Aussie Trenchless leaves no project in the trenches

Aussie Trenchless’ flagship – and most popular – product is a close fitting structural spiral ribbed PVC trenchless pipe lining system known as the SRP EXP. Used for circular sewer and storm water gravity mains, the method has seen an increased popularity both in Australasia and abroad thanks to its versatility and ease of use.

By installing SRP EXP, asset operators can extend the service life of sewer and stormwater systems by more than 50 years. The product is designed to fit standard size access chambers but is also ideal for tight spaces and locations with bad access.

As the installation process is unaffected by running infiltration and does not need bypass pumping, it is well suited to water applications, particularly as it also enhances the hydraulic characteristics of the rehabilitated asset. The product is available for asset profiles from DN 150 to DN 1200, with such range allowing it to become a standout product to the market.

Aussie Trenchless Director Chris Meredith says he has seen significant growth in the implementation of this trenchless solution all around the world and particularly here in Australia, where it has been implemented in several locations.

Using Aussie Trenchless’s spiral lining system helped prevent collapse of the existing pipe walls.

A standout product in action

Recently, the spiral lining system was used to rehabilitate corrugated steel stormwater pipes for the Tablelands Regional Council in Queensland at the Ravenshoe Project.

As the pipes – which were each 750 mm in diameter and 33 m long – were in what was described as a ‘horrific’ condition, the contractor decided the only feasible application was Aussie Trenchless’ spiral lining.

With other methodologies, the risk of collapsing the walls could possibly result in a need to dig up the road. As it was the only road providing residents access to their properties, this would have caused major concern and delay with the digging requiring in at least one week of work.

By implementing the Aussie Trenchless solution, the contractors completed a size for size rehabilitation that had minimal risk of collapsing the existing pipe walls. At the conclusion of the project, the contracted engineer was extremely pleased with the final result and signed it off with no hesitation.

Mr Meredith says this project is just one example of how customers are starting to take advantage of the product, with the company receiving lots of market feedback indicating it’s one of the most financially viable and efficient systems available.

“Like all efficient trenchless methods, the spiral lining system helps ensure the works’ aboveground footprint is minimised as much as possible, which includes the land and environment itself, as well as the day-to-day lives of the public in surrounding areas,” says Mr Meredith.

“Other systems need two separate winding machines to install a range of profile to suit pipes from DN 150 to DN 1200. SRP EXP has been designed with one winding machine that installs all sizes of expanding profile for pipes from DN 150 to DN 1200 meaning there is no need for multiple winding machines.”

More than a one-hit wonder

While the SRP EXE is at the forefront of Aussie Trenchless’ offerings to the market, the company’s Hot Sleeve Jacket is a product that remains popular among customers by inducing a speedy resign cure during patch and seal lining activities.

The Hot Sleeve is a tight-fitting heating jacket that is secured over a patch inflatable packer to reduce ambient cure period without reducing its life, with operators finding it saves up to 60 per cent in crew times.

Aussie Trenchless has also caught the industry’s attention with its Pipe Segment Technology (PST) – a man entry lining system using transparent polypropylene lining panels for the rehabilitation of gravity sewer mains.

Both easy to build and fast to implement, PST lining panels are made of polypropylene material which provides a smooth surface with excellent hydraulic performance characteristics.

This article was featured in the June 2020 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.

For more information visit the Aussie Trenchless website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at

Convince your boss of the benefits of No-Dig Down Under!

These key facts will convince your boss that you need to attend one of Australia and New Zealand’s most important infrastructure events.

Read more

No-Dig Down Under opens early bird registrations

No-Dig Down Under, one of the largest dedicated trenchless technology events in the world, will take place at the Melbourne Conference and Exhibition Centre on 10–13 September.

Once again, the event will feature a world-class conference program, a packed exhibition hall, valuable social events and networking opportunities, and best-in-class training courses on trenchless topics.

This year’s theme – Engaging beneath the surface – represents the role ASTT plays between the different stakeholders in Australasia’s no-dig community.

There are a number of registration options available:

  • Full conference delegate – early bird* AU$1,210 for members and AU$1,430 for non-members. This includes full access to technical conference program, catering, trade show and all social functions.
  • Utility location stream only – AU$550. This includes access to utility location stream of conference only, catering, exhibition opening and trade show.
  • One day conference (Wednesday or Thursday) – AU$900. This includes access to the selected day’s conference program and social function, catering and trade show
  • ASTT training course only – AU$490 for members or AU$590 for non-members. This includes the selected ASTT training course and access to the exhibition opening and trade show.
  • Exhibition trade show only – FREE

*Early bird registrations close at midnight AEST 12 July 2019.

Click here to register.

The conference and exhibition are accompanied by a number of social functions; individual and guest tickets are available for purchase on the following:

  • Tuesday 10 September: Exhibition Opening | Sponsored by Vermeer – AU$70
  • Wednesday 11 September: Networking Reception | Sponsored by Vermeer – AU$150
  • Thursday 12 September: ASTT Gala Dinner and Awards Evening | Sponsored by National Environmental Equipment – AU$190 or AU$1,700 for a table of 10

ASTT Awards

Nominations for the ASTT Awards will open soon – keep an eye on Trenchless Australasia and the fortnightly e-newsletter for the latest updates.

For more information visit the No-Dig Down Under website.

If you have an event you would like featured in Trenchless Australasia contact Assistant Editor Chloe Jenkins to discuss promotional opportunities at

Barwon Water drop

WSAA completes first smart lining field trial

The proposal to the CRC was made in August 2018 seeking AU$3 million in government funding to support the research and validation of liners for pipeline rehabilitation.

In February 2019, the first field trial of calcium aluminate cement and geopolymer coatings has been completed as part of the WSAA-led CRC Smart Linings for Pipe and Infrastructure program.

