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| A '''common utility duct''', sometimes called a common utility conduit, is any structure--above, on, or below ground--which carries more than two types of ] lines. However, the phrase often refers specifically to ]s.<ref></ref> | A '''common utility duct''', sometimes called a common utility conduit, is any structure--above, on, or below ground--which carries more than two types of ] lines. However, the phrase often refers specifically to ]s.<ref></ref> | ||
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A common utility duct, sometimes called a common utility conduit, is any structure--above, on, or below ground--which carries more than two types of public utility lines. However, the phrase often refers specifically to underground tunnels.
Advantages of common utility ducts
The advantages of such facilities are the reduction of maintenance manholes, one-time relocation, and less excavation and repair. One of the greatest advantages is public safety. Common utility ducts prevent downed power lines and other utilities from blocking roads, thus speeding emergency access after major natural disasters like earthquakes, hurricanes, and tsunamis. They also allow rapid access to all utilities, without having to dig access trenches or resort to confused and often inaccurate utility maps.
Examples of common utility ducts
Many examples of common utility ducts are found in Japan, where government officials have sought ways to reduce the catastrophic effects of earthquakes in their tectonically active country. Their use, however, is not limited to that country and there are many examples of such common utility ducts. These include:
- Incorporated with Xinyi and Sonshan MRTRapid transit lines in Taipei, Taiwan
- Azabu-Hibiya Common Utility Duct in Tokyo, Japan
- Minatomirai District lines in Yokohama, Japan
- Poundbury Village in Duchy of Cornwall, Prince Charles' master planned community in England incorporates common utility ducts
See also
References
- Taipei Gov Website
- MAA Website
- BigEmpire.com Website
- Yokohama Landmark Building Website
- Mitchell, Sandy. "Prince Charles is not your typical radical." National Geographic. May 2006. Accessed online 9/14/06