“Because we used Trimble PCS900 paving systems on the asphalt base, we not only ensured that we used the proper amount of HMA, but we also saved on concrete yields because the concrete use is a direct reflection of the thickness, quality and consistency of the asphalt,” Rico said. “Not having to use wire line, just for starters, saves a lot of labor, accidents and rewiring. Plus, there’s a higher level of confidence using the technology.”
Using the Trimble systems also allowed PRC to monitor and document its progress. The company checked its work every 10 feet to ensure quality.
“Our production is faster and our end-result quality is better,” MacKenzie said. “As long as the system and paver are running right and we maintain the confirmation checks, we can complete whole sections and not have to do any grinds.”
The project calls for placing anywhere from 10.5 to 12.5 inches of concrete. UDOT required PRC to stand behind the wearability of this heavily-traveled road. PRC will be issuing a four-year-warranty.
Communication is key
With a massive and complex project such as I-15 CORE, communication is critical. Errors not only can be costly, but they can eat up time.
“We’re using the Trimble Connected Community, which is a web-based service that allows us to communicate in real time with our people and machines on the site,” Rico said. “I can literally sit at a desk somewhere and make changes to the digital site plan and send it out to everyone on the site. It eliminates the cost and time of driving out to the jobsite and locating every rod, total station and machine to plug in a change.”
“I-15 CORE is a custom design project so there are changes and adjustments that need to be made at all times,” MacKenzie said. “It would be a nightmare to have to function without the Connected Community - when you think of manually trying to get changes out to 80-some GPS machine systems and data collectors on the site, we wouldn’t be as far along as we are.”
“My number one concern all along is safety,“ MacKenzie said. “The project has been very safe and being able to use the automation that Trimble provides helps keep workers off the grade and out of harm’s way.”
“Also,” Rico added, “when you look at the volume of information collected, processed and relied on every day, we wouldn’t be able to produce the level of quality as quickly as we have without the help of technology.”
Jeff Winke is a business and construction writer based in Milwaukee, Wis. He can be reached through www.jeffwinke.com.