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Walnut Lane Bridge
The Walnut Lane Bridge is a concrete arch bridge located in Northwest Philadelphia that connects the Germantown and Roxborough neighborhoods across the Wissahickon Creek in Fairmount Park. While drivers may cross the bridge too quickly to notice, the view from underneath the bridge has inspired many artists and writers, such as Christopher Morley. The design was copied from Pont Adolphe in Luxembourg. The Walnut Lane Bridge was added to the National Register of Historic Places in 1988. Construction Construction began on July 5, 1906, and was completed on October 14, 1908. Over 40,000 tons of rubble concrete (containing a great amount of large stones, for greater shear strength) were poured into the falsework, which had been built from steel bents high and of timber, weighing about 900 tons. The bridge's six spans total . Very little use was made of reinforcing steel, which was scarce at the time. The roadway is wide, flanked by reinforced-concrete sidewalks and pre-cast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wissahickon Creek
Wissahickon Creek is a tributary of the Schuylkill River in Montgomery and Philadelphia Counties, Pennsylvania. Wissahickon Creek rises in Montgomery County, runs approximately 23 miles (37 km) passing through and dividing Northwest Philadelphia before emptying into the Schuylkill River at Philadelphia. Its watershed covers about . Much of the creek now runs through or next to parkland, with the last few miles running through a deep gorge. The beauty of this area attracted the attention of literary personages like Edgar Allan Poe and John Greenleaf Whittier. The gorge area is now part of Wissahickon Valley Park in Philadelphia, and the Wissahickon Valley is known as one of 600 National Natural Landmarks of the United States. The name of the creek comes from the Lenape word wiessahitkonk, for "catfish creek" or "stream of yellowish color". On the earliest map of this region of Pennsylvania, by Thomas Holme, the stream is called ''Whitpaine's creek'', after one of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falsework
Falsework consists of temporary structures used in construction to support a permanent structure until its construction is sufficiently advanced to support itself. For arches, this is specifically called centering. Falsework includes temporary support structures for formwork used to mold concreteHardie G.M. (1995) Building Construction: Principles, Practices, and Materials. New Jersey: Prentice Hall. (Pg 116, paragraph 1) in the construction of buildings, bridges, and elevated roadways. The British Standards of practice for falsework, BS 5975:2008, defines falsework as "Any temporary structure used to support a permanent structure while it is not self-supporting." History Falsework has been employed in bridge and viaduct construction since ancient times. The Romans were renowned for its use, as at the Limyra Bridge in Turkey. Until the turn of the 20th century almost all falsework was constructed from timber. To compensate for timber shortages in different regions and to rati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Center City, Philadelphia
Center City includes the central business district and central neighborhoods of Philadelphia. It comprises the area that made up the City of Philadelphia prior to the Act of Consolidation, 1854, which extended the city borders to be coterminous with Philadelphia County. Greater Center City (defined from Girard Avenue to Tasker Street) has grown into the second-most densely populated downtown area in the United States, after Midtown Manhattan in New York City, with an estimated 202,100 residents in 2020 and a population density of 26,284 per square mile. Geography Boundaries Center City is bounded by South Street to the south, the Delaware River to the east, the Schuylkill River to the west, and Vine Street to the north. The district occupies the old boundaries of the City of Philadelphia before the city was made coterminous with Philadelphia County in 1854. The Center City District, which has special powers of taxation, has a complicated, irregularly shaped boundary that inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University City, Philadelphia
University City is the easternmost portion of West Philadelphia, encompassing several Philadelphia universities. It is situated directly across the Schuylkill River from Center City, Philadelphia, Center City. The University of Pennsylvania was instrumental in coining the name "University City" as part of a 1950s urban renewal and gentrification effort. University City is also home to Drexel University and the Saint Joseph's University, University City campus of Saint Joseph's University. The eastern side of University City contains the Penn and Drexel campuses, several medical institutions, independent centers of scientific research, 30th Street Station, Cira Centre, and Cira Centre South. The western side contains Victorian and early 20th-century housing stock and is primarily residential. Demographics The University City neighborhood consists of 25,183 males and 25,783 females. The area population has grown 2.6% from 2000 to 2014 and 0.7% from 2010 to 2014. There are 32,9 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schuylkill River
