View the latest trenchless technology tenders

View the latest trenchless technology tenders

North West Ashburton Wastewater Servicing

Issued by: Ashburton District Council

Closing Date: 17/06/2022

Location: New Zealand

Description: The Ashburton District Council is seeking tenders for the provision of civil, mechanical and electrical construction services to supply and construct the Council’s planned programme for North West Ashburton Wastewater Servicing.

The Contract Work includes (but is not necessarily limited to):

  • Confirming locations of existing services in the vicinity of the works and setting out the location of new pipes and components.
  • Supply and installation of multiple pipework for wastewater mains.
  • Supply of 15m of new DN250 steel carrier pipe, installed via trenchless methods.
  • The mechanical fit-out of the pump station. Pumps will be staged over the life of the station.
  • Supply and installation of an odour control system for the discharge manhole, consisting of an Armatec green dome filter.

Coffs Harbour Bypass – Tunnel Technical Lead

Issued by: Transport for NSW (Roads and Maritime Projects)

Closing Date: 02/06/2022

Location: New South Wales

Description: Tenders are invited from suitably qualified tunnel consultants to lead the team during detailed design and through construction on the Coffs Harbour Bypass Project.The Tunnel Technical Lead will be a subject matter expert (SME) and provide high quality detailed design advice, engineering knowledge and effective project management skills to drive successful outcomes during construction.

This will include but is not limited to:

  • Informing construction methods for drill and blast tunnelling in hard rock.
  • Tunnel lining design.
  • Cross passages design.
  • Mechanical and electrical experience with the capability to lead technical M&E experts.

Culvert Post 119 Pipe Jacking

Issued by: Department of Transport and Main Roads – RoadTek

Closing Date: 02/06/2022

Location: Queensland

Description: RoadTek are required to undertake pipe jacking on the Gulf Development Road east of Georgetown. The proposed pipe is 26.6m Client supplied DN1650 Class 4 Butt Joint RCP around 1500mm Steel pipe.

Tender for the Construction of Verve Estate, Clyde North, Branch Sewer (21PD7239)

Issued by: Reeds Consulting Pty Ltd

Closing Date: 02/06/2022

Location: Victoria

Description: Reeds Consulting Pty Ltd on behalf of Goldfields Clyde Management Pty Ltd invites tenders from South East Water accredited contractors (Category SC1, SC1(a), SC2) for the construction of approximately 334 metres of DN300mm, 138 metres of DN225mm, 140 metres of DN150mm of branch sewer required for the development of Verve Estate Branch Sewer, Pattersons Road, Clyde North.

Jacking Pipe Supply

Issued by: City of Townsville

Closing Date: 23/06/2022

Location: Queensland

Description: Townsville City Council requires the manufacture and supply of large diameter jacking pipe (envelopers), associated fittings and the like, etc. to be delivered duty paid just in time to nominated locations along the pipeline alignment in accordance with the specified requirements.

Email for more information.  

For more tender information visit the Australian Tenders website

Veolia acquires Allpipe Technologies

Veolia acquires Allpipe Technologies

Veolia announced on 17 May 2022 its acquisition of Allpipe Technologies, a specialist Perth-based business. As an established provider of sewer network maintenance, Allpipe has over a decade’s worth of experience delivering trenchless solutions for councils across Perth.

The deal sees the expansion of the Veolia water network services, with activities to begin in Western Australia, and the subsequent strengthening of the company’s position as Australia’s leader in water solutions.

The strategic purchase will see the two businesses combine assets, furthering the possibility of new opportunities for sustainable water management activities.

Veolia’s chief operating officer for water, Daniel Spiller, says the purchase of Allpipe Technologies marks an exciting step for both company’s and will increase the scope of the services Veolia can offer the state.

“With our existing industrial services and waste activities, the expansion of our water business will complete our ability to drive a full complement of solutions for customers. Working as part of our network services business, the acquisition will bring new opportunities to drive innovation and whole-of-life network solutions.”

The acquisition will see Allpipe’s local assets transfer to Veolia along with all its current employees, including the former owners whose wealth of knowledge will be an asset to Veolia throughout the transition.

“There are strong synergies between our organisations and a shared commitment to building a successful relationship that benefits our customers,” said Spiller. “Veolia already operates similar businesses on the east coast so the opportunity to expand in Western Australia by combining with some local expertise was too good to miss.”

