Fast construction was achieved by careful planning of the construction process using fabricated selfclimbing formwork . All construction materials and cast-in items were delivered to the work point by barge and lifted into position by the tower crane .
With favourable wind conditions , a repeating cycle of 7 working days for each 4m construction lift was achieved .
Self-climbing tower cranes were placed outside of the deck footprint to enable continuous climb , unrestricted by deck erection activities .
All concrete was transferred from the marine yard concrete batch plant ( typically 90m 3 / hr concrete production ) to the towers via barge .
Once at the towers , the concrete barges ( 72m 3 capacity ) were pumped into a further pump on the crane working platform prior to being pumped to the concrete distributor .
Figure 9 : Tower steel anchor boxes
Figure 10 : Barge to tower prefabricated wall
Figure 11 : Concrete barge and distributor
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