This project involved the installation of navigational structures, requiring meticulous planning and execution to ensure structural integrity and compliance with maritime regulations. As a preliminary step, a Dial Before You Dig (DBYD) assessment was conducted to identify any potential underground or subsea services that could interfere with the works, ensuring safety and minimising risks.
The project scope included the pre-fabrication of piles, top structures, and day marks, allowing for efficient on-site installation while maintaining high-quality construction standards. Additionally, a protective coating system was applied to all components as specified by the Port Authority of New South Wales (PANSW), ensuring durability and resistance to harsh marine conditions, including saltwater exposure and tidal fluctuations.
To support the installation process, subsea diving operations were carried out to facilitate pile positioning and ensure accuracy in placement. The piles were installed using a vibration method, designed to achieve a minimum embedment of 10 meters in the sandy seabed. This method was chosen for its efficiency and ability to minimise environmental disturbance while providing a stable foundation for the navigational structures.
Once the piles were in place, they were cut to the required height, and a field splice was installed in situ to join the sections securely. Following installation, weld testing was conducted to verify the strength and quality of the connections, ensuring compliance with engineering standards. Final protective measures included paint repairs to any areas affected during installation and the application of Denso wrap 1 meter around the pile splice in the tidal zone. This protective wrapping provided an additional layer of defense against corrosion and environmental degradation, enhancing the longevity of the structure.
This project showcased precision engineering, environmental awareness, and efficient installation techniques, delivering robust and long-lasting navigational structures designed to withstand the demanding conditions of the marine environment.
From vessel chartering and logistics to marine engineering and offshore support, our comprehensive marine services are tailored to navigate your success on water.
Our construction expertise extends to marine infrastructure, waterfront development, and coastal engineering. With a proven track record of delivering robust solutions, trust PMG to construct the foundation for your projects.
From vessel chartering and logistics to marine engineering and offshore support, our comprehensive marine services are tailored to navigate your success on water.
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Gate 2, James Craig Rd, Rozelle NSW 2039
Phone: +61 2 9563 8333
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