![]() ![]() Ĭross Bore: An intersection of one underground utility or structure by a second utility resulting in a direct contact between the utilities.Ī cross bore compromises the structural integrity of either the utility or the underground structure. You can find out more about Cross Bores at and. Some information courtesy of Peoples Natural Gas and the Cross Bore Safety Association. Be sure to contact PA One Call System before you go to the appointment for a drain cleaning to notify the utility companies of the drain cleaning to prevent possible contact with a cross bore. Collapsed sewer walls can also cause the rooter equipment to be misdirected outside of the sewer, bringing the equipment dangerously close to other buried utility lines. Mechanical purging equipment (rooters) have the ability to damage underground utility lines. If you have a blockage or are scheduled to have your sewer or septic pipe cleaned, make sure PA One Call System is contacted first (either by you or your sewer/septic cleaner) to notify the utility companies of the drain cleaning to prevent possible contact with a cross bore and to determine if an in-line camera inspection is necessary.Īlways assume that an obstruction involves a cross bore. Suggestions to help prevent damage because of a Cross Bore In the case of an electric line, serious injury could occur to the operator of the equipment. In the case of a gas line, natural gas could enter the sewer system, possibly causing an explosion. If a plumber unknowingly strikes one of these lines while cutting through a sewer blockage, the line could be broken. ![]() In rare cases, a gas, electric or communications line may cross through a sewer pipe. Since there is no open trench and the boring can be 100 feet or more underground, it is possible to intersect another underground line. Since this installation method does not involve digging a trench, it avoids damage to sidewalks, patios, landscaping, and existing utility lines marked after placing a one call notification to 811. When a new utility line (gas, electric, telephone, or cable television) needs to be installed it is not uncommon for the utility providers to dig horizontally underground (called directional boring). Intersecting buried communication cables can interrupt calls for emergency assistance. Intersecting buried electric lines or gas lines can cause injury or even death. These can be disruptive, costly and potentially very dangerous. This results in an intersection of the utilities, compromising the integrity of either or both utility or underground structure.Ĭross bores can occur between different types of underground utilities, including the intersection of a gas line or electric line and a sewer line or water line. ![]() A cross bore is the intersection of an existing underground utility or underground structure by a second utility installed using trenchless technology. ![]()
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