close, I would like to extend my warmest Christmas wishes to all our members, patrons, and everyone involved in the trenchless technology industry.
This year has been one of growth, collaboration, and innovation, and none of it would have been possible without your dedication and support.
I would like to express my heartfelt gratitude to our council members, patrons, and all our members. Your commitment, expertise, and efforts throughout 2024 have been invaluable in driving our society forward and promoting the message “Think Trenchless first” for the benefit of the public.
It was great to attend Floodex last week followed by an awards dinner hosted by NADC. Speaking to people I was impressed with the enthusiasm and focus on education and introducing people new to the industry. Something that we are all in agreement with is the current shortage of skilled engineers and operators.
As we look ahead to 2025, we remain excited about the opportunities and challenges that lie ahead.
We have No-Dig roadshows planned and in early February another Trenchless conference.
This will continue along the themes of our previous conference and discussion sessions at No Dig Live 2024.
These are benefits, education, standards, raising awareness and what’s on the horizon with regard to trenchless technologies.
Together, we will continue to educate, promote sustainable infrastructure solutions, and strengthen our community.
Wishing you and your loved ones a joyful Christmas and a prosperous New Year.
May this festive season bring you peace, happiness, and well-deserved rest.
Graham Howard
Graham Howard, Chair, UKSTT
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SOCIETY
NEWS
A message from the Chair
Dear ISTT members
I wish you and your family a Merry Xmas and a Happy New Year!
As you may know we had elections and elected our new Vice Chair Sam Efrat (SASTT), and three new BoD members Paulo Dequech (ABRATT), Pertti Leppänen (FiSTT), and Thorsten Schulte (GSTT). However, I hope you, as a member of ISTT, will contribute more to our strategic plan for the next 5 years and attend more committees if possible, because you are the owner of ISTT. In addition, our new website needs your contribution and feedback to make the functions more useful and make ISTT stronger.
You may be aware that we have many national, regional, international No-Dig events in 2024, and will have more in 2025, please check the ISTT event calendar in the ISTT website. As you may remember, I have attended the No-Dig events in Berlin, Jinan (China), Changsha (China), Paris, etc. It is worth noting that the first N-Dig Asia Pacific, an ISTT owned regional conference, was successfully held in Hong Kong. There were around 200 attendees and 35 exhibitors, together with a student paper session for the ISTT Albert Shou Scholarship recipients for the first time.
In addition, the bi-lateral and multi-lateral cooperation
between European societies and between Asian societies help a lot in developing new technologies and good business. Through the regional events, like 2023 Trenchless Latin America, 2023/2024 European No-Dig, 2023/2024 No Dig Turkey, and the 2024 ITTC, the organising societies successfully attracted the spotlight by integrating the governing sector, consultants, contractors, and suppliers in trenchless business. This also created more cooperation between the affiliated societies in their region. Obviously, the demands and challenges in different regions also create different opportunities. I strongly suggest you consider attending these local and regional No-Dig conferences as it will be the major trend in the next few years. Continuously, we will soon have more ISTT educational webinars, please do not forget to check the notice and register in ISTT website.
I would like to point out again that ISTT keeps improving our services to our affiliated societies, please feel free to give us your precious comments or suggestions.
I Wish You and Your Family All The Best!
Keh-Jian (Albert) Shou Chair, ISTT
Keh-Jian (Albert) Shou, Chairman, ISTT
ISTT News brought to members by Trenchless Works
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ISTT Award Winners 2024
The International Society for Trenchless Technology (ISTT) is proud to announce the winners of its prestigious awards presented during the 2024 Annual Council Meeting in Dubai. These awards recognise excellence, innovation, and dedication in advancing trenchless technology.
Under the leadership of ISTT Chair Keh-Jian (Albert) Shou,
Category
this year’s awards celebrate groundbreaking projects, academic achievements, and lifetime contributions to the trenchless industry.
The No-Dig Awards honour outstanding contributions to trenchless technology through innovation and excellence.
This year’s recipients are:
Winner
Project - New Installation HebeiHuayuan Science and Industry Co., Ltd.
