Basement retention, Melbourne CBD development
Press-in sheet piling around a deep basement excavation in the CBD, with adjacent heritage structures to either side. Vibration-monitored install, zero excursion.
A commercial development in the Melbourne CBD required 9 to 12 metre deep basement retention against two boundary lines with heritage masonry structures within metres of the excavation face. Vibration tolerance to the heritage structures was effectively zero.
We installed permanent sheet piling using a silent hydraulic press-in rig, eliminating both vibration and noise. Sheets were driven to design penetration with verticality and interlock recorded per panel. A continuous vibration monitor on the heritage facades logged across the install, with results inside the agreed exclusion limit at every reading.
Capping beam was poured by our crew on completion, and the principal’s basement excavation crew worked into the dry, retained space the following week.