The Schuylkill River ( , ) is a river running northwest to southeast in eastern Pennsylvania. The river was improved by navigations into the Schuylkill Canal, and several of its tributaries drain major parts of Pennsylvania's Coal Region. It flows for U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed April 1, 2011 from Pottsville to Philadelphia, where it joins the Delaware River as one of its largest tributaries. In 1682, William Penn chose the left bank of the confluence upon which he founded the planned city of Philadelphia on lands purchased from the native Delaware nation. It is a designated Pennsylvania Scenic River, and its whole length was once part of the Delaware people's southern territories. The river's watershed of about lies entirely within the state of Pennsylvania, the upper portions in the Ridge-and-valley Appalachian Mountains where the folding of the mountain ridges metamorphically modified bit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walnut Street Bridge (Philadelphia, Pennsylvania)
Walnut Street Bridge, located in Philadelphia, Pennsylvania, crosses the Schuylkill River between Center City and West Philadelphia. The bridge carries Walnut Street across the Schuylkill River. History Walnut Street Bridge was built originally in 1893. After falling into a state of disrepair in the late 20th century, it was rebuilt in 1990. In 2012, the bridge was adjusted again to become a 3-lane bridge with 12-feet-wide (3.7m) foot paths, and a bike lane. The original 1893 bridge was a concrete structure with three steel Pratt trusses mounted on four heavy oblong concrete abutments and piers. It was demolished in 1988, but its piers were used for the -wide 1991 span. See also *List of crossings of the Schuylkill River This is a list of bridges and other crossings of the Schuylkill River, from the Delaware River upstream to the source. All locations are in Pennsylvania. Crossings See also * * * References {{Reflist Schuylkill River The Schuylkill Ri ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Trust For Historic Preservation
The National Trust for Historic Preservation is a privately funded, nonprofit organization based in Washington, D.C., that works in the field of historic preservation in the United States. The member-supported organization was founded in 1949 by congressional charter to support the preservation of America’s diverse historic buildings, neighborhoods, and heritage through its programs, resources, and advocacy. Overview The National Trust for Historic Preservation aims to empower local preservationists by providing leadership to save and revitalize America's historic places, and by working on both national policies as well as local preservation campaigns through its network of field offices and preservation partners, including the National Park Service, State Historic Preservation Offices, and local preservation groups. The National Trust is headquartered in Washington, D.C., with field offices in Atlanta, Chicago, Houston, Denver, New York City, Los Angeles, San Francisco, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Historic Landmark
A National Historic Landmark (NHL) is a building, district, object, site, or structure that is officially recognized by the United States government for its outstanding historical significance. Only some 2,500 (~3%) of over 90,000 places listed on the country's National Register of Historic Places are recognized as National Historic Landmarks. A National Historic Landmark District may include contributing properties that are buildings, structures, sites or objects, and it may include non-contributing properties. Contributing properties may or may not also be separately listed. Creation of the program Prior to 1935, efforts to preserve cultural heritage of national importance were made by piecemeal efforts of the United States Congress. In 1935, Congress passed the Historic Sites Act, which authorized the Interior Secretary authority to formally record and organize historic properties, and to designate properties as having "national historical significance", and gave the Nation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cliveden (Benjamin Chew House)
Cliveden ( or ), also known as the Chew House, is a historic site owned by the National Trust for Historic Preservation, located in the Mount Airy neighborhood of Northwest Philadelphia. Built as a country house for attorney Benjamin Chew, Cliveden was completed in 1767 and was home to seven generations of the Chew family. Cliveden has long been famous as the site of the American Revolutionary War's Battle of Germantown in 1777 as well as for its Georgian architecture. New research is unearthing a more complicated history at Cliveden, which involves layers of significance, including the lives of those who were enslaved and in service to the Chew family. That information broadens the meaning of Cliveden as a preserved historic place, exploring themes and stories of American identity and freedom. Traces of the history of the Cliveden property and its occupants can be found throughout the five acre woody landscape. The Cliveden grounds are open for the community to enjoy as a pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waffles
A waffle is a dish made from leavened batter or dough that is cooked between two plates that are patterned to give a characteristic size, shape, and surface impression. There are many variations based on the type of waffle iron and recipe used. Waffles are eaten throughout the world, particularly in Belgium, which has over a dozen regional varieties. Waffles may be made fresh or simply heated after having been commercially cooked and frozen. Etymology The word ''waffle'' first appears in the English language in 1725: "Waffles. Take flower, cream..." It is directly derived from the Dutch , which itself derives from the Middle Dutch . While the Middle Dutch is first attested to at the end of the 13th century, it is preceded by the French in 1185; both from Frankish 'honeycomb' or 'cake'. Other spellings throughout modern and medieval Europe include waffe, wafre, wafer, wâfel, waufre, iauffe, gaufre, goffre, gauffre, wafe, waffel, wåfe, wāfel, wafe, vaffel, and våff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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