“I’m confident it’s the start of a long and successful engagement for Veolia’s water business in Western Australia,” he said.

Veolia’s water activities help Australian utility providers and businesses to p[reserve and secure water supply, through its services in waste and wastewater treatment, asset management, reuse recycling and network services.

No-Dig Down Under

Spoilt for choice at the No-Dig Down Under conference

NDDU is the southern hemisphere’s only large-scale conference and exhibition dedicated to trenchless technology. Trenchless technology is important for installing new services, as well as rehabilitating and maintaining existing pipelines and infrastructure, without having to dig multiple trenches, disturbing traffic, business and residential locations.

With major utilities located underground and requiring ongoing upkeep and extension, No-Dig Down Under is a crucial event for local government representatives and those involved in planning decisions for major infrastructure projects.

The No-Dig Down Under 2022 conference will feature three dedicated session streams: installation, rehabilitation and condition assessment and utility location.

The No-Dig Down Under conference promises to bring attendees the very latest information about products designed to make trenchless installation and rehabilitation easier and more efficient.

Attendees will be able to hear from Katharina Helming from SAERTEX multiCom. Helming will be discussing the revolutionary SAERTEX-LINER® H2O (winner of the 2019 ISTT No-Dig Innovation Award). Sean Wharton from HammerHead Trenchless will also be discussing the newly developed Steel Extractor system and trenchless extraction process.

The No-Dig Down Under conference will also feature a number of project case studies that will discuss successes and areas for improvement, to help keep industry members up to date on best practice.

Hear from John Stuart-Robertson from HDI Lucas, Will Zillman from Interflow, Matthew Lyon from SFPJV (a joint venture of Abergeldie, Downer and Stantec) and Matt Beswick from McConnell Dowell, as they examine the successes of rehabilitation and improvement projects.

Research and development undertaken over the past few years proposes new classifications and solutions designed to improve and support targeted decision making for those involved in the trenchless industry.

Attendees will hear from Professor Marjorie Valix from the University of Sydney, discussing new proposed levels of corrosion classification for wastewater environments, Steven Nash from the Golburn Valley Water Authority, looking at the draft Asbestos Cement Water and Sewer Pipe Management Guidelines developed by the Water Pipes Working Group.

Cherdphong Seedao from the University of Sydney will also be discussing the development of one-part geopolymer mortars and their usefulness as a protective sewer coating.

NDDU is set to be held at the International Convention Centre Sydney from 14-17 June.

To get your free ticket to the NDDU exhibition, register for the conference, or find out more information about the event, click here.


WSAA welcomes release of final flushable products standard

Executive Director of WSAA, Adam Lovell was excited by the release of the Australian and New Zealand standard.

“One of the first of its kind internationally, it is the result of ground-breaking collaboration between manufacturers, water utilities, peak bodies and consumer groups,” he said. “We know others internationally have been watching the development of this standard.”

Interest in adopting the standard internationally has already been recorded, with Israel having advised it intends to adopt the standard with no changes.

“While the standard is voluntary, it provides manufacturers with clear pass/fail criteria for products suitable for toilet flushing. Importantly it includes requirements for clearer labelling so customers know for certain whether a product is safe for flushing,” Lovell said. 

“The message from the water industry has always been—only flush the 3P’s. Now we can also check for the flushable symbol. If there is no flushable symbol on the packet then don’t flush it, bin it.”

Likewise, Lowell went on to state that while it’s common knowledge that wipes and other items shouldn’t be flushed, when they do manage to make their way into the pipes they can become a massive issue for water utility services.

In Australia and New Zealand alone it costs water utilities tens of millions of dollars each year. Issues like disruptions in customer services, extra costs incurred by customers and utilities and a negative impact on the environment via overflows can all be caused by simply flushing the wrong thing down the toilet.

WSAA and the urban water industry in AU and NZ have been concerned about the contribution of wet wipe products to pipe blockages for some time. The issue was only exacerbated by the global COVID-19 pandemic. During the pandemic, members reported a sharp increase in blockages due to people flushing materials never intended to go down the toilet, such as wet wipes and paper towel.

Manufacturers are expected to begin using the flushable symbol sometime in the latter half of 2022. The symbol will be granted to products which pass select testing criteria, including six tests and an attestation that no plastic is contained in the product.

