This is the turntable bridge with the walkway planking fitted. The dark
spots along the outer edge are the holes which will house the safety rail
stanchions. Notice the dark lines in the centre of the deck. This is where
the copper cladding had been removed, to ensure there is no direct contact
between the two rails. Each rail will pick up the positive or negative of
the 12 volt power used to drive the turntable.
The photograph shows the progress in laying the race rail on which the
turntable bridge rotates (size of the board is 60cm x 60cm). The rail sits
in 60 chairs and each chair requires two holes to be drilled so they can be
pinned sown. The lighter coloured portion is the turntable well, which
slopes to the centre so that rainwater can feed into a centre drain. The
very centre is where the turntable spindle passes through to the motor which
drives the turntable. The two black objects at the bottom are only the feet
of the camera tripod.
