Mayfield Berth #5

BMD Group engaged CMA Contracting (a Delta Group company) to complete a marine-based demolition project for a (former) BHP site in Newcastle, New South Wales.

 
The scope of works included:

• Demolition of existing structures – concrete wharf/berth , concrete/steel piles and mooring dolphins.
• Engineering study – simulation and modelling for proposed deconstruction methodology.
• Emissions, noise and vibration controls.
• Environmental management controls – floating turbidity boom.
• Transport logistics – traffic management and supervision.
• Recycling and reuse of construction waste materials.

Our specialist demolition works programme was staged over 17 weeks and involved:

• Heavy plant and equipment – 330t crane and rigging, hard stands, marine support vessels, 35t excavators fitted with precision attachments and specialist concrete cutting equipment.
• Dredges – Clamshell and Bucket, as well as a team of divers utilising air lift bags and cardox.
• Custom designed methodology for demolition of mooring dolphins, concrete slabs, walkways, pipework and cable rays.
• Specialist concrete cutters core-drilled the Main Wharf to enable lifting/removal of the deck off the piles – cutters road sawed into suspended slab sections prior to rigging for crane lifts.

Our work was completed without incident and also involved the recycling of large rubber fenders, more than 138t of scrap steel and reinforcing, and 4,000t of concrete for reuse by our client on the new wharf development