3d Technology Simplifies Concrete Paving Operations 3 From 8

“Like most contractors, we have been using various GPS and 3D technologies through the years for grading and earthwork,” says Chuck Niederriter, COO.

“That naturally” progressed up through to paving, where we can use the same CAD files.

“We use 3D systems on mainline pavers and we also found it was very attractive on our ramp machines,” says Niederriter. “we use Gunter & Zimmerman’s 600 model for ramps, and the 3D is a huge benefit because the string lines are really difficult to work around due to the tight confines. Also, the accuracy of doing tight curves and super elevations with that robotic system is much more accurate.”

Smoothness was initially a concern for Golden Triangle Construction.

“That is probably why we didn’t jump into it at first,” says Niederriter.

“I was skeptical if I was going to get the smoothness that we need. Pennsylvania and West Virginia are very strict on ride specifications.

It turns out it is easier to get smoothness.

It took out most of the human error and gave us more room to work.”

The biggest concern with 3D paving is the expense when used in mainline paving applications.

“You need a lot of work for it because these guns (total stations) are $35,000 a piece,” says Niederriter.

“You need five guns and then the system that goes on the paver.

You get upwards of $300,000 pretty quick just with the grade control.”

Several total stations need to be set up in the path of the paving machine during mainline paving.

“You have to buy at least four guns to run the machine,” says Niederriter.

“Then you need one to use as a checker.

So a person is constantly moving guns to keep up with the paver.