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Enlarged Double Lock No. 23, Old Erie Canal
Enlarged Double Lock No. 23, Old Erie Canal is a historic Erie canal Lock (water transport), lock located at Rotterdam (town), New York, Rotterdam in Schenectady County, New York. It was built in 1841-1842 as part of the First Enlargement. It is built entirely of large cut limestone blocks, laid regular ashlar, and mortared with hydraulic cement. The Northeast lock chamber is long and wide; the Southwest lock chamber is long and 18 to wide; and the Center pier is long and wide. The Southwest lock chamber was expanded in 1889–1890. Lock 23 fell into disuse after the opening of the New York State Barge Canal in 1918. The lock chambers contain no water and the area is open as a local park. The site was reclaimed and stabilized by local volunteers starting in 1999. A replica of a batten, board and batten locktender's hut was constructed between 2000 and 2003 by students from the Union College Department of Civil Engineering. ''Note:'' This includes an''Accompanying eight photo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotterdam (town), New York
Rotterdam is a Administrative divisions of New York#Town, town in Schenectady County, New York, Schenectady County, New York (state), New York, United States. The population was 30,523 at the 2020 census. The town of Rotterdam is in the south-central part of the county. It was founded in 1661 by Dutch settlers, who named it after the city of Rotterdam in the Netherlands, where many immigrants last touched European grounds. The town borders the Administrative divisions of New York#City, city of Schenectady, New York, Schenectady. History Situated near the eastern end of New York State's Heritage Corridor at what is known as the "Gateway to the West", the town of Rotterdam is closely linked with the early development of Schenectady. At that time the present town of Rotterdam served as the outlying farmlands and wood lots for the settlers. With few exceptions, these settlers made their homes in the stockade in Schenectady but went to their farmlands during the daytime. The lands n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erie Canal
The Erie Canal is a historic canal in upstate New York that runs east-west between the Hudson River and Lake Erie. Completed in 1825, the canal was the first navigable waterway connecting the Atlantic Ocean to the Great Lakes, vastly reducing the costs of transporting people and goods across the Appalachians. In effect, the canal accelerated the settlement of the Great Lakes region, the westward expansion of the United States, and the economic ascendancy of New York State. It has been called "The Nation's First Superhighway." A canal from the Hudson to the Great Lakes was first proposed in the 1780s, but a formal survey was not conducted until 1808. The New York State Legislature authorized construction in 1817. Political opponents of the canal, and of its lead supporter New York Governor DeWitt Clinton, denigrated the project as "Clinton's Folly" and "Clinton's Big Ditch". Nonetheless, the canal saw quick success upon opening on October 26, 1825, with toll revenue covering the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lock (water Transport)
A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is the chamber itself (usually then called a caisson) that rises and falls. Locks are used to make a river more easily navigable, or to allow a canal to cross land that is not level. Later canals used more and larger locks to allow a more direct route to be taken. Pound lock A ''pound lock'' is most commonly used on canals and rivers today. A pound lock has a chamber with gates at both ends that control the level of water in the pound. In contrast, an earlier design with a single gate was known as a flash lock. Pound locks were first used in China during the Song Dynasty (960–1279 AD), having been pioneered by the Song politician and naval en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schenectady County, New York
Schenectady County () is a county in the U.S. state of New York. As of the 2020 census, the population was 158,061. The county seat is Schenectady. The name is from a Mohawk language word meaning "on the other side of the pine lands," a term that originally applied to Albany. Schenectady County is part of the Albany-Schenectady-Troy, NY Metropolitan Statistical Area, and is west of the confluence of the Mohawk with the Hudson River. It includes territory on the north and the south sides of the Mohawk River. History This area of the river valley was historically occupied by the Mohawk people, the easternmost of the Five Nations comprising the Iroquois Confederacy or ''Haudenosaunee''. They cultivated maize fields in the flats along the Mohawk River and had villages in the hills. European settlement started in the present-day county by Dutch colonists in the 17th century; the village of Schenectady was founded in 1661. The fur traders in Albany kept a monopoly and prohibited ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ashlar
Ashlar () is finely dressed (cut, worked) stone, either an individual stone that has been worked until squared, or a structure built from such stones. Ashlar is the finest stone masonry unit, generally rectangular cuboid, mentioned by Vitruvius as opus isodomum, or less frequently trapezoidal. Precisely cut "on all faces adjacent to those of other stones", ashlar is capable of very thin joints between blocks, and the visible face of the stone may be quarry-faced or feature a variety of treatments: tooled, smoothly polished or rendered with another material for decorative effect. One such decorative treatment consists of small grooves achieved by the application of a metal comb. Generally used only on softer stone ashlar, this decoration is known as "mason's drag". Ashlar is in contrast to rubble masonry, which employs irregularly shaped stones, sometimes minimally worked or selected for similar size, or both. Ashlar is related but distinct from other stone masonry that is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cement
