TasWater has implemented new technology to identify and combat water loss in Tasmania.
Innovative liner to prevent sewer blockages
SA Water is conducting a trial in metropolitan Adelaide in an effort to combat sewer blockages caused by tree root intrusion.
Adept microtunnelling works on track
Adept specialises in the supply and installation of water and sewerage drainage pipelines around Victoria.
The company said it has dedicated months in planning to major water, sewer and drainage upgrades in Truganina in consultation with clients Becon Constructions, BP, Charter Keck Cramer and City West Water.
‘Our highly advanced microtunneling equipment and highly skilled team [were] the reason Adept were chosen to deliver this project,’ Adept said on social media.
The civil and water infrastructure specialist provides contracting services within the water and sewer industry and is the only company in Victoria delivering civil and microtunneling projects on a large scale.
Previous projects by the company have included the West Gate Tunnel sewer relocation, the construction of Plantation Road storage bypass tank, and the sewer relocation as part of the redevelopment of St Kevins College.
Truganina is located 22 km west of Melbourne’s CBD.
The upgrades will include the use of microtunneling techniques to construct a new large sewer and water mains 500 m from the new development in solid basalt rock.
For more information, visit the Adept Civil Group website.
Customised to suit all needs
Australian Custom Pipes is an independent, Australian-owned polyethylene pipe manufacturer with more than 20 years of experience in the market.
Watercare outlines NZ$18.5b plan
Earlier this month, the company released its Asset Management Plan (2021-2041) which outlines how Watercare will deliver new water sources and infrastructure, as well as renew and expand its wastewater network, to cater for Auckland’s expanding population.
The city is anticipated to have approximately 476,000 more residents over the coming 20 years and Watercare Chief Executive Jon Lamonte said it was important to continue to support the changes in a climate-resilient way.
“We have a colossal job to do to ensure we can continue to provide top quality drinking water to all of our customers and safely treat our region’s wastewater while adapting to the changing climate.
“While our population grows, industry does too,” he said.
“Auckland is already home to two-thirds of the country’s food and beverage manufacturers – two sectors for which water is vital – so ensuring we can support growth in these industries with a secure water supply is important for the wider economy.”
Mr Lamonte said the total investment averaged out to NZ$2.5 million ($2.37 million) per day, and there was no shortage of work to undertake.
“If consent is granted, we plan to progressively expand our new treatment plant near Tuakau until it can treat up to 150 million L a day.
“To put that volume in perspective, that’s more than what we can get from all five of our Waitākere dams,” he said.
“We’ll also need a new pipeline to carry this water to the city and increase our system’s resilience.”
Click here to read a copy of the plan.
For more information visit the Watercare website.
Pullback completed in NT
Spiecapag and subsidiary HDI Lucas have successfully completed the pullback at the APA Group Channel Island Bridge Pipeline replacement project.
McConnell Dowell gets creative on NZ storage pipeline
The complex project involves the construction of a new stormwater storage pipeline which will help provide a better life for people, birds and marine life in the region.
The St Marys Bay Area Water Quality Improvement project secured another win with the completion of the last tunnelling drive at the end of 2020.
Hinehōaka, the project’s microtunnel boring machine (MTBM), successfully completed more than 1 km of microtunnelling in less than six months.
The 1,120 m storage pipeline, which includes a marine outfall, was constructed in three separate tunnelling drives using pipe-jacking methods.
The new pipeline will reduce wastewater overflows to St Marys Bay and Masefield Beach by 95 per cent.
The high flows after rain events will be stored in the new larger capacity pipeline and pumped back into the sewer network for treatment when there is capacity.
As well as reducing overflows, once complete the new marine outfall will discharge to a location far away from places where people swim.
Two shafts were constructed in council parkland at the bottom of the cliff face to accommodate each tunnelling drive and a third shaft needed to be constructed in the narrow streets around St Marys Bay.
This shaft was carefully and cleverly designed to be able to retrieve the MTBM from a 3.8 m diameter shaft, 25 m below ground.
”We couldn’t have asked for a better result after the completion of our last tunnelling drive at the end of 2020,” said McConnell Dowell Senior Project Engineer Grant Maclean .