Project - Rehabilitation Environmental Techniques, Northern Ireland Water, Dawson Wam, Caledonia Water Alliance, Scottish Water, Good Friday Robotics
New Technology Environmental Techniques, Northern Ireland Water, Dawson Wam, Caledonia Water Alliance, Scottish Water, Good Friday Robotics
Academic Research
Student Paper
Takashi Sasaoka, Kyushu University
Lit Yen Yeo, Swinburne University of Technology, Sarawak Campus
Title of entry
Weizhou-Beihai Pipeline Development Project’s Submarine Pipe Crossing Work of the Channel Planned for 300,000-Ton Ships
Queens Bridge Siphons Relining
Vienna - UV-Curing CIPP in a Challenging Bell Profile DN 1500
Drone Technology Integrated with LiDAR
Jacking Force Prediction for Rectangular Shape
Temporal Attention-Based Deep Learning Model to Identify the Impacts of Pipe Jacking Operation Parameters on Highly Variable Jacking Forces
NO-DIG AWARD 2024
PROJECT – NEW INSTALLATION
Winner: HebeiHuayuan Science and Industry Co., Ltd.
Country: China
Title: Weizhou-Beihai Pipeline Development Project’s Submarine Pipe Crossing Work of the Channel Planned for 300,000-Ton Ships
The Weizhou-Beihai
Pipeline needed to cross a planned channel for 300,000-ton ships near Weizhou Island. The deepest point of the crossing was approximately 22.2 meters below the seabed of the planned channel, with a bottom width of 370m, a bottom level of -24.9m, a slope ratio of 1:8, and a dredging depth of 2.7m. Offshore HDD (Horizontal Directional Drilling) methodologies were employed for the installation
of this submarine pipeline segment, oriented 6° North by West, crossing the channel at a horizontal angle of 83°. The HDD crossing distance was 840m, and the pipe pullback length was 1,540m.
For the offshore crossing, the HDD operation utilised the “Tianze No.1” offshore HDD drilling barge on one side, where pilot drilling, borehole reaming, and back pulling were conducted. On the opposite
side, an assistant engineering barge was deployed to weld pipes as they were pulled back into the borehole undersea. The “Tianze No.1” was towed to the sea area near Weizhou Island for this operation on December 14th, 2022. The crossing work began with the installation of pilings at sea on December 20, 2022, and was completed with the pullback on January 11, 2023.
From left: Albert Shou (ISTT), Wang Xiaobing (HebeiHuayuan Science & Industry Co., Ltd.), and Trevor Gosatti (ISTT)
NO-DIG AWARD 2024
PROJECT – REHABILITATION
Winner: Environmental Techniques, Northern Ireland Water, Dawson Wam, Caledonia Water Alliance, Scottish Water, Good Friday Robotics
Country: United Kingdom
Title: Queens Bridge Siphons Relining
The Queen’s Bridge Siphons project, undertaken by Northern Ireland Water, focused on the rehabilitation of twin 1140mm sewerage siphons in Belfast, which are crucial for serving 40,000 residents. These siphons had deteriorated over time, leading to leaks of freshwater that placed an additional burden on downstream treatment facilities. To address these issues, the project employed innovative techniques that minimised excavation, thereby reducing disruptions, noise, and carbon emissions, and aligning with sustainable practices.
This environmentally conscious approach not only protected local communities and ecosystems but also preserved river-based leisure activities. Utilizing precise drone data, a custom liner was designed for the North Siphon’s reduced section, ensuring a secure fit for the cured-in-place pipe (CIPP) liner. This precision allowed the relining phase to proceed without the need for extensive traditional civil replacements, maintaining continuous sewer operation and significantly reducing costs.
The project exemplifies technological innovation and collaboration in infrastructure development, showcasing how modern engineering solutions can effectively address aging infrastructure challenges. By integrating advanced technologies and sustainable practices, Northern Ireland Water successfully enhanced the reliability and efficiency of the sewer system, demonstrating a commitment to protecting both the environment and the community’s quality of life.