A cement is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel ( aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Concrete is the most widely used material in existence and is behind only water as the planet's most-consumed resource. Cements used in construction are usually inorganic, often lime or calcium silicate based, which can be characterized as hydraulic or the less common non-hydraulic, depending on the ability of the cement to set in the presence of water (see hydraulic and non-hydraulic lime plaster). Hydraulic cements (e.g., Portland cement) set and become adhesive through a chemical reaction between the dry ingredients and water. The chemical reaction results in mineral hydrates that are not very water-soluble and so are quite durable in wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batten
A batten is most commonly a strip of solid material, historically wood but can also be of plastic, metal, or fiberglass. Battens are variously used in construction, sailing, and other fields. In the lighting industry, battens refer to linear light fittings. In the steel industry, battens used as furring may also be referred to as "top hats", in reference to the profile of the metal. Roofing ''Roofing battens'' or ''battening'', also called ''roofing lath'', are used to provide the fixing point for roofing materials such as shingles or tiles. The spacing of the battens on the trusses or rafters depend on the type of roofing material and are applied horizontally like purlins. Battens are also used in metal roofing to secure the sheets called a ''batten-seam roof'' and are covered with a ''batten roll joint''. Some roofs may use a grid of battens in both directions, known as a ''counter-batten system'', which improves ventilation. Roofing battens are most commonly made of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union College
Union College is a private liberal arts college in Schenectady, New York. Founded in 1795, it was the first institution of higher learning chartered by the New York State Board of Regents, and second in the state of New York, after Columbia College (formerly King's College). In the 19th century, it became known as the "Mother of Fraternities",Somers (2003), p. 304 as three of the earliest Greek letter societies were established there. The school was once referred to as one of the " Big Four" alongside Harvard University, Yale University and Princeton University, before the Civil War and a financial scandal led to its fall from grace and the top national rankings. Union began enrolling women in 1970, after 175 years as an all-male institution. The college offers a liberal arts curriculum across 21 academic departments, as well as opportunities for interdepartmental majors and self-designed organizing theme majors. It offers a wide array of courses in the humanities, social sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York State Office Of Parks, Recreation And Historic Preservation
The New York State Office of Parks, Recreation and Historic Preservation (NYS OPRHP) is a state agency within the New York State Executive Department Parks, Recreation and Historic Preservation Law § 3.03. "The office of parks, recreation and historic preservation is hereby continued in the executive department. .. charged with the operation of state parks and historic sites within the U.S. state of New York. As of 2014, the NYS OPRHP manages nearly of public lands and facilities, including 180 state parks and 35 historic sites, that are visited by over 78 million visitors each year. History The agency that would become the New York State Office of Parks, Recreation and Historic Preservation (NYS OPRHP) was created in 1970; however, the history of state parks and historic sites in New York stretches back to the latter part of the 19th century. Management of state-owned parks, and guidance for the entire state park system, was accomplished by various regional co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Register Of Historic Places
The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic value". A property listed in the National Register, or located within a National Register Historic District, may qualify for tax incentives derived from the total value of expenses incurred in preserving the property. The passage of the National Historic Preservation Act (NHPA) in 1966 established the National Register and the process for adding properties to it. Of the more than one and a half million properties on the National Register, 95,000 are listed individually. The remainder are contributing resources within historic districts. For most of its history, the National Register has been administered by the National Park Service (NPS), an agency within the U.S. Department of the Interior. Its goals are to help property owners and inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erie Canal Parks, Trails, And Historic Sites
Erie (; ) is a city on the south shore of Lake Erie and the county seat of Erie County, Pennsylvania, United States. Erie is the fifth largest city in Pennsylvania and the largest city in Northwestern Pennsylvania with a population of 94,831 at the 2020 census. The estimated population in 2021 had decreased to 93,928. The Erie metropolitan area, equivalent to all of Erie County, consists of 266,096 residents. The Erie-Meadville combined statistical area had a population of 369,331 at the 2010 census. Erie is roughly equidistant from Buffalo and Cleveland, each being about 100 miles (160 kilometers) away. Erie's manufacturing sector remains prominent in the local economy, though insurance, healthcare, higher education, technology, service industries, and tourism are emerging as significant economic drivers. As with the other Great Lakes port cities, Erie is accessible to the oceans via the Lake Ontario and St. Lawrence River network in Canada. The local climate is humid, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
