Adept Civil Group kicks off 2021 projects

Sharing the images in a social media post, Adept Civil Group said its recent Victorian project is a great example of the company’s capabilities.

The project involved the installation of a 2.1 m diameter, 5 m deep Melbourne Water outfall drain for Adept’s client Brown Property Group in conjunction with Melbourne Water.

Image courtesy of Adept Civil Group.

Based in Victoria, Adept Civil Group comprises a team of more than 40 engineers, project managers, supervisors, machine operators and labourers who expect to see more growth throughout 2021.

For more information visit the Adept Civil Group website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

March Cato completes NZ cut-in

The new spool was cut-in to the existing 1,254 mm Waikato No.1 over the Christmas holidays, March Cato said in a social media post.

The work was undertaken as part of the Waikato 50 project in Tuakau, near Auckland, where March Cato is assisting with a new water treatment plant that will support Auckland’s drinking water requirements.

Image courtesy of March Cato.

“It was fantastic to work alongside some great engineers and leaders at Fletcher/BPC, BECA and of course Watercare,” the company said.

“This critical piece of works demonstrates the amazing things we can achieve through careful, thorough and detailed planning.”

March Cato said it looks forward to returning to site in 2021 help backfill the hole made late last year.

For more information visit the March Cato website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Brisbane pipe receives $4m facelift

Works are nearing completion on the relining of a 2.2 km section of the pipeline under Ann St from Newstead to Fortitude Valley.

Urban Utilities Spokesperson Michelle Cull said the 130-year-old pipe was a key player in Brisbane’s water network, pumping water to homes and businesses in and around the CBD.

“Every day the city and surrounding inner suburbs use about 25 ML of water – that’s the equivalent of around 10 Olympic-sized swimming pools,” she said.

“This project will extend the operational life of the pipe by at least 50 years.”

The original pipe will be relined using the Primus Line to minimise disruption to traffic and the community by inserting a liner into the existing pipe, negating the need to dig up large sections of the road.

Works are expected to be finalised in February.

For more information visit the Urban Utilities website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Sydney Metro Western Sydney Airport – Advanced and Enabling Works (AEW)
Issued by: Sydney Metro (NSW Government)
Closing date: 22 January 2021
Location: New South Wales
Description: Sydney Metro advises that an upcoming invitation for registrations of interest associated with the installation and commissioning of construction power, construction water and stormwater diversions for the Sydney Metro Western Sydney Airport project is scheduled to be advertised on or around 22 January 2021. It is expected the works will include construction water supply and stormwater diversion.

Cross River Rail – Tunnel and Stations – Directional Drilling Contractors
Issued by:
Cross River Rail Delivery Authority
Closing date:
31 March 2021
Location:
Queensland
Description
: Expression of interest is sought from directional drilling contractors for utilities relocation packages, under boring works for various potential packages of work.

Nyngan Water Supply-Off River Storage 1B
Issued by:
Public Works Advisory (NSW Government)
Closing date:
19 January 2021
Location:
New South Wales
Description
: The works under this contract consists of supply of all materials, plant, equipment and labour and construction of an in-ground storage including spillway and drainage, road access, and pipework.

McAlister Street Watermain Renewal
Issued by: Whakatane District Council
Closing date: 29 January 2021
Location: New Zealand
Description: Tenders are invited from suitably qualified contractors for the works as described in the document. Below is the summary of the scope for this contract:

  • Supply and installation of approximately 630m of DN280 PE100 SDR11 pipework.
  • Supply and installation of approximately 70m of DN200 Ductile Iron PN20 (or SS316 SCH10) pipework.
  • Supply and installation of approximately 210m of DN180 PE100 SDR11 pipework.
  • Supply and installation of approximately 230m of DN125 PE100 SDR11 pipework.
  • Supply and installation of short lengths of DN63 PE100 SDR11 pipework.
  • Construction of pipework connections (tee’s, bends, valves, hydrants, thrust blocks).
  • Construction of approximately 50 property connections.
  • Pressure testing, flushing, chlorination, and commissioning of works.
  • Decommissioning of existing valves, hydrants, and property connections.

Construction and Rehabilitation of Transport and Drainage Infrastructure
Issued by:
Brisbane City Council
Closing date:
3 March 2021
Location:
Queensland
Description: Council is seeking proposals for the establishment of a corporate procurement arrangement for the construction and rehabilitation of transport and drainage infrastructure.

