C+S March 2021 Vol. 7 Issue 3 (web)

Crews regularly need to route pipelines around private property, archeological sites, protected habitats, utilities, and waterways.

that will run from Cushing, Oklahoma south to Trenton, Texas. The 185-mile pipeline is part of a planned 840-mile line that will eventually extend to the Gulf of Mexico. Because cellular and network coverage in this remote area is spotty, VRS and RTK won’t be options. Instead, Topographic’s crews are again using CenterPoint RTX with a Trimble R10. “Like most of our projects, this job requires that we survey everything with centimeter- level accuracy,” says Waldrip. “We can only do this using Trimble RTX correction service.” Because CenterPoint RTX performance is equivalent to VRS or RTK, the level of precision will provide Topographic’s client with the ac- curate footage of pipe, acreage of land and location of features above or below ground. To achieve this accuracy, and per the client’s specific request, Topo- graphic crews use static GNSS techniques to set control points. The static data is processed in OPUS and then calibrated to the specified Typically working in remote areas with limited cellular coverage, the Topographic crew use Trimble CenterPoint RTX with a Trimble R10 GNSS Receiver.

With Trimble CenterPoint RTX, users achieve horizontal accuracy of 2cm in real time.

coordinate system. The points then serve as the basis for the control and calibration of the RTX real-time work. “Using RTX allows us to work faster and more accurately, both of which give us an important competitive edge,” says Waldrip.



march 2021

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