Trimble technology has provided the solution to a monitoring need that would otherwise have required two manned locations operating 24/7.
Required for just two months on a major Brisbane road project, the monitoring was needed to report on deformation in a sensitive work area during foundation works. On top of that, the work zone was a busy one with machinery and workers operating in it around the clock.
At just 150m long and under 20m wide, the tight site needed two separate vantage points for 40 monitoring prisms. The two total stations deployed were able to give overlapping coverage as well as minimising obstructions on the site.
The system was deployed and live within days of the client’s decision to proceed with the hire, which meant significant delays and associated costs were avoided.
Solar kits to power the system were installed on Kelly blocks on the edge of site so traffic flow was not affected.
The use of Trimble 4D control, Trimble S9s and the Settop M1s that made up the solution to this monitoring problem meant there was no need for manned survey locations, which would have been required around the clock – another cost saving. The automated system also worked faster than any manned station could as turnaround for data processing and reporting is in real time.
“We collected data at a resolution not possible with traditional methods,” UPG’s Brent Dawson said. “Through the use of automated alarming we had the ability to be ready to stop works if deformation was occurring and also had a streamlined daily report that was available for quick review all in once place.”
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