From left: Thomas Philliben (Environmental Techniques), Jack Hutton (Good Friday Robotics), Albert Shou (ISTT), Shauna Herron (Environmental Techniques), Mark Mitchell (Northern Ireland Water), Iain Jones (Scottish Water), Trevor Gosatti (ISTT), Harry Hutton (Good Friday Robotics)
Belfast 19 March 2025
Sheffield 25 June 2025
Bristol 2 October 2025 ( & UKSTT annual awards)
dshow Series 2025
Supported by Organised by
Belfast
Sheffield
Bristol
NO-DIG AWARD 2024
PROJECT - REHABILITATION
Winner: Impreg GMBH, & Swietelsky-Faber
Kanalsanierung GMBH & Prokasro
Country: Germany
Title: Vienna - UV-Curing CIPP in a Challenging Bell Profile DN 1500
Apipeline with a bell profile was found to be defective, with the concrete fabric in poor condition, necessitating renovation. Swietelsky-Faber GmbH addressed this by installing two DN1500 liners using materials from IMPREG GmbH. The liners, with a wall thickness of 11.9 mm, measured 161.9 meters and 75.1 meters. A major challenge was the weight of the liners, with the larger weighing 17.8 tons and the smaller 8 tons.
Commissioned by Wiener Linien GmbH & Co. KG, Vienna’s municipal transport company, the project was crucial for maintaining the city’s extensive transport infrastructure. Utilizing advanced UV technology, the project minimized disruptions and aligned with sustainable practices. Two DN1500 shafts were sunk to a depth of 6 m to facilitate safe installation outside the tram gauge. The old sewer was cleaned with highpressure jetting, and a sliding
film protected the liners during installation. The liners were pulled in using a cable winch and conveyor belt system.
After installation, the liners were inflated and cured with a UV light source, achieving a curing speed of 950 mm/min. The renovation was completed in 15 hours by a skilled team, exemplifying innovation and collaboration in infrastructure development.
Winner: Environmental Techniques, Northern Ireland Water, Dawson Wam, Caledonia Water Alliance, Scottish Water, Good Friday Robotics
Country: United Kingdom
Title: Drone Technology Integrated With
Environmental Techniques employs drone technology integrated with LiDAR to conduct safe and efficient sewer network surveys. This innovative approach allows drones to access hazardous and hard-to-reach areas, while LiDAR technology captures precise 3D data of the sewer infrastructure. By collaborating with water authorities, this technology has been successfully tested and implemented in the UK and Ireland, providing critical surveys for assets that were previously inaccessible.
LiDAR
The 3D models generated from these surveys offer detailed insights into the dimensions, defects, and geolocation of the sewer systems. This comprehensive data enables water authorities to make informed decisions regarding maintenance and repairs, significantly enhancing the safety and efficiency of their operations. The use of drones and LiDAR not only reduces the need for manual inspections, which can be dangerous and disruptive, but also optimizes maintenance efforts, ultimately benefiting both communities and the environment.
This approach aligns with modern engineering standards and sustainable practices, minimizing environmental impact while ensuring the reliability of essential infrastructure.
By leveraging advanced technology, Environmental Techniques is setting a new standard for infrastructure management, demonstrating a commitment to innovation and environmental stewardship. This initiative exemplifies how technology can be harnessed to improve public services and protect natural resources.
From left: Iain Jones (Scottish Water), Harry Hutton (Good Friday Robotics), Jack Hutton (Good Friday Robotics), Albert Shou (ISTT), Shauna Herron (Environmental Techniques), Mark Mitchell (Northern Ireland Water), Thomas Philliben (Environmental Techniques), Trevor Gosatti (ISTT), Iain Jones (Scottish Water), Harry Hutton (Good Friday Robotics), Jack Hutton (Good Friday Robotics), Albert Shou (ISTT), Shauna Herron (Environmental Techniques), Mark Mitchell (Northern Ireland Water), Thomas Philliben (Environmental Techniques), Trevor Gosatti (ISTT)
NO-DIG AWARD 2024
ACADEMIC RESEARCH
Winner: Takashi Sasaoka, Kyushu University
Country: Japan
Title: Jacking Force Prediction for Rectangular Shape
Underground infrastructures such as subways, sewage systems, power supply systems, and utility tunnels now require more environmentally friendly and sustainable construction methods. However, applying the conventional open-cut method to construction in urban underground spaces is challenging due to various political and ecological restrictions. The pipe jacking method, a trenchless technology, offers advantages
such as low comprehensive cost, no disturbance to traffic, and low environmental impact, and has been widely used. Recently, the refined application of underground space has become a trend for metropolises, as rectangular spaces offer a higher space utilization ratio compared to circular spaces. Therefore, rectangular pipe jacking technology has more potential application scenarios. This research aims to develop an accurate
jacking force prediction equation for rectangular pipe jacking, considering the pipe-soil contact state. Moreover, the most important aspect of the pipe jacking method is to lay the pipe with the required quality without impacting existing structures, such as causing ground surface subsidence or collapse. To address this, an environmentally friendly hardening-type lubricant with fly ash has been developed.
