2,617 articles
Aerial Lift Bridge
The Aerial Lift Bridge, also called the Duluth Aerial Bridge, is a movable vertical lift bridge in Duluth, Minnesota, built in 1905 and converted to a lift bridge in 1930.
Aerial triangulation
Aerial triangulation, also called aerotriangulation, is a photogrammetric process that orients all images in an overlapping aerial block simultaneously against limited ground control, using bundle block adjustment.
Aerobic digestion
Aerobic digestion is a sludge stabilization method in which microorganisms decompose organic solids with oxygen supplied by aeration, valued at small and medium treatment works for simple operation.
Afghanistan–Uzbekistan Friendship Bridge
The Afghanistan–Uzbekistan Friendship Bridge is a road and rail bridge across the Amu Darya linking Termez with Hairatan, built by the Soviet Union and opened in 1982.
Aflaj Irrigation Systems of Oman
The Aflaj Irrigation Systems of Oman are five still functioning gravity-fed falaj irrigation channels in northern Oman, inscribed on the UNESCO World Heritage List in 2006 to represent the country's more than 3,000 aflaj.
Afsluitdijk
The Afsluitdijk, or Enclosure Dike, is a 32 km dam in the Netherlands separating the Wadden Sea from the IJsselmeer, built between 1927 and 1932.
Aftermath of the Gotthard Road Tunnel fire
The aftermath of the 2001 Gotthard Road Tunnel fire covers the official investigation into the disaster, the tunnel's two-month closure and repair, and the safety reforms that followed.
Aftermath of the Mont Blanc Tunnel fire
The Mont Blanc Tunnel fire aftermath documents the 1999 tragedy, which prompted a three-year closure, criminal convictions, and the creation of the EU Directive on tunnel safety.
Agua Negra Pass
Agua Negra Pass (Paso de Agua Negra) is a 4,780-meter Andean pass linking San Juan Province, Argentina, with Chile's Coquimbo Region, the highest Argentina–Chile border crossing.
Aguas Andinas
Aguas Andinas is a Chilean publicly traded water utility that produces, distributes, and treats water for the Metropolitan Region of Santiago, serving about 8.5 million people.
Aguas de Barcelona
Aguas de Barcelona, known as Agbar, is a Spanish water group founded in 1867 whose operating company supplies drinking water to 23 Barcelona-area municipalities, serving about 3 million people.
Águas de Portugal
Águas de Portugal (AdP) is the Portuguese state-owned holding company that develops and operates the country's bulk water supply and wastewater systems, created in 1993.
Ahmad Khalid Abdelrazaq
Ahmad Khalid Abdelrazaq is an American structural engineer who was chief technical director for the Burj Khalifa and was elected to the National Academy of Engineering in 2022.
AIA contract documents
AIA contract documents are standardized agreements and forms for the design and construction industry, published by the American Institute of Architects since 1888 and organized into numbered series by project delivery method.
Ain Diwar
Ain Diwar (عين ديوار), the Ain Diwar Bridge, a ruined Zangid stone bridge of 1146–1164 in far northeastern Syria, long mislabeled Roman; one pointed arch with zodiac carvings survives beside the shifted Tigris.
Aine M. Brazil
Aine M. Brazil is an Irish-born structural engineer and Vice Chairman of Thornton Tomasetti who led the design of Hudson Yards and Times Square towers, elected to the National Academy of Engineering in 2018.
Air gap (plumbing)
An air gap in plumbing is the open vertical space between a water outlet and a fixture's flood rim, which prevents backflow of contaminated water.
Air-entraining admixture
An air-entraining admixture is a surfactant-based chemical added to concrete during mixing to stabilize microscopic air bubbles that protect hardened concrete against freeze-thaw damage; air-entrained concrete is standard in freezing climates.
Airport Link, Brisbane
Airport Link, branded AirportlinkM7, is a 6.7 km twin-tunnel toll road in Brisbane's northern suburbs connecting the Inner City Bypass to Brisbane Airport, opened in July 2012.
AISC Steel Construction Manual
The AISC Steel Construction Manual is the American Institute of Steel Construction's reference book for the design, fabrication, and erection of structural steel buildings and bridges, first published in 1927.
Ajka alumina plant accident
The Ajka alumina plant accident was a dam failure at an alumina refinery in Ajka, Hungary, on 4 October 2010, whose red sludge flood killed ten people.
Akashi Kaikyō Bridge
The Akashi Kaikyō Bridge (明石海峡大橋), also known as the Pearl Bridge, is a suspension bridge crossing the Akashi Strait between Kobe and Awaji Island in Japan, opened in 1998.
Akhurian Reservoir
The Akhurian Reservoir, also known as the Arpaçay Dam, is an irrigation reservoir on the Akhurian River along the Armenia–Turkey border. It is Armenia's largest reservoir, and its water is shared equally between Armenia and Turkey.
Akosombo Dam
The Akosombo Dam, or Volta Dam, is a rock-fill embankment dam on the Volta River in Ghana, constructed 1961–1965, generating hydroelectric power and creating Lake Volta.
Alaköprü Dam
Alaköprü Dam (Alaköprü Barajı) is a rock-fill dam on the Dragon Creek in Anamur, Mersin Province, southern Turkey, supplying water to Northern Cyprus via an undersea pipeline since 2015.
Alaskan Way Viaduct
The Alaskan Way Viaduct was a 2.2-mile double-decked elevated highway carrying State Route 99 along Seattle's central waterfront, built in the 1950s, damaged by the 2001 Nisqually earthquake, and demolished in 2019.
Albarregas Roman bridge
The Albarregas Roman bridge is a Roman bridge in Mérida, Spain, built in the late 1st century BC to carry the Vía de la Plata road.
Albert A. Dorman
Albert A. Dorman (1926–2023) was an American civil engineer who founded, chaired, and served as first CEO of AECOM, and was the civil engineer of record for Disneyland.
Albert Bridge
Albert Bridge is a Grade II listed road bridge over the Thames in London linking Chelsea and Battersea, opened in 1873 and combining suspension and cable-stayed design.
Albert Canal
The Albert Canal is a 129 km canal in Belgium connecting the Port of Antwerp with Liège, opened in 1939 and named after King Albert I.