The project is a collaboration between WSAA, manufacturers, applicators, utilities, and researchers, and seeks to improve and validate product and application knowledge, enabling the development of industry standards, specifications and tools and confirming the demand for lining technologies.

The technical deliverables of the program include developing industry standards and guidance documents, analytical tests for validation and lining tests, field testing, and the development and testing of multi-sensor robot prototypes.

The improvements to the design and application of smart lining products will include the commercialisation of intelligent sensing technologies, extended infrastructure life, market growth for Australian lining subject matter experts, and enhanced local lining knowledge and capacity.

For more information visit the WSAA website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Chloe Jenkins at

Calix introduces manhole maintenance program

In order to address the challenge of corrosion to concrete assets that Australian councils and water utilities face each year, Calix’s new program will manage the assets at a cost of AU$1 per day, per manhole for a 10 year period.

The company has developed a vehicle-mounted rig that sprays a long-lasting anti-corrosion coating of specialised magnesium hydroxide – known as PROTECTA-Mag – to protect assets from acid corrosion, without interfering with regular sewer operation.

“Maintaining assets, such as manholes, is a huge undertaking for local councils,” said Calix CEO Phil Hodgson.

“While it may be considered a priority, there is not always the budget to appropriately cover inspections, protective coating, and the administration associated with the asset maintenance.

“This means that, often, manholes can be left unchecked.

“To address this need, Calix is introducing a new program where we maintain these assets for councils for just $1 a day per manhole for 10 years.

“This removes the requirement to set aside large budgets upfront for rehabilitation and removes the risk that the manholes deteriorate because there aren’t funds available.”

For more information visit the Calix website.

If you have news you would like featured in Trenchless Australasia contact Journalist Chloe Jenkins at

Mainmark completes challenging pipe remediation and decommissioning

Contractors were required to abandon an in-ground water pipe and construct a new main: however, removing the pipes using traditional dig methods wasn’t possible as the old pipeline ran underneath a highway, school and private land.

The pipe’s construction and placement less than a metre underground meant there was a risk that it could rust and collapse, potentially damaging the structures above it; the safest and most effective approach was to fill the pipe.

The solution Mainmark provided was Terefil®, a new lightweight cementitious grout solution able to be pumped across long distances, enabling the project to be completed in just four days.

“One of the key features of Terefil is its pumpability,” said Mainmark Group Technical and Research and Development Manager William Lindsay.

“Mainmark placed more than 400 m3 of Terefil along 620 m of the 900 mm diameter pipe in a single shift.

“At its peak, the Mainmark team pumped 68 m3 of Terefil per hour. As a result, the pipe was safely filled without damage or inconvenience to the school or any local property owners.

“A conventional approach would involve digging up to seven holes to access the pipe, which would take approximately a week to complete.”

The Beresfield abandoned pipe project.

Mainmark has also been active in remediating pipe infrastructure assets using ENCAP6®, an anti-corrosion spray-on polymer coating solution with chemical resistance, hydrolytic stability and abrasion resistance, which can be used to rehabilitate and prolong the life of ageing steel or concrete infrastructure.

It can be applied in varying thicknesses to prepared concrete, brick, earthenware, vitreous and metal surfaces to effectively seal and protect the substrate, while delivering long-term structural performance.

In a project to rehabilitate a galvanised steel drainage pipe located below three factories, Gladstone Council utilised ENCAP6 to coat the drain with ENCAP6 and support the pipe by applying expanding engineered resin beneath it.

This allowed the council to prevent the risk of the pipe collapsing due to the surface weight of structures above, while also avoiding excavation, which delivered a significant cost saving.

For more information visit the Mainmark website.

If you have a project you would like featured in Trenchless Australasia contact Managing Editor Nick Lovering to discuss promotional opportunities at

September edition of Trenchless Australasia now online

The digital edition can be viewed on a tablet, computer or smartphone. To view the magazine click here.

The September edition of Trenchless Australasia contains:

  • A look at Queensland Urban Utilities’ record-breaking sewer construction
  • An interview with Ditch Witch’s Christopher Malan
  • A project article on Brisbane’s new Cross River Rail
  • A glimpse at the future of water main renewal from Ventia

And much more!

Want more access?

Trenchless Australasia print magazine subscribers receive early access to the digital magazine before the wider industry, ensuring that they can stay up-to-date with the latest news, industry issues and technology. Other exclusive subscriber benefits include:

  • Four annual print editions of the world’s leading magazine for the Australasian trenchless industry, featuring region reviews, project updates, company announcements and regulatory information.
  • Access to the online archives of Trenchless Australasia.
  • Exclusive invitations and discounts to trenchless networking functions, training courses, and major conferences worldwide.

Want to know more? Click here to subscribe to the free fortnightly e-newsletter to stay up-to-date with all the latest news in the trenchless industry.

Trenchless Australasia is now also on Facebook and Twitter. Follow us to receive the best of the Australasian trenchless industry in your newsfeed.

Final chance to advertise in Australasian Trenchless Directory 2017

Print or online marketing in the Directory is a proven way to increase company exposure and improve brand awareness.

Companies can stand out from competitors with high visibility, while communicating information about products and/or services to potential clients through a company description.

Advertisers are able to select as many product and service categories as desired and can advertise their full breadth of products and services, allowing them to be more readily found by readers.

Advertisers are also able to include a company logo next to their listing, further increasing brand awareness.