“We set a bold target of getting the drives finished and machine out of the ground before Christmas, so it was a great team effort to complete it in time.
“The team comprised of some really experienced members, as well as some new ones who were eager to learn.
“It was great seeing them help each other out and pass on some of that knowledge to the younger ones.
“The crew should be proud of what they achieved, especially finishing the job in a highly sensitive area, with almost no noticeable effect to stakeholders.”
Responding to challenges
Each tunnelling drive had its own unique challenges but one of the major challenges the project team faced was tunnelling very close to, and underneath, restored villas worth millions of dollars in one of Auckland’s oldest suburbs.
To mitigate stakeholder issues and concerns, the project set up a ‘SiteHive’ unit to collect data while the MTBM was operating.
The unit continuously collected noise, dust and vibration monitoring readings from the worksite and this data helped proactively manage consent compliance, as well as record the impact of the operations.
When noise reached predetermined levels a photo and sound recording were taken to capture the activity onsite.
This constant monitoring meant the team could ensure construction activity operated within the consent conditions and any exceedances were investigated to see what could be done differently to ensure compliance in the immediate future.
Another technical feat on this project has been the design, construction and sinking of the marine outfall pipe.
The outfall, constructed by McConnell Dowell’s New Zealand marine team, had been cleverly built to withstand the 12-hour pipe-tow journey from Kaiaua, Firth of Thames to Auckland.
What made this significant milestone a challenge was the on-water installation of the ballast blocks.
Although on-water installations have been done before, the Creative Construction™ difference on this project had been the design and construction of the custom-made frame attached to the side of the barge.
This meant there was less pipe bending during the installation, while ensuring sufficient space on the barge to store the 70 ballast blocks and the crane that was carrying out the operation.
Once the ballast blocks were installed, the 460 m HDPE pipe was floated around from its temporary mooring off Westhaven Marina to its final position adjacent to Masefield Beach.
Although the sinking of the pipe was an effortless seven-hour procedure, the accuracy of the sinking was mainly due to the measurements taken by site engineers two days prior.
Starting from 3am, the team started measured the pipe every hour for two days to see how it expanded and contracted in different temperatures and they noted the pipe dimensions that were recorded at the beginning of the day were different at the end of the day.
By using these calculations, they could give a close-to-perfect hypothesis of where the pipe would land at completion of the sinking.
As a result of these studies, there was only a slight discrepancy of 50 mm off the predicted landing.
According to McConnell Dowell Project Manager Matt Beswick, sinking the pipe and connecting it to the end of the newly built stormwater tunnel was quite a technical feat.
“It had been twelve months of meticulous preparation and design.
“Sinking the outfall pipe was very impressive and precise work requiring both large scale machinery and human involvement, and we’re very proud of everyone who worked on this project,” he said.
Health and wellbeing has also been a huge focus on this project, as all three tunnelling drives were carried out by the team working in shifts over a 24-hour, five days per week work period.
To educate the team around mental health, McConnell Dowell invited Mates in Construction, a program aimed at improving mental wellness and reducing suicide in the construction industry, to run sessions onsite with the crew.
The St Marys Bay Area Water Quality Improvement project is the first McConnell Dowell site and fourth site in New Zealand to be Mates in Construction accredited.
The scope of works includes:
•Building a new 1.2 km long, 1.8 m diameter stormwater storage pipeline and 500 m of additional wastewater pipeline connections from 900 to 1,050 mm internal diameter.
•Constructing three shafts at Pt Erin, St Marys Road Park and the corner of London and New Streets.
•Performing three tunnelling drives to connect the shafts (and manholes) and create a tunnel to the pump station and out to the outfall location in the Waitemata Harbour.
•Assembling a 468 m long 1,600 mm diameter high-density polyethylene (HDPE) marine outfall assembled in Kaiaua, Coromandel then towed 90 km to Auckland.
•Building a new pumping and screening station and odour control unit in the Pt Erin Park shaft.
Construction began in January 2020 and is scheduled for completion in mid-2021.
For more information visit the McConnell Dowell.
This article was featured in the June 2021 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.