Buchan Water Treatment Plant Raw Water Storage
Issued by:
East Gippsland Water
Closing date:
12 February 2021
Location:
Victoria
Description:
This tender is for the supply and installation of a new raw water storage tank including a new raw water pump station at the Buchan Water Treatment Plant. Tender documentation will be available for collection by arrangement from East Gippsland Water’s office at 133 Macleod Street, Bairnsdale (telephone 1300 720 700), on USB memory stick ($12.00 fee applies per tender document) or hard copy ($35.00 fee applies per tender document). This project is being funded as part of the Victorian Government’s $2.7 billion Building Works stimulus package.

Herdsman Main Drain to Perry Lakes Drainage Diversion Project (Design and Construction)
Issued by:
Town of Cambridge
Closing date:
27 January 2021
Location:
Western Australia
Description:
The town is seeking a suitably qualified and experienced Contractor to undertake the design and construction of the Herdsman Main Drain to Perry Lakes Drainage Diversion Project as stated in RFT 2021-02.

Each fortnight, the Trenchless Australasia e-newsletter includes a list of tenders relevant to no-dig contractors, suppliers and manufacturers.

The information is provided by Australian Tenders, which is renowned for being an Australia-wide locally owned and operated tender notification service.

Australian Tenders is also offering readers of Trenchless Australasia three months free on their subscription plans.

Email support@australiantenders.com.au for more information.

For more tender information visit the Australian Tenders website.

If you have a tender you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

L&D completes biggest project to date

Located 75 km from Melbourne, the HMAS Cerberus site occupies more than 15 km2 near Crib Point on Hanns Inlet, Western Port Bay in Victoria, with approximately 980 uniformed, defence, civilian and contracted staff working at the base. 

There are also approximately 6,000 training places per year across 300 courses, which range in duration from one week to 12 months – resulting in an average of 1,100 trainees at any one time throughout the year. 

Work on the new sewer mains commenced in December 2018 and job planning with Land Engineering and other contractors onsite became vital due to the purer size of the construction site. Tunnelling works were spread out over a 15-month period and the operation’s last drill shot was completed in March 2020.

Project specifications

This project consisted of approximately 30 tunnel boring machine (TBM) setups and 20 launch shafts ranging from 1.5-9 m deep. The total distance of drilling accumulated over the 15 months was 1.6 km. 

Various pipe sizes were installed, including 150 mm, 225 mm and 300 mm Iplex restrain pipe, while there was also one 50 m drive that involved pipe jacking 427 mm of Hobas GRP pipe. L&D Microtunnelling says the drill provided an opportunity to design and construct a new drill head to not only suit the pipe used but the ground conditions as well. 

“We encountered mostly friendly ground conditions throughout the project. Most drives were through sandy clay, but in some areas, it was a lot more challenging as we faced high plasticity clays and unstable sandy clays,” says the company. 

“Groundwater was also a challenge in most of the deeper shafts as we were drilling very close to and even in a few circumstances under the water table.” 

The company says it was very proud of its crew’s efforts to successfully complete its biggest project to date. 

Built on experience

L&D Micro Tunnelling was established in 2015 by lifelong friends, Luke Lewis and Christopher Dean, who first began working together in 2011 as a site foreman and microtunnelling operation supervisor respectively. Mr Lewis is a qualified plumber and drainer while Mr Dean is a qualified fitter and machinist, bringing their total combined experience in the sewer and water industry to 20 years. 

Both men understand the need for precision, pride themselves on building client relationships and thrive to always deliver an economic, reliable service to companies across Australia. Over the past five years, L&D Micro Tunnelling has completed 50 projects and drilled more than 11 km – with many more projects and kilometres to come.

This article was featured in the December 2020 edition of Trenchless Australasia

For more information visit the L&D Microtunnelling website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

McConnell Dowell sets world record

McConnell Dowell completed the drive on Watercare’s Snells Algies wastewater pipe and outfall project with the MTBM setting a record of 2021 m, surpassing the previous mark set in New Zealand by record 92 m.

The Herrenknecht machine bored through challenging geology and a curved alignment to complete its work during the COVID-19 lockdown after being deemed an “essential” project.

McConnell Dowell Project Manager Brent Whiting says the record achievement demonstrates the depth and skill of experience in the company’s tunnelling teams and its dedication to working through challenges.

After its breakthrough, the MTBM was driven into a trench off the coast of Martins Bay where it will be separated, lifted and transported to a local harbour.