The final deadline to purchase advertising is 12 May 2017. To discuss advertising opportunities contact Dave Marsh on +61 3 9248 5122 or

The Abergeldie Watertech crew at work on Lygon Street in Brunswick

Water main spray lining in Brunswick

The conference will take place from 1–4 September 2013 at the Sydney Convention and Exhibition Centre, situated in the heart of Sydney. Just a few minutes from both the harbour bridge and the opera house, it is a modern facility perfectly suited for an international No-Dig. World-class event; world-class speakers The conference program will feature acclaimed international experts on rehabilitation and installation, Super Panels that will tackle contemporary trenchless issues, speakers who have worked on recent large no-dig projects the world over, and streamed technical sessions. Delegates are guaranteed to take plenty away from the conference program, with a range of speakers covering projects, technology, the latest developments, policy and more. Your social ticket to meet the industry Of course it’s not all work – the outstanding social program provides plenty of opportunity to network with old and new colleagues in a more relaxed setting. The 31st ISTT International No-Dig will feature an exciting social program, including a Gala Dinner and Awards Evening as well as a cruise along Sydney’s iconic harbour, allowing delegates to network and meet industry colleagues from the worldwide trenchless network. Early adoption of innovative technology This is the third International No-Dig to be held in Australia; however, it is the first time the event has come to Sydney. A world-class exhibition will see companies from around the world displaying the very latest in products and services. Over 70 per cent of the exhibition space has been sold. And four of the world’s leading companies have joined as Event Partners: HOBAS, Interflow, Kembla and Vermeer. Booths will range from 9 square metre shell schemes to large open plan and custom spaces for major sponsors. The bright and open feel of the centre will ensure the whole event has a modern and free-flowing feel. The exhibition will include wireless internet, catering and coffee stations and lounges. At the 2011 No-Dig Down Under, over 1,000 leaders and decision-makers passed through the exhibition, including delegates and trade visitors. Visitors expected in 2013 include:

  • engineers from utilities and design companies
  • contractors looking for the latest equipment
  • decision makers from local councils and water authorities
  • national and international guests
  • academics and researchers looking for the latest technology
  • trenchless professionals with real purchasing power.

Exhibitors will include contractors, suppliers and manufacturers in areas such as; water, wastewater, electricity, gas and communications. As ISTT Chairman Dr Sam Ariaratnam says, save the dates now: put 1–4 September 2013 in your calendar! For more information on how to register your interest, visit the No-Dig Down Under website

ASTT Award Winners Announced

The Awards recognise outstanding people, projects and new technologies, and are presented in four categories:

    • Project of the Year: New Installation;


    • Project of the Year: Rehabilitation;


    • New Technology of the Year; and,


    Person of the Year.

Project of the Year: New Installation

The nominees were:

    • Australia Wide Directional Drilling’s Kolan River Crossing;


    • John Holland’s Woolloongabba Trunk Sewer Upgrade;


    • Dunstan Drilling’s Caltex Brisbane River Crossing; and,


  • Pressure Sewer Services Australia’s Loch Sport Pressure Sewer Project for Gippsland Water.

The winner was announced as: John Holland’s Woolloongabba Trunk Sewer Upgrade.

Project of the Year: Rehabilitation

The nominees were:

  • Abergeldie Watertech’s Montego Court, Mermaid Waters, Queensland;


  • Interflow and Queensland Urban Utilities’ Rehabilitation of a critical selection of the S1 sewer;


  • ITS PipeTech’s University Culvert Renovation in Mt Ousley Wollongong;


  • Monadelphous Water Infrastructure’s Rehabilitation of Northern Suburbs Ocean Outfall Sewer Maintenance Holes;


  • Nuflow’s Bulimba Siphon Rehabilitation;


  • Insituform’s Stormwater Renewal in the Sydney CBD; and,


  • Insituform’s Trunk Sewer Rehabilitation in Nudgee Road, Brisbane.

The winner was announced as: Interflow and Queensland Urban Utilities’ Rehabilitation of a critical selection of the S1 sewer.

New Technology of the Year

This award recognises a new technology, machine, tool, material, system or technique that contributes to the development of trenchless systems or equipment. The award is presented to a new technology or development that has resulted in benefits such as improved economy, accuracy, speed of drive or replacement and the ability to overcome difficult installations.

The nominees were:

    • Abergeldie Watertech’s Scotchkote Liner 2400; and,


  • Optum lining supplier’s Optum lining equipment.

The winner was announced as: Abergeldie Watertech’s Scotchkote Liner 2400.

Person of the Year

This award recognises an individual who has made major and sustained contributions to the trenchless industry in any area of activity within the industry. It also recognises a contribution over and above the call of duty to grow, develop and promote the use of Trenchless Technology across Australasia and indeed around the world.

The nominees were:

    • Ben Crosby, Bamser;


    • Daniel Gamboa, Insituform Pacific Limited;


    • Lance Horlyck, SAS TTI Joint Venture;


    • Mark Tucker, QUICKLOCK Australia Pty Ltd; and,


  • Peter Klouda, Iplex Pipelines.

The winner was announced as: Lance Horlyck of SAS TTI Joint Venture. The December edition of Trenchless Australasia will be running an exclusive interview with Lance, make sure you subscribe to receive the next edition of the magazine.

The last time the awards were presented was No-Dig Down Under 2013, click here to view the 2013 award winners.

Renewing South Burnett’s manholes

In mid-2014, South Burnett Regional Council, located about two hours north-west of Brisbane, issued its largest ever sewer main relining and junction sealing contract – over 18 km of relining works. The works were to be completed in the 2014-15 financial year with a preference for the relining portion of the project to be finalised before Christmas.

Laying it on the (re)line

One of the key challenges for the council was to ensure these works were delivered safely, quickly and to budget. Queensland-based Abergeldie Watertech Project Manager Christian Dummett said the scope of works and timeline was daunting. “We realised early on that to deliver all the relining works by December we would need to use both of our Queensland crews and additional resources from New South Wales,” he said. “Having access to additional skilled operators meant that in the early stages we could have three lining crews working concurrently. This ensured the target was met.” The scope of the work incorporated approximately 300 assets, and, like any job of this size, there were a range of challenges. These included keeping residents informed, keeping the crews fully utilised and ensuring safe and high quality works.

