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Burr Arch Truss
The Burr Arch Truss—or, simply, Burr Truss or Burr Arch—is a combination of an arch and a ''multiple kingpost'' truss design. It was invented in 1804 by Theodore Burr, patented on April 3, 1817, and used in bridges, usually covered bridges. Design The design principle behind the Burr arch truss is that the arch should be capable of bearing the entire load on the bridge while the truss keeps the bridge rigid. Even though the kingpost truss alone is capable of bearing a load, this was done because it is impossible to evenly balance a dynamic load crossing the bridge between the two parts. The opposite view is also held, based on computer models, that the truss performs the majority of the load bearing and the arch provides the stability. Either way, the combination of the arch and the truss provides a more stable bridge capable of supporting greater weight than either the arch or truss alone. Gallery The U.S. state of Indiana has a large collection of Burr Truss bridge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Covered Bridge
A covered bridge is a timber-truss bridge with a roof, decking, and siding, which in most covered bridges create an almost complete enclosure. The purpose of the covering is to protect the wooden structural members from the weather. Uncovered wooden bridges typically have a lifespan of only 20 years because of the effects of rain and sun, but a covered bridge could last over 100 years. In the United States, only about 1 in 10 survived the 20th century. The relatively small number of surviving bridges is due to deliberate replacement, neglect, and the high cost of restoration. European and North American truss bridges Typically, covered bridges are structures with longitudinal timber-trusses which form the bridge's backbone. Some were built as railway bridges, using very heavy timbers and doubled up lattice work. In Canada and the U.S., numerous timber covered bridges were built in the late 1700s to the late 1800s, reminiscent of earlier designs in Germany and Switzerland. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parke County, Indiana
Parke County lies in the western part of the U.S. state of Indiana along the Wabash River. The county was formed in 1821 out of a portion of Vigo County. According to the 2010 census, the population was 17,339, an increase of 0.6% from 17,241 in 2000. The county seat is Rockville. It has a population density of about . The county contains six incorporated towns and many unincorporated communities. It is divided into 13 townships which provide local services. Two U.S. Routes and five state highways pass through or into the county, along with one major railroad line. Parke County has 31 covered bridges and describes itself as the Covered Bridge Capital of the World. It is the site for the Parke County Covered Bridge Festival which has been held in October each year. As of 2020, Parke County is included in the Terre Haute, Indiana, Metropolitan Statistical Area. History This area had been occupied for thousands of years by succeeding cultures of indigenous peoples. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Inventions ...
The following articles cover the timeline of United States inventions: * Timeline of United States inventions (before 1890), before the turn of the century * Timeline of United States inventions (1890–1945), before World War II * Timeline of United States inventions (1946–1991), for the post-war era * Timeline of United States inventions (after 1991), after the Fall of the Soviet Union {{DEFAULTSORT:Timeline of United States Inventions United States inventions United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truss Bridges By Type
A truss is an assembly of ''members'' such as beams, connected by ''nodes'', that creates a rigid structure. In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". A "two-force member" is a structural component where force is applied to only two points. Although this rigorous definition allows the members to have any shape connected in any stable configuration, trusses typically comprise five or more triangular units constructed with straight members whose ends are connected at joints referred to as '' nodes''. In this typical context, external forces and reactions to those forces are considered to act only at the nodes and result in forces in the members that are either tensile or compressive. For straight members, moments (torques) are explicitly excluded because, and only because, all the joints in a truss are treated as revolutes, as is necessary for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burr Arch Deer's Mill CB, Sugar Creek, Montgomery County, IN 00002r
Burr may refer to: Places *Burr (crater), on the Jovian moon Callisto * Burr, Minnesota, an unincorporated community, United States *Burr, Missouri, an unincorporated community, United States * Burr, Nebraska, a village, United States *Burr, Saskatchewan, a hamlet in Canada * Burr, Texas, an unincorporated community, United States * Burr, West Virginia, an unincorporated community, United States *Burr Point, the easternmost point of mainland Ireland *Cape Burr, headland in South Australia *Mount Burr, South Australia, a town and mountain in South Australia People * Burr (surname) * Burr (given name) Arts and entertainment * ''Burr'' (novel), a book about Aaron Burr by Gore Vidal *Burr Redding, a fictional character in the television series ''Oz'' Other uses *Burr (edge), deformation of metal wherein a raised edge forms on a metal part which has been machined * Burr (cutter), a small cutter used in rotary tools for metalworking *Bur or burr, a spiky seed pod *Burl, burr in Briti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medora Covered Bridge
