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Landis Mill Covered Bridge
The Landis Mill Covered Bridge is a covered bridge that spans the Little Conestoga Creek in Lancaster County, Pennsylvania, United States. A county-owned and maintained bridge, its official designation is the Little Conestoga #1 Bridge. The bridge, built in 1873 by Elias McMellen, is today surrounded by a development, shopping center, and highways on the boundary of Lancaster, Pennsylvania. At , it is the shortest covered bridge in the county. The bridge has a single span, wooden, double pyramidal-shaped Burr-type trusses and multiple king post truss design with the addition of steel hanger rods. It is the only bridge in the county to use this design. The deck is made from oak planks. It is painted red, the traditional color of Lancaster County covered bridges, on both the inside and outside. Both portals to the bridge are painted in red with white trim. The bridge's WGCB Number is 38-36-16. In 1980 it was added to the National Register of Historic Places as structure number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
United States Dollar
The United States dollar ( symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar, divided it into 100 cents, and authorized the minting of coins denominated in dollars and cents. U.S. banknotes are issued in the form of Federal Reserve Notes, popularly called greenbacks due to their predominantly green color. The monetary policy of the United States is conducted by the Federal Reserve System, which acts as the nation's central bank. The U.S. dollar was originally defined under a bimetallic standard of (0.7735 troy ounces) fine silver or, from 1837, fine gold, or $20.67 per troy ounce. The Gold Standard Act of 1900 linked the dollar solely to gold. From 1934, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wooden Bridges In Pennsylvania
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs. In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients between the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or woodchips or fiber. Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper. More recently it emerged as a feedstock for the prod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges On The National Register Of Historic Places In Pennsylvania
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", which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Register Of Historic Places In Lancaster County, Pennsylvania
__NOTOC__ This is a list of the National Register of Historic Places listings in Lancaster County, Pennsylvania. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Lancaster County, Pennsylvania, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map. There are 209 properties and districts listed on the National Register in the county. The city of Lancaster is the location of 57 of these properties and districts; they are listed separately, while the 153 properties and districts in the other parts of the county are listed here. One property straddles the Lancaster city limits and appears on both lists. Another three sites are further designated as National Historic Landmarks. Yet another property was once listed but has been removed. Current listings Lancaster Exclusive of Lancaste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Covered Bridges On The National Register Of Historic Places In Pennsylvania
Cover or covers may refer to: Packaging * Another name for a lid * Cover (philately), generic term for envelope or package * Album cover, the front of the packaging * Book cover or magazine cover ** Book design ** Back cover copy, part of copywriting * CD and DVD cover, CD and DVD packaging * Smartphone cover, a mobile phone accessory that protects a mobile phone People * Cover (surname) Arts, entertainment, and media Music Albums ;Cover * ''Cover'' (Tom Verlaine album), 1984 * ''Cover'' (Joan as Policewoman album), 2009 ;Covered * ''Covered'' (Cold Chisel album), 2011 * ''Covered'' (Macy Gray album), 2012 * ''Covered'' (Robert Glasper album), 2015 ;Covers * ''Covers'' (Beni album), 2012 * ''Covers'' (Regine Velasquez album), 2004 * ''Covers'' (Placebo album), 2003 * ''Covers'' (Show of Hands album), 2000 * ''Covers'' (James Taylor album), 2008 * ''Covers'' (Fayray album), 2005 * ''Covers'' (Deftones album), 2011 * ''Covers'' (Cat Power album), 2022 * ''Cove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1873
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] |
Covered Bridges In Lancaster County, Pennsylvania
Cover or covers may refer to: Packaging * Another name for a lid * Cover (philately), generic term for envelope or package * Album cover, the front of the packaging * Book cover or magazine cover ** Book design ** Back cover copy, part of copywriting * CD and DVD cover, CD and DVD packaging * Smartphone cover, a mobile phone accessory that protects a mobile phone People * Cover (surname) Arts, entertainment, and media Music Albums ;Cover * ''Cover'' (Tom Verlaine album), 1984 * ''Cover'' (Joan as Policewoman album), 2009 ;Covered * ''Covered'' (Cold Chisel album), 2011 * ''Covered'' (Macy Gray album), 2012 * ''Covered'' (Robert Glasper album), 2015 ;Covers * ''Covers'' (Beni album), 2012 * ''Covers'' (Regine Velasquez album), 2004 * ''Covers'' (Placebo album), 2003 * ''Covers'' (Show of Hands album), 2000 * ''Covers'' (James Taylor album), 2008 * ''Covers'' (Fayray album), 2005 * ''Covers'' (Deftones album), 2011 * ''Covers'' (Cat Power album), 2022 * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Span (architecture)
Span is the distance between two intermediate supports for a structure, e.g. a beam (structure), beam or a bridge. A span can be closed by a solid beam or by a rope. The first kind is used for bridges, the second one for power lines, overhead telecommunication lines, some type of Antenna (radio), antennas or for aerial tramways. The span is a significant factor in finding the strength and size of a beam as it determines the maximum bending moment and Deflection (engineering), deflection. The maximum bending moment M_ and deflection \delta_in the pictured beam is found using: :M_ = \frac :\delta_ = \frac = \frac where :q = Uniformly distributed load :L = Length of the beam between two supports (span) :E = Modulus of elasticity :I = Area moment of inertia Note that the maximum bending moment and deflection occur midway between the two supports. From this it follows that if the span is doubled, the maximum moment (and with it the tensile stress, stress) will quadruple, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foot (length)
The foot ( feet), standard symbol: ft, is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, , is a customarily used alternative symbol. Since the International Yard and Pound Agreement of 1959, one foot is defined as 0.3048 meters exactly. In both customary and imperial units, one foot comprises 12 inches and one yard comprises three feet. Historically the "foot" was a part of many local systems of units, including the Greek, Roman, Chinese, French, and English systems. It varied in length from country to country, from city to city, and sometimes from trade to trade. Its length was usually between 250 mm and 335 mm and was generally, but not always, subdivided into 12 inches or 16 digits. The United States is the only industrialized nation that uses the international foot and the survey foot (a customary unit of length) in preference to the meter in its commercial, engineer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Park City Center
Park City Center is a shopping mall located in Lancaster, Pennsylvania, and is the largest enclosed shopping center in Lancaster County. It is situated at the intersection of U.S. Route 30 and Harrisburg Pike. The mall has over 170 stores and the anchor stores are Round 1 Entertainment, Kohl's, JCPenney, and Boscov's. There is one vacant anchor store that was once The Bon-Ton. With 170 stores, Park City Center is currently the fourth largest shopping mall in Pennsylvania. History The mall originally opened in 1971. The shape of the mall resembles a snowflake, with its stores occupying 8 corridors extending from the center. The roof in the center of the mall is a large white tent, and encloses the octagonal Center Court. The mall underwent a major renovation in 2008, which took 18 months and included updates to every part of the mall. During its early years Park City was also called "Mall of Four Seasons" because of the seasonal names given to the 4 corridors leading to each an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
