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Double-tee
A double tee or double-T beam is a load-bearing structure that resembles two T-beams connected to each other side by side. The strong bond of the flange (horizontal section) and the two webs (vertical members, also known as stems) creates a structure that is capable of withstanding high loads while having a long span. The typical sizes of double tees are up to for flange width, up to for web depth, and up to or more for span length. Double tees are pre-manufactured from prestressed concrete which allows construction time to be shortened. History The developments of double tee were started in the 1950s by two independent initiatives, one by Leap Associates founded by Harry Edwards in Florida, and the other by Prestressed Concrete of Colorado. They designed the wings to expand the structural channel in order to cover more area at a lower cost. In 1951, Harry Edwards and Paul Zia designed a wide prestressed double tee section. Non-prestressed double tees were constructed in Miami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-tee Roof
A double tee or double-T beam is a load-bearing structure that resembles two T-beams connected to each other side by side. The strong bond of the flange (horizontal section) and the two webs (vertical members, also known as stems) creates a structure that is capable of withstanding high loads while having a long span. The typical sizes of double tees are up to for flange width, up to for web depth, and up to or more for span length. Double tees are pre-manufactured from prestressed concrete which allows construction time to be shortened. History The developments of double tee were started in the 1950s by two independent initiatives, one by Leap Associates founded by Harry Edwards in Florida, and the other by Prestressed Concrete of Colorado. They designed the wings to expand the structural channel in order to cover more area at a lower cost. In 1951, Harry Edwards and Paul Zia designed a wide prestressed double tee section. Non-prestressed double tees were constructed in Miami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precast Concrete
Precast concrete is a construction product produced by casting concrete in a reusable molding (process), mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast beam (structure), beams, and wall panels for tilt up construction. In contrast, cast-in-place concrete is poured into site-specific forms and cured on site. Recently lightweight expanded polystyrene foam is being used as the cores of precast wall panels, saving weight and increasing thermal insulation. Precast stone is distinguished from precast concrete by the finer construction aggregate, aggregate used in the mixture, so the result approaches the natural product. Overview Precast concrete is employed in both interior and exterior applications, from highway, bridge, and hi-rise projects to tilt-up building construction. By producing precast concrete in a controlled environment (typically referred to as a precast plant), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multi-story Car Park
A multistorey car park (British and Singapore English) or parking garage (American English), also called a multistory, parking building, parking structure, parkade (mainly Canadian), parking ramp, parking deck or indoor parking, is a building designed for car, motorcycle & bicycle parking and where there are a number of floors or levels on which parking takes place. It is essentially an indoor, stacked car park. The first known multistory facility was built in London in 1901, and the first underground parking was built in Barcelona in 1904. (See History, below.) The term multistory is almost never used in the US, since parking structures are almost all multiple levels. Parking structures may be heated if they are enclosed. Design of parking structures can add considerable cost for planning new developments, and can be mandated by cities in new building parking requirements. Some cities such as London have abolished previously enacted minimum parking requirements. Minimum p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multi-storey Car Park
A multistorey car park (British and Singapore English) or parking garage (American English), also called a multistory, parking building, parking structure, parkade (mainly Canadian), parking ramp, parking deck or indoor parking, is a building designed for car, motorcycle & bicycle parking and where there are a number of floors or levels on which parking takes place. It is essentially an indoor, stacked car park. The first known multistory facility was built in London in 1901, and the first underground parking was built in Barcelona in 1904. (See History, below.) The term multistory is almost never used in the US, since parking structures are almost all multiple levels. Parking structures may be heated if they are enclosed. Design of parking structures can add considerable cost for planning new developments, and can be mandated by cities in new building parking requirements. Some cities such as London have abolished previously enacted minimum parking requirements. Minimum p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precast Parking Structure
Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast beams, and wall panels for tilt up construction. In contrast, cast-in-place concrete is poured into site-specific forms and cured on site. Recently lightweight expanded polystyrene foam is being used as the cores of precast wall panels, saving weight and increasing thermal insulation. Precast stone is distinguished from precast concrete by the finer aggregate used in the mixture, so the result approaches the natural product. Overview Precast concrete is employed in both interior and exterior applications, from highway, bridge, and hi-rise projects to tilt-up building construction. By producing precast concrete in a controlled environment (typically referred to as a precast plant), the precast concrete is afforded the opportunity to proper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid Bridge Replacement
