Trenchless Technology

DEC 2018

Trenchless Technology is the premier communications vehicle for the trenchless industry. Through our multiple platforms, readers receive insights into the trenchless industry, as well as keep connected to the latest news, products and projects.

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Page 43 of 67

44 T R E N C H L E S S T EC H N O LO GY D EC E M B E R 2018 W I T H T H E D E M A N D F O R FA S T E R DATA S P E E D S I N C R E A S I N G, more utility lines going from overhead to underground has led to a lot of underground congestion, weaving new lines through crowded utility right-of-ways. Because of this, horizontal directional drilling (HDD) crews need to spend just as much time planning as they do drilling . The old saying in the carpentry business is "measure twice, cut once." Underground utility contractors wanting to avoid costly and dangerous utility strikes should be following a similar mantra: " locate twice to avoid an accidental cut." Simply calling 811/ One Call and waiting for someone to come out to mark utilities isn't enough anymore. Before a crew starts drilling , they should first use their own locator to verify all the marked utilities, as well as anything that may not have been marked. After that, teams need to pothole to confirm depths of all utilities near the bore path, as well as any lines they will intersect along the way. Why Calling in a Locate Isn't Enough According to Tallahassee, Florida, utility contractor Tim Selvey with Bartell & Associates HDD crews that just pop the head in the ground and start drilling are taking a huge gamble. "The hidden dangers go well beyond just getting tangled up with a buried fiber-optic conduit," he said. "Anytime a crew is working around buried power or gas lines, they are putting the lives of everyone in the area at risk. And, everyone on a crew needs to understand that at the end of the day. When a utility strike happens, it doesn't matter who's at fault when the safety of people is involved. At minimum, a utility strike causes production delays, and unfortunately, in our line of work, that's usually the best-case scenario." The two HDD crews of Bartell & Associates perform a mixture of small diameter telecommunication, water, sewer and powerline bores in and around Tallahassee. Both crews use a Vermeer utility locator built by McLaughlin to verify USIC markings and then pothole any lines that will intersect a bore. "Locating services usually do a pretty good job of getting everything marked," said Selvey. "However, there is always a chance they missed something. Someone has an off day, or a non- By Jake Jeffords P R E V E N T I N G U T I L I T Y S T R I K E S I S E V E R Y O N E ' S R E S P O N S I B I L I T Y

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