View the latest trenchless technology tenders
Sewer Main Renewals Program 2021/22
Issued by: Grampians Wimmera Mallee Water Corporation
Closing Date: 27 July 2021
Location: Victoria
Description: Tenders are invited for the Sewer Main Renewals Program 2021/22. This Contract includes sewer main relining works located across GWMWater’s operational region, with the scope of works as follows: Relining of approximately 9,564 m of mains, ranging in size from 100 mm to 375 mm diameter.
Sydney Gateway, Stages 1 & 3 – underbore and HDD
Issued by: John Holland Pty Ltd & Seymour Whyte Construction Pty Ltd
Closing Date: 01 September 2021
Location: New South Wales
Description: Perform underbore and horizontal directional drilling (HDD) works including supply of conduits/sleeves.
PSA supply and delivery of under road boring services
Issued by: Livingstone Shire Council
Closing Date: 04 August 2021
Location: Queensland
Description: Livingstone Shire Council is seeking to source suitably qualified contractors to perform horizontal directional drilling services in urban and residential areas at various council sites throughout the Livingstone Shire who are qualified and capable of services as detailed in the specification for its Provide Preferred Supplier Arrangement (PSA) Supply and Delivery of Under Road Boring Services requirements.
San Remo Basin to Cowes 648 Pipeline Valve Renewal Project
Issued by: Westernport Water
Closing Date: 04 August 2021
Location: New South Wales
Description: Westernport Water is seeking tenders from suitably qualified and experienced contractors for the provision of replacing multiple valves and pipe segments along the 648 pipeline between San Remo Basin and Cowes according to the drawings.
Large diameter pipe structural sewer lining
Issued by: Hunter Water Corporation
Closing Date: 29 July 2021
Location: New South Wales
Description The work under this contract includes but is not limited to design, supply, installation, construction, and testing of structural lining systems for the full length between maintenance holes unless noted otherwise. All work is to be undertaken with as little disruption as possible to the operation of the principals sewer system and to its customers.
Drainage renewal and floodway construction works
Issued by: Isaac Regional Council
Closing Date: 23 July 2021
Location: Queensland
Description: Isaac Regional Council invites tenders for Drainage Renewal and Floodway Construction Works. The individual sites which are to be tendered:
- Dysart_Clermont_Road
- May_Downs_Carfax_Road
- Barmount_Road
- Wiatara_Road
- Palmerston Road
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.
Primus Line celebrates 20 years
Primus Line® is a versatile liner system for the transport of liquid and gaseous media.
WATCH: New Melbourne sewer pipeline on track
The Yarra Valley Water (YVW) project involves the construction of a 9 km sewer pipeline between Donnybrook and Beveridge in Melbourne’s north.
On completion, the pipeline will incorporate up to 14 branch sewer connection points to service future developments and collect and transfer wastewater from the existing Wallan Sewage Treatment Plant.
JAYDO reported this week that the microtunnel boring machine has just completed the fifth of six drives, marking another significant milestone for the project.
The pipeline is being constructed along the western side of the Melbourne-Sydney railway line north of Minton Street, then crossing the railway line and hugging the eastern side of the rail line to its southern end in Donnybrook.
Construction is on track for completion later this year with the new sewer pipeline to be in operation shortly after.
For more information visit the Bothar website.
TRACTO breaks harder ground with JLM Underground Solutions
The GRUNDODRILL 18ACS is no exception, with impressive capabilities to drill through all tough geological conditions, including firm rock formations.
Headquartered in Germany with a presence the world over, TRACTO-TECHNIK produces machines and accessories for the underground installation and renewal of pipelines with a focus on innovation and efficiency.
Among its wide range of products is the GRUNDODRILL 18ACS – a horizontal directional drilling (HDD) rock drilling rig suitable for any project, regardless of terrain.
The machine is capable of a stepless adjustment of torque and speed allowing for maximum power and productivity on the job and the best possible adaptation to all soil conditions.
Equipped with rods for every purpose, the GRUNDODRILL’s Elicon 95 twin-tube rods and the rock-breaker with roller bits or PDC are perfect for tough, specialised operations, while directional bores beneath roads, railway tracks and buildings are all standard applications for this machine.