From left: Albert Shou (ISTT) and Takashi Sasaoka (Kyushu University)
NO-DIG AWARD 2024
STUDENT PAPER
Winner: Lit Yen Yeo, Swinburne University of Technology, Sarawak Campus
Country: Malaysia
Title: Temporal Attention-Based Deep Learning Model to Identify the Impacts of Pipe Jacking Operation Parameters on Highly Variable Jacking Forces
This study introduces a temporal attentionbased deep learning model designed to analyse the impacts of pipe jacking operation parameters on jacking forces, particularly in scenarios with highly variable jacking forces. The technique is applied to a case study, highlighting the complexities of underground construction without surface disruption. While traditional
methods focus primarily on prediction accuracy, this model emphasizes understanding the significance of pipe jacking operation parameters throughout the jacking process. By utilising a temporal attention mechanism, the model dynamically adjusts the importance of each parameter, identifying critical zones in the drive where their influence becomes crucial. This approach surpasses
previous studies by providing a quantifiable relationship between pipe-jacking operation parameters and jacking forces, ultimately enhancing the safety and efficiency of pipe-jacking construction. The findings represent a significant advancement in trenchless technology, offering improved predictions and operational insights for future projects.
From left: Albert Shou (ISTT) and Lit Yen Yeo (Swinburne University of Technology, Sarawak Campus)
ISTT FELLOWS 2024
The ISTT Fellow designation is awarded to individuals who have made exceptional contributions to the trenchless industry. This year, ISTT welcomes:
DR. JOHN MATTHEWS (UNITED STATES)
BÖRJE PERSSON (SPAIN)
The director of the Trenchless Technology Center (TTC) at Louisiana Tech University, Dr. Matthews, is a global leader in infrastructure systems research. Under his leadership, TTC has become a hub of innovation and collaboration.
CEO of JBP Group, Börje Persson has spent over 35 years shaping the trenchless industry. As a pioneer of UV-Cured CIPP technology, his work continues to influence trenchless practices worldwide.
From left: Albert Shou (ISTT) and John Matthews (Louisiana Tech University)
From left: Albert Shou (ISTT) and Börje Persson (JBP Composites S.L.)
LIFETIME SERVICE AWARD 2024
JOHANN WILHELM WESSELS (SASTT- SOUTHERN AFRICAN SOCIETY FOR TRENCHLESS TECHNOLOGY)
Johann Wilhelm Wessels has been instrumental in advancing trenchless technology in South Africa. A long-standing member of the Southern African Society for Trenchless Technology
(SASTT), Johann served on its board for 18 years in roles including President and VicePresident.
Since retiring in 2018, he continues to serve as Honorary Past President. Johann’s career began in 1984 with the City of Tshwane’s Water & Sanitation Department, where he rose to Deputy Director. He made significant contributions to maintaining the city’s sewer systems, pioneering a condition assessment program that led to the cleaning, CCTV inspection, and grading of over 24,000 km of sewers. This initiative had a profound impact,
particularly in disadvantaged areas like Mamelodi and Hammanskraal, where he favoured pipe-bursting for its efficiency.
In water networks, Johann introduced a pipe-bursting program to replace 100 km of pipelines championed trenchless methods like Cured-In-Place Pipe (CIPP) and pipe jacking for their minimal environmental impact. His development of specifications and tender documents set industry standards across Southern Africa.
Johann’s work earned international recognition, including second place in the 2001 ISTT No-Dig project awards. His legacy includes improved infrastructure maintenance and promoting sustainable trenchless technology practices.