The project is the first phase of Watercare’s three-stage scheme to supply the surrounding communities with reliable wastewater services.

For more information visit the McConnell Dowell website.

This article was originally published on 5 August 2020.

If you have news you would like featured in Trenchless Australasia Assistant Editor Sophie Venz at svenz@gs-press.com.au

Executive appointment at YVW

Ms White has been acting in the role since June 2020 and YVW Managing Director Pat McCafferty said the recruitment process had been rigorous.

“I’m delighted to announce the appointment of Tiffany White to our strong and highly skilled executive team,” he said.

“She is an accomplished and respected leader, as demonstrated in her roles at Yarra Valley Water and previous senior management positions.

“Tiffany’s skills in collaborating with others to drive creative, innovative and customer-centric solutions will help us to deliver on our purpose – to support the health and wellbeing of our customers and create a brighter future for communities and the natural environment.”

Ms White has previously occupied senior leadership roles in local government, higher education and the health and water sectors.

Based in Melbourne’s east, YVW services 1.9 million people through its network of approximately 20,000 km of water and sewer mains. 

For more information visit the YVW website.

If you have company news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Quality guaranteed with ISC

These products increase the return on assets and the longevity of sewer maintenance holes, pump stations, pits and pipes.

Closing in on 20 years of operation, ISC offers high quality, well established and proven products and systems that provide its clients with a safe and cost-effective means to construct or repair a range of water assets.

The company has worked with councils and water authorities all across Australia, delivering inflow and infiltration studies, conducting inspections at hundreds of maintenance holes, pump stations and sewage treatment plant inlet structures as well as helping customers minimise asset degradation and reduce operational and whole-of-life asset costs.

Products on offer include the Flex Seal Utility Sealant for sealing leaking riser rings and joint sections in a manhole, the Cretex Pro-Ring™ manhole grade adjustment system and the EncapsulAC® Coagula-Tracer Fluid designed for fully encapsulating asbestos fragments and fibres during the relining of asbestos cement pipes in conjunction with trenchless technologies.

ISC also provides high quality mechanical seals, patch and repair products, corrosion resistant coatings, polyurethane grout and various other products to make up its comprehensive suite of solutions.

All systems provided by ISC Services are from leading US manufacturers with independent testing and long-term case studies available, and the company is committed to providing quality and continuous customer service to accompany all its offerings.

For more information visit the ISC Services website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Interflow secures SA Water package

Sharing the news on social media, Interflow said its SA team will enjoy completing works for its own local community.

“After 18 months of travelling Australia, performing a variety of different and challenging projects from the top of the Northern Territory to the bottom of Tasmania, our SA team can rest easy knowing that they’ve just secured four years of local work,” the company said.

“Prioritising economic efficiency, environmental performance and social responsibility, SA Water has a long and proud history of delivering exceptional water and wastewater services to state residents.

“Working collaboratively with our customer, we will help SA Water to meet its goals whilst prioritising the wellbeing of residents.”

Interflow said it will continue to share updates from the field as the program progresses.

For more information visit the Interflow website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Lonsdale Street Sewer Upgrade complete

The Lonsdale Street Sewer Upgrade is the second stage of City West Water’s (CWW) four-stage $80 million program to expand Melbourne CBD’s sewer system capacity, with the new pipe linking to a new sewer under Spencer Street that was installed as part of stage one in December 2018.

Contractor Rob Carr installed the new 1.5 m diameter sewer pipe under Lonsdale Street using a 6.3 m, 16.3 t microtunnel boring machine (MTBM), which worked at depths ranging between 10 and 23 m.

The MTBM had tunnelled 24 hours a day from March to September this year and encountered a variety of hard and soft ground conditions throughout.

To support tunnelling activity, a 23 m deep launch shaft was excavated at William Street as well as two 10 m deep retrieval shafts at Elizabeth Street and Spencer Street.

Each of the three shafts have now been filled in, closed and replaced with manholes.  

CWW Managing Director Maree Lang said the new pipe formed part of the biggest upgrade to Melbourne CBD’s sewer network in more than 120 years.

“With the existing sewer over 120 years old, the new sewer pipe will help cater for the growing demands of the Melbourne CBD now and into the future,” she said.   

“We sincerely thank the thousands of city residents, workers and commuters who adapted to the changed conditions while we carried out construction along Lonsdale Street.

“Your patience and understanding allowed us to provide this vital piece of infrastructure for Melbourne’s CBD.” 

