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Tufa Bridges
The Tufa Bridges are two bridges made of tufa stone located in Schenley Park in Pittsburgh, Pennsylvania. Built in 1908 by George W. Burke, the bridges currently serve as part of a footpath within the park. History The idea for the construction of the two bridges came from George Burke, who was the Superintendent of City Parks for the Department of Public Works. Burke had no prior experience in architecture, engineering, building, or designing, but rather he was a horticulturist and city official. Burke was a Pittsburgh native and entered into work with the City of Pittsburgh in 1890 as a park foreman. In 1903 the parks became a separate bureau of the Department of Public Works, and with that change Burke was hired as parks superintendent. From this position he was responsible for maintaining Phipps Conservatory and Schenley Park. Phipps Conservatory, which is also located in Schenley Park, was made possible through a gift from Henry Phipps Jr, and under Burke it became world f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schenley Park (Pittsburgh)
Schenley Park () is a large municipal park in Pittsburgh, Pennsylvania. It is located between the neighborhoods of Oakland, Greenfield, and Squirrel Hill. It is also listed on the National Register of Historic Places as a historic district. In 2011, the park was named one of "America's Coolest City Parks" by ''Travel + Leisure''. The park is made up of donated by Mary Schenley in 1889 and another that the city subsequently purchased from her. Another were acquired at a later date, bringing the park's total size to , and making it the second largest municipal park in Pittsburgh, behind Frick Park. The park borders the campuses of Carnegie Mellon University and the University of Pittsburgh, and technically Carnegie Mellon University is actually within Schenley Park. Facilities Schenley Park features a grand entrance, Schenley Plaza, and several miles of hiking trails and a large pond in Panther Hollow. Across from the Phipps Conservatory is Flagstaff Hill, a popular place t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moss
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hornworts. Mosses typically form dense green clumps or mats, often in damp or shady locations. The individual plants are usually composed of simple leaves that are generally only one cell thick, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients. Although some species have conducting tissues, these are generally poorly developed and structurally different from similar tissue found in vascular plants. Mosses do not have seeds and after fertilisation develop sporophytes with unbranched stalks topped with single capsules containing spores. They are typically tall, though some species are much larger. ''Dawsonia'', the tallest moss in the world, can grow to in height. There are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geologist
A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes Earth and other terrestrial planets, as well as the processes that shape them. Geologists usually study geology, earth science, or geophysics, although backgrounds in physics, chemistry, biology, and other sciences are also useful. Field research (field work) is an important component of geology, although many subdisciplines incorporate laboratory and digitalized work. Geologists can be classified in a larger group of scientists, called geoscientists. Geologists work in the energy and mining sectors searching for natural resources such as petroleum, natural gas, precious and base metals. They are also in the forefront of preventing and mitigating damage from natural hazards and disasters such as earthquakes, volcanoes, tsunamis and landslides. Their studies are used to warn the general public of the occurrence of these events. Geologists are also important contributors to climate ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinforced Concrete
Reinforced concrete (RC), also called reinforced cement concrete (RCC) and ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars ( rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion. Description Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and/or structural failure. Modern reinforced concrete can contain varied reinforcing materials made of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch Bridge
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today. History Possibly the oldest existing arch bridge is the Mycenaean Arkadiko Bridge in Greece from about 1300 BC. The stone corbel arch bridge is still used by the local populace. The well-preserved Hellenistic Eleutherna Bridge has a triangular corbel arch. The 4th century BC Rhodes Footbridge rests on an early voussoir arch. Although true arches were already known by the Etruscans and ancient Greeks, the Romans were – as with the vault and the dome – the first to fully realize the potential of arches for bridge construction. A list of Roman bridges compiled by the engineer Colin O'Connor featur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romanticism