The Elicon rods have an inner tube bedded inside the outer tube by means of wear elements, and the inner tubes are quickly and firmly connected using plug-and-twisted connectors.
This special design makes maximum fluid volumes possible even with long drilling bores.
When detection of the bore is especially demanding, the GRUNDODRILL applies cable-guided drilling, allowing the operator to achieve project success when drilling underneath water bodies or when interferences occur.
The machine uses two multi-function joysticks for all functions in drilling and driving mode, and different operating modes can be freely selected by the machine operator to suit any need.
In the field
JLM Underground Solutions is a civil contractor headquartered in Victoria specialising in rock drilling.
The company has been in the trade for more than a decade and has steadily progressed to working on major utility installation projects.
Earlier this year when searching for a new piece of equipment with the capability to satisfy the increasing demands of today’s infrastructure projects, JLM Director John Mundy was turned onto TRACTO-TECHNIK and the GRUNDODRILL 18ACS.
“I was looking for a very reliable drill with more power for the footprint and to open larger diameter holes, because that’s what these sites require now – clients are often looking for more conduits installed in a single hole ,” said Mr Mundy.
“I heard about the GRUNDODRILL through word of mouth from other drillers who use them. We needed something with a larger mud pump and power to suit and the GRUNDODRILL 18ACS fits that bill.”
A new purchase, Mr Mundy says his experience in the weeks since have been all positive.
“It’s been fantastic. The job that we’ve been using it on has contained some really hard mud stone and the GRUNDODRILL 18 ACS has been performing very well,” he said.
“It’s got a more powerful engine and the machines pullback power and rotational torque are very impressive.
“JLM is already very experienced in rock drilling, but this machine has allowed us to have the comfort of opening up a larger and longer hole than we previously had before.
“And TRACTO-TECHNIK Australia’s customer service has been excellent. The communication and the willingness to provide information and product advice has been second-to-none.”
With its first GRUNDODRILL now at work, Mr Mundy says this new equipment will continue to take JLM from strength to strength.
“I think the future for us is excellent and we hope to continue purchasing more, and larger, drills from TRACTO-TECHNIK as time goes on.”
For more information visit the TRACTO-TECHNIK website.
This article was featured in the June 2021 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.
WATCH: Water main renewal time lapse
CWW said Interflow’s renewal on Collins Street took more than 13 weeks to complete, with works undertaken at night.
“As the city slept, our crews were out undertaking these vital works to ensure a safe and secure water supply for residents, office workers, local traders, and visitors to Melbourne’s CBD,” said CWW in a social media post.
“Now we have finished Collins Street, we will be moving to Bourke Street where our delivery partners Downer will be starting the water main renewal between Meyers and Exhibition Street.”
On 1 July, CWW combined with Western Water to form Greater Western Water.
The new entity was formed in order to create an organisation with the financial resources and staff to cope with the region’s population growth and demand for new infrastructure, while also reducing household water bills.
For more information visit the Greater Western Water website.
WATCH: Channel Island Bridge Pipeline update
Spiecapag and HDI Lucas have released a video update of their work on the APA Group Channel Island Bridge Pipeline replacement project.
The family line
M. Tucker & Sons is a proud family business that is heavily sought after in the sewer pipe relining industry and a trusted provider of various other trenchless and civil solutions.
$2.4m Hobart pipeline replacement underway
TasWater has commenced work upgrading one of Hobart’s major water distribution pipelines.
Main installations begin at Cadell
The new main is on River Terrace in Cadell and is part of the utility’s four-year, $155 million water main management program.
SA Water General Manager of Sustainable Infrastructure Amanda Lewry said the ongoing investment would ensure a reliable and safe supply of clean water.
“We are using PVC pipes for the majority of our water main replacement program, which are known for their better flexibility and resistance to movement, compared to fibro-cement.
“While it’s difficult to completely stop water main leaks and breaks from occurring due to soil movement, weather and a variety of other environmental factors, we’re committed to proactively limiting their frequency and any potential impact on our customers,” she said.
“With the new pipes having an approximate life span of up to 100 years, this project ensures we can keep providing our customers in Cadell with safe, smart, reliable and affordable water services for years to come.”
Construction is anticipated to take approximately three weeks to complete, with works to take place between 7am and 5pm from Monday to Friday.