The next phase of works will include a new sewer along Elizbeth Street, with construction expected to begin in mid-2021.

For more information visit the CWW website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

WATCH: Interflow and Coliban Water unite

Interflow shared a video on social media of the project and said it is thrilled to be working with Coliban Water on the project.

Interflow said its front-line workers were recently onsite, sharing their insights into the importance of creating an efficient wastewater asset management plan.

With works already underway, Interflow said a “key stand-out about this project was how we adapted our processes to safely continue works throughout the COVID-19 period – a truly innovative approach during a critical time”.

For more information visit the Interflow website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

View the latest trenchless technology tenders

View the latest trenchless technology tenders

Construction of the clean water drainage system
Issued by:
Kimbriki Environmental Enterprises Pty Ltd
Closing date:
8 December 2020
Location:
New South Wales
Description
: Kimbriki Environmental Enterprises Pty Ltd proposes to construct a Clean Water Diversion System (CWDS) at the Kimbriki Resource Recovery Centre, which is located off Kimbriki Road, Ingleside in northern Sydney. The proposed CWDS will divert stormwater runoff from approximately 70 hectares of up gradient land, including 24 hectares of land to the north and west of Mona Vale Road. The CWDS will comprise a system of stormwater diversion drains and pipes constructed around the perimeter of the KRRC facility, uphill of the active KRRC areas.

Provision of services for water main renewals
Issued by:
Coliban Region Water Corporation
Closing date:
8 December 2020
Location:
Victoria
Description
: Coliban Water invites tender submissions for the provision of service water main renewals throughout the region in central and northern Victoria. The principal has identified a need to undertake a comprehensive water main renewal program as part of its ongoing maintenance program for management of the water supply system.

Sedgebrook Street water supply upgrade
Issued by:
Whanganui District Council
Closing date:
10 December 2020
Location:
New Zealand
Description
: Whanganui District Council are inviting tenders from suitably experienced contractors for replacing the existing water-main from 26 Sedgebrook Street to Nile Street. The scope of work includes but is not restricted to installation of all related 125 mm OD diameter MDPE pipe replacement works (length 102 m) by using a directional boring and excavation method.

Catherine Avenue, Chelsea pipelining
Issued by:
Kingston City Council
Closing date:
10 December 2020
Location:
Victoria
Description: The scope of works in this contract includes the following:

  • Cleaning and preparing an existing 675 mm diameter and 825 mm diameter concrete stormwater drain for the purpose of lining
  • Installing approximately 61 m of a cured-in-place pipe (CIPP) structural liner to rehabilitate an existing 675 mm diameter concrete storm water drain
  • Installing approximately 130 m of a CIPP structural liner to rehabilitate an existing 825 mm diameter concrete storm water drain
  • Cutting out and reconnecting existing house drains and drainage system connections
  • Post construction CCTV inspection of the lined drain and connections

Busselton Water directional drilling services
Issued by: Busselton Water
Closing date: 11 December 2020
Location: Western Australia
Description: Busselton Water invites suitably qualified contractors for the provision of directional drilling services for a three year period.

Meringandan West Trunk Main
Issued by:
Toowoomba Regional Council
Closing date:
15 December 2020
Location:
Queensland
Description
: Tenders are invited for the lump sum contract for the design and construction of the Meringandan West Trunk Water Main.

Each fortnight, the Trenchless Australasia e-newsletter includes a list of tenders relevant to no-dig contractors, suppliers and manufacturers.

The information is provided by Australian Tenders, which is renowned for being an Australia-wide locally owned and operated tender notification service.

Australian Tenders is also offering readers of Trenchless Australasia an extra three months on their subscription plans.

Email support@australiantenders.com.au for more information.

For more tender information visit the Australian Tenders website.

If you have a tender you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

YVW completes sewer construction

The utility said the 2.3 km gravity sewer will help cater for population growth in the region and will service the developing area between Craigieburn and Epping, while also preventing sewage spills following storms.

YVW General Manager of Growth Futures Chris Brace said the project is part of many major YVW projects taking place in Melbourne’s northern growth corridor.

“The Epping Main Sewer, Lockerbie Main Sewer and Kalkallo Creek Main Sewer are major infrastructure investments that YVW are delivering to support the transformation of the outer north from paddocks to thriving communities,” said Mr Brace.

YVW’s construction partner John Holland built a 42 m deep tunnel using a tunnel boring machine that operated 24 hours a day to complete the sewer.

