Retaining Walls
Retaining Walls
Caporn Piling specialises in retaining wall solutions, including contiguous, soldier, secant, and sheet pile walls, providing stability, soil retention, and water management for deep excavations. Our expertise in ground anchors and soil nails ensures additional lateral support for challenging ground conditions.
Retaining Wall Solutions:
Contiguous Pile Walls – Constructed with minimal gaps between piles to retain soil before excavation, with shotcrete or secondary lining applied as needed.
Soldier Pile Walls – Spaced piles designed for dry, stable soil conditions, reinforced with shotcrete or a secondary wall.
Secant Pile Walls – Overlapping piles with alternating soft and hard concrete for a fully interlocked water-resistant barrier.
Sheet Pile Walls – Continuous pre-formed steel sections, ideal for earthworks support, flood defence, seawall stabilisation, and cofferdams.
Ground Anchoring & Soil Nails
For deeper excavations, temporary ground anchors or soil nails provide additional lateral support until the structure can sustain the load.
Ground Anchors – High-tensile steel strands grouted into pre-drilled holes, tensioned against the piled wall for deep anchoring solutions.
Soil Nails – Threaded steel bars installed in shallow ground conditions to reinforce excavation stability.
All our retaining wall and anchoring solutions are engineered to meet industry standards, ensuring safe, durable, and effective ground retention systems.
Retaining Wall Projects
The Australian Bragg Centre for Proton Therapy and Research is a groundbreaking medical facility that will be Australia’s first proton therapy centre and the first of its kind in the Southern Hemisphere. This cutting-edge facility will revolutionise cancer treatment by providing advanced proton therapy, offering greater precision and fewer side effects compared to traditional radiation therapy.
Project Scope:
Perimeter Secant: 322 CFA piles (600mm diameter), up to 13m depth, with 138 temporary anchors and continuous walers
Bunker Secant: 214 CFA piles (750mm diameter), up to 14m depth, cantilever design
Foundation: 118 CFA piles (600mm & 900mm diameter), up to 28m depth
Project Value:
Approximately $4,000,000
Equipment:
Woltman THW 7528-D
Track Mounted Concrete Pump
Soilmech SM14 (anchors)
Caporn Piling is proud to partner with Lend Lease in delivering the foundation works for this world-class medical facility, ensuring a strong and stable base for the future of cancer treatment in Australia.
Caporn Piling successfully delivered specialist foundation solutions for the 2.5km slope rehabilitation project on the Sunshine Coast, commissioned under the National Disaster Relief and Recovery Arrangements (NDRRA) following extreme weather events. This critical project restored stability and safety to the affected section, ensuring long-term resilience against future conditions.
Project Scope
Installation of 116 cast-in-place, lined bored piles (750mm diameter, up to 10.6m deep).
Construction of a retaining wall from a Caporn-designed temporary platform to enable safe and efficient piling works in challenging terrain.
Equipment Utilised
Bauer BG28 drill rig for precision pile installation.
Manitowoc M12000 crawler crane for heavy lifting and support.
Falsework temporary structure for platform stability and safety.
Client
Seymour Whyte Constructions Pty Ltd
Project Highlights
Delivered piling works in difficult slope conditions by utilising a temporary platform to maintain safety and efficiency.
Stabilisation of a 2.5km section of infrastructure impacted by extreme weather.
Ensured project completion within tight schedules to restore critical access and prevent further erosion or slope failure.
Project Benefits
Enhanced slope stability and resilience against future extreme weather events.
Restoration of safe and reliable access for local communities.
Mitigation of environmental impacts through precision construction techniques.
At Caporn Piling, we pride ourselves on delivering innovative and dependable piling solutions in even the most challenging environments. Our expertise played a key role in stabilising this vital section, ensuring a safer and more resilient Sunshine Coast.
Caporn Piling is proud to have contributed to the Pacific Motorway (M1) Palm Beach to Tugun Upgrade, the final section of the Varsity Lakes to Tugun (VL2T) project. This major infrastructure upgrade, which includes the construction of 10 new bridges, improves safety, capacity, and connectivity along one of Queensland's busiest transport corridors.
Project Scope
Caporn Piling delivered extensive foundation works, including:
44 bored piles (900mm diameter, up to 46m deep).
72 bored piles (1200mm diameter, up to 43m deep).
24 marine bored piles (900mm diameter, up to 32m deep).
40 driven steel tubular piles (900mm diameter, up to 38m deep).
43 driven steel tubular piles (1200mm diameter, up to 41m deep).
Equipment Utilised
Bauer BG28 Drill Rig for precision bored piling.
Bauer BFD1500 Fly Drill for challenging ground conditions.
Crawler Cranes:
Manitowoc M8500, M12000, and Kobelco CKE2500 for lifting operations.
Pile Driving and Vibratory Equipment:
Juntann HHK16S Impact Hammer for driven pile installation.
ICE 58B Vibratory Hammer for casing and steel pile installation.
