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A utility tunnel, utility corridor, or utilidor is a passage built underground or above ground to carry utility lines such as electricity, steam, water supply pipes, and sewer pipes. Communications utilities like fiber optics, cable television, and telephone cables are also sometimes carried.
An underground power line provides electrical power with underground cables. Compared to overhead power lines, underground lines have lower risk of starting a wildfire and reduce the risk of the electrical supply being interrupted by outages during high winds, thunderstorms or heavy snow or ice storms. An added benefit of undergrounding is the ...
If reused the tunnel will be the oldest used underground rail tunnel in the world and oldest section of any underground metro system. [78] [79] [80] 1832, Lime Street railway station tunnel, Liverpool. A two track rail tunnel, 1.811 km (1.125 mi) long was bored under the metropolis from Edge Hill in the east of the city to Lime Street in ...
Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE. "Say" for EG, used to mean "for example". More obscure clue words of this variety include: "Model" for T, referring to the Model T.
The system cost $300,000 to build with installation of the 100,000 feet (30,000 m) of underground conduits one of the most expensive parts of the project. Operating expenses exceeded income in the first two years and fire destroyed the plant in 1890. [ 21 ]
Bradford, Bradford West – Kirkstall substations (line partly underground) Yorkshire [12] 275 kV 53.82822°N 1.77895°W Brechfa Forest West onshore wind farm, Carmarthenshire [13] 2018 132 kV 51°59′00″N 04°09′50″W Burbo Bank offshore wind farm, Liverpool Bay – onshore substation, Denbighshire [14] 2008, 2017 220 kV 53.48°N 3.26°W ;
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Utility locating is the process of identifying and labeling public utility mains that are underground. These mains may include lines for telecommunication , electricity distribution , natural gas , cable television , fiber optics , traffic lights , street lights , storm drains , water mains , and wastewater pipes.