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Natchez Trace Parkway Bridge
The Natchez Trace Parkway Bridge is a concrete double arch bridge located in Williamson County, Tennessee, from the northern terminus of the Natchez Trace Parkway. It is long and carries the two-lane Natchez Trace Parkway over State Route 96 and a heavily wooded valley. Background The bridge, also known as the Natchez Trace Parkway Arches, is the first segmentally constructed concrete arch bridge in the United States. The arches comprise 122 hollow box segments precast in nearby Franklin, each of which was about long and weighed between 29 and 45 short tons. The deck consists of 196 precast post-tensioned trapezoidal box girder segments, each typically long. The sections atop the crown of the arch are deep. The foundations and piers of the bridge were cast in place. The long main span is symmetrical, while the long second arch is not, due to the slope of the valley at the southern end of the bridge. The bridge is rare in that it does not use spandrel columns to su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cathedral Arch
A cathedral arch is an arch used in bridge architecture. It consists of an arched structural system, wherein vertical load bearing occurs only at the crown, or peak of the arch. As applied to bridge design, cathedral arch bridges feature no intermediary spandrel column elements between the foundation abutments and the crown of the arch system, where the roadway superstructure is constrained to the substructure. The largest cathedral arch bridge in the world is the Galena Creek Bridge near Reno, Nevada Reno ( ) is a city in the northwest section of the U.S. state of Nevada, along the Nevada-California border, about north from Lake Tahoe, known as "The Biggest Little City in the World". Known for its casino and tourism industry, Reno is the .... References {{Reflist, refs= {{cite web, url=http://www.aspirebridge.org/pdfs/magazine/issue_13/galena_creek_win10.pdf, title=Nevada's Galena Creek Bridge, last=Durski, first=Brad F., date=Winter 2010, accessdate=2012-06-18, wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Williamson County, Tennessee
Williamson County is a county in the U.S. state of Tennessee. As of the 2020 United States census, the population was 247,726. The county seat is Franklin, and the county is located in Middle Tennessee. The county is named after Hugh Williamson, a North Carolina politician who signed the U.S. Constitution. Adjusted for relative cost of living, Williamson County is one of the wealthiest counties in the United States. Williamson County is part of the Nashville-Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area. In the 19th century, tobacco and hemp were cultivated here, and planters also raised blooded livestock, including horses and cattle. History Pre-Civil War The Tennessee General Assembly created Williamson County on October 26, 1799, from a portion of Davidson County. This territory had long been inhabited by at least five Native American cultures, including the Cherokee, Chickasaw, Choctaw, Creek, and Shawnee. It is home to two Mississippian-period mou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shoring
Shoring is the process of temporarily supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations. ''Shoring'' comes from ''shore'', a timber or metal prop. Shoring may be vertical, angled, or horizontal. Methods Buildings Raking shores In this method, inclined members called rakers are used to give temporary lateral support to an unsafe wall. One or more timbers slope between the face of the structure to be supported and the ground. The most effective support is given if the raker meets the wall at an angle of 60 to 70 degrees. A wall-plate is typically used to increase the area of support. Foundations Shoring is commonly used when installing the foundation of a building. A shoring system such as piles and lagging or shotcrete will support the surrounding loads until the underground levels of the building are constructed. Commonly used shoring equipment includes post shores, shoring beams, and timber jacks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges In Tennessee
A road is a linear way for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, the main function of roads is transportation. There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, thoroughfares, and local roads. The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths. Definitions Historically many roads were simply recognizable routes without any formal construction or some maintenance. The Organization for Economic Co-operation and Development (OECD) defines a road as "a line of communication (travelled way) using a stabilized base other than rails or air strips open to public traffic, primarily for the use of road motor vehicles running on their own wheels", w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Williamson County, Tennessee
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artistic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natchez Trace
The Natchez Trace, also known as the Old Natchez Trace, is a historic forest trail within the United States which extends roughly from Nashville, Tennessee, to Natchez, Mississippi, linking the Cumberland, Tennessee, and Mississippi rivers. The trail was created and used by Native Americans for centuries, and was later used by early European and American explorers, traders, and emigrants in the late 18th and early 19th centuries. European Americans founded inns, also known as "stands", along the Trace to serve food and lodging to travelers. As travel shifted to steamboats on the Mississippi and other rivers, most of these stands closed. Today, the path is commemorated by the Natchez Trace Parkway, which follows the approximate path of the Trace, as well as the related Natchez Trace Trail. Parts of the original trail are still accessible, and some segments are listed on the National Register of Historic Places. Origins Largely following a geologic ridge line, prehist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landmarks In Tennessee
A landmark is a recognizable natural or artificial feature used for navigation, a feature that stands out from its near environment and is often visible from long distances. In modern use, the term can also be applied to smaller structures or features, that have become local or national symbols. Etymology In old English the word ''landmearc'' (from ''land'' + ''mearc'' (mark)) was used to describe a boundary marker, an "object set up to mark the boundaries of a kingdom, estate, etc.". Starting from approx. 1560, this understanding of landmark was replaced by a more general one. A landmark became a "conspicuous object in a landscape". A ''landmark'' literally meant a geographic feature used by explorers and others to find their way back or through an area. For example, the Table Mountain near Cape Town, South Africa is used as the landmark to help sailors to navigate around southern tip of Africa during the Age of Exploration. Artificial structures are also sometimes built to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1993
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, and the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge (dating from the 13th century BC, in the Peloponnese) is one of the oldest arch bridges still in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cathedral Arch Bridges
A cathedral is a church (building), church that contains the ''cathedra'' () of a bishop, thus serving as the central church of a diocese, Annual conferences within Methodism, conference, or episcopate. Churches with the function of "cathedral" are usually specific to those Christian denominations with an episcopal hierarchy, such as the Catholic Church, Catholic, Eastern Orthodox Church, Eastern Orthodox, Anglicanism, Anglican, and some Lutheranism, Lutheran churches.New Standard Encyclopedia, 1998 by Standard Educational Corporation, Chicago, Illinois; page B-262c Church buildings embodying the functions of a cathedral first appeared in Italy, Gaul, Spain, and North Africa in the 4th century, but cathedrals did not become universal within the Western Catholic Church until the 12th century, by which time they had developed architectural forms, institutional structures, and legal identities distinct from parish churches, monastery, monastic churches, and episcopal residences. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
