ForConstructionPros.com

For example, you might use a GPS grade control system on a dozer for bulk earthmoving, then move it to a motor grader for finish work. "Then you swap that onto the box blade to be able to do the corners of a parking lot or for sub grade," says Highfill. "After the job is done, you can do landscaping in between the curbs or in the median of a freeway."

Shane Thomas Construction takes advantage of the portability of these systems. "I have taken it off [the box blade] and put it on my backhoe," says Thomas. "I put it on my dozer to rough in."

This eliminates any wasted time spent checking progress while rough grading. "You think you have it good, then you have to get off [the machine] and check it, especially if you are a small guy like me," says Thomas. "With the Topcon system, I just put it on there, dial in the section and I am done."

Ease of setup
Thomas says setup of the GPS grade control system is easy. Once it is hooked up, you simply need to calibrate it. "Basically, all you do is turn on the system," he says. "Then you have your grade setter set a benchmark."

For instance, Shane Thomas Construction often uses a manhole as a reference point. The elevation is painted on the manhole, then the box blade is lowered onto this known point and calibrated. "It takes about three minutes," says Thomas. "You dial it in, then just push a button."