WSAA have declared that it will continue to monitor the impacts that items wrongfully flushed on wastewater systems have on the industry. Likewise, it’s committed to continuing their engagement with customers and stakeholders to increase awareness of the issue.

ASTT No-Dig Down Under scholarships

Utility and council scholarships on offer at NDDU

The scholarships will allow key members of Australasian utilities and councils to attend the event with reduced costs and aims to bring more employees from these organisations to the event, thereby increasing the knowledge of trenchless technology.

NDDU is the southern hemisphere’s only large-scale conference and exhibition dedicated to trenchless technology. Trenchless technology is important for installing new services, as well as rehabilitating and maintaining existing pipelines and infrastructure, without having to dig multiple trenches, disturbing traffic, business and residential locations.

With major utilities located underground and requiring ongoing upkeep and extension, No-Dig Down Under is a crucial event for local government representatives and those involved in planning decisions for major infrastructure projects.

The following scholarships are available: five conference registrations for New South Wales-based utility or council representatives and five conference registrations and complimentary (accommodation during the event for interstate-based utility or council representatives).

The recipients of the scholarships also will be offered the opportunity to be interviewed for Trenchless Australasia, the official publication of ASTT. In addition to this, they will also be profiled in the October issue of the magazine, the official conference edition.

Eligible representatives can submit their application via an online form, which requires contact information and a series of general questions. Applications close Friday 20th May 2022.

To submit an application, click here.

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Stormwater Asset Upgrades at Jeep Road, Clunie Avenue and Kainui Catchments Stage 1

Issued by: Kapiti Coast District Council

Closing Date: 19/05/2022

Location: New Zealand

Description: Tenders are invited from interested suppliers, the contract covers the following work in Paraparaumu area of Kapiti District not limited to:

Installation of new stormwater pipes using open excavation technology

  • Installation of new stormwater pipes using directional drilling technology
  • Rehabilitation of existing pipes using structural lining technologies
  • Installation of new manholes, sumps, sump leads
  • Preparation and submission of as-builts as per Kapiti Coast District Council requirements.

Stage 2 NSW CO2 Storage Assessment Program – Provision of directional drilling, measurement while drilling and logging while drilling services

Issued by: Mining, Exploration & Geoscience (Regional NSW)

Closing Date: 30/05/2022

Location: New South Wales

Description: The Geological Survey of NSW is issuing this Request for Tender to procure directional drilling, measurement while drilling and logging while drilling services for exploration activities in Stage 2 of the NSW CO2 Storage Assessment Program. Suppliers are invited to submit a tender for the provision of all equipment, materials and personnel for the provision of these services to support the drilling of three exploration wells in August 2022. This service includes the provision and operation of motors and instruments that are attached at or near the drill bit to help efficiently drill the well.

D&C Replacement Covers and Liners for the Poowong and Devon North CWS Basins

Issued by: South Gippsland Water

Closing Date: 27/05/2022

Location: Victoria

Description: South Gippsland Water invite tenders to complete the design, supply, construction and commissioning of fully enclosed floating flexible geomembrane cover, geomembrane liner and associated works for its Clear Water Storage Basins at Poowong and Devon North. 

Provision of Stormwater Pipe Relining & Associated Works for Hume City Council

Issued by: Hume City Council

Closing Date: 19/05/2022

Location: Victoria

Description: Council is seeking the services of one or more suitably and experienced contractor to undertake the provision of Hume City Council’s Stormwater Pipe Relining and Associated Works. 

Broken Hill Sewer Lining Project

Issued by: Essential Energy

Closing Date: 01/06/2022

Location: New South Wales

Description: Essential Water invites responses from suitably qualified organisations using appropriate equipment for the Broken Hill Sewer Lining Project.

Provision of Stormwater Pipe Relining & Associated Works for Hume City Council

Issued by: Hume City Council

Closing Date: 19/05/2022

Location: Victoria

Description: Council is seeking the services of one or more suitably and experienced contractor to undertake the provision of Hume City Council’s Stormwater Pipe Relining and Associated Works. 

