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Chicago Tunnel Company
The Chicago Tunnel Company was the builder and operator of a narrow-gauge railway freight tunnel network under downtown Chicago, Illinois. This was regulated by the Interstate Commerce Commission as an interurban even though it operated entirely under central Chicago, did not carry passengers, and was entirely underground. It inspired the construction of the London Post Office Railway. History Initial tunnels The city of Chicago granted the newly formed Illinois Telephone and Telegraph company the rights to construct utility tunnels under the streets of Chicago in 1899 to carry its planned network of telephone cables. Initial plans for the tunnels called for filling them with phone cables, leaving a by passage for maintenance. When the city refused to permit manholes through which cable could be unreeled into the tunnels, the plans were changed to include rails for hauling cable spools through the tunnels.George W. Jackson, Scope, Extent and Construction of the Underg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illinois
Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its south. Of the fifty U.S. states, Illinois has the List of U.S. states and territories by GDP, fifth-largest gross domestic product (GDP), the List of U.S. states and territories by population, sixth-largest population, and the List of U.S. states and territories by area, 25th-most land area. Its capital city is Springfield, Illinois, Springfield in the center of the state, and the state's largest city is Chicago in the northeast. Present-day Illinois was inhabited by Indigenous peoples of the Americas#History, Indigenous cultures for thousands of years. The French were the first Europeans to arrive, settling near the Mississippi and Illinois River, Illinois rivers in the 17th century Illinois Country, as part of their sprawling colony of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Reserve Bank Of Chicago
The Federal Reserve Bank of Chicago (informally the Chicago Fed) is one of twelve Federal Reserve Banks that, along with the Federal Reserve Board of Governors, make up the Federal Reserve System, the United States' central bank. The Chicago Fed serves the Seventh District, which encompasses the northern portions of Illinois and Indiana, southern Wisconsin, the Lower Peninsula of Michigan, and the state of Iowa. In addition to participation in the formulation of monetary policy of the United States, monetary policy, each Reserve Bank supervises member banks and Bank holding company, bank holding companies, provides financial services to depository institutions and the U.S. government, and monitors economic conditions in its District. The Chicago Fed was established on May 18, 1914, when representatives from five Seventh District banks formally signed the Chicago Fed's organization certificate. The Bank officially opened for business on Monday, November 16, 1914. Responsibilities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merchandise Mart
The Merchandise Mart (or the Merch Mart, or the Mart) is a commercial building in Chicago Loop, downtown Chicago, Illinois. When it opened in 1930, it was the List of largest buildings, world's largest building, with of floor space. The Art Deco structure is at the junction of the Chicago River's branches. The building is a leading retailing and wholesale location, hosting 20,000 visitors and tenants daily in the late 2000s. Built by Marshall Field & Co. and later owned for over half a century by the Kennedy family, the Mart centralizes Chicago's wholesale goods industry by consolidating architectural and interior design vendors and trades under a single roof. It has become home to several other enterprises, including the Shops at the Mart, the Chicago campus of the Illinois Institute of Art – Chicago, Illinois Institute of Art, Motorola Mobility, the Grainger Technology Group branch of W._W._Grainger, W.W. Grainger, and the Chicago tech startup center 1871. It was sold in Ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Flood
The Chicago flood occurred on April 13, 1992, when repair work on a bridge spanning the Chicago River damaged the wall of an abandoned and disused utility tunnel beneath the river. The resulting breach flooded basements, facilities and the underground Chicago Pedway throughout the Chicago Loop with an estimated of water. The remediation lasted for weeks, and cost about $2 billion in 1992 dollars, equivalent to $ in . The legal battles lasted for several years, and disagreement over who was at fault persists to this day. Cause Rehabilitation work on the Kinzie Street Bridge crossing the Chicago River required new pilings. However, when the City of Chicago specified that the old pilings be extracted and replaced by the new ones, the Great Lakes Dredge and Dock Company reported back that the old pilings were too close to the bridge tender's house, preventing proper removal without risking damaging or destroying the house. The City of Chicago then gave permission to install the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Tribune
The ''Chicago Tribune'' is an American daily newspaper based in Chicago, Illinois, United States. Founded in 1847, it was formerly self-styled as the "World's Greatest Newspaper", a slogan from which its once integrated WGN (AM), WGN radio and WGN-TV, WGN television received their call letters. It is the most-read daily newspaper in the Chicago metropolitan area and the Great Lakes region, and the List of newspapers in the United States, sixth-largest newspaper by print circulation in the United States. In the 1850s, under Joseph Medill, the ''Chicago Tribune'' became closely associated with the Illinois politician Abraham Lincoln, and the then new Republican Party (United States), Republican Party's progressive wing. In the 20th century, under Medill's grandson 'Colonel' Robert R. McCormick, its reputation was that of a crusading newspaper with an outlook that promoted Conservatism in the United States, American conservatism and opposed the New Deal. Its reporting and commenta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grout