The Medora Covered Bridge was the longest covered bridge in the United states with the entire original historic truss still in place with some repairs but no structural changes. Measuring the clear span (abutment face to abutment face) of 431'10", the Medora Covered Bridge is the longest historic covered bridge in the United States. The roof length of 461' and the siding at the floor length of 459' are also the longest historic covered bridge measurements in the U.S.. Location The Medora Covered Bridge is located in Carr Township in Jackson County, Indiana, and crosses the East Fork of the White River running parallel to State Road 235. It is approximately one mile east of Medora and nine miles southwest of Brownstown. History The Medora Covered Bridge was built in 1875 by J.J. Daniels at a cost of $18,142.00 and took nine months to build. The bridge was covered to protect the truss from the elements. Before the bridge was built people crossed the river by ferry. ''Note: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mansfield Covered Bridge
The Mansfield Covered Bridge is a Double Burr Arch double span truss bridge located on Mansfield Road (historic) and Big Raccoon Creek in Mansfield southeast of Rockville in Parke County, Indiana. Built by Joseph J. Daniels in 1867 at a cost of $12,200. At it is the second longest covered bridge left in Parke County. This Historic Site rest on land provided by Luke Moody, of Parke County, Indiana and is open to the public all year. ''Note:'' This includes anSite map History Built for a time during which only wagons, horses and pedestrians used the bridge, the Mansfield Bridge has a load limit. The bridge had been used for State Route 59 and in one recorded story, three loaded oil trucks approached the bridge together. The first truck stalled out just before leaving the bridge, and all three trucks came to a stop on the two spans. There was no apparent damage to the strong structure. The arches combined with the truss are able to support more weight than needed so the limi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sim Smith Covered Bridge
The Sim Smith Covered Bridge is east of Montezuma, Indiana. The single span Burr Truss covered bridge structure was built by Joseph A. Britton in 1883. The bridge is long, wide, and high. ''Note:'' This includes Site map and Accompanying photographs. It was added to the National Register of Historic Places in 1978. Gallery File:Burr_Truss_P4230093_Sims_Smith.jpg , Detail of Burr Arch and King Posts File:Burr_Truss_P4230099_Sims_Smith.jpg, Detail of Abutment See also * List of Registered Historic Places in Indiana * Parke County Covered Bridges * Parke County Covered Bridge Festival The Parke County Covered Bridge Festival is a fall festival which takes place in nine communities in Parke County, Indiana, United States. It celebrates the county's 31 covered bridges, and is attended by more than 2 million people each year. It b ... References External links * Covered bridges on the National Register of Historic Places in Parke County, Indiana Bridges completed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indiana
Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th state on December 11, 1816. It is bordered by Lake Michigan to the northwest, Michigan to the north, Ohio to the east, the Ohio River and Kentucky to the south and southeast, and the Wabash River and Illinois to the west. Various indigenous peoples inhabited what would become Indiana for thousands of years, some of whom the U.S. government expelled between 1800 and 1836. Indiana received its name because the state was largely possessed by native tribes even after it was granted statehood. Since then, settlement patterns in Indiana have reflected regional cultural segmentation present in the Eastern United States; the state's northernmost tier was settled primarily by people from New England and New York, Central Indiana by migrants fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truss Bridge
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units. The connected elements (typically straight) may be stressed from tension, compression, or sometimes both in response to dynamic loads. The basic types of truss bridges shown in this article have simple designs which could be easily analyzed by 19th and early 20th-century engineers. A truss bridge is economical to construct because it uses materials efficiently. Design The nature of a truss allows the analysis of its structure using a few assumptions and the application of Newton's laws of motion according to the branch of physics known as statics. For purposes of analysis, trusses are assumed to be pin jointed where the straight components meet, meaning that taken alone, every joint on the structure is functionally considered to be a flexible joint as opposed to a rigid joint with strength to maintain its own shape, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ohio Department Of Transportation
The Ohio Department of Transportation (ODOT; ) is the administrative department of the Ohio state government responsible for developing and maintaining all state and U.S. roadways outside of municipalities and all Interstates except the Ohio Turnpike. In addition to highways, the department also helps develop public transportation and public aviation programs. ODOT is headquartered in Columbus, Ohio. Formerly, under the direction of Michael Massa, ODOT initiated a series of interstate-based Travel Information Centers, which were later transferred to local sectors. The Director of Transportation is part of the Governor's Cabinet. ODOT has divided the state into 12 regional districts to facilitate development. Each district is responsible for the planning, design, construction, and maintenance of the state and federal highways in its region. The department employs over 6,000 people and has an annual budget approaching $3 billion. It celebrated its 100th anniversary in 2005 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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