Sydney Harbor Bridge.

Gisborne Times, Volume LXVIII, Issue 10739, 9 November 1928, Page 2

Sydney Harbor Bridge.

GREAT CABLES BEING PREPARED.

AVILL CARRY. 16,000 : TONS.

The first of the 128 steel cables which will support the southern hair of the arch of tlie Sydney Harbor bridge during its construction lias re ct'iitly teen placed in position, ready io be attached to the two end posts. These posts will rest on the giant bearings at the base of the pylon at Dawes Point, and a commencement was made early last month with their erection. From then on .the-cables will take an increasing strain, until, just before- the two halves of the arc-h meet, they will support the 16,coo toils weight of the southern half. When this stage is reached each of the cables will be supporting a load of 125 tons.

To support during construction the iremendous weight of the sections of the arch overhanging the water the stout steel cables will be fastened to the end oosts, and Jed through guiding ‘‘saddles,” situated at out 400 ft back from each pylon, to an anchorage in the-rock, 120 ft below the surThe tunnels, through which the mass of cables will pass' to the anchorage slops downward at ail angle or about 45 degrees, and are connected at their deepest point by a tunnel driven horizontally, one face of which* nas been covered with concrete and corrugated steel sheeting to provide a bearing surface for the cables. The cables are each 2 7-8 inches in diameter. Hydraulic jacks will He employed to equalise the tension on them.