5,208 articles
Uniform Building Code
The Uniform Building Code (UBC) was a model building code published in California from 1927 to 1997, used mainly in the western United States and known for its seismic provisions.
Union Buildings
The Union Buildings (Afrikaans: Die Uniegebou) are the official seat of the government of South Africa, standing on Meintjeskop hill in Pretoria and housing The Presidency.
Union Canal (Scotland)
The Union Canal (Edinburgh and Glasgow Union Canal) is a 51 km lock-free contour canal from Lochrin Basin, Edinburgh, to the Falkirk Wheel; built 1818-1822 by Hugh Baird, closed in the 1960s, reopened in 2001.
Unisex public toilet
A unisex public toilet, also called a gender-neutral bathroom, is a public restroom for people of any sex or gender rather than for men or women.
Unit load method
The unit load method, or virtual work method, is a structural analysis technique for calculating the deflection or rotation at a chosen point of a structure.
Unit price contract
A unit price contract, also called an admeasurement or re-measurement contract, is a construction contract where the contractor is paid fixed unit rates for actual quantities of work completed.
Unité d'Habitation
The Unité d'Habitation, known locally as the Cité Radieuse, is a seventeen-storey reinforced-concrete apartment block in Marseille, France, designed by Le Corbusier as a prototype for postwar mass housing.
United Association
The United Association (UA) is a labor union founded in 1889 representing about 412,000 plumbers, pipefitters, sprinkler fitters, HVACR technicians, welders, and pipeliners across the United States and Canada.
United Brotherhood of Carpenters and Joiners of America
The United Brotherhood of Carpenters and Joiners of America (UBC) is a North American labor union representing carpenters and allied construction trades, founded in Chicago in 1881.
United States Bureau of Reclamation
The United States Bureau of Reclamation, founded in 1902, is a federal agency managing water in 17 western states and operating Hoover Dam and Grand Coulee Dam.
United States Capitol rotunda
The United States Capitol rotunda, also known as the Capitol Rotunda, is the domed circular room at the heart of the U.S. Capitol in Washington, D.C., completed in 1824.
United States Fleet Activities Yokosuka
United States Fleet Activities Yokosuka is a U.S. Navy base at the entrance of Tokyo Bay, Japan, home port of the Seventh Fleet's forward-deployed ships since 1945.
United Utilities
United Utilities is a British water and wastewater company supplying around 7 million people across the North West of England, privatized from North West Water in 1989.
Universal Beijing Resort
Universal Beijing Resort (北京环球度假区) is a theme park resort in Tongzhou District, Beijing, opened on September 20, 2021, as Universal's first park in China and its largest at the time.
Universal design
Universal design is the design of products and environments usable by all people without adaptation or specialized design, a concept coined by architect Ronald Mace at North Carolina State University.
University Link tunnel
The University Link tunnel, also known as U Link, is a 3.15-mile pair of bored light rail tunnels in Seattle carrying Sound Transit trains from downtown to the University of Washington, opened in 2016.
University of Santo Tomas Faculty of Engineering
The University of Santo Tomas Faculty of Engineering, founded in 1907, is the oldest engineering school in the Philippines and offers six ABET-accredited BS programs.
Unmanned aerial vehicle photogrammetric survey
An unmanned aerial vehicle photogrammetric survey is a drone mapping method that flies planned patterns over a site and processes overlapping photographs into orthomosaics, point clouds, and digital elevation models.
Upflow anaerobic sludge blanket digestion
Upflow anaerobic sludge blanket (UASB) digestion, invented by Gatze Lettinga in the Netherlands (1976, 1980), is a high-rate anaerobic wastewater treatment in which upward flow through self-granulating sludge (1–3 mm granules, 12–20 kg COD/m³·d) enables compact, low-cost treatment with methane recovery.
Uplift pressure
Uplift pressure is the upward water pressure that seeping water exerts within a dam and its foundation, a destabilizing force that dam stability analysis must include.
Upper Krishna Project
The Upper Krishna Project is a multi-stage irrigation and power project on the Krishna River in northern Karnataka, India, built around the Almatti and Narayanpur dams.
Upper Mississippi River 9-foot channel project
The Upper Mississippi River 9-foot channel project is a U.S. Army Corps of Engineers program, authorized in 1930, creating locks and dams for a 9-foot navigation channel.
Uppsala Cathedral
Uppsala Cathedral, also known as Uppsala domkyrka, is the Gothic brick cathedral of the Church of Sweden's archbishop, begun around 1270 and consecrated in 1435.
Ura Fons
Ura Fons, the divinized spring Ura (Fontaine d'Eure near Uzès), supplied Roman Nemausus (Nîmes) via the Pont du Gard aqueduct; attested by the cultores Urae fontis altar (CIL XII 3076) and Pompeius Pandus's nymphaeum.
Urban design
Urban design is the collaborative, multi-disciplinary process of shaping towns, cities, streets, and public spaces, recognized as a distinct discipline after Harvard's 1956 Urban Design Conference.
Urban flooding
Urban flooding is the inundation of land and property in built-up areas when intense rainfall, river overflow, or seawater overwhelms drainage; impermeable city surfaces speed runoff.
Urban Waste Water Treatment Directive
The Urban Waste Water Treatment Directive is a European Union directive requiring Member States to collect and treat urban wastewater before discharge, adopted in 1991.
Urquhart Castle
Urquhart Castle is a ruined medieval castle on a rocky promontory on the shore of Loch Ness, near Drumnadrochit, about 14 miles southwest of Inverness in the Scottish Highlands.
Ushnu
An ushnu, also spelled usnu, is an Inka ceremonial platform in a public plaza, used by the ruler, for liquid offerings, and for astronomy and urban planning.
Usonia
Usonia is a term coined by James Law and adopted by Frank Lloyd Wright for his distinctly American architectural vision and small, affordable housing designs from the mid-1930s.