|
Hayden Bridge (Springfield, Oregon)
The Hayden RR Bridge, is a truss bridge located in Springfield, Oregon, spanning over the McKenzie River. The bridge initially served as a traditional railroad bridge, starting as part of the first transcontinental railroad in Utah, before being shipped to its current location to serve as part of the Marcola line, whose primary use was the distribution of lumber. It later closed down due to the closure of the area's lumbermills, until it was converted into a pedestrian bridge in 2019. It is one of the few remaining wrought-iron, Phoenixville bridges still standing, and the oldest intact bridge in the state of Oregon. Location Hayden Bridge is located in Springfield, Oregon, near the intersection of the Marcola, Old Mohawk, and Camp Creek roads. Its milepost was 649.50 on the Southern Pacific Railroad when it comprised part of the railroad during its use as a railroad bridge. The bridge spans the McKenzie river, where it runs parallel to a road bridge comprising part of Marcol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McKenzie River (Oregon)
The McKenzie River is a tributary of the Willamette River in western Oregon in the United States. It drains part of the Cascade Range east of Eugene and flows westward into the southernmost end of the Willamette Valley. It is named for Donald McKenzie, a Scottish Canadian fur trader who explored parts of the Pacific Northwest for the Pacific Fur Company in the early 19th century. As of the 21st century, six large dams have been built on the McKenzie and its tributaries."About the McKenzie Watershed" McKenzie Watershed Council. Retrieved January 9, 2010. Course The McKenzie River originates as the outflow of Clear Lake in the high[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heritage Documentation Programs
Heritage Documentation Programs (HDP) is a division of the U.S. National Park Service (NPS) responsible for administering the Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER), and Historic American Landscapes Survey (HALS). These programs were established to document historic places in the United States. Records consist of measured drawings, archival photographs, and written reports, and are archived in the Prints and Photographs Division of the Library of Congress. Historic American Buildings Survey In 1933, NPS established the Historic American Buildings Survey following a proposal by Charles E. Peterson, a young landscape architect in the agency. It was founded as a constructive make-work program for architects, draftsmen and photographers left jobless by the Great Depression. It was supported through the Historic Sites Act of 1935. Guided by field instructions from Washington, D.C., the first HABS recorders were tasked with documenti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hayden Bridge Top Sign
Hayden may refer to: Places Inhabited places in the United States *Hayden, Alabama *Hayden, Arizona *Hayden's Ferry, former name of Tempe, Arizona *Hayden, California, former name of Hayden Hill, California *Hayden, Colorado *Hayden, Idaho *Hayden Lake, Idaho *Hayden, Indiana *Hayden Island, Portland, Oregon, an island and neighborhood Geographic features in the United States *Hayden Butte or Tempe Butte, an andesite butte of volcanic origin in Tempe, Arizona *Hayden Creek (other) *Hayden Mountain (other) *Hayden Peak (Utah), a mountain in Utah *Hayden Valley, a large sub-alpine valley in Yellowstone National Park Other places *Hayden, Gloucestershire, a List of United Kingdom locations: Has-Hd, village in the UK People *Hayden (given name) *Hayden (surname) *Hayden (musician) (born 1971), a Canadian folk musician Other uses *Hayden (electronics company), a British guitar amplification manufacturer *Hayden Geological Survey of 1871, in northwestern Wyoming *Hayd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abutment
An abutment is the substructure at the ends of a bridge span or dam supporting its superstructure. Single-span bridges have abutments at each end which provide vertical and lateral support for the span, as well as acting as retaining walls to resist lateral movement of the earthen fill of the bridge approach. Multi-span bridges require piers to support ends of spans unsupported by abutments. Dam abutments are generally the sides of a valley or gorge, but may be artificial in order to support arch dams such as Kurobe Dam in Japan. The civil engineering term may also refer to the structure supporting one side of an arch An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it. Arches may be synonymous with vau ..., or masonry used to resist the lateral forces of a vault.Pevsner, N. (1970) ''Cornwall''; 2nd ed. Harmo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cast Iron
Cast iron is a class of iron– carbon alloys with a carbon content more than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its color when fractured: white cast iron has carbide impurities which allow cracks to pass straight through, grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks, and ductile cast iron has spherical graphite "nodules" which stop the crack from further progressing. Carbon (C), ranging from 1.8 to 4 wt%, and silicon (Si), 1–3 wt%, are the main alloying elements of cast iron. Iron alloys with lower carbon content are known as steel. Cast iron tends to be brittle, except for malleable cast irons. With its relatively low melting point, good fluidity, castability, excellent machinability, resistance to deformation and wear resistance, cast irons have become an engineering material with a wide range of applicatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Society Of Civil Engineers
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label previously known as Def American * American University, in Washington, D.C. Sports teams Soccer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Statically Indeterminate