CCTV Inspection & Clearing of Stormwater Drainage Pipes, Pits & Associated Maintenance Works

Issued by: City of Greater Dandenong

Closing Date: 19/05/2022

Location: Victoria

Description: The work under this specification consists of the closed circuit television (CCTV) inspection of Council’s drainage pipes, the clearing of pipes and pits (including private property rear easements) and minor internal point repairs to pipes at locations and times as instructed by the Superintendent throughout the term of the contract.

CCTV Survey, and Cleaning Services for Wastewater Mains

Issued by: SA Water Corporation

Closing Date: 19/05/2022

Location: South Australia

Description: SA Water Corporation invites tenders from potential suppliers for the provision of CCTV Survey, Cleaning, and Reporting Service. 

Relocation of Water Mains

Issued by: Department of Transport and Main Roads – RoadTek

Closing Date: 19/05/2022

Location: Queensland

Description: RoadTek are undertaking preliminary works for the Mossman Daintree Stage 3 Project. The scope of work for this contract includes all works associated with the relocation of water main as part of the upgrade of Mossman Daintree Stage 3 (655).

Email for more information.  

For more tender information visit the Australian Tenders website

Carbon Calculator

Carbon Calculator key to reducing trenchless industry emissions

Not only is trenchless works typically more time efficient than open cut alternatives, meaning that machinery is operated for shorter periods, but traffic fuel consumption is lowered by trenchless methods.

By avoiding traffic disruptions, trenchless projects prevent the delays and detours associated with conventional underground infrastructure projects. This lowers the amount of petrol consumed, and subsequently reduces carbon emissions.

In addition, according to a study conducted for the North American Society for Trenchless Technology (NASTT) by the University of Waterloo, located in Ontario, Canada, it found that trenchless job sites produce fewer emissions.

They require minimal construction machinery and equipment as there is no need for excavation, compaction, backfilling and re-paving, dramatically reducing fuel consumption.

With the industry focused on preserving the environment and reducing emissions, the ASTT created a Carbon Calculator to promote innovation in the trenchless technology sector.

The purpose of the ASTT is to advance the science and practice of trenchless technology for the public benefit, while promoting education, training, study and research and practice for the public benefit and to publish the useful results of the same.

With this in mind, paralleled with the global goal of reducing carbon emissions, the ASTT formed a Special Interest Group (SIG) of leading industry professionals to create a solution that supports the mitigation of climate change impacts.

ASTT Councillor Matthew Boyle says the ASTT embarked to create a SIG to look at the impact trenchless technology has in reduction carbon generation in construction projects. “The SIG’s purpose was to provide members with access to a Carbon Calculator to quantify, and therefore promote, trenchless technology as a lower carbon emissions alternative to Excavate and Lay,” he says.

“The primary focus of the SIG was to provide members a tool to compare greenhouse gas emissions using comparative approaches in the capital delivery of services.”

As a result, the SIG approached the market for the development of the calculator and selected the Moata Carbon Portal from Mott MacDonald in August 2020.

At the time of release, it was the first carbon calculator capable of measuring the capital and operational carbon footprints of building information modelling (BIM) designed assets.

Boyle says following Mott MacDonald agreeing to be on board with the ASTT, the SIG moved into trial phase where asset owners were selected to use to the tools in their businesses for best use practices in Australia.

However, it was here where the process stalled and the use of the calculator in the trial was limited, little feedback was submitted, and the pandemic hitting Australia.

Boyle says the SIG has currently been suspended until further legislation and member support.

“We went with Mott McDonald because in New Zealand there is a legislative requirement to monitor carbon emissions, but until there is something in place like this in Australia, the SIG has come to a halt.”

In December 2021 the Australian Government released the June 2021 quarterly update of Australia’s National Greenhouse Gas Inventory.

Australia’s greenhouse gas emissions fell by 2.1 per cent in the year to June 2021, and have fallen by 20.4 per cent since 2005

Boyle says he sees the awareness of carbon emissions driving the trenchless community to look deeply into its supply chain to innovate and come up with new techniques and products to drive zero emissions further into the future.

“I see the specification of low emitting trenchless technology by asset owners and government organisations to be the standard across Australia and New Zealand,” he says. “I believe this will be backed up by legislation and the trenchless community will be well placed to help deliver on a low carbon future.”

With the trenchless community already doing its part to reduce emissions, Boyle says the rehabilitation process for overall asset installation can be measured, quantified, and improved into the future.

