Technology
GPS changing the construction landscape by Libby Tucker
January 19, 2006. Portland Daily Journal of Commerce
In the next decade, global positioning system technology will be just like a laser is on a job site now, said Alan Park, owner of Vancouver's Division 2 Services, in a presentation to the National Utility Contractor's Association Tuesday night, with the technology on its way to becoming the rule, rather than the exception.
GPS, which uses an array of satellites to measure the exact position of a location on the ground, provides instant surface and volume data for stake-free grading and excavation on a job site, saving contractors valuable time and money.
You can stand anywhere on the job site, and it will tell you what the cut/fill is, said Steve Ike, GPS products manager of PPI Group, which sells the Topcon brand GPS system. GPS has been available for use on job sites for about 10 years, said Park, but the technology has only recently seen wider adoption among contractors. Rapid improvements in computing have made units smaller, more portable and job-site friendly, he said.
The availability of additional satellite networks also provides greater accuracy in the tools' measurements, Ike said. And contractors can use the improved systems on sites smaller than 30 acres, which wasn't possible with earlier models, said Matthew Gebarowski, president of Dirt Logic, a Portland company that specializes in GPS modeling and takeoffs for engineers and contractors.
It's an essential tool for tight tolerance grading, said Craig Bauld of Rain Country Construction, an Eagle Creek firm. Bauld upgraded his system two months ago from a local positioning use station to a box that feeds information to the grader from a global satellite system. We can grade within the thickness of a quarter inch over an entire 17-acre area - that's very tight.
With an initial investment of about $80,000 for a state of the art system, Bauld expects the purchase to pay off within a short time. Many contractors and industry representatives believe that GPS technology will become an essential tool as more companies adopt the technology. And with what organizers said was record attendance at the NUCA meeting, interest in GPS technology could receive a boost among Portland-area contractors who have not yet adopted it.
It's a great technology, said T.J. Landis, owner of Landis and Landis Construction. Landis purchased the GPS system for work on a one-mile stretch of boardwalk that included placing 160 concrete pier blocks every 10 feet among a maze of trees. We knew the GPS would be perfect for this type of job, because of the intricacies of the survey involved, he said. The equipment cost more up front, Landis said. But we figured to have a surveyor come out would have cost an extra four to five thousand dollars, and it saved us about three or four days.
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