Johann Wilhelm Wessels
From left: Albert Shou (ISTT) and Sam Efrat, (Honorary Past President of SASTT) receiving the trophy on behalf of Johann Wilhelm Wessels.
Celebrating excellence
These awards highlight the spirit of innovation, dedication, and collaboration that defines the trenchless industry. The ISTT extends its heartfelt congratulations to all the award winners for their remarkable achievements.
Gold Sponsor:
Special
thanks to the sponsors of the Chair’s
Reception
The awards were presented during the Chair’s Reception held on the 24th floor of the Jumeirah Beach Hotel on November 4th.
The event was sponsored by IMPREG and SWIETELSKY-FABER as gold sponsors, and Asoe Hose Manufacturing Inc. as the silver sponsor. Thank you for contributing to the success of this event.
Silver Sponsor: Asoe Hose Manufacturing Inc.
The MOST POPULAR Trenchless Event in the
Figures from 2024 Event
1456
“This year, we allocated more than 1 Trillion Liras (33 Billion USD) from the central government budget to heal the earthquake wounds and build more resilient cities in the Türkiye Century.”
Cevdet Yılmaz,
Deputy President of Türkiye, 05 February 2024
The new ISTT website is going live!
By Trevor Gosatti, Executive Director, ISTT
The ISTT is pleased to announce that its new website is ready to launch to the world.
After presentations at the Trenchless Middle East event, in early December, training was completed for the ISTT Affiliate Societies so that administration staff could be appraised of the system.
The ISTT engaged EventMagix to complete the development of the new website and an advanced database to complement the website and its services.
Key features of the new website
The new website contains many new features for the Affiliated Societies and their members, hopefully providing many more opportunities to promote trenchless technologies around the world. Some of the new features include:
• For each corporate member, a basic corporate booth page where the entity’s products and services can be displayed via video, brochures and WhatsApp.
• The ability to “upgrade” the basic corporate booth to a higher level virtual corporate
booth providing the corporate entity to promote its goods and services to a global audience. The additional features include additional video, brochures, presentations, business cards, WhatsApp and other media.
• The website will have an enhanced “Trenchless Technology” pages highlighting the benefits of trenchless technologies to industry.
• Enhanced pages providing past conference papers, webinars, etc will be provided.
• ISTT Affiliate Societies will have dedicated pages promoting their Society and providing exposure to their Society events and services.
• A next level database facility will assist Affiliate Societies to have member data included and allow members in the database to access all the features of the ISTT website.
• It is planned for a Single Sign
On (SSO) for the member login process to assist members.
• The database will allow a more improved search function for corporates and the goods and services they offer to industry. These goods and services will link the corporate entity to the described technologies in the Trenchless Technology resources pages providing enhanced exposure to potential clients.
Looking ahead: ISTT member portal
With the website launch corporate members will be required to log in to their account and update their website page information to include all data for their entity. This will then facilitate their exposure to promote their goods and services on a global platform.
The launch of the ISTT website is the first stage of the development of an ISTT Member Portal that will allow member benefits in the future with enhanced digital tools for webinars, virtual and hybrid events, training and communications.
The ISTT is connecting trenchless across the world.
A new opportunity for students: The ISTT Albert Shou Student Scholarship
The International Society for Trenchless Technology (ISTT) is excited to announce the establishment of the ISTT Albert Shou Student Scholarship, generously supported by Asoe Pipe Manufacturing. This scholarship aims to recognize and reward outstanding student papers in the field of trenchless technology, providing a platform for young innovators to showcase their research and ideas.
The scholarship was officially introduced at the 1st No-Dig Asia Pacific International Conference & Exhibition 2024, held at the Hong Kong Polytechnic University. This event, organised by the China Hong Kong Society for Trenchless Technology (CHKSTT), served as a significant gathering for experts and enthusiasts in the trenchless technology sector, featuring high-quality technical papers and discussions on the latest advancements.
