In areas where the cable was installed by boring, a technician using a locator receiver box walked above the pilot drill head that was already in the ground and got the directional drill rig operator within an inch of exactly where the drill head and utilities where located.
A technician, using a locator receiver box, walked above the pilot drill head that was already in the ground and got the directional drill rig operator within an inch of exactly where the drill head and utilities where located. The teams did not hit utilities when drilling this line in as they were able to alter alignment and depth easily on the fly. Once drilled, the drill rods were then retracted and the 2.62-inch con- duit was pulled through a bored line that was typically no longer than 500 feet.
much data the fiber cables will need to carry. The 432-count fiber optic cable is in one inner micro duct out of the seven that are available in the conduit the teams installed. Multiple variables — including the type and amount of data going across the fiber, the data speed requirements, and the sending equipment at the Dublin MDC — affect how much the AFL-432 can handle. Six inner micro ducts remain open and ready for the expansion of fiber if data transfer loads exceed current capacity or other needs develop. This project has multiple phases ahead of it, including deployment of roadside unit devices along U.S. Route 33 and at several signaled intersections in the cities of Marysville and Dublin. The current plan is for these devices to allow communications to occur from vehicle- to-vehicle through a digital short-range communication network with onboard units installed. The CAV transformation starting in Ohio will change the future of transportation; the U.S. 33 Smart Mobility Corridor will provide a model area to safely test CAV. The Phase 1 completion of the U.S. 33 Smart Mobility Corridor is the foundation for this change. SHANE CAMPBELL, PE , is a project manager at Gannett Fleming, a global infra- structure and engineering firm headquartered in Harrisburg, Pa., that provides progressive solutions for transportation, earth sciences and natural resources, geospatial, water, power, and facilities projects. Contact him at scampbell@ gfnet.com or at 614-794-9424.
There was at least one plow and as many as three drill rigs running per day to ensure the project stayed on schedule. In total, the teams bored one-third of the corridor and plowed the other two-thirds. Plowing saved money and time, so the team used the rule of thumb that “if we
can plow, we are plowing.” Building for the future
The project was completed on time and is set up for the next phase because of the innovative design process and the teams’ ability to work collaboratively to overcome hurdles. As the U.S. 33 Smart Mobility Corridor is one of the first of its kind and CAV is just coming to the marketplace, it’s hard to estimate how
TEAM FISHEL (www.teamfishel.com) is a utility engineering, construction, and network installation contractor headquartered in Columbus, Ohio. With 2,100+ teammates working out of 35 offices in 12 states, Team Fishel serves the telecommunications, broadband cable, electric power, natural gas, and low voltage technology industries. Contact Team Fishel at info@teamfishel.com or at 614-921-8602.
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csengineermag.com
march 2018
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