Missouri river bottom south of Sioux City, IA | It’s always nice to have research data but here is real world experience. I was using IaRTN last May for vertical control on a big project. I soon realized our vertical control was not always meeting the job specs. Grade control was on a bulldozer blade using FMX with FieldLevel II and Intuicom modem. We spend a bunch of time checking out the equipment and finally ended up using a local RTK 900mhz base to get within the jobs vertical tolerance. It was a few weeks later that I got an email from IaRTN saying that sometimes their vertical precision during May was out of tolerance ranging from 3 to 7.8 inches. They also found the horizontal precision was out of tolerance of 2.4 inches. We were doing surface work so it was easy to check and/or correct. What happens to the guys that are laying tile if vertical would get that far off?
Tom N. |
Trimble fieldlevel 2 vs Intellislope by Guadiant