For more information visit the SA Water website.
Seqwater replacing bulk water pipeline
A leak in the pipeline was discovered under the mudflats of MacLeay Island in May, with the Seqwater team mobilising to site immediately to begin investigations.
“Seqwater has been monitoring the situation around the clock to ensure the leak does not cause water disruption for the community,” said Seqwater Chief Operating Officer Stuart Cassie.
“The water pressure within the pipeline remains strong, which means we are delivering on our promise to maintain supply to Macleay Island.
“All residents can continue their normal water use at this time.”
Mr Cassie said with drilling investigations now complete, the team will drill a hole suitable for a new 400 mm pipeline to be installed.
Seqwater will temporarily turn off water supply to both islands in order to switch to the new pipe.
For more information visit the Seqwater website.
Seqwater begins first stage of water pipe upgrade
The pipes supply water from the Mount Crosby Treatment Plant to Brisbane and Ipswich.
“Up to 60 per cent of the water supply for Brisbane and Ipswich passes through these valves every day, so this work is critical to the ongoing supply of safe drinking water for the region,” Queensland Minister for Water Glenn Butcher.
“The work will involve taking a 4 km section of the pipes at Barnes Hill offline temporarily to replace four valves which are reaching the end of their service life.”
Minister Butcher also stated Seqwater will begin carrying out the first stage of the work this weekend, where a trial will be carried out involving temporarily isolating pipes to carry out network checks to help plan the works.
Seqwater CEO Neil Brennan said Seqwater and Urban Utilities were working together to ensure water supply was maintained during the trial and valve replacement works.
“On average, around 400 million L of water flows through the pipes at Barnes Hill every day,” he said.
“We’ll be working with Urban Utilities to supply water from other parts of the network to minimise impacts for residents and businesses.”
Urban Utilities Spokesperson Michelle Cull said some properties in Brisbane and Ipswich may experience reduced or low water pressure during the trial and valve replacement works.
“It is also possible customers in some suburbs may notice their water has a different taste or smell as they will receive water from supply locations they don’t typically get water from during the trial and valve replacement works” she said.
“These changes will be temporary, and the water remains safe to drink.”
No homes or businesses should experience a loss of water during the trial or the valve replacement works.
Following the trial, a date will be set for the valve replacement project in July.
For more information visit the Seqwater website.
The Wilmot way of relining
Wilmot Pipelining was recently engaged to complete a vital stormwater culvert relining project on the rail network in New South Wales.
Adept Civil works nights in Melbourne
The work is part of a major project Adept is undertaking for CPB Contractors, with works taking place over a series of nightshifts while Melbourne is in lockdown due to a recent COVID-19 outbreak.
Nightshift is the preferred option for work in this case as the company is connecting newly constructed water mains into the existing South East Water main system and this will help ensure there is no disruption to the utility’s customers or network.
“A huge thanks to the Water Network team at South East Water and our team at Adept Civil Group, for the excellent planning into the coordination of shut downs and connections,” the company said in a social media post.
“It is no coincidence that things are going to plan.”
Polywelding Specialists were also enlisted to conduct welding for the project.
Established in 1999, Adept Civil Group specialises in the supply and installation of water and sewerage drainage pipelines, pump stations and associated services for the Melbourne Metropolitan water boards and tier one contractors of Victoria.
For more information visit the Adept Civil website.
WATCH: Inside the Central Interceptor launch shaft
The project is being delivered by the Ghella Abergeldie Joint Venture (GAJV) and will comprise nearly 20 km of tunnels, more than 17 shafts, a major pump station and significant wastewater management and network infrastructure works.
In July, the project’s 190 m long tunnel boring machine (TBM), named ‘Hiwa-i-te-Rangi’, will begin tunnelling the NZ$1.2 billion ($1.12 billion) project from the shaft which extends 40 m below the surface.
Watercare CEO Jon Lamonte was the first official visitor to the site, and said the first thing that struck him was the scale of the project.
“The amount of engineering challenges – someone was saying a second ago that we’re actually under the sea here, and you realise just how much of an engineering task that is let alone anything else.
“This is something we’re building for Auckland’s growth,” he said.
