construction workers closing site with hazard tape

Victorian Government shuts down construction

Due to concerns about COVID-19 case numbers and transmission risk, the Victorian Government has announced a two-week shutdown for construction in metropolitan Melbourne and other local government areas currently in lockdown.

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Diamond Bay, NSW

Sydney Water announces wastewater project partners

Sydney Water announced it has partnered with Comdain Infrastructure and WSP on the Refresh Vaucluse and Diamond Bay project.

The project is intended to stop the continuous flow of untreated water from three ocean outfalls at Vaucluse, Dover Heights and Diamond Bay.

By re-directing wastewater flows from these catchments to the nearby Bondi treatment plant, Sydney Water will protect the health of the community and marine ecology, reducing the impact to the ocean by at least 93 per cent. 

Sydney Water and partners will address the water quality and public health risks associated with the ocean outfalls. 

The project will ensure that all wastewater is treated at Bondi’s Wastewater Treatment Plant. 

Detailed construction design has kicked off with community consultation as its cornerstone. 

During this stage, the delivery contractor will be looking to optimise the project’s design with a view to further reducing impact to the community and environment.

Horizontal directional drilling specialist Maxibor has been contracted for the project, with construction expected to commence next year.

For more information visit the Sydney Water website. 

900 mm concrete pipe on Ashburton drain diversion

Pezzimenti completes drain diversion

The company uses its own Pezzimenti-developed laser-guided microtunnelling systems and specialises in free boring, sleeve boring and pipe jacking methods. 

Last week, Pezzimenti Trenchless completed a job for Transcend Plumbing, having been engaged to construct a council drain diversion at Markham Ave in Ashburton. 

The project was tendered by the City of Boroondara to divert flow to allow for a new government housing estate to be constructed on the site.

The team used a Pezzimenti Laserbore with 1,050 mm diameter to bore through clay ground conditions to a depth of 3 m, before installing a 900 mm reinforced concrete pipe using the free bore method. 

This was the company’s first project for Transcend, and according to Pezzimenti Director Joe Pezzimenti, it set a great precedent for future working relations. 

“The project was a successful collaboration between Transcend and Pezzimenti,” he said.

“All OH&S requirements were catered for and Transcend provided a great working site with good access and conditions.” 

For more information visit the Pezzimenti Trenchless website. 

Culvert relining

Pipe relining methods take socials by storm

It’s also the latest Buzzfeed fascination.

Trenchless relining methods have gone viral on social media, with Buzzfeed sharing a video on Instagram about “the satisfying trade you didn’t know you needed to learn about.” 

The internet media mogul posted the video, “A Crazy Way to Fix Pipes”, on 2 September, which has now received nearly half a million views. 

The video shows an innovative method for relining pipes that eliminates the need for excavation, making it a much more cost effective and time efficient solution that eliminates disturbance to the surrounding environment.  

The clip shows a sleeve covered in resin being pushed through the old or damaged pipe by a bladder of compressed air. 

The resin is coated on the inside of the old pipe and cures into a new, smooth lining. 

First, the old pipe is removed of any debris so the lining is able to fit through the pathway, then the pipe is inspected and measured so the lining and bladder can be cut to size. 

In order for the sleeves to turn into hard pipes, they are lathered in a resin with different chemical compounds depending on the use of the pipe. 

Next, the deflated bladder is inserted into the pipeline and pushed through the pipe. 

The bladder then fills with air and stays in place until the resin is cured. 

According to the video, jobs using this pipe relining method can generally be completed within two hours. 

The video now has more than 400 comments, with viewers commenting on the practicality and innovation of the solution. 

To view a list of pipe relining contractors, visit our directory. 

Site worker with hard hat

Shoota unveils Akkerman guided boring machine

Shoota Drilling and Civil offers a range of services, including case boring, concrete pipe jacking, shaft sinking, and drilling under rail, roads and creeks.

A family-owned business based in New South Wales, the company values safety and versatility above all else when procuring equipment to expand its fleet.

The company is most well recognised for its expertise in trenches methods of construction and Shoota recently announced it is now using an Akkerman guided boring machine for pilot bores on civil projects.

Pilot Tube Guided Auger Boring (PTGAB) is one of the most popular and cost-effective pieces of trenchless equipment for accurately installing steel casing for underground utilities, waterlines and sanitary sewers.