The ongoing tunnelling at significant depths presented a unique challenge for the project, and maintaining the pace of works while minimising noise disruption for residents was a key focus.

As such, YVW undertook background noise monitoring while John Holland carefully planned tunnelling activities each day to minimise the use of above-ground machinery at night.

Mr Brace said YVW is working hard to deliver the infrastructure Melbourne’s growing areas will rely on for years to come.

“This area will see a huge increase in the number of people who will soon live here, and we’re working hard to ensure that water and sewerage services can keep up with demand into the future,” he said.

For more information visit the YVW website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

SA Water installs new Murray Bridge water main

GVW speeds up leak detection

GVW currently accesses usage volumes per system via manual reads of traditional analogue meters, though it said the introduction of intelligent meters in several towns will provide a better understanding of customers’ water usage and will play a role in reducing water wastage.

The digital data will enable GVW to make informed decisions on repairs and capital works, as well as developing targeted education programs to encourage customers to reduce or restructure water use.

GVW said the project offers many benefits to customers and the community, including early leak detection.

“Analogue water meters are currently read manually every four months and a leak can take some time to be identified,” the company said.

“Real time data [from the intelligent meters] can highlight these anomalies and save both water and money for the customer.

“The data that will be accessible to us will be useful for planning, reporting and for understanding customer water use, and highly valuable in the work we do with the community and customers. 

“We look forward to sharing the learnings with customers as we progress on this journey.”

GVW said more information will be provided about the trial towns and the project plans as the intelligent metering project progresses.

For more information visit the GVW website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

New sewerage system underway

The company says its modern sewerage system will replace the odours and soggy patches that have been associated with the old, leaking septic tanks and sewage run-off into local waterways in the area.

YVW General Manager of Growth Futures Chris Brace said the new sewerage system would have several benefits for locals and the environment.

“The new system will make managing sewage easier for customers,” said Mr Brace.

“It’s also a win for the environment.

“Sewage run-off from broken or poorly-maintained septic tanks can pollute waterways which this new system will prevent.”

The sewer is being constructed in Baynes Park Reserve in four stages, with customers expected to connect by the end of 2022.

YVW says one all four stages are completed, the utility will have delivered approximately 25 km reticulated sewer network and 1.6 km of rising sewer.

To do so, YVW said it will use trenchless methods of drilling to minimise disruption to the environment and the community.

For more information visit the Yarra Valley Water website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

WATCH: OSDD pull pipe on the Gold Coast

OSDD Director and Lead Driller Adrian Brock released a video of the pipe pulling, comprising  60 m of DN 355 PN16 HDPE sewer rising main.

“We were contending with tidal changes and ground water due to the bores proximity to Currumbin Creek and difficulties associated with drilling in sand,” said Mr Brock.

“[We] were required to drill under a proposed DN 1500 stormwater at depths of 4.2 m and crossed under a live, asbestos DN 350 sewer rising main.”

OSDD specialises in horizontal directional drilling and underground boring services for the installation of conduits for water, gas, power and telecommunications.

The company is based on the Gold Coast and services the Queensland area.

For more information visit the OSDD website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

AUSJET21 opens call for papers

Taking place from 3-4 March 2021 at Melbourne Showgrounds, AUSJET21 has commenced building its conference program and is seeking interested speakers to submit papers and present on any new or existing technologies.

AUSJET21’s suggested topics include – but are not limited to – discussions regarding the future of industrial cleaning; tax incentives for research and development; water recycling technology and its benefits; vacuum safety through robotics; developing effective maintenance programs and how to ensure operations are compliant with regulations.

The live event experience will give companies the opportunity to take part in outdoor demonstrations, conferences, purchase new equipment and educate themselves on best practice standards, all while connecting with industry peers.

AUSJET21 is an independent event initiated and conducted by the Australasian High Pressure Water Jetting Association (AUSJET), which incorporates the Australasian Drain Cleaning and Vacuum Association (ADCVA).

For more information visit the AUSJET21 website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Rob Carr wins excellence award

Sharing the news on social media, Rob Carr congratulated its team, led by Barry Crowley and Paul Lee, which won the award in the $5-10 million project value category.

“The team recently delivered the very successful Dunsborough Infill Sewerage Project Sections 5C & 9A,” said Rob Carr.

The Dunsborough Infill Sewerage Project.

The project was part of Water Corporation’s Infill Sewerage Program and consisted of more than 5.2 km of gravity sewer constructed by microtunnelling and conventional techniques.