The Central Interceptor will run underground from Western Springs, near the Auckland Zoo, to the Māngere Wastewater Treatment Plant.
The project will result in cleaner waterways for central Auckland and is scheduled for completion in 2025.
For more information visit the Watercare website.
The way to go in WA
With a primary objective of protecting the new water main during operations, a lower profile kwik-ZIP spacer model was used – demonstrating the manufacturer’s versatility.
kwik-ZIP® General Manager Paul Jeffreys said the project involved abandoned gas mains with numerous internal protrusions, such as joints and welds.
Because of this, there was significant concern that the PE carrier pipes for the new water main could be scratched and damaged during the slip lining operations.
However, thanks to kwik-ZIP’s wide range of spacer models, the lower profile HD-30 spacer was used on the project to help ensure the water main was protected.
Mr Jeffreys said the curved bow spring design ensures PE carrier pipes can easily ride over any protrusions and therefore be protected from damage.
“HD spacers are also fitted with grip pads to prevent spacers slipping on the carrier pipe during installation,” he said.
While HDPE pipe manufacturers generally advise that HDPE pipe needs to be de-rated in regard to its pressure if scratches exceed 10 per cent of the wall thickness of the pipe, kwik-ZIP’s spacers negate such need thanks to the inbuilt flexibility.
“This highlights the benefit of using kwik-ZIP spacers for slip lining applications both inside an enveloper, and in open boreholes,” said Mr Jeffreys.
“The runners ensure that the pipe can’t make contact with the enveloper during and after installation.”
Wide range of products and capabilities kwik-ZIP’s large array of spacers caters for a wide range of inner diameter and outer diameter combinations as well as providing flexibility to deal with various project requirements and alterations.
Site Engineer Jo McAnulty for the WA water main project said the kwik-ZIP spacers were a great solution for slip lining, alleviating the risk of potential damage to the PE pipe during the process.
“Thanks to PJ and the kwik-ZIP team for their excellent customer service, they were fantastic to deal with from start to finish and we’ll certainly keep them in mind for future projects.”
In addition to their proven success on this project, kwik-ZIP’s spacers are also often used on metro tunnel works, rail crossings and pipeline duplication projects thanks to the simple and efficient installation process that does not require any tools.
kwik-ZIP spacers have no metal parts and are made from the company’s engineered thermoplastic blend that is flexible, extremely tough and has a low co-efficient of friction.
For further information on kwik-ZIP® products and to discuss specific project requirements please contact the team at sales@kwikzip.com
This article was featured in the March 2021 edition of Trenchless Australasia. To view the magazine on your PC, Mac, tablet or mobile device, click here.
YVW constructing new sewer system
The new piped sewerage system will benefit approximately 300 properties and is being constructed from west to east.
After initial design identified the potential loss of up to 200 trees, the engineering team decided to use trenchless drilling methods to bore beneath ground level which, together with smart pressure sewer technologies, will minimise disruption to the surrounding environment and community.
The project will now result in the loss of no trees, while customers will be able to connect progressively to the new system over the next 1-2 years.
The smart pressure sewer system includes remote monitoring of every household’s pressure pump, allowing maintenance issues to be addressed without customers needing to notify YVW.
YVW General Manager of Growth Futures Chris Brace said the system will benefit locals and the environment.
“Connecting to the new sewerage system will boost convenience for customers and benefit the environment,” he said.
“Odours and pollution in waterways from septic tanks that aren’t working properly will be a thing of the past once customers transfer to the new system.”
For more information visit the YVW network.
View the latest trenchless technology tenders
Mitiamo Pipeline Project – solar system, Mitiamo Pump Station
Issued by: Water Efficiency Project
Closing date: 02 July 2021
Location: Victoria
Description: Goulburn Murray Water’s Mitiamo Pipeline Project invites tender submissions for a single contractor to complete the detailed design, supply, installation and commissioning for a new ground – mounted solar photovoltaic (PV) system and Battery Energy Storage System (BESS) at the existing Mitiamo Pipeline Pumping station. The site is located at Waranga Western Channel, Tennyson Road, Milloo and will be operational during design and construction of the solar system.