This is where the Carbon Calculator could demonstrate how the use of trenchless technology can reduce project carbon emissions.

“This is great evidence for asset owner members, contractor members and supplier members. It could also be used to see what part of the process emits more carbon, allowing innovation to occur to effect overall emission reduction,” Boyle says.

The ASTT says its Carbon Calculator is not to be relied on to make commercial decisions nor is it a tool that will accurately define Capital Carbon Baselines, noting that there is no specific, quantified carbon goal that the calculator aims to reach.

Rather, the tool will be used to promote best practices across the industry.

The three steps the calculator aims to take is:

1. Reduction – reduce the carbon impact of infrastructure.

2. Behaviours – improve the behaviours of designers, constructors, and entire supply chains to reduce infrastructure carbon.

3. Union – create a common way of working to calculate carbon reductions across the industry, setting the narrative.

Boyle says with the ASTT’s overall goal being to advance the science and practice of trenchless technology for the public benefit and to promote education, training, study and research and practice for the public benefit, it is hoped the calculator will be used on individual projects and tested across various areas, with the onus on contractors and client organisations to use the tool and consider their own impacts.

“With this as our goal, we will support all measures that our members are taking to reduce emissions and promote to educate the greater community into the advancements and benefits of trenchless technology,” he says.

artificial intelligence

AI in the water sector: Safer, faster, better

Engineering graduates and other specialists are often employed to sit in front of video screens for weeks on end to watch footage from drone-mounted cameras being driven through pipes. The purpose? To assess where pipe maintenance needs to be carried out.

But no engineer wants to spend their days in front of a screen watching videos of the inside of a pipe. Fortunately, technology offers a smart solution for this.

What a difference data makes

Technology fuelled by artificial intelligence (AI) is driving change in the water sector. Once considered a threat to people’s jobs, such technology is now helping people do more of what they want to do, while meeting increasingly high expectations.

For example, councils and water authorities have extensive kilometres of underground pipelines for wastewater, stormwater and water.

“Many of these pipes are approaching the end of their life and they need to be renewed,” says John Phillips, Business Development Manager at Interflow, a leader in pipeline infrastructure. “Digging them up to replace them all would be extremely expensive and would disrupt communities.”

How, then, does a water manager assess where the work needs to be done?

Previously it has been undertaken by sending a camera through the pipes and relying on an operator to conduct an accurate analysis.

“By the time they engage a contractor to do the upgrade work, often the footage is very old,” Phillips says. “Things could be completely different by the time we go to do the job.”

That’s where a neat, AI-based solution comes to the fore.

The future of water management is here

A faster, more accurate solution is now being utilised by leading councils and authorities. It’s one that removes repetitive and low-value work and liberates engineers and others to do the higher-value tasks that keep communities’ infrastructure running smoothly.

“The analysis of the condition of the pipes can all be done by machine,” says John Weaver, Contracts Manager at Interflow.

Instead of camera footage being analysed by humans, it is analysed by an AI engine that has been trained on tens of thousands of hours of similar footage.

“It categorises every individual issue found and provides an immediate, real-time report of the entire pipe network,” Weaver says.

“A recommended capital works program, complete with anticipated costs, comes with the analysis. This means the council or water authority can work that program into their budget over the next four or five years.”

The transformative effect of AI is making condition assessment reports and asset maps faster, more objective and more consistent. Wherever such technology is introduced it removes often mundane and repetitive work and frees engineers and other staff to perform higher-value tasks.

And in the current environment in which the war for talent has become very real, anything that can be done to make work more engaging and relevant is welcome.

For more information visit Interflow

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Belaringar Creek Syphon Pipe Replacement

Issued by: Public Works Advisory

Closing Date: 19/05/2022

Location: New South Wales

Description: The Albert Priest Channel which supplies raw water from Warren to Nyngan consists of a DN900 reinforced concrete (RC) pipeline across the Belaringar Creek. This existing pipeline (hereinafter called “syphon”) has deteriorated and needs replacement. The designed capacity of the syphon is 60 ML/d.