This method combines the pinpoint accuracy of the pilot tube installation to control line and grade with the excavation process of horizontal auger boring.

The benefits of the guided borer include line and grade accuracy prior to the advancement of casing and the PTGAB does not require removal of augers or personnel entry into steel casing for line and grade control.

Personnel entry can be hazardous in small diameters; therefore, the PTGAB is a safer solution for installation.

The PTGAB provides excellent geotechnical confirmation, and during the pilot tube installation, the contractor will have a good indication of the ground conditions including potential obstructions that can be mitigated prior to advancing the steel casing.

Shoota has an extensive range of thrust borers, pipe jacking equipment and tunnelling equipment at competitive market rates.

To view the company’s directory listing, click here.

Generic pipe leak image

South East Water using new leak detection technology

Integrated energy management solutions provider Landis+Gyr has partnered with South East Water’s commercial arm Iota to offer a network leak detection sensor. 

Landis+Gyr and Iota said the technology will help to fix leaks before they cause major disruption and reduce non-revenue water losses. 

The companies say the technology will provide utilities companies a better understanding of asset health and help to conserve money and resources. 

South East Water has an installed 5,000 Landis+Gyr smart water meters integrated with leak detection sensors in networks across Melbourne. 

The sensor is integrated into Landis+Gyr’s W350 ultrasonic and NB IoT water meter, detecting network leaks in a radius of up to 80 m. 

 South East Water Andrew General Manager for Digital Utility Forster-Knight said the new technology will be a game-changer for Australia’s water networks. 

“Access to real-time network visibility will enable us to gain a better understanding of asset health and inform our maintenance schedules and planning process,” he said.

“From our customers’ perspective, it will help us to fix leaks before they cause disruptions. 

“It will also enable us to reduce non-revenue water losses, which saves money and conserves our precious water resources.”  

Landis+Gyr has been collaborating with Iota and South East Water for several years to elevate digital water transition efforts.

For more information visit the South East Water website. 

Generic stormwater drain

Bacchus Marsh network upgrades complete

The $20 million works include an upgraded sewer pump station, a new sewer pipeline and two new water pipelines with most of the projects completed in the past month. 

GWW General Manager Growth and Infrastructure Amanda Smith said with the local population projected to double to 46,000 in the next 20 years, this investment will ensure the network can meet demands for services for many years to come. 

“It ensures GWW can meet the demand for sewerage services for at least the next 15 years,” said Ms Smith.

“These projects have been safely delivered under COVIDSafe settings, demonstrating the concerted efforts of staff and contractors.”

Works included $6.7 million upgrade to the Grant Street Sewer Pump Station, $9.2 million in 8 km of sewer pipeline from Peelmans Lane to the Bacchus Marsh Recycled Water Plant, and $3.4 million on a duplicate sewer pipeline from Holts Lane to the Avenue of Honour.

These are only a few of the major projects that have been under development and construction across the service area. 

For more information visit the Greater Western Water website. 

Interior pipe image

VAPAR technology creates smart sewer and stormwater solutions

Sewer and stormwater sectors are challenged with ageing infrastructure and limited budgets, with much of the industry still using traditional methods to manage the pipe condition assessment processes, despite emerging technology and new opportunities enabling smarter work practices.

The current environment requires a rethink of how best to manage these networks, and VAPAR’s philosophy since inception has been to empower engineers and project managers to achieve more in less time.

By identifying inefficiencies and developing solutions through software innovation, VAPAR is revolutionising the industry with artificial intelligence (AI) and cloud storage technology.

Key benefits include automated defect coding with more than 5x faster results compared to manual methods, accuracy and consistency through algorithm-based processes, informative risk-based insights and a secure central location for all files.

In 2021, VAPAR launched its partner program of industry experts, bringing the VAPAR benefits directly to councils and utility companies and, since July, Veolia and Interflow have been at the forefront of this partnership.

Veolia develops smart water offerings that contribute to improving operational performance, and in 2020, the company joined forces with VAPAR to combine network operations and AI. 

Leading pipeline infrastructure company Interflow recently partnered with VAPAR to revolutionise its condition assessment service offering through the power of AI. 

Interflow Operations Manager Jason Dearing is optimistic that its partnership with VAPAR will result in tangible benefits for local councils and water authorities alike.

“By improving the efficiency and accuracy of our CCTV pipeline surveillance, we aim to save our customers time and money,” said Mr Dearing.  