Bye-bye blockages

Abergeldie Watertech Queensland Operations Manager Paul Hymas oversaw the operation, noted that the company completed the relining works with multiple crews in multiple locations with no variations. “All customer questions were addressed promptly and efficiently,” said Mr Hymas. “Strong on-site supervision by Rob Alexander ensured any site risks and customer or council needs could be managed, including letter drops and door knocking to keep the end customer fully informed. The council was very supportive and provided great visibility of works and known issues which meant we could plan to succeed.” South Burnett Regional Council Services & Project Coordinator Matt Wyvill, who coordinates water and wastewater, said the project ran smoothly and with few issues. The project also highlighted the council’s commitment to ensuring long term sustainability and efficiency of wastewater infrastructure. “We have begun to decrease the number of blockages, surcharges and overflows while also decreasing infiltration and exfiltration of sewage into surrounding soils and significantly extending asset life,” said Mr Wyvill. “Trenchless Technology was determined as the most appropriate and cost-effective method to undertake this work. The benefits of trenchless relining technology for the council include the increased cost effectiveness of renewal instead of replacement, the low impact on surrounding areas, the ability to gain access via existing access chambers and minimal disruption to connected sewerage services.”

The trenchless lining method

Abergeldie Watertech offers a full suite of trenchless renewal methods including, UV-cured, cured-in-place pipe lining, spiral wound lining and the company’s EX fold-and-form method. Due to the nature of the works, and with pipe diameters ranging from 150-300 mm, the EX method was recommended. A PVC no-dig structural lining system manufactured in Australia exclusively for Abergeldie, the soft and folded EX is winched into the existing pipe and expanded using steam to form and fit tightly with the host pipe. The new EX pipe has no joints and provides the same strength, durability and long life of a new PVC pipe. Importantly, EX is able to line through displaced joints which significantly reduces the need for any civil works.

Cross-section of a pipe with the spray liner applied.

Melbourne water utility trialling spray lining

Used successfully across America and the United Kingdom, the new spray lining technology works by applying a quick-curing polyurea solution to the inside of the pipe. The coating is applied using a rotating applicator that moves up and down the pipe, effectively building a new pipe inside the old one. A safe and effective solution, the spray lining technique will reduce the cost and disruption to both the local community and the environment when renewing watermains. If the trial is successful, Yarra Valley Water will become the first Australian water utility to introduce the technology. Yarra Valley Water Managing Director Pat McCafferty said the new watermain spray lining product would undergo rigorous testing before being introduced on a larger scale, with the product potentially revolutionising the way the utility carries out its watermain renewals. “The overall renewal process is much quicker, as the design and approval process is simpler and minimal excavation is needed prior to applying the product. This means we can reduce the inconvenience to customers by minimising the need to dig up entire roads,” said Mr McCafferty. “Customers will also experience reduced disruption to water services, as the pipes can be used around two hours after the lining has been applied. This will speed up the time it takes to return the pipes to service.” The final stage of the trial will commence in July on a stretch of pipe beneath Melbourne’s Clayton Road, a busy thoroughfare. The coating is stated to increase the life of pipes by at least 50 years. Depending on the success of the trial, spray lining may be used to supplement Yarra Valley Water’s existing watermain renewal techniques. The trial is being conducted in partnership with Abergeldie Watertech, the only licensed installer in the country of the lining product, which is owned by 3M

Melbourne water utility trialling spray lining

Used successfully across America and the United Kingdom, the new spray lining technology works by applying a quick-curing polyurea solution to the inside of the pipe. The coating is applied using a rotating applicator that moves up and down the pipe, effectively building a new pipe inside the old one.

A safe and effective solution, the spray lining technique will reduce the cost and disruption to both the local community and the environment when renewing watermains. If the trial is successful, Yarra Valley Water will become the first Australian water utility to introduce the technology.

Yarra Valley Water Managing Director Pat McCafferty said the new watermain spray lining product would undergo rigorous testing before being introduced on a larger scale, with the product potentially revolutionising the way the utility carries out its watermain renewals.

“The overall renewal process is much quicker, as the design and approval process is simpler and minimal excavation is needed prior to applying the product. This means we can reduce the inconvenience to customers by minimising the need to dig up entire roads,” said Mr McCafferty.

“Customers will also experience reduced disruption to water services, as the pipes can be used around two hours after the lining has been applied. This will speed up the time it takes to return the pipes to service.”

The final stage of the trial will commence in July on a stretch of pipe beneath Melbourne’s Clayton Road, a busy thoroughfare.

The coating is stated to increase the life of pipes by at least 50 years. Depending on the success of the trial, spray lining may be used to supplement Yarra Valley Water’s existing watermain renewal techniques.

The trial is being conducted in partnership with Abergeldie Watertech, the only licensed installer in the country of the lining product, which is owned by 3M

Advertising online is a great way to cost-effectively test if a particular market is a good fit for your product or service.