Replacement of G3 sewer rising main
Issued by: Griffith City Council
Closing date: 10 June 2021
Location: New South Wales
Description: Griffith City Council is inviting tenders from suitably qualified contractors for the removal of the existing 300 mm cast iron sewer main and replacing it with a new 300 mm ductile iron in the exact same alignment.
Nicholson Street Orbost water main relocation
Issued by: East Gippsland Water
Closing date: 25 June 2021
Location: Victoria
Description: East Gippsland Water is investing in the future to improve services to our customers. As part of our program of works, tenders are invited for the following: CONTRACT NO. 1251/B Nicholson Street Orbost Watermain Relocation
This contract is for the construction of a 55 m DN225 water pipeline along Nicholson St, Orbost between Scott St and Reed St and a 145m DN225 water pipeline along Nicholson St, Orbost between Stanley St and Gladstone St.
Provision of Beaufort WWTP Class B Recycled Water Scheme – transfer pipeline
Issued by: Central Highlands Water
Closing date: 02 July 2021
Location: New South Wales
Description: Supply and construct approximately 3 km of pipeline, installation of tanks and dam relining works at Beaufort within the CHW service area
Warragul Western Ring Main Stage 1
Issued by: Gippsland Water
Closing date: 01 July 2021
Location: Victoria
Description: This is a Lump Sum Contract, in the form of AS 4000-1997 (as amended) General Conditions of Contract, for the provision of all plant, labour, and material necessary for the site preparation works, construction, testing and commissioning of the Warragul Western Ring Main Stage 1 linking the Warragul South basin to the Drouin system on the western side of Warragul.
Rehabilitation of sewer mains by in-situ relining
Issued by: Tamworth Regional Council
Closing date: 24 June 2021
Location: New South Wales
Description: Tamworth Regional Council (Council) is seeking tender submissions from suitably qualified and experienced contractors for Rehabilitation of Sewer Mains by In-Situ Relining works. The works to be executed under this Contract shall consist of all work associated with the pipe cleaning, CCTV inspection, design, manufacture, supply, delivery to site, installation, and testing of an acceptable sewer liner to the sewer mains as specified in the asset index and plans. The conduits to be rehabilitated are predominantly DN150 gravity mains with potential for some DN225 and DN300 gravity mains.
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.
Adelaide water main replacement underway
Connecting into the existing water main at the Botanic Road/Hackney Road intersection, the new 750 mm diameter pipe will help supply drinking water to more than 160,000 SA Water customers.
With preliminary works already complete, construction will continue throughout June and will involve the installation of pipe below the footpath to minimise the impact to road users and reduce reinstatement requirements.
SA Water General Manager of Sustainable Infrastructure Amanda Lewry said any leaks or breaks in the main can disrupt water supply for the local community.
“The current section of pipe experienced a significant break several years ago, and while repairs were successfully completed at the time, we took this as an opportunity to assess the pipe’s future reliability, and prioritised it for replacement this year,” she said.
“The new pipes will be installed along a different underground route on Rundle Road and through a section of the Park Lands.
“This enables safer and easier access for maintenance and minimal impact on native vegetation during construction.
“Together with one of our major contract partners, McConnell Dowell/Diona JV, we’re committed to minimising any impacts to the community during construction, such as dust or noise caused by the use of heavy machinery and increased vehicle movement in and out of our worksite and equipment laydown area.”
For more information visit the SA Water website.
SA Water targets McLaren Vale main
Construction is expected to take around 10 days to complete, having begun at the back end of this month.
SA Water General Manager of Sustainable Infrastructure Amanda Lewry said the installation was part of the utility’s four-year, $155 million water main management program.
“While it’s difficult to completely stop water main leaks and breaks from occurring due to soil movement, weather and a variety of other environmental factors, we’re committed to proactively limiting their frequency and any potential impact on our customers,” she said.
“We use PVC pipes for the majority of our water main replacement program, which are known for their better flexibility and resistance to movement, compared to fibro-cement.
“With the new pipes having an approximate life span of up to 100 years, this project ensures we can keep providing our customers in McLaren Vale with safe, smart, reliable and affordable water services for years to come.”
For more information visit the SA Water website.