Under this contract, a new syphon pipeline across and under the Belaringar creek shall be constructed together with associated structures such as headwalls as stated in this tender document. The new syphon shall be installed parallel to the existing syphon and connected to the existing open channel section on both ends

Provision of stormwater pipe relining & associated works

Issued by: Hume City Council

Closing Date: 12/05/2022

Location: Victoria

Description: Provision of stormwater pipe relining & associated works

Harrier Parade Sewer Pump Station 3C Upgrade

Issued by: Tamworth Regional Council

Closing Date: 12/05/2022

Location: New South Wales

Description: Council is seeking a suitably qualified contractor for the construction of the upgrade of Harrier Parade Sewer Pump Station (SPS). Due to increased network flows and the need for additional emergency storage, the Harrier Parade Sewer Pump Station 3C is to be upgraded to pump an ultimate loading of 70.8 L/s with two pumps in a duty/standby arrangement. This will be via a new SPS constructed adjacent to the existing SPS.

Umbakumba – Bore Rising Main and Associated Infrastructure Diversion and Sewer Pump Station Upgrade and New Sewer Rising Main

Issued by: Power and Water Corporation

Closing Date: 25/05/2022

Location: Northern Territory

Description: Umbakumba is a remote aboriginal community located east of Angurugu near Little Lagoon and Port Langdon on the north east coast of Groote Eylandt. Umbakumba has a population of 549 people. A new subdivision is planned to the south west of the community. The location of the new subdivision has resulted in the diversion of the bore rising main and associated infrastructure.

The bore rising main and associated infrastructure diversion is a priority and must not be delayed due to any sewer SPS and sewer rising main works.

The existing sewage pump station (SPS) #1 was built in 1981. It was identified in the Strategic Indigenous Housing and Infrastructure program (SIHIP) that the SPS and rising main was undersized resulting in the SPS upgrade and new sewer rising main works.

Spark – North East Link Project – CCTV (Stormwater Drains and Sewer)

Issued by: Capella Capital Pty Limited

Closing Date: 26/05/2022

Location: Victoria

Description: Express interest for the CCTV (Stormwater drains & Sewer) opportunity.

Water Mains Upgrade (Stage 3)

Issued by: Cook Shire Council

Closing Date: 18/05/2022

Location: Queensland

Description: Cook Shire Council invites tenders from suitably qualified tenderers for construction of the Cooktown Water Mains replacement and all supporting infrastructure as described in more detail in the document.

Email for more information.  

For more tender information visit the Australian Tenders website

Wilmot Pipelining commits to customer service

With these large-scale projects, including the successful delivery of the largest UV cured-in-place (CIP) liners ever installed in Australia at the end of 2021, Wilmot has continued to focus on safety and customer service

The management team at Wilmot strongly believes that customer service and safety comes hand-in-hand.

Wilmot Human Resources (HR) Manager was recently quoted saying, “if our trucks are clean and tiddy and safe, and with our staff well trained, the chances are increased that a tidy job site will lead to customer satisfaction due to quality workmanship and service”.

Managing Director Andrew Wilmot says this quote from the HR department started an important discussion around how Wilmot Pipelining has had so much praise recently around the company’s great service and excellent communication with both the public and the asset owner.

He says the customer satisfaction experience is based on open and honest lines of communication with the client and key personnel delivering on the field. It is also based on well-maintained plant and vehicles and management systems.

Wilmot Pipelining is accredited under International Organisation for Standardisation (ISO), 9001- Quality Management systems, 14001- Environmental Management systems and 45001 Occupational Health and Safety Management systems.

“With the commitment to quality products and customer service combined with our ISO accreditations for our management systems and service is of the highest quality in the industry,” Wilmot says.

“However, this is not a done deal. We will always continue to improve our processes and management systems in order to deliver quality products and services while keeping everyone involved safe.”

For more information visit Wilmot Pipelining

Thinking outside the box

David Dodemaide is the general manager of Rangedale’s Rehabilitation and Renewals (RRR) division, which specialises in trenchless rehabilitation and renewals. This arm of Rangedale has been operational since February last year, but Dodemaide has a full history in rehabilitation, having worked for 25 years with experts in rehab KA-TE, Inliner, Interflow, Comdain and Insituform.

Rangedale Group Managing Director  Neil Kermeen brought Dodemaide onboard to get the arm of the business going, and since then, the division has delivered a number of projects for local councils, other tier one/two organisations and water authorities.

The most well-equipped drainage and civil services company in Victoria, RRR’s most recent innovative contribution to the industry has been a method for relining boxed culverts.