Business marketing: the value of advertising online

Remember when you first developed your company website? Just like email, your website has revolutionised the way you sell your company and its products and services to the world. Search engine optimisation can only take you so far and to reach highly engaged individuals searching for vital information, it’s important for your company to be advertising on the websites that matter in your industry. But what are the benefits of advertising online? Timely promotion and flexibility The immediacy of online advertising ensures that products can be introduced to the market very quickly. There is also design flexibility so web adverts can be eye catching and alternate between different banners. This also allows you to rapidly test different messages in short periods of time to see what is most effective. Tracking capabilities The best thing about online advertising is its ability to track the performance of your campaigns. Through using online advertising your company has the ability to track every single click and every single user to see if they end up becoming customers. It is worthwhile downloading Google Analytics – it’s free and will allow you to track the pathway visitors are taking to your site and their movements within your site. Are your online ads generating traffic? Which sites are referring visitors to your site? Google Analytics can help give you the answers. Cost effective Banner advertisements offer great value due to low production costs. If you have advertised before then you know that just one advertisement may not have the phones ringing hot, so think about what your aims are and perhaps look at booking a series of advertisements and combining this with strategically placed editorial content. Most websites have packages available and these should offer the best value and exposure over varied periods of time. High volume The sheer volume of visitors to industry websites means that by advertising you are highly visible to many new readers and potential leads. Most industry websites offer site visitors a free subscription to their e-newsletter which is often sent weekly or fortnightly to thousands of subscribers. By signing up, these e-newsletters subscribers have demonstrated a high-level of engagement, and so advertising in e-newsletters is highly coveted and tends to be a more exclusive and expensive online advertising option. Test the market Advertising online is a great way to cost-effectively test if a particular market is a good fit for your product or service. If you have a well-designed online advertisement and you are advertising on the right industry website then you should get some decent traffic – and those all-important leads. Entire industry coverage The best way to get entire industry coverage is to take out advertising in print, online, and have an event presence. If your company can only initially afford one or two of these promotional opportunities, the results will speak for themselves and you will have a clear case to argue for an increase in next year’s marketing budget. TIP: If you are taking out multiple advertisements then you should be rewarded with a discount, but also ask about securing some editorial coverage to maximise your impact. Highly targeted Visitors to industry websites are usually looking for information to help them do their job better, so they are highly engaged. Every person who views your advertisement is a prospective customer and you need to convey instantly that your product or service is what they need. Just online, all online? So, you’re a convert – you have decided your company needs to start advertising online. But what about your magazine advertising and exhibiting at prominent industry trade events? The good news is that online advertising is the perfect complement to your other marketing efforts. Online advertising is rarely enough on its own but by combining it with print and event participation in a strategically planned campaign, your company will receive maximum industry coverage and make a significant impact. Writing your advertisement Perhaps you have tried online advertising and you didn’t get the great results you expected. Be warned: the advertisement you run in your print campaign will not be suitable for online. If you use the same sort of advertisement you are unlikely to get the traffic you deserve. For best results you should make an offer and be instructive (find out, how to, click here). Through the use of ‘active words’ (for example: order, reduce, choose, use, apply), you can entice people to click your advertisement and learn more about your offer/product/company.

Last chance to be a part of the 2015 trenchless directory

The ASTT’s annual Australasian Trenchless Directory is gearing up for print – contact Lisa Feagan now to book your ad space to avoid missing out.

The Australasian Trenchless Directory is a constant reference source throughout the year for decision makers. Nearly a quarter of all online traffic to the Trenchless Australasia website is generated by users searching companies in the directory, with the directory accruing over 37,000 page views.

Also available in an A5 hard copy edition, more than 3,000 printed copies of the Australasian Trenchless Directory are distributed to over 10,000 readers.

Stand out from the crowd

Advertising via a print or online package in the Australasian Trenchless Directory is a proven way to increase company exposure and improve brand awareness.

Combining a company listing with a print advertisement, companies can stand out from competitors with high visibility communication of products and/or services to potential clients.

With a directory advertiser able to select as many product and service categories as desired, companies can advertise their full breadth of products and services and can therefore be more readily found by readers.

Advertisers are also able to include a company logo next to their listing, further increasing brand awareness.

Tips for connecting directly to trenchless customers

With billions of dollars of upgrades required for Australasia’s ageing underground infrastructure, Trenchless Technology is poised to enter a golden age. But how do you best connect directly to current and future trenchless customers?

For free advice and tips, read our Ultimate Guide to Search Engine Optimisation here.

New look Trenchless Australasia site now live!

The fortnightly e-newsletter will also be launching soon, which has been given a design overhaul, including a fresh look, better navigation and responsive design in line with an increasing readership across different devices.

The new website and e-newsletter will ensure that readers can access the latest news and analysis in Australasia’s trenchless industry quickly and easily on any device.


The site has been designed to provide a better reading experience, with the introduction of a simpler, cleaner visual design and enhanced navigation.

More content is viewable on the home page, navigation has been streamlined and we’ve made it easier to find the articles that interest you most by introducing a category menu bar. Clicking on any of these categories will bring up additional sub-categories for those who have a specific interest in one area of the industry, or in one particular Trenchless Technology type.

The fortnightly e-newsletter has been redesigned to allow for additional content, including featured tweets, recommended articles and more news.

Responsive across devices

We have seen a huge increase in the number of readers using mobile devices and tablets to access the Trenchless Australasia website and e-newsletter and the new responsive design is all about making it easy to access this information anywhere, anytime.

Speed and reliability

The new website has been optimised to improve download efficiency, which will mean it’s faster and more reliable.

Continuous improvement

These are just the first steps to ensure that the Trenchless Australasia site and e-newsletter meets the ever-evolving needs of our online audience. We already have a second phase of improvements in development, including enhanced photo and video galleries and the ability to bookmark your favourite articles for later reading.


The Trenchless Australasia team welcomes feedback about the new site and e-newsletter via the site survey (which will appear the first time you visit the new site), or alternatively by contacting the Trenchless Australasia team at +61 3 9248 5100

Learn about new lining technologies

Dr Dae-Hyun (Dan) Koo will outline the development of the new technology and discuss the benefits of trenchless water pipeline rehabilitation using polymeric lining methods.

About the speaker

Dr Koo is an assistant professor in the Department of Engineering and Technology at Indiana University and Purdue University Indianapolis, US. Dr Koo’s research and professional activities are primarily focused on underground infrastructure system management and development, trenchless engineering, and sustainability. Dr Koo received a PhD in Civil and Environmental Engineering and a Masters in Construction Management from Arizona State University in 2007 and 2003 respectively; and a Bachelor in Civil Engineering from Kwandong University, South Korea in 1999.