The inaugural ISTT Albert Shou Student Scholarship was awarded during this conference, marking a milestone in supporting academic excellence and innovation. The first recipients of this prestigious scholarship were:
• Bosong Yu from the Japan Society for Trenchless Technology (JSTT), Japan
• Yutong Zu from the China Society for Trenchless Technology (CSTT), China
• Marique Grobbellar from the Southern African Society for Trenchless Technology (SASTT), South Africa
Looking ahead, the ISTT is pleased to announce that the Albert Shou Student Scholarship will continue to be awarded in 2025, further supporting and inspiring students to contribute to advancing trenchless technology.
Yutong Zu
Marique Grobbellar
Bosong Yu
NASTT’s good practices courses & publications featuring newly revised HDD and CIPP materials
NASTT offers multiple in-depth, high-quality training courses each year in-person in cities throughout North America as well as a virtual webinar format covering targeted trenchless topics, such as CIPP, Horizontal Directional Drilling (HDD), pipe bursting, laterals, and new installation methods. They strive to produce high quality course content that is peer reviewed for noncommercialized, consensusbased information.
NASTT’s mission is to be the premier resource for knowledge and education in trenchless technology. As such, the Training and Publication Committee is tasked with the mission, “to promote education on current, up to date trenchless methods both virtually and in-person.” Funds raised through these courses provide the financial resources to further develop and update the training courses which NASTT provides.
Recently the fifth edition of NASTT’s Horizontal Directional Drilling (HDD) Good Practices Guidelines book was released. And by popular demand, the book is now available in a digital format you can access online from any device, as well as a print-on-demand version! The fifth edition includes updated content reflecting the latest advancements and techniques in HDD. Alongside the book, NASTT has also updated the HDD training course to align with the new edition.
The all-new HDD Good Practices Course is 8 hours of technical education. Here are some of the exciting updates you can expect from this revised course: Expanded geotechnical investigation recommendations; Revised recommendations for bend radius considerations; Discussion of new US Army Corps requirements for HDD crossings under levees; Significant changes to recommendations for guidance, surveying, and tracking of HDD pilot holes; and Significant changes to construction considerations, including noise abatement, intersect method, drilling in rock, pipe fabrication and support, and inspection of HDD projects.
An additional advanced HDD short course has also been developed to address further topics. NASTT’s HDD: Calculations & Advanced Design Good Practices Course is based on advanced modules from the guidelines.
The 4-hour “Focus on HDD Design” course is geared toward industry professionals that have an understanding of the basics of HDD construction. This session focuses on advanced design considerations that are specific to HDD projects. The presentation includes a detailed look at geotechnical conditions and potential risks related to ground conditions, as well as a discussion of contract document considerations.
The course also includes an in-depth discussion of the
various calculations that are needed to assess and mitigate risks when designing HDD crossing geometries, including: hydrofracture risk analysis, pull back and pipe stress calculations for various pipe materials, and settlement risk evaluations. These calculations are often required to secure permits from departments of transportation, railroad owners, environmental agencies, and flood control agencies, among other stakeholders.
NASTT’s CIPP Good Practices Guidelines book and course training materials began their development in 2004 and were originally part of a training program developed by the Centre for the Advancement of Trenchless Technologies (CATT), located at the University of Waterloo.
Installation methodologies, tube and resin systems, engineering methodologies, and technologies have advanced over the past several years, and significant updates were made so that the book and course materials were current and relevant.
The first edition of the book was published in 2015 and is still available for purchase on the NASTT website with the second edition coming in 2025! >
While the basic structure of the course remains the same as the first edition, changes and updates were made throughout the course materials including new text, photographs and graphics to reflect current technologies and engineering associated with the rehabilitation of gravity sewer main lines via CIPP.
The all-new NASTT CIPP Good Practices Course provides a comprehensive overview of gravity sewer CIPP rehabilitation from planning, through design, project implementation, and verification. It also provides an overview of CIPP in pressure applications and in sewer lateral programs.
Major updates in design include both the most current ASTM F1216- Appendix X1 releases,
ASCE MOP 145 and an overview of the soon to be released AWWA Design Appendices for Pressure Pipe Design of CIPP. Other enhancements include environmental and safety aspects of CIPP, include the latest research on VOC management.
Additional updates on the horizon include an all-new Laterals Good Practices Course that will premier during the NASTT 2025 No-Dig Show in Denver in April 2025.