Traditionally, most pipeline relining projects across Australia have been for circular or ovoid cross sections. Boxed culverts have been relined in the past, adopting slip lining methods whereby a liner is made-to-measure in the factory smaller than the existing culvert.

The liner is then pushed or pulled through the existing structure, leaving a gap between new and old that is filled with grout. This smaller cross-section usually results in diminished hydraulic capacities after relining. Costs and construction times also increase due to the large volumes of grout required to fill the gap between old and new.

Case study 

In February of this year, Rangedale Rehabilitation and Renewals was awarded a project by BMD Constructions, contracted by Major Road Projects Victoria.

The contract was to design and construct the relining of two boxed culverts.

RRR has previously been involved in joint projects with BMD, and had developed  a strong working relationship with BMD. As a result the company was approached to carry out the relining of two boxed culverts.

At 450 mm wide and 300 mm high, the two boxed culverts were requiring urgent repair works.  The solution needed to be cost effective, meet the tight project timelines, ensured a 100-year design life, and to not alter the hydraulic capacity of the newly installed drain.

Rangedale offered a unique solution to BMD and the asset owner. A German-manufactured Saertex circular UV-cured, cured-in-place pipe (CIPP) liner is inflated to the highest pressure and formed to the rectangular shape of the culvert.

The Saertex CIPP liner is designed in accordance with 100-year long-term properties and is deemed the best in its class with an extremely high stiffness modulus.

The liner assumes the shape of the culvert. Small gaps left in the corners are filled with a highly flowable grout to further support the liner. The grout has no bearing on the structural integrity of the liner – it only adds additional support to the liner in the corners.

Furthermore, the GRP liner surface is almost frictionless, providing the client with an increased hydraulic capacity after relining.

The result exceeded expectations, and the company said it plans to use the technology on future projects.


RRR delivered another complex and critical project in January this year for Programmed Facility Management (PFM) and principal water authority Greater Western Water (GWW).

RRR was contracted to reline 14 sewer access chambers, each varying in condition, with hindered access to the structures where GWW customers were depositing trade waste into the sewer system.

There were three major challenges that faced the RRR team on the project. The first was that the area was a designated ‘no-go zone’. Working downstream of the industrial waste discharge points, the team faced high flows of hazardous effluent that required a diversion of sewer inflow and thorough risk management.

The second challenge was that each access chamber manhole was severely degraded. Decades of highly corrosive effluent passing through the system had corroded the concrete, causing significant damage.

Thirdly, the high-risk profile of the project meant PFM and GWW needed a contractor who could minimise entry to the fully deteriorated structure.

Traditionally, access chamber rehabilitation solutions rely on the integrity of the existing structure in order for a protective coating to be applied and bond to the remaining surface of the access chamber. Other systems require extensive operator entry to install the liner such as slip lining and other hand applied structural liners. Rangedale offered a structural lining system that did not rely on the integrity of the manhole and was installed with a method that minimised operator entry.

Rangedale installed the Vertiliner system which is a UV cured-in-place pipe (CIPP) liner, manufactured to the exact fit of each access chamber. The liner was installed from surface level without entering the access chamber, then inflated with air pressure and rapidly cured using ultraviolet (UV) light mounted inside the inflated liner.

The end product was a structural glass reinforced plastic (GRP) pipe liner, installed as a structural liner independent of the original access chamber. Using unique UV cured CIPP technology, Rangedale installed 14 structural liners within a three-week period from surface level. The RRR Team are the only Australian land-based contractor to have undergone the extensive training and R&D requirements needed in order to install these liners.

This state-of-the art technology is new to the Australian rehabilitation and renewals sector and represents industry leading best practice.

For more information visit Rangedale

Providing cost-effective repair solutions

Aussie Trenchless’s SRP EXP Spiral Lining System is designed to rehabilitate pipes from DN150 to DN1200 using a selection of six different sized profiles.

The SRP EXP sizes range from a profile type E7-050-5 for DN150 to DN250 pipes, E9-085-6 for DN300 to DN450 pipes, E14-085-6 for DN375 to DN600 pipes, E20-085-6 for DN600 to DN900 pipes.

Wastewater and sewer pipeline networks are under stress, as time goes by, underground pipeline networks continue to age and breakdown, with repairs using traditional civil open cut methods being far too costly and disruptive on communities.