Manhole rehabilitation made easy

Protective Liner Systems’ PepetuWall is a new, cured-in-place fibreglass and epoxy composite system that combines the strength of concrete and the chemical resistance of coatings.

Coatings systems often rely on the surface they are applied on to provide support to prevent their failure; while cementitious materials can lack the chemical resistance to survive when exposed to high levels of hydrogen sulphide, regardless of their type and additives. Cementitious material can also be brittle and lack tensile strength.

PepetuWall addresses all of these issues and offers a complete and proven rehabilitation system. Its unique layered composite construction and installation gives it the strength to last, and it adheres to the host structure completely so that infiltration and corrosion are stopped completely.

PepetuWall has been tested and used in the United States for over twenty years, successfully stopping infiltration, corrosion and tree root intrusion. Australian Drain and Pipe Repairs (ADPR) is now importing the product
for use in the Australian market.

ADPR Business Development Manager Chris Mayo said it was PerpetuWall’s impressive track record that won ADPR over when they were looking for new products to complement their pipe inspection and relining services.

ADPR has had training with Protective Liner Systems in the United States and has already completed a number of projects in Australia with PerpetuWall, finding clients very receptive to the technology.

With cementitious materials, epoxy coatings, and the PepetuWall rehabilitation system, ADPR now offers an entire range of rehabilitation products for access chambers and similar structures. ADPR hopes to give system owners more choice and value when working to rehabilitate their sewer structures.

A strong shield for manholes

The patented SpectraShield liner is a spray-applied, silicone-modified polyurea system, that is used to rehabilitate and protect wastewater structures such as manholes, wet wells or wastewater treatment plant facilities.

Specialising in various aspects of drain cleaning, CCTV, pipe relining and maintenance, NuJet has developed strong working relationships with numerous councils and water authorities in Victoria and Tasmania including Southern Water and Yarra Valley Water.

This has given NuJet greater insight into common industry issues and needs. Through the company’s efforts to continually innovate and introduce greater efficiencies into its services, NuJet became aware of the SpectraShield lining systems product that was in use the United States of America and immediately recognised the value it could bring to large-scale water systems in Australia.

NuJet developed a relationship with CCI Spectrum, the designer and manufacturer of the SpectraShield liner systems. NuJet has aligned with CCI Spectrum and licenced the rights to the innovative SpectraShield lining systems for use in Australia and New Zealand.

This new service line involves relining new and existing water structures using a multi-layered lining system. Water structures may include wastewater facilities, pumping stations, and sewer access chambers.

SpectraShield applicators are thoroughly trained in all facets of system preparation and application, as well as safety and quality control.

SpectraShield is installed using trenchless techniques, which minimises disruption to the surrounding environment.

Engineered to be cost competitive with other leading lining systems, SpectraShield has been installed in over 20,000 structures around the world, totalling more than 762,000 square metres.

Extra care with manhole shafts and sewers

In particular, when operatives enter the sewerage system, it is vital to observe very high safety standards.

As in all areas of operations, rules are often ignored and while accidents are relatively rare, carelessness creeps in, leading to a growing number of serious injuries and even death.

Wherever working inside the shaft or sewer can be limited as far as possible – or even avoided altogether – while maintaining high safety standards, then risk to the workforce is kept to a minimum.

There are many methods currently available for rehabilitating sewer shafts. The principal method is to coat the shaft with cement-based mortar. The techniques are described in the German Association for Water, Wastewater and Waste’s (DWA) leaflet M 143-17, and the specifications for the mortars in the German Society for Trenchless Technology’s Information sheet number 18.

The DWA advocates the development of a secure and sustainable water industry and is a politically and economically independent organisation that works in the specialist fields of water management, wastewater, waste and the protection of soil.

A German Institute for Standardisation (DIN standard) is in preparation, to be called DIN 19573. It will be based on EN 1504. DWA M 143-17 covers coating by hand, the wet spray technique and the centrifugal spray procedure.

The M-Coating centrifugal spray process developed by Hermes Technologie of Schwerte is the only such process to have achieved DiBT approval, which is the only German approval body for construction products and types of construction.

This process, which is also approved for use in drinking water protection zone, comprises cleaning, sealing off leaks, injection even in the worst cases of erosion or groundwater infiltration, and coating.

M-Coating – cleaning with the highest safety standards

In the M-Coating procedure, Hermes offers fully-automated shaft cleaning using high pressure water jets, and in the latest version fully-automated sand-and-water blasting.

This technique removes the need to go into the shaft in order to perform the blast-cleaning procedure.

The whole operation is set up and observed from above, outside the shaft. Although the operator is not in close proximity to the jet nozzles and not in a confined space, he wears protective goggles against small flying stones and follows health and safety regulations as prescribed.

When jetting at high pressure, a lance of length 700 mm is stipulated. It is also true that blast-cleaning is best when the jet strikes at right angles. It is questionable whether this is feasible in a 1 m diameter shaft without using the M-Coating apparatus and its components, says Hermes.

In practice, operators decide on what they suppose is a good position to work from, shorten the lance, work inside the shaft and so constantly break the health and safety rules.

Moreover, jet-blasting inside the shaft means that it is not possible to take measurements of gas levels, there is no equipment that can continue to function in the presence of such large amounts of water. By taking this approach, the operator – together with the site manager and the employer – is running an incalculable risk. The contractor scheduling the work is liable because it is assumed that it is known that the work is not being carried out in compliance with the rules.

Where the M-Coating system with the TSSR or the HDS jet is used, the picture is completely different. Cleaning is automated and is directed from above, outside the shaft. It is now possible for shaft cleaning to be carried out without operators being sent into the shaft and questions of liability no longer arise for the site manager and the contractor.

