5,208 articles
Flooring
Flooring, also known as floor covering or floorboards, is the finished walking surface installed over a building's floor structure, in materials such as timber, tile, vinyl, and carpet.
Florence Baptistery
The Florence Baptistery, or Battistero di San Giovanni, is an octagonal Romanesque building facing Florence Cathedral, known for its marble cladding, medieval mosaics, and Ghiberti's Gates of Paradise.
Florence Cathedral
Florence Cathedral, also known as the Duomo di Santa Maria del Fiore, is the cathedral of Florence, Italy, begun in 1296 and crowned by Brunelleschi's dome.
Florence Knoll
Florence Knoll Bassett (1917–2019) was an American architect and furniture designer who, as president of Knoll, created the Knoll Planning Unit and defined the modern corporate interior.
Florida International University pedestrian bridge collapse
The Florida International University pedestrian bridge collapse killed six people in Miami on March 15, 2018, when a partially built bridge fell onto SW 8th Street.
Flow coefficient
The flow coefficient (Cv) measures a valve's hydraulic capacity, defined as the US gallons per minute of water at 60 °F passing through it at a 1 psi drop.
Flow net
A flow net is a graphical solution for two-dimensional steady flow through porous media, used in geotechnical engineering to compute seepage, pore pressures, and exit gradients.
Fluor Corporation
Fluor Corporation is an American multinational engineering, procurement, and construction company headquartered in Irving, Texas, founded in 1912 in Santa Ana, California, to build large industrial, energy, and government projects.
Fluoride toxicity
Fluoride toxicity, also known as fluoride poisoning, is the harm caused by excessive fluoride, chiefly from drinking water, leading to dental fluorosis, skeletal disease, and reduced childhood IQ.
Flush toilet
A flush toilet, or water closet, is a sanitation fixture that removes waste from a bowl by flushing it with water through a water-sealed trap into a drain.
Fly ash
Fly ash is the finely divided residue from burning powdered coal in power plants, used in concrete as a pozzolan that reacts with lime to form additional cementitious compounds.
Fly ash in concrete
Fly ash in concrete is the use of coal combustion ash as a partial replacement for Portland cement, improving concrete performance and lowering its carbon footprint.
Flying buttress
The flying buttress, also known as the arc-boutant, is an exterior arched support carrying vault thrust away from a wall to a freestanding pier, allowing thinner walls and large Gothic cathedral windows.
Foguang Temple
Foguang Temple (佛光寺) is a Buddhist temple on Mount Wutai in Shanxi, China, whose East Main Hall of 857 is the finest surviving Tang Dynasty timber building.
Folly
A folly, or architectural folly, is a building constructed chiefly for a landscape idea, association, or view rather than practical use, common in 18th-century English gardens and parks.
Folsom Dam
Folsom Dam is a 340-foot concrete gravity dam on the American River near Folsom, California, completed in 1956 to control floods and store water for Sacramento.
Folsom Lake
Folsom Lake is a reservoir on the American River northeast of Sacramento, California, created by Folsom Dam in 1956 for flood control, water storage, and recreation.
Fomento de Construcciones y Contratas
Fomento de Construcciones y Contratas (FCC) is a Spanish construction and services group in Madrid, working in environmental services, water, and infrastructure, controlled by Carlos Slim.
Fontainebleau Miami Beach
Fontainebleau Miami Beach is a luxury resort hotel designed by Morris Lapidus, opened in 1954 and listed on the National Register of Historic Places in 2008.
Fontana Dam
Fontana Dam is a 480-foot hydroelectric dam on the Little Tennessee River in western North Carolina, built by the Tennessee Valley Authority during World War II to power aluminum production.
Fontana dei Quattro Fiumi
The Fontana dei Quattro Fiumi, or Fountain of the Four Rivers, is a Baroque fountain by Bernini at the center of Piazza Navona in Rome.
Fontana dell'Acqua Felice
The Fontana dell'Acqua Felice, also called the Fountain of Moses, is a monumental fountain in Rome built in 1587 as the terminal of the Acqua Felice aqueduct.
Fontenelle Dam
Fontenelle Dam is an earthfill dam on the Green River in Wyoming, completed in 1964 and best known for a near-failure from seepage in 1965.
Footbridge
A footbridge, also called a pedestrian overpass or overcrossing, is a bridge that carries pedestrians, and sometimes cyclists, over roads, railways, or rivers without vehicular traffic.
Footbridge safety and failure patterns
Footbridge safety and failure patterns describe how pedestrian walking forces, at roughly 1.0–3.0 Hz, can resonate with footbridges, making vibration serviceability, not strength, the frequent governing design check.
Footbridges in China
Footbridges in China span two traditions: modern urban pedestrian overpasses and ancient covered timber bridges, with more than 3,000 timber corridor bridges (langqiao).
Footbridges in Japan
Footbridges in Japan are pedestrian bridges, about 11,235 nationwide, mostly built in the 1955 to 1973 high-growth era and now aging, with removal an active policy option.
Footbridges in the United Kingdom
Footbridges in the United Kingdom are bridges carrying pedestrians over roads, railways, or water. Britain's railway network alone has almost 2,400, most owned by Network Rail.
Forbidden City (紫禁城)
The Forbidden City (紫禁城) is the former imperial palace of the Ming and Qing dynasties in central Beijing, home to 24 emperors from 1420 until the monarchy ended in 1912.
Force method (structural analysis)
The force method, also called the flexibility method, is a classical structural analysis technique that finds forces in statically indeterminate structures by treating redundant forces as unknowns.