Rail bridge piers, Western Victoria upgrade
24 bored piers up to 1,800 mm diameter for new rail bridge approaches. Socketed into basalt with rock auger; full pour records issued per pier.
A regional rail upgrade required twenty-four 1,800 mm diameter bored piers for two new bridge approaches, drilled between 18 and 32 metres deep. Founding stratum was specified as competent basalt across the alignment, with depth varying as the geotech pulled core samples in advance of each pier.
We ran a heavy rotary rig with rock auger and core-barrel attachments, working alongside the principal contractor’s setting-out crew. Each pier had its founding stratum verified by our on-site geotech before the cage dropped, and concrete placement was tremie-tracked from delivery through to over-pour.
The full pour record per pier — depth, founding RL, cage drop time, concrete volume, slump and break-strength results — was packaged with our chartered-engineer certification and lodged into the principal’s document control before the rigs left site.
Geotech was variable across the alignment and the program had no slack. Their crew adjusted the rig and tooling on the fly and we kept piers in the ground every shift.
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