Shaft coating with high safety standards

Even when coating shafts, it is no longer necessary for operators to stand inside the shaft, thus avoiding the immediate dangers presented by wet spray coating or coating by hand in confined spaces.

Young operators in particular often underestimate the health risk posed by working day after day in wet shafts. In the past this was unavoidable, but today the M-Coating system has been developed with particular regard to the health of the operator. There are hardly any shafts that cannot be recoated. They can be circular or rectangular, with a diameter of 600 mm to 3 m, and of any depth. The deepest shaft treated so far measured 25 m.

The coating can also vary between 5-100 mm. The cement-based ERGELIT mortars used have very positive ratings, both from an environmental point of view and with regard to their impact on health. The dry mortar is mixed with drinking-quality water, and the cleaning is carried out using drinking-quality water, which contributes to maintaining employees’ health.

It is nearly always the case that sickness in the workplace is only recognised as an industrial disease after it has around for many years, many employees have fallen ill and the law has become involved.

Employers must take this into account, and from the outset plan techniques and materials that are not a cause for concern because employees are never exposed to immediate danger.

If user-friendly equipment like the M-Coating system is adopted, there is an immediate benefit in terms of the employees’ working conditions, which is the first step towards excellent quality assurance.

When working conditions reflect high technical standards, workers make fewer mistakes. They do not tire so quickly and still work accurately after eight hours.

To give a clearer comparison of the various systems, we have set out the safety aspects involved, in Table 1.


The ratings given in Table 1 give a clear indication of the advantages of each technique and enable one to choose the right method for specific applications.

The observations contained in the text and ratings table above highlight safety aspects. Safety in the workplace is a matter of economics. Industrial accidents create unforeseen and incalculable costs in terms of sick days, delays and missed deadlines.

When choosing an operating method, the possibly higher outlay should not deter one from opting for modern, machine-aided techniques. Shaft rehabilitation is the M-Coating system’s speciality; the slightly higher outlay compared with conventional methods is justified by the efficiency, quality and high safety standards provided.

Manhole rehabilitation at the University of Melbourne

Located within a metre of a magnificent oak tree and in the middle of the sandstone paved courtyard thoroughfare there is a sewer manhole that services a large number of washrooms and student facilities.

The firm that provided maintenance services for the site regularly had to unblock the sewer which was filling with roots, and the man hole was in danger of future collapse due to massive root intrusion.

Perma-Liner Victoria, which is certified by Heritage Australia as an approved Heritage Site Contractor, was called in by the maintenance firm to fix the problem.

Safe site management was paramount, with thousands of students moving around the site, as was ensuring no damage was caused to surrounding structures or trees.

Initial high pressure water jetting and manual root clearing was undertaken around the top sides, walls and benches.

Then gaps, holes and areas where mortar had been eaten away were filled with a water stopping compound called FIX 10 S, a proprietary product from Perma-Liner that seals holes within 30 seconds and take the pressure of a 90 m head of water.

Two coats of Perma-Poxy, another proprietary product from Perma-Liner, were then applied. Perma-Poxy is a two part epoxy that completely seals a surface with a H2S resistant coating. The surface dries to a smooth, almost glazed type surface, that does not allow fats or sewer to stick to it.

Perma-Poxy can be applied by spray, trowel, brush or roller. Due to the small working space and the requirement to keep noise to a minimum within the University grounds, it was decided to enter the man hole and apply it manually. Perma-Liner Victoria is accredited by the CCF and has all necessary CSE tickets and compliances.

The job was successfully completed with both the client and University happy with the end result – and twelve months later the manhole surface looks the same as the day Perma-Liner left the site.

Semi-structural lining breakthrough

The company’s main focus is on R&D and as a result the company embarked upon a program to look closely at the pipeline rehabilitation market. This sector had previously relied upon total replacement with polyethylene pipe, or in the early days cement linings, and more latterly epoxy resins lining, to offer non-structural long term protection to the pipe.

In situations where water quality issues rather than structural concerns have been the main driver, non structural spray lining offered a minimum cost alternative to renewal with polyethylene pipe.

The non-structural spray lining process utilising epoxy resin was adopted by many water companies during the 1990s, however the process was disadvantaged by the slow setting characteristics of epoxy resin, which required a minimum 16-hour cure period before commencement of return to service procedures. This often resulted in 36 hour shut-down periods, during which consumers would be without water supplies.

Acknowledging the drawbacks associated with the use of epoxy resins, E.Wood developed a revolutionary rapid setting polymeric lining, Copon Hycote 169, which following its introduction in 1999 has transformed the non-structural rehabilitation strategies of the majority of UK water utilities.

Due to the rapid setting characteristics of the product, shut-down periods are dramatically reduced, resulting in same day return to service. The company has now lined in excess of 15,000 km of pipeline in the UK with this technology.

Recognising the gulf that exists between non-structural lining and total renewal techniques, E.Wood has now expanded on the product, developing Copon Hycote 169HB, a semi structural lining product.

This next generation rapid setting polymeric lining now offers a semi-structural spray lining alternative to conventional polyethylene replacement technologies without the large scale disruption and lengthy time usually taken to install these systems.

Copon Hycote 169HB is a tough and ductile material that can be sprayed onto cast iron, ductile iron, and asbestos cement pipelines at a single pass thickness of 3 mm for pipes operating up to 10 bar pressure .

The product is sprayed into the host pipe and the operating pressures and external loads are withstood by composite action, except where the lining is required to span any local damage zones which may manifest themselves after application of the lining

This semi structural lining is designed to maintain its longitudinal continuity even in the event of transverse (back break) fracture of small diameter pipes.

One of the main advantages is that during spraying, the product does not block service connections, meaning that following the application there is no need for any secondary work to re-establish the connection, or re-open the connection.