Rob Carr also completed 36 access chambers, 41 maintenance shafts, 215 property connections, 1.5 km of pressure main pipelines by horizontal directional drilling and two Type 40 pump stations.

The company said it completed all works while minimising impact to the local community, environment and conservation areas.

“Another example of Rob Carr delivering project excellence for its clients.”

For more information visit the Rob Carr website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

Specialised system locks in success

Rangedale was contracted to rectify the problem and employed the Smart Lock Group to develop a solution, namely a specialised Smart Lock that could permanently repair and seal the pipe.

The Smart Lock needed to measure 1,200 mm in diameter and be 400 mm wide to completely seal the joint. Normally, a Smart Lock made for a pipe diameter of this size would be 200 mm wide and consist of two pieces; however, with the high level of infiltration, the repair needed a one piece solution that would effectively seal and repair the open joint simultaneously.

Smart Lock Group has designed customised Smart Locks in the past for previous certified installers, clients and jobs when various or unique sizes have been required.

The large sheet of Grade 316 stainless steel had to be specially produced from the mill and sent to the engineering department for production. Once the custom-made solution design was finalised, the manufacturing process was completed in under three weeks.

All Smart Locks are made of three elements: the stainless steel sleeve and locking system that is compliant with ASTM A 240, ASTM A 666 and EN 1.4401; application specific proprietary silicate resin, specifically formulated for sewer system use as it adheres to moist surfaces and has a high resistance to aggressive water; and the E-CR fibreglass matting used to create a heavy duty two-way cloth.

The installation was a challenging job due to the size of the pipe and the size and weight of the equipment required for the install. After extensive project planning by the Rangedale team to ensure the safety of all crew members and equipment, an installation plan was finalised for the 7 m deep shaft.

Specialised lifting equipment was required to hoist the large packer used to expand the Smart Lock in and out of the 7 m shaft, with both the Smart Lock and packer required to be manually placed into position at the repair point.

Due to the high level of infiltration, two layers of fibreglass were used around the Smart Lock to create a permanent seal of the joint, combined with the stainless steel sleeve to create a structural repair and leave a completely clean and smooth internal bore for the pipe.

The installation process took only three hours to complete.

Three-step process

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 30 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, which 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.

Additionally, aggressive cleaning, root cutting and relining can be undertaken in future without the concern of damaging the Smart Lock.

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

For more information visit the Smart Lock website.

If you have news you would like featured in Trenchless Australasia contact Journalist Sophie Venz at svenz@gs-press.com.au

WATCH: Time lapse of Redhills Wastewater Project

The project’s objective was to deliver a new wastewater scheme to service the Redhills Special Housing Area (SHA) and included a branch sewer, 141 L/s pump station with underground storage tanks, 900 m long 355 OD HDPE rising main, 3,200 m of gravity sewer and a connection to the existing Massey North pump station on Northside Drive.

 

Pipeline and Civil offer specialist engineering services across a wide range of sectors, with an expertise in water infrastructure, civil engineering and large diameter pipelines.

For more information visit the Pipeline and Civil website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au

TBM planned for major upgrade

The Hobsons Bay Main Sewer, originally built in the 1960s, is responsible for carrying more than 30 per cent of the city’s wastewater to the Western Treatment Plant.

Melbourne Water will undertake the essential upgrade to boost the sewer’s capacity and ensure the reliability of the city’s sewerage service for the next century.

Melbourne Water General Manager Major Project Delivery Eamonn Kelly said the 2.1 m diameter reinforced pipe that can handle flows of up to 7,700 L/second would be upgraded, while a new sewer main will ensure wastewater flows are diverted during the works.

“The duplicate sewer main will allow for this upgrade to be completed safely and efficiently,” said Mr Kelly.

“It will ensure the continued smooth operation of the sewer network which caters for Melbourne’s growing CBD and bayside suburbs.”

The project will see two shafts up to 30 m deep constructed on either side of the Yarra River and a TBM used to construct the new main.

“The project team is currently working on the design, taking into account the challenging ground conditions on either side of the Yarra River and the existing active sewerage system,” said Mr Kelly.

Melbourne Water has released an expression of interest for the project, from which a limited number of contractors will be invited to tender.

Works are anticipated to begin in 2021.

For more information visit the Melbourne Water website.

If you have news you would like featured in Trenchless Australasia contact Assistant Editor Sophie Venz at svenz@gs-press.com.au