Aussie Trenchless director Chris Meredith says trenchless rehabilitation techniques continue to grow in volume as they are a cost-effective repair solution.

“The SRP EXP Spiral Lining System can be installed under flow conditions, with no by-pass pumping needed it is quick and efficient using a third-generation high quality profile to ensure ease of installation, providing a value-added outcome for the network owners,” he says.

The SRP EXP Winding Unit and Cages are a standard design. Each winding unit supplied is the same, the cages vary in diameter to suit the underground pipe size and all parts that make up the cages are standard and interchangeable on some cage sizes.

If a client requires a special diameter cage outside of the SRP EXP product range, Meredith says the company can design and supply it.

“I am looking forward to No-Dig Down Under in June this year where we will be displaying our equipment and technologies for the first time in two years following the pandemic,” he says.

“It will be good to see a wide range of trenchless products and services on offer. From construction tools like drilling and micro tunnelling rigs, to location and mapping services, with many and varied lining systems and products.

“In general, all agree that the trenchless industry is in good shape. The industry has solutions for most underground issues to ensure the above ground footprint and disruption is minimised during a trenchless installation.”    

Spiral lining is now available to all trenchless rehabilitation contractors in Australia and overseas through Aussie Trenchless.

Meredith says it is no longer benefiting the special few, with the spiral lining market now continuing to increase due to its availability, versatility, and competitiveness.

It can be installed under flow conditions, used in a wide range of pipe sizes, it has expanding tight fitting profiles and fixed diameter profiles with a grouted annulus gap.

“Spiral Lining profiles will continue to advance, with improved installation techniques and site application as a wide range of contractors become involved in spiral installations,” he says.

For more information visit Aussie Trenchless

Smart Lock

Case study: Smart Lock restores badly damaged GWM Water network

Located in regional Victoria, local utility GWM Water discovered that one of the network drains had been badly damaged by an external source. The drain had a diameter of 375 mm, and damage was only the top third of the pipe.

The repair proposal offered up several different options with varying cost and different degrees of difficulty accompanying each.

It was important to work through the different scenarios with the client and look at what was going to deliver the best value for money, cause the least disruption, and generate the greatest long-term outcome.

There was the option of setting up a bypass line over a train line, which instinctively brings with it a complete set of complications that must be worked through, as well as the planning process and time restraints.

By using this methodology, there were options to restore the line by either cutting it out and replacing it in its entirety or installing a new top section of host pipe and then patching the area using a bladder in the network.

The second option of patching also brought its own challenges around formation of the patch, managing the host pipe repair under inflation, and the team would still have the bypass line to work through.

The suggestion was made to rebuild the line using Smart Lock. This was something the utility had not seen or used before on its network. Smart Locks can be installed to rebuild the line under flow, in this case removing the requirement of bypassing and managing the bypass across a train line.

Once GWM Water saw the way that Smart Lock works, the client realised this was the best option on this desperately needed repair. GWM Water was impressed by how the stainless-steel banded together with the silicate impregnated fibreglass to restore the pipe’s shape and build structural integrity back into the line.

Work commenced and the damaged pipe was rebuilt using 5 Smart Locks, each locking into the previous one by managing the pressure used to blow out the packer. Once all the Smart Locks were joined together under live flow, CCTV footage of the drainage system was taken, and the outcome was demonstrated to be successful. The section of the pipe was covered in concrete to alleviate the same mistake happening again.

The finished product came up extremely well with little interference to the network and definitely a great saving to the client.

How it works

The Smart Lock is an innovative solution that is quick and easy, completed in three simple stages: load, lock and leave. By wrapping the stainless-steel sleeve with fibreglass and silicate resin and sending the packer down the pipe and into position, the Smart Lock solution is loaded before being locked into place by the innovative ratchet system to complete the repair.

With an average installation time of only 20 minutes, the installation team can leave to get to the next job as the resin impregnated fibreglass matting is left to cure behind the stainless-steel sleeve.

Smart Lock is ideal for localised defects such as cracks and holes, root infestation, water infiltration, displaced joints and redundant lateral connections. All can be repaired by installing a Smart Lock directly at the location. The solution provides a cost-effective alternative to excavation, relining or pipe replacement and is a permanent and structural repair.