“This will also benefit the communities in which we work, by streamlining projects so that disruption is kept to an absolute minimum.”

With the power of AI, cloud technology, and working with its ecosystem, VAPAR is rapidly digitising and centralising pipe assessment workflows.

For more information visit the VAPAR website.

 

CRL under Auckland city

Works on hold for Auckland supercity

Watercare commenced works on the Central Interceptor project in Māngere last month, with the 14.7 km sewer tunnel to run from Grey Lynn to the Māngere Wastewater Treatment Plant and expected to be completed in 2025. 

Once completed, it will be the longest bored wastewater tunnel in New Zealand. 

According to the Executive Program Director Shayne Cunis, the project came to a  halt in recent weeks due to recent COVID-19 outbreak. 

Mr Cunis said that under the public health response legislation, basic operations were still permitted, but expects the project’s operations to be able to return to “normal” when Auckland shifts to alert level 3.

Greater onsite restrictions for staff will still be in place after the alert level is downgraded, with workers having to maintain social distancing and onsite “bubbles”.

He said the latest lockdown will affect the time it takes to complete the project, but he remains confident it can still be delivered on budget.

Across town, developments on the $4.4 billion City Rail Link have also been stalled. 

A spokesperson from the Ministry of Business, Innovation and Employment (MBIE) said they were unable to confirm what operations will look like for the CRL and Central Interceptor projects under level 3 restrictions. 

For more information visit the Watercare website. 

Featured company: Adept Civil Group

Accreditation and current contract partnerships include City West Water, Yarra Valley Water, South East Water, Western Water and Barwon Water.

Adept Civil Group is committed to developing long term professional relationships.

The company aims to ensure optimal outcomes for clients, who can be confident in the knowledge that Adept complies with all relevant industrial codes, licenses and laws through teams of experienced engineers, supervisors, machine operators pipe specialists, labourers and experienced project managers. 

Click here to view the company’s directory listing.

For more information visit the Adept Civil website.

$90m allocated for SA water infrastructure

The Premier of South Australia announced last Friday that a stimulus package of nearly $90 million would be dedicated to delivering a range of water services to the state.

The projects will range from delivering additional water to Barossa Valley wine producers, to supplying high-tech glass houses in Virginia.

The projects will be jointly funded by the Marshall Liberal Government, the Commonwealth, and partners under the National Water Grid Fund.

Minister for Primary Industries and Regional Development David Basham said the projects will provide a significant boost to South Australia’s agricultural industry.

Premier Marshall said these 10 projects across the state will grow jobs by delivering new and affordable water, enhancing water security and stimulating regional development.

“These projects will both support existing primary industries and allow for new and expanded agriculture to be undertaken in some of South Australia’s most important agricultural areas,” he said.

The delivery of the projects, including the installation of new infrastructure, is estimated to support around 800 jobs.

For a full list of the projects, including the new Nairne recycled water pipeline ($1.29 million) and the Barossa grape water source diversification ($9 million) projects, visit the South Australian Government website.

 

Ballarat

Ballarat CBD sewer line installed

Ballarat’s two largest sewer lines, Ballarat East and Ballarat South, were constructed almost 100 years ago.

These sewer lines are now in the process of upgrade, where both will be duplicated over the next 3-5 years with the new lines installed parallel to the existing sewer.

Central Highlands Water (CHW) has invested $25 million into the major project, and the upgrade is intended to service the Ballarat community for another 100 years.

Stage one of the project commenced in mid-Aril 2021 with open excavation and microtunnelling in the CBD area.

Microtunnelling techniques were used where possible to minimise ground disturbance; however, attempts at Little Bridge Street were unsuccessful due to ground conditions and excavation was instead necessary.

CHW was to install a 600 mm diameter sewer pipe 4.5 m beneath Peel Street, from Scott Parade to Little Bridge Street.

CHW announced the completion of the CBD section on Friday 8 August, with construction now continuing on Peel Street heading south.

CHW Project Manager Mick Dwyer said the work on the CBD section had been both crucial and challenging.

“This critical section through the Ballarat CBD was always going to be one of the most complex, due to the proximity of Peel Street businesses to the sewer path plus the difficult ground conditions beneath the surface.”

“The need to change our approach at the Little Bridge Street intersection was unforeseen, even with the significant amount of investigation works completed prior,” he said.

