A common utility duct, sometimes called a common utility conduit, is any structure - above, on, or below ground - that carries more than two types of public utility lines. However, the phrase often refers specifically to underground tunnels.^[1] A public utility is a company that maintains the infrastructure for a public service. ...

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. Image:Manhole Cover 800x650. ... Excavation is the best-known and most commonly used technique within the science of archaeology. ... This is an article about the modern meaning of the term public safety. ... Power Line is a neoconservative blog run by three lawyers: John H. Hinderaker (Hindrocket), Scott W. Johnson (The Big Trunk) and Paul Mirengoff (Deacon). Power Line covers political and social issues from a conservative viewpoint. ... A road ascends a mountainside using hairpin bends in the French Alps. ... Look up Emergency in Wiktionary, the free dictionary An emergency is a situation that poses an immediate threat to human life or serious damage to property. ... A natural disaster is the consequence of the combination of a natural hazard (a physical event e. ... An earthquake is a phenomenon that results from and is powered by the sudden release of stored energy in the crust that radiates seismic waves. ... This article is about weather phenomena. ... The tsunami that struck Malé in the Maldives on December 26, 2004. ... A map is a simplified depiction of a space which highlights relations between components (objects, regions) of that space. ...

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: Bridge across the Álfagjá rift valley in southwest Iceland, the boundary of the Eurasian and North American continental tectonic plates. ...

• Incorporated with Xinyi^[2] and Sonshan MRTRapid transit lines in Taipei, Taiwan
• Azabu-Hibiya Common Utility Duct in Tokyo, Japan^[3]
• Minatomirai District lines in Yokohama, Japan^[4]
• Poundbury Village in Duchy of Cornwall, Prince Charles' master planned community in England incorporates common utility ducts^[5]
• "Utilidors" in Disney theme parks

A rapid transit, underground, subway, tube, elevated, or metro(politan) system is a railway system, usually in an urban area, with a high capacity and frequency of service, and grade separation from other traffic. ... Alternative meaning: Taipei County City nickname: the City of Azaleas Capital District Xinyi Area  - Total  - % water Ranked 16 of 25 271. ... Tokyo (東京; Tōkyō, lit. ... For the town of Yokohama in Aomori Prefecture, see Yokohama, Aomori. ... View of Poundbury, Dorset. ... The banner of the Duchy of Cornwall. ... Prince Charles may refer to: Prince Charles, Prince of Wales, current heir-apparent to the British throne Any of the previous British royals named Charles, Prince of Wales The former Belgian regent, Prince Charles of Belgium This is a disambiguation page — a navigational aid which lists other pages that... Development built according to a plan that includes commercial buildings, educational facilities, homes and community facilities. ... Motto: (French for God and my right) Anthem: Multiple unofficial anthems Capital London Largest city London Official language(s) English (de facto) Government Constitutional monarchy  - Queen Queen Elizabeth II  - Prime Minister Tony Blair MP Unification    - by Athelstan AD 927  Area    - Total 130,395 km² (1st in UK)   50,346 sq...

See also

• District heating
• Electricity distribution
• Public utility
• Tunnel
• Utility tunnel
• Empire City Subway

District heating accumulator tower and workshops on the Churchill Gardens Estate, Pimlico, London. ... The examples and perspective in this article or section may not represent a worldwide view. ... A public utility is a company that maintains the infrastructure for a public service. ... A disused railway tunnel now converted to pedestrian and bicycle use, near Houyet, Belgium A tunnel is an underground passage. ... This article belongs in one or more categories. ...

References

1. ^ Taipei Gov Website
2. ^ MAA Website
3. ^ BigEmpire.com Website
4. ^ Yokohama Landmark Building Website
5. ^ Mitchell, Sandy. "Prince Charles is not your typical radical." National Geographic. May 2006. [1] Accessed online 9/14/06