Rapid bridge replacement or accelerated bridge construction (ABC) is a technique that allows bridges to be replaced with minimum disruption to traffic. The replacement bridge is constructed on a site near the bridge to be replaced. When it is completed, the old bridge is cut away and removed using self-propelled modular transporters (SPMTs). Then the SPMTs lift the new bridge, transfer it to the work site and put it in place. Often the highway or railroad carried by the bridge is closed for just one weekend. Conventional techniques typically replace half a bridge at a time, with all highway traffic redirected under the other bridge half, often for a year or more, while construction progresses. Accelerated bridge construction (ABC) alternatives consist of ABC components and ABC techniques. Components can be categorized into prefabricated bridge elements (e.g. beams, bridge decks, footings, columns, pier caps, abutments etc.) or prefabricated bridge systems (e.g. bridge modules with s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene Leedy
Gene Leedy (February 6, 1928 – November 24, 2018) was an American architect based in Winter Haven, Florida. He was a pioneer of the modern movement in Florida and later a founder of the Sarasota School of Architecture, whose members included Paul Rudolph, Victor Lundy, and others. After beginning his career in Sarasota, Leedy moved his practice to Winter Haven in 1954. He is best known for his bold use of precast concrete, especially in long-span, "double-tee" structural elements. Personal life Gene Leedy was born to Cecil Hudgins Leedy and Ethyl Ferguson Leedy on February 6, 1928 in Isaban, West Virginia. Cecil was a supervisor for a coal mining company, and Ethyl taught in a one-room schoolhouse. The family eventually moved to Gainesville, Florida, where Cecil opened a small restaurant. At the University of Florida in Gainesville, Gene later studied architecture. On July 20, 1950, in Arlington, Virginia, he married Kathryn "Bebe" Hoge, of Tampa, Florida. The couple settled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
T-beam
A T-beam (or tee beam), used in construction, is a load-bearing structure of reinforced concrete, wood or metal, with a -shaped cross section. The top of the -shaped cross section serves as a flange or compression member in resisting compressive stresses. The web (vertical section) of the beam below the compression flange serves to resist shear stress. When used for highway bridges the beam incorporates reinforcing bars in the bottom of the beam to resist the tensile stresses which occur during bending. The T-beam has a big disadvantage compared to an I-beam (with shape) because it has no bottom flange with which to deal with tensile forces. One way to make a T-beam more efficient structurally is to use an inverted T-beam with a floor slab or bridge deck joining the tops of the beams. Done properly, the slab acts as the compression flange. History A T-beam is a structural element able to withstand large loads by resistance in the beam or by internal reinforcements. In some r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsfield, Maine
Pittsfield is a town in Somerset County, Maine, United States. The population was 3,908 at the 2020 census. Pittsfield is home to the Maine Central Institute, a semi-private boarding school, and the annual Central Maine Egg Festival. History The area was part of the Kennebec Purchase. First called Plymouth Gore, it was settled in 1794 by Moses Martin and his family from Norridgewock. In 1815, the town was organized as the Plantation of Sebasticook, but was incorporated on June 18, 1819, as Warsaw after Warsaw, Poland. In 1824, the name was changed to Pittsfield after William Pitts of Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ..., a large landowner after Maine's independence as there was a Pittsfield, Massachusetts, Pittsfield incorporated already in Massachusetts. P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canaan, Maine
Canaan is a town in Somerset County, Maine, United States. The population was 2,193 at the 2020 census. Geography According to the United States Census Bureau, the town has a total area of , of which, of it is land and is water. Demographics 2010 census As of the census of 2010, there were 2,275 people, 901 households, and 637 families living in the town. The population density was . There were 1,105 housing units at an average density of . The racial makeup of the town was 97.1% White, 0.1% African American, 0.8% Native American, 0.1% Asian, 0.3% Pacific Islander, 0.1% from other races, and 1.5% from two or more races. Hispanic or Latino of any race were 0.6% of the population. There were 901 households, of which 34.6% had children under the age of 18 living with them, 52.3% were married couples living together, 11.9% had a female householder with no husband present, 6.5% had a male householder with no wife present, and 29.3% were non-families. 21.8% of all households w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Department Of Transportation
The Texas Department of Transportation (TxDOT ) is a government agency in the American state of Texas. Though the public face of the agency is generally associated with the construction and maintenance of the state's immense state highway system, the agency is also responsible for overseeing aviation, rail, and public transportation systems in the state. At one time, TxDOT also administered vehicle registration; but this function transferred to the Texas Department of Motor Vehicles, a state agency which began operations in November 2009. The agency has been headquartered in the Dewitt C. Greer Building at 125 East 11th Street in Downtown Austin, Texas, since 1933. History The Texas Legislature created the Texas Highway Department in 1916 to administer federal highway construction and maintenance. In 1975, its responsibilities increased when the agency merged with the Texas Mass Transportation Commission, resulting in the formation of the State Department of Highways and Pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridge Deck
A deck is the surface of a bridge. A structural element of its superstructure, it may be constructed of concrete, steel, open grating, or wood. Sometimes the deck is covered by a railroad bed and track, asphalt concrete, or other form of pavement for ease of vehicle crossing. A concrete deck may be an integral part of the bridge structure (T-beam or double tee structure) or it may be supported with I-beams or steel girders. When a bridge deck is installed in a through truss, it is sometimes called a floor system. A suspended bridge deck will be suspended from the main structural elements on a suspension or arch bridge. On some bridges, such as a tied-arch or a cable-stayed, the deck is a primary structural element, carrying tension or compression to support the span. A deck bridge is one in which the deck itself is the main structural element, itself carrying the roadway. Contrast to a truss bridge which may carry a deck on the top chords or bottom chords of a structural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
