APLNG Materials Offloading Facility

Client: Bechtel
Capabilities:
Region: Gladstone (Queensland)

Waterway Constructions is designing and constructing a Materials Offloading Facility, an LNG project in Gladstone, Queensland.

The work involves the design and construction of a Roll-on Roll-off (Ro-Ro) and Lift-on Lift-off (Lo-Lo) wharf on Curtis Island which is within Gladstone Harbour and is part of early works to facilitate the deliver materials for the construction of the LNG plant.

The Ro-Ro wharf will be used to unload pre-assembled units for the plant which will be up to 83m long, 29m wide and 25m high and weighing up to 3,200 tonnes. The Lo-Lo wharf will be used for unloading components weighing up to 250 tonnes. The hardstand area behind the wharves is designed for a working load of 140 kPa.

Works will include –

• construction of a 230m long HZ combi wall;
• installation of anchor ties to the wall;
• transfer of 300,000 tonnes of rock fill from the mainland to Curtis Island some 8km away. Up to 400 barge loads will be required to transfer the fill and other construction materials.
• placement of the rock fill behind the walls together with associated earthworks;
• concrete capping beam and slab;
• six berthing dolphins; and
• navigation aids