Romanticism (also known as the Romantic movement or Romantic era) was an artistic, literary, musical, and intellectual movement that originated in Europe towards the end of the 18th century, and in most areas was at its peak in the approximate period from 1800 to 1850. Romanticism was characterized by its emphasis on emotion and individualism, clandestine literature, paganism, idealization of nature, suspicion of science and industrialization, and glorification of the past with a strong preference for the medieval rather than the classical. It was partly a reaction to the Industrial Revolution, the social and political norms of the Age of Enlightenment, and the scientific rationalization of nature. It was embodied most strongly in the visual arts, music, and literature, but had a major impact on historiography, education, chess, social sciences, and the natural sciences. It had a significant and complex effect on politics, with romantic thinkers influencing conservatism, libe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rustication (architecture)
Two different styles of rustication in the Palazzo Medici-Riccardi in Florence; smooth-faced above and rough-faced below.">Florence.html" ;"title="Palazzo Medici-Riccardi in Florence">Palazzo Medici-Riccardi in Florence; smooth-faced above and rough-faced below. Rustication is a range of masonry techniques used in classical architecture giving visible surfaces a finish texture that contrasts with smooth, squared-block masonry called ashlar. The visible face of each individual block is cut back around the edges to make its size and placing very clear. In addition the central part of the face of each block may be given a deliberately rough or patterned surface. Rusticated masonry is usually "dressed", or squared off neatly, on all sides of the stones except the face that will be visible when the stone is put in place. This is given wide joints that emphasize the edges of each block, by angling the edges ("channel-jointed"), or dropping them back a little. The main part of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victorian Era
In the history of the United Kingdom and the British Empire, the Victorian era was the period of Queen Victoria's reign, from 20 June 1837 until her death on 22 January 1901. The era followed the Georgian period and preceded the Edwardian period, and its later half overlaps with the first part of the '' Belle Époque'' era of Continental Europe. There was a strong religious drive for higher moral standards led by the nonconformist churches, such as the Methodists and the evangelical wing of the established Church of England. Ideologically, the Victorian era witnessed resistance to the rationalism that defined the Georgian period, and an increasing turn towards romanticism and even mysticism in religion, social values, and arts. This era saw a staggering amount of technological innovations that proved key to Britain's power and prosperity. Doctors started moving away from tradition and mysticism towards a science-based approach; medicine advanced thanks to the adoption ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichen
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( |
Henry Phipps Jr
Henry Phipps Jr. (September 27, 1839 – September 22, 1930) was an American entrepreneur known for his business relationship with Andrew Carnegie and involvement with the Carnegie Steel Company. He was also a successful real estate investor. After selling his stock in Carnegie Steel, he devoted a great deal of his time and money to philanthropic works. Early life Henry Phipps Jr. was born on September 27, 1839 in Philadelphia, Pennsylvania. His English parents, Henry Phipps, a shoemaker, and Hannah (née Franks), were married at Wolverhampton in 1824 and migrated to Philadelphia at some point after that, settling in Pittsburgh in 1845. Phipps was educated at public schools in Allegheny City, Pennsylvania. He had one sister, Amelia Phipps Walker (Mrs. John Walker; 1846-1887), and two brothers: William Henry Phipps (1825-1902), and John Phipps (1833-1860), who was also friends with Carnegie and who died young. Phipps’s oldest brother, William Henry Phipps, was born on 27 Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsburgh, Pennsylvania
Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania behind Philadelphia, and the List of United States cities by population, 68th-largest city in the U.S. with a population of 302,971 as of the 2020 United States census, 2020 census. The city anchors the Pittsburgh metropolitan area of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the Pennsylvania metropolitan areas, second-largest in Pennsylvania, and the List of metropolitan statistical areas, 27th-largest in the U.S. It is the principal city of the greater Pittsburgh–New Castle–Weirton combined statistical area that extends into Ohio and West Virginia. Pitts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phipps Conservatory And Botanical Gardens
Phipps Conservatory and Botanical Gardens is a botanical garden set in Schenley Park, Pittsburgh, Pennsylvania, United States. It is a City of Pittsburgh historic landmark and is listed on the National Register of Historic Places. The gardens were founded in 1893 by steel and real-estate magnate Henry Phipps Jr. as a gift to the City of Pittsburgh. Its purpose is to educate and entertain the people of Pittsburgh with formal gardens (Roman, English, etc.) and various species of exotic plants (palm trees, succulents, bonsai, orchids, etc.). Currently, the facilities house elaborate gardens within the fourteen room conservatory itself and on the adjoining grounds. In addition to its primary flora exhibits, the sophisticated glass and metalwork of the Lord & Burnham conservatory offers an interesting example of Victorian greenhouse architecture. Phipps is one of the "greenest" facilities in the world. The entrance pavilion of the Phipps Conservatory has silver-level LEED certificatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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