For more information visit the Central Highlands Water website.

Watercare Central Interceptor TBM

Central Interceptor TBM launches

On 30 July, Tunnel Boring Machine (TBM) ‘Hiwa te Rangi’ (roughly translated, ‘vigorous growth’, a promise of a prosperous season) set off on her 14.7 km journey under Auckland city.  

 Auckland Mayor Phil Goff gave orders to start up the TBM at a launch ceremony at a construction site next to Māngere Wastewater Treatment Plant. 

The TBM began cutting at the bottom of the 40 m launch shaft and will travel north to its ultimate destination in Grey Lynn.  

The Central Interceptor is an NZD$1.2 billion (AUD $1.14b) wastewater tunnel, which, once completed, will be New Zealand’s longest bored tunnel.  

Providing both storage and conveyance, it will hold 226,000 m3 of water and provide significant environmental benefits to the area.  

Historically, heavy rain has overwhelmed the network, creating overflow into neighbouring streams.  

Mayor Goff said the Central Interceptor will reduce overflows into waterways and harbours, improving water quality and ensuring clean, safe beaches.  

Wastewater is to be stored and conveyed at the Māngere Wastewater Treatment Plant and the tunnel has been designed to operate for 100 years.  

Mayor Goff also said that, once operational, the Central Interceptor tunnel will stop more than 80 per cent of wastewater overflows from Western Isthmus.   

Hiwa te Rangi, according to Māori legend, is one of the Matariki stars to which Māori would send their dreams or aspirations for the new year. 

The name was chosen by students who attend school along the route.  

Soil conditions will dictate the TBM’s progress, which is likely to be around 12-16 m per day. 

The project is scheduled for completion in 2025.  

For more information visit the Watercare website. 

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. 

Quick-Lock remains key to pipe repair

For structural, trenchless pipe repair, the company offers the Quick-Lock solution.

The Quick-Lock system has revolutionised sewer rehabilitation through its wide range of applications and strong reliability.

Using heavy-gauge 316 stainless steel with infiltration abatement with an EPDM rubber gasket, the Quick-Lock system seals and stabilises damage completely by mechanical means, removing the need for chemicals and making it suitable for all pipe materials.

The patented locking system ensures that the sleeve stays permanently in position and, after rehabilitation, the sleeve has its own static capability and absorbs the natural tectonic movements of the pipe. 

The system can be used for standalone permanent point repair, or for pre-lining stabilisation works including high groundwater infiltration.

Quick-Lock sleeves restore a pipe’s structural integrity and seal out groundwater, and they are carefully designed to minimise diameter loss and outlast any other rehab.

For larger pipes, SECA offers the Quick-Lock BIG sleeve, which permanently seals leaking pipe joints, radial cracks, and longitudinal cracks in large pipes and manholes of DN800 and larger.

The BIG sleeves are 20 cm wide, and the system is made from V4A stainless steel of grade 1.4404 (AISI 316L) and an EPDM compression seal. 

These materials are permanently resistant in municipal wastewater systems, while their suitability must be ascertained for use in industrial or polluted wastewater.

Out in the field

SureSearch has more than 20 years of operating experience as a company, providing all aspects of utility investigative works, including location, non-destructive excavation, utility survey, mapping and clash detection, CCTV inspections, drain cleaning and pipe rehabilitation offers. 

SureSearch Sales and Development Manager Calyn Wilkinson said the company was relatively new to the pipe rehabilitation sector and felt using the Quick-Lock system was a good way of entering the market. 

“SureSearch has used the Quick-Lock system for both sewer and storm water rehabilitation,” he said. 

“It has been used for sealing joints, holes and also infiltration through cracks.

“Due to the fast installation time and no curing of material, it has a great advantage over the cured-in-place pipe (CIPP) method. 

“More installations can be achieved in a shift and if traffic control is required then this limits the amount of money spent on traffic control shifts.”

Quick-Lock end caps strengthen a CIPP liner at its most vulnerable points—the ends.

This mechanical solution prevents liner and host pipe infiltration or exfiltration for the lifetime of a close fit liner. 

It is particularly most effective on EX, spiral, and UV cured liners, and it is stronger and easier to install than other end caps, making them highly beneficial on any long-term watertight lining project.

Quick-Lock systems can be purchased from SECA’s warehouses or from SECA’s nationwide sales representatives.

For more information visit the SECA 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.