The product has been fully tested and evaluated to establish its mechanical performance and properties, and the product has approval under Regulation 31(4)(a) of the Water Supply (Water Quality) Regulations. Copon Hycote 169HB has a minimum 50-year design life.

Copon Hycote 169HB is now becoming recognised as a true alternative to pipeline replacement, and the short period of time to install without the large scale traffic management issues means that semi structural lining is now considered to be the way forward for water companies in the future.

E.Wood Ltd can be contacted at Standard Way, Northallerton, North Yorkshire, England DL6 2XA, on the web at or via email at

An Australian First

Hycote is a breakthrough product in the field of pipeline rehabilitation. It has been developed as a rapid-setting high build polymeric lining system that will confer structural properties to water mains. Based on its UK track record, this spray lining system will provide water authorities with a cost-effective alternative to conventional watermain renewal in Australia.

The product is sprayed into the host pipe (nominally 3 mm thickness) by purpose-built lining rigs. Spray lining enhances the original pipe structure and is designed to maintain its continuity in the event of most pipe failure modes typically found in small diameter pipes.

One of the key advantages is that during spraying the product does not block service connections, meaning that following the application there is no need for any secondary work to re-establish the connection or reopen the ferrule with a same day return to service. In addition, no temporary supply works are required. The product has been fully tested and evaluated in the UK to establish its mechanical performance and properties.

The spray lining system can be applied to cast or ductile iron, asbestos cement and previously coated or repaired pipes. It is now recognised as a true alternative to pipeline replacement, and the same-day return to service benefit means that spray lining is now considered to be the way forward for water companies.

Rehabilitation strategies for water mains are generally based on either burst history or a condition assessment of the pipeline to be renovated. Internal and external corrosion pit depth measurements made on exhumed pipe samples, allied to a simple corrosion model, enable predictions to be made regarding the residual asset life. This fairly simplistic approach inevitably results in mains being renewed, which are essentially sound, but may be likely to sustain only local damage during their lifetime. Extensive field trials have proven that spray lining confers structural properties when used in composite with host pipes that are merely aged, have localised damage, or have burst histories, thereby offering longitudinal continuity to the pipe and resistance to future transverse pipe fracture, with full carrying capacity maintained for a minimum period of 50 years.

Since its availability in late 2004, over 180 km of semi-structural lining has been installed in the UK and is experiencing a rapid growth in market share over traditional rehabilitation techniques. Users of the spray lining process include: Yorkshire Water, South West Water, Bristol Water, Northumbrian Water, Northern Ireland Water Services and Thames Water (about to start). Yorkshire Water has been an advocate of the spray lining process using both the structural and non-structural lining system within their renewals program. When a pipe is lined with Hycote, Yorkshire Water assumes that it has the full 50-year asset life. They are now looking at rehabilitation projects from the perspective of “is it possible to spray line this pipe” to “why can’t we spray line this pipe.” In addition, through the adoption of spray lining in their renewals program, one UK Water Authority has realised a bottom line improvement in their capital expenditure of å£20million to date. Spray Lining is now becoming recognised as a true alternative to pipeline replacement; an environmentally suitable, less disruptive, lower cost method of pipeline rehabilitation to conventional replacement / PE technologies.

Summary – Product Attributes

* Certified under AS/NZS 4020
* Rapid setting polymeric lining, 1 hour cure period before commencement of return to service
* Same day return to service
* Obviates reinstatement of service connections (does not block service connections)
* Structural properties (within normal operating parameters) enhancing original pipe structure
* High build capability – linings of up to 5 mm thickness in a single application
* Restores hydraulic capacity with a minimum 50-year design life
* Corrosion void spanning capability (up to 8 mm)
* Tough, ductile material with high abrasion resistance that at 3mm lining thickness can withstand operating pressures of 100 m head
* Maintains longitudinal continuity in the event of transverse fracture
* Cost-effective environmental alternative to conventional renewal techniques
* Lined pipe can be drilled, tapped and connected to mains using standard equipment.

Sydney Water Corporation – Spray Lining Field Trial

CLM Trenchless is the first Certified Licensee for the delivery of the spray lining system in Australia. It has acquired a purpose built spray lining rig from the UK. An experienced crew has also been employed to ensure that the technology is successfully introduced into the Australian water industry. A program of field trials was begun with Sydney Water in mid October 2007. Sydney Water has been very interested and supportive of the technology given the potential community and cost benefits that can be realised. This trial (as well as others planned in South Australia for SA Water) will validate both the technical and commercial performance requirements and benefits of the spray lining technology from the perspective of both CLMT and the Water Authorities.

Project Overview


Rehabilitation through spray lining of more than 1,500 metres of 100mm and 250mm CICL watermains in some of the busiest locations in metropolitan Sydney. The works will be performed by CLM Trenchless as a turnkey project which includes renovating the selected watermains through spray lining, installation of new valve connections and refurbishment of hydrants. The length of the spray lining run is typically determined by the location of valves, bends and traffic hazards.


Much has been learned through this first project, which is the major objective of a trial, to address the key differences between water networks in the UK and those in Australia (and specifically Sydney Water). For example, unlike the UK, most watermains in Sydney are cement lined (some in situ). For a 100 mm diameter main this means a smaller diameter (90 mm) that typically is not uniform increasing the drag resistance of the umbilical hose used in spray lining. As part of our commitment to continuous improvement we are investigating adapting the skid design to better accommodate the cement lining, differential diameters as well as poorly installed joints.

Pipe samples taken during the trial including a main tap verified the lining quality and the ability of spray lining to successfully not block service connections. Ultimately, the key objective is to ensure that spray lining is considered an integral part of any ongoing watermain renewal strategy and program in Australia as it has successfully done in the UK.