|
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] |
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, floors, roofs, and piles. 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 high-rise projects to parking structures, K-12 schools, warehouses, mixed-use, and industrial building construction. By producing precast concrete in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multi-story Car Park
A multistorey car park (English in the Commonwealth of Nations, Commonwealth English) or parking garage (American English), also called a multistorey, parking building, parking structure, parkade (Canadian English, Canadian), parking ramp, parking deck, or indoor parking, is a building designed for car, motorcycle, and bicycle parking in which parking takes place on more than one floor or level. The first known multistorey facility was built in London in 1901 and the first underground parking was built in Barcelona in 1904 (see Multistorey car park#History, history). The term multistorey (or multistory) is almost never used in the United States, because almost all parking structures have multiple parking levels. Parking structures may be Heating, ventilation, and air conditioning, heated if they are enclosed. Design of parking structures can add considerable cost for planning new developments, with costs in the United States around $28,000 per space and $56,000 per space for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multi-storey Car Park
A multistorey car park (Commonwealth English) or parking garage (American English), also called a multistorey, parking building, parking structure, parkade (Canadian), parking ramp, parking deck, or indoor parking, is a building designed for car, motorcycle, and bicycle parking in which parking takes place on more than one floor or level. The first known multistorey facility was built in London in 1901 and the first underground parking was built in Barcelona in 1904 (see history). The term multistorey (or multistory) is almost never used in the United States, because almost all parking structures have multiple parking levels. Parking structures may be heated if they are enclosed. Design of parking structures can add considerable cost for planning new developments, with costs in the United States around $28,000 per space and $56,000 per space for underground (excluding the cost of land), and can be required by cities in parking mandates for new buildings. Some cities such ... [...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, floors, roofs, and piles. 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 high-rise projects to parking structures, K-12 schools, warehouses, mixed-use, and industrial building construction. By producing precast concrete in a controlled environment (typically referred to as a precast ... [...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 ... [...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 exposed structural systems of precast concrete, especially in long-span, "double-tee" structural elements, as well as enclosed courtyards, flat roofs, and floor-to-ceiling sliding glass doors. Personal life Gene Leedy was born on February 6, 1928, in Isaban, West Virginia to Cecil Hudgins Leedy and Ethyl Ferguson Leedy. Leedy's Father was a supervisor for a coal mining company, and Ethyl was a teacher in a one-room schoolhouse. The family moved to Gainesville, Florida, and Leedy's father opened a small restaurant. At 16 years old, Leedy attended the University of Florida in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
T-beam
A T-beam (or tee beam), used in construction, is a Structural engineering, load-bearing structure of reinforced concrete, wood or metal, with a capital 'T'-shaped Cross section (geometry), cross section. The top of the T-shaped cross section serves as a flange or compression member in resisting compression (physical), compressive Stress (physics), stresses. The web (vertical section) of the Beam (structure), 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, applicable for steel section. 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 compres ... [...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, a large landowner after Maine's independence as there was a Pittsfield incorporated already in Massachusetts. Pittsfield was noted for fine orchards, and became an agricultural trade center. Water power from the Sebasticook River attracted industry, and a gristmill and sawmill were built at the falls. Blacksmith shops and a carriage shop were established. In 1855, the Penobscot and Ke ... [...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 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 wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Department Of Transportation
The Texas Department of Transportation (TxDOT ) is a Texas state government agency responsible for construction and maintenance of the state's immense Texas state highway system, state highway system and the support of the state's maritime transport, maritime, aviation, rail transport, rail, and public transportation systems. TxDOT previously administered vehicle registration prior to the creation of the Texas Department of Motor Vehicles in November 2009. The agency has been headquartered in the Dewitt C. Greer State Highway Building, Dewitt C. Greer Building in Austin, Texas, Austin 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 Public Transportation. In 1986, the department started using "Don't Mess w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridge Deck
A deck is the surface of a bridge. A structural element of its superstructure A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstruct ..., it may be constructed of concrete, steel, grating, open grating, or wood. Sometimes the deck is covered by a track ballast, railroad bed and railroad track, track, asphalt concrete, or other form of pavement (material), 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 bridge, tied- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