Client
Seymour Whyte
Project Highlights
Successful delivery of marine and land-based piling works to support 10 new bridges.
Piles installed to depths of up to 46m, requiring advanced drilling and driving techniques.
Safe and efficient operations within a high-traffic corridor and environmentally sensitive areas.
At Caporn Piling, we bring expertise, innovation, and precision to complex infrastructure projects. Our work on the Pacific Motorway Palm Beach to Tugun Upgrade delivered the robust foundations required to support Queensland’s future transport needs.
Caporn Piling delivered advanced secant piling solutions for the Kidston Pumped Storage Hydro Project, a groundbreaking 250MW renewable energy facility designed to generate power for the national grid using a pumped hydro storage process.
Project Scope
Cable/Access Shaft:
32 secant piles (750mm diameter, depths ranging from 9.3m to 13.6m).
Ventilation/Exhaust Shaft:
34 secant piles (750mm diameter, depths ranging from 9.5m to 15.0m).
Equipment Utilised
Bauer BG28 drill rig for precision piling operations.
Manitowoc M12000 service crane for lifting and support.
Client
McConnell Dowell John Holland Joint Venture
Project Details
During raisebore operations, the shafts encountered extremely weathered rock in the top 20m of ground, posing risks of ground squeeze, ravelling, and instability. To mitigate these risks, Caporn Piling installed circular secant piled rings as part of an advanced presink activity.
Secant piling forms an overlapping ring of piles that stabilises the upper shaft zone, preventing collapse during reaming operations.
The secant piled rings enabled the raisebore machine to operate safely, providing a secure platform with negligible differential movement during operations.
Project Challenges & Innovations
The need for presink piles arose following comprehensive geotechnical investigations, identifying areas of unstable ground not originally accounted for in the scope.
Innovative piling solutions ensured the raisebore operations could proceed without risking shaft instability.
At Caporn Piling, we specialise in delivering innovative and dependable piling solutions for complex projects. Our work on the Kidston Pumped Storage Hydro Project ensured critical ground stability, supporting the successful delivery of one of Australia’s leading renewable energy initiatives.
Caporn Piling is proud to support the Stage 6 development of the iconic Burnside Village Shopping Centre in South Australia. This expansion project includes the construction of 18,500m² of additional floor space and two basement car park levels, providing enhanced amenities for shoppers and the local community.
Project Scope
Installation of:
1,203 CFA piles (600mm, 750mm, and 900mm diameter, up to 19m deep) for a soldier pile retaining wall.
110 temporary anchors ranging from 15m to 20m in length for structural stability.
9 CFA piles (600mm and 900mm diameter, up to 17m deep) for foundation support.
Equipment Utilized
Bauer BG28 piling rig for efficient CFA pile installation.
Track-mounted concrete pump for seamless concrete delivery.
Soilmec SM14 for precision anchor installation.
Client
McMahon Services
Project Highlights
Delivery of extensive CFA piling solutions for the basement retaining wall and foundation structure.
Installation of temporary anchors to ensure structural stability during excavation and construction.
Execution in a congested urban environment, requiring precise planning and innovative construction methods.
Caporn Piling successfully delivered the construction of a landfill gas cut-off wall at Brisbane City Council’s former Cemetery Road Landfill site, now transformed into the Upper Kedron Reserve. This essential project utilized vinyl sheet pile wall methods to effectively manage landfill gas emissions, ensuring environmental protection and community safety.
Project Scope
Excavation of 175 lineal metres of 3m deep bentonite slurry trench for gas containment.
Installation of 175 lineal metres of SG425 vinyl sheet piles up to 10 metres in length, providing a secure gas cut-off barrier.
Application of Adeka A50N sealant to ensure a watertight and gas-impermeable seal.
Equipment Utilised
Bauer RG16 rig for efficient and precise vinyl sheet pile installation.
Client
Epoca Constructions
Project Outcomes
The landfill gas cut-off wall delivered critical environmental benefits, including:
Effective containment of landfill gas emissions to protect nearby land and communities.
Transformation of a former landfill site into a safe, sustainable green reserve for public use.
Implementation of innovative solutions to meet environmental compliance standards.
At Caporn Piling, we are proud to contribute to environmentally responsible projects, delivering innovative piling and gas management solutions that transform legacy sites into valuable community assets.
Following a slip failure approximately 80 metres long along the McIntyre River near Goondiwindi, urgent stabilisation works were required to protect nearby properties and prevent further erosion. The project involved excavating the failed material, constructing a piling platform, and installing sheet piles and a rock mattress to reinforce the riverbank.
Project Scope:
56 sheet piles (12m long)
Project Value:
Approximately $1,200,000
Equipment:
SR60 Piling Rig
M12000 Crane
ICE55NF Vibrator
Working in collaboration with Everest Civil, Caporn Piling successfully delivered this critical riverbank restoration, ensuring long-term stability and erosion protection for the affected area.