In statics and structural mechanics, a structure is statically indeterminate when the static equilibrium equations force and moment equilibrium conditions are insufficient for determining the internal forces and reactions on that structure. Mathematics Based on Newton's laws of motion, the equilibrium equations available for a two-dimensional body are: : \sum \mathbf F = 0 : the vectorial sum of the forces acting on the body equals zero. This translates to: :: \sum \mathbf H = 0 : the sum of the horizontal components of the forces equals zero; :: \sum \mathbf V = 0 : the sum of the vertical components of forces equals zero; : \sum \mathbf M = 0 : the sum of the moments (about an arbitrary point) of all forces equals zero. In the beam construction on the right, the four unknown reactions are , , , and . The equilibrium equations are: : \begin \sum \mathbf V = 0 \quad & \implies \quad \mathbf V_A - \mathbf F_v + \mathbf V_B + \mathbf V_C = 0 \\ \sum \mathbf H = 0 \quad & \imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kalmbach Media
Kalmbach Media (formerly Kalmbach Publishing Co.) is an American publisher of books and magazines, many of them railroad-related, located in Waukesha, Wisconsin. History The company's first publication was ''The Model Railroader'', which began publication in the summer of 1933 with a cover date of January 1934. A press release announcing the magazine appeared in August 1933, but did not receive much interest. In 1940, business was good enough for Kalmbach to launch another magazine about railroads in general with the simple title of '' Trains Magazine''. From its first issue dated November 1940, it grew quickly from an initial circulation of just over 5,000. Kalmbach became exclusively a publisher when it discontinued its printing operations in 1973, opting to contract production from other printers. In 1985, Kalmbach purchased AstroMedia Corporation, adding its four magazines: ''Astronomy'', ''Deep Sky'', the children's science magazine ''Odyssey'' and ''Telescope Making' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trains (magazine)
''Trains'' is a monthly magazine about trains and railroads aimed at railroad enthusiasts and railroad industry employees. The magazine primarily covers railroad happenings in the United States and Canada, but has some articles on railroading elsewhere. It is among the 11 magazines published by Kalmbach Media, based in Waukesha, Wisconsin. It was founded as ''Trains'' in 1940 by publisher Al C. Kalmbach and editorial director Linn Westcott. From October 1951 to March 1954, the magazine was named ''Trains and Travel''. Jim Wrinn, a former reporter and editor at the ''Charlotte Observer ''The Charlotte Observer'' is an American English-language newspaper serving Charlotte, North Carolina, and its metro area. The Observer was founded in 1886. As of 2020, it has the second-largest circulation of any newspaper in the Carolinas. I ...'', served as editor from 2004 until his death in 2022. Carl A. Swanson succeeded him. Editors * Al C. Kalmbach, 1940–1948 * Willard V. Anderso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Institute Of Architects
The American Institute of Architects (AIA) is a professional organization for architects in the United States. Headquartered in Washington, D.C., the AIA offers education, government advocacy, community redevelopment, and public outreach to support the architecture profession and improve its public image. The AIA also works with other members of the design and construction community to help coordinate the building industry. The AIA is currently headed by Lakisha Ann Woods, CAE, as EVP/Chief Executive Officer and Dan Hart, FAIA, as 2022 AIA President. History The American Institute of Architects was founded in New York City in 1857 by a group of 13 architects to "promote the scientific and practical perfection of its members" and "elevate the standing of the profession." This initial group included Cornell University Architecture Professor Charles Babcock, Henry W. Cleaveland, Henry Dudley, Leopold Eidlitz, Edward Gardiner, Richard Morris Hunt, Detlef Lienau, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Northwest
The Pacific Northwest (sometimes Cascadia, or simply abbreviated as PNW) is a geographic region in western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though no official boundary exists, the most common conception includes the U.S. states of Oregon, Washington (state), Washington, and Idaho, and the Canadian province of British Columbia. Some broader conceptions reach north into Alaska and Yukon, south into northern California, and east into western Montana. Other conceptions may be limited to the coastal areas west of the Cascade Mountains, Cascade and Coast Mountains, Coast mountains. The variety of definitions can be attributed to partially overlapping commonalities of the region's history, culture, geography, society, ecosystems, and other factors. The Northwest Coast is the coastal region of the Pacific Northwest, and the Northwest Plateau (also commonly known as "British Columbia Interi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society For Industrial Archeology
The Society for Industrial Archeology (SIA) is a North American nonprofit organization dedicated to studying and preserving historic industrial sites, structures and equipment. It was founded in 1971 in Washington, D.C., and its members are primarily from the United States and Canada, although there is some crossover with similar industrial archaeology organizations in the United Kingdom. SIA's headquarters is currently located in the Department of Social Sciences at Michigan Technological University in Houghton, Michigan. In addition to the national organization, there are thirteen regional chapters throughout the United States. Activities Since its founding in October 1971, SIA members have gathered at an annual conference, which also serves as the annual business meeting required by its bylaws. The annual conference is typically held each spring. The Fall Tour, a second annual gathering usually held in September or October, began in 1972. Both annual events feature visits t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_Team.jpg "Click for more on -> Heritage Documentation Programs")