Grout is a dense substance that flows like a liquid yet hardens upon application, often used to fill gaps or to function as reinforcement in existing structures. Grout is generally a mixture of water, cement, and sand, and is frequently employed in efforts such as pressure grouting, embedding rebar in masonry walls, connecting sections of precast concrete, filling voids, and sealing joints such as those between tiles. Common uses for grout in the household include filling in tiles of shower floors and kitchen tiles. It is often color tinted when it has to be kept visible and sometimes includes fine gravel when being used to fill large spaces (such as the cores of concrete blocks). Unlike other structural pastes such as plaster or joint compound, correctly mixed and applied grout forms a water-resistant seal. Although both grout and its close relative, mortar, are applied as a thick suspension and harden over time, grout is distinguished by its low viscosity and lack of lime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolphin (structure)
A dolphin is a group of pilings arrayed together to serve variously as a protective hardpoint along a dock, in a waterway, or along a shore; as a means or point of stabilization of a dock, bridge, or similar structure; as a mooring point; and as a base for navigational aids. Structure Dolphins typically consist of a number of deep foundation, piles driven into the seabed or riverbed, and connected above the water level to provide a platform or fixing point. The piles can be untreated or pressure-treated timber piles, or steel or reinforced concrete piles. Smaller dolphins can have the piles drawn together with wire rope, but larger dolphins are typically fixed using a reinforced concrete capping or a structural steel frame. Access to a dolphin may be via a pedestrian bridge, particularly in the case of mooring dolphins, but is often by boat. Use As mooring point Dolphins are usually installed to provide a fixed structure when it would be impractical to extend the shore to p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinzie Street Bridge
The Kinzie Street Bridge is a single-leaf bascule bridge built in 1909 that spans the Chicago River in downtown Chicago, Illinois, United States. Incidents In April 1992, rehabilitation work on the pilings for the bridge damaged a freight tunnel located under the Chicago River. The tunnel breach eventually led to the Chicago flood, which flooded the Chicago Loop with an estimated of water. In August 2004, a Dave Matthews Band tour bus passing over the bridge Dave Matthews Band Chicago River incident, dumped 800 pounds of human waste through the open metal grate bridge deck into the Chicago River. The waste landed on an architecture tour cruise boat and passengers passing under the bridge at that time. References External links * Bridges in Chicago Truss bridges in the United States Road bridges in Illinois Bascule bridges in Illinois {{Chicago-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Rapid Transit Company
The Chicago Rapid Transit Company (CRT) was a privately owned firm providing rapid transit rail service in Chicago, Illinois, and several adjacent communities between 1924 and 1947. The CRT is one of the predecessors of the Chicago Transit Authority, Chicago's current mass transit operator. History Leading up to the consolidation of the 'L' companies into the CRT was decades of the Chicago Elevated Railways Collateral Trust (CER), an entity directly attributed to utilities magnate Samuel Insull. The CER laid the groundwork for the companies to become one, including financial agreements and simplification that allowed for free transfers between the various lines at the places where they shared facilities, such as at Loop elevated stations. The CER also resulted in the through-routing of trains from one company's line to another, enabling riders to take a single train from Ravenswood on the Northwestern 'L' to 35th Street on the South Side 'L'. The CRT was an amalgamation o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cut-and-cover
A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two Portal (architecture), portals common at each end, though there may be access and ventilation openings at various points along the length. A Pipeline transport, pipeline differs significantly from a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail transport, rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sanitary sewer, sewers or aqueduct (watercourse), aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevator
An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack. Elevators are used in agriculture and manufacturing to lift materials. There are various types, like chain and bucket elevators, grain augers, and hay elevators. Modern buildings often have elevators to ensure accessibility, especially where ramps aren't feasible. High-speed elevators are common in skyscrapers. Some elevators can even move horizontally. History Pre-industrial era The earliest known reference to an elevator is in the works of the Roman architect Vitruvius, who reported that Archimedes ( – ) built his first elevator probably in 236 BC. Sources from later periods mention elevators as cabs on a hemp rope, powered by people o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
