The western tower, along with the first three deck segments, were built at the same time and completed in mid 1993. During construction the three deck segments were supported by scaffolding and then, when tower construction was completed, the first stay cables were installed.
The sub contractor responsible for the cable stays was Austress Freyssinet Pty Ltd.
12m lengths of polyethylene sheath were welded together on the deck and an initial wire strand drawn in.
The sheath and strand were then winched into place and the initial strand fixed into the anchor points and tensioned to its predetermined load. 3.
The remaining strands were then individually drawn into place through the polyethylene sheath from the deck level using a drawing wheel.
After being secured in an adjustable anchorage point in the tower head, the strand was cut to length and fixed at deck level.
A hydraulic jack at the tower top was then used to set the final strand tension to match that of the initial strand. 1.3.8.