Wiggins Island Export Terminal

The berthing dolphins required a temporary piling frame to support accurate installation of raking piles, headstocks and associated construction access. The frame needed to work within a constrained marine environment, with low headstock levels close to HAT and piles raking 1:3 in two directions.

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Key Project Elements

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Piling Frame Design

• Detailed design of the piling frame for berthing dolphins
• Horizontal frame divided into pinned segments to simplify assembly
• Support for the pile gate system
• Personnel access for headstock installation, welding and touch-up painting

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Construction Challenges

• Raking piles in two directions
• Low headstock levels close to HAT
• Need for precise headstock installation
• Safe access for welders and site personnel

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Temporary Works Solution

• Front raking piles driven using a pile gate system also used for wharf piles
• Back raking piles driven using a two-gate piling frame
• Temporary headstock supported on the front raking piles
• Front raking piles braced to a 19m x 10m platform supported by the main piling frame

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The temporary works strategy gave the construction team a controlled method for pile installation, bracing and headstock placement. It combined modular assembly, safe access and practical site methodology for complex dolphin construction.