The suite of NASTT training courses, both the 4-hour Intro to New Installation and Intro to Rehabilitation Courses as well as the 8-hour courses will be available in-person in Denver and virtually throughout the year.
For the latest schedule visit https://nastt.org/training/ upcoming-events/ to view the training and events calendar.
For questions on NASTT publications or training program, contact NASTT Education Manager, Kari Webb at kwebb@nastt.org.
NASTT UPCOMING EVENTS
January 22, 2025
Introduction to New Installations Good Practices
Virtual
January 30, 2025
Introduction to Rehabilitation Good Practices
Virtual
February 5, 2025
Rocky Mountain Trenchless Elevated 2025 Omaha, NE, USA
February 26-27, 2025
HDD Good Practices
Virtual
March 30, 2025
Introduction to New Installations Good Practices Denver, CO, USA
March 30, 2025
Introduction to Rehabilitation Good Practices Denver, CO, USA
March 30 – April 3, 2025
NASTT 2025 No-Dig Show Denver, CO, USA
April 2-3, 2025
NEW Course Alert! Laterals Good Practices Denver, CO, USA
April 2-3, 2025
CIPP Good Practices
Denver, CO, USA
April 2-3, 2025
HDD Good Practices Denver, CO, USA
April 2-3, 2025
New Installation Methods Good Practices Denver, CO, USA
April 2-3, 2025
Pipe Bursting Good Practices
Denver, CO, USA
April 2-3, 2025
NEW Course Alert! Direct Steerable Pipe Thrusting Good Practices
Denver, CO, USA
April 24, 2025
Advanced HDD Good Practices
Virtual
May 29, 2025
Municipal Grouting Good Practices
Virtual
June 12, 2025
Laterals Good Practices
Virtual
June 25-26, 2025
New Installation Methods Good Practices
Virtual
September 24-25, 2025
CIPP Good Practices
Virtual
October 27-30, 2025
NASTT 2025 No-Dig North & ISTT International No-Dig Vancouver, BC, Canada
November 6, 2025
Advanced HDD Good Practices
Virtual
November 12-13, 2025
Direct Steerable Pipe Thrusting Good Practices
Virtual
December 10-11, 2025
Pipe Bursting Good Practices
Virtual
March 29 - April 2, 2026
NASTT 2026 No-Dig Show Palm Springs, CA, USA
November 2-4, 2026
NASTT 2026 No-Dig North Calgary, AB, Canada
AFFILIATED SOCIETIES
ISTT
Affiliated Societies around the world
Austrian Association for Trenchless Technology (AATT)
c/o TU Wien Resselgasse 5, 1040 Wien, Austria
Phone: +43 664 5184084
Email: office@grabenlos.at Web: www.grabenlos.at
Brazilian Association for Trenchless Technology (ABRATT)
Alameda Santos, 1773 – Jardim Paulista Sao Paulo 01419-002 Brazil
c/o Sari Pietilä, Haapasuonkankaantie 10 90830 Haukipudas, Finland
Phone: +358 504132484
Email: info@fistt.net Web: www.fistt.net
French Society for Trenchless Technology (FSTT)
4 rue des Beaumonts, F-94120
Fontenay Sous Bo, France Phone: +33 1 53 99 90 20
Email: contact@fstt.org Web: www.fstt.org
German Society for Trenchless Technology (GSTT) Kurfürstenstr. 129 (Building: German construction association) Berlin, Germany Phone: +49 30 81 45 59 84
Email: beyer@gstt.de Web: www.gstt.de
Italian Association of Trenchless Technology (IATT)
Via Ruggero Fiore, 41 Rome Italy Phone: +39 06 39721997
3rd Floor, Reed-C Bldg., 2-11-18, Tomioka, Koto-ku, Tokyo 135-0047 Japan
Phone: +81 3 5639 9970
Email: office@jstt.jp Web: www.jstt.jp
Latin American Society for Trenchless Technology (LAMSTT) Medellín Highway (Calle 80) KM3.5 via Bogotá-Siberia south side, Bogotá Terrestrial Cargo Terminal, Office C-12, Cota – Cundinamarca, Colombia
