2,617 articles
Target value design
Target value design (TVD) is a construction management practice that steers design to a cost target set before design, adapting target costing from manufacturing; first applied in 2002 on the St. Olaf College Tostrud Fieldhouse.
Tarnowskie Góry Lead-Silver-Zinc Mine and its Underground Water Management System
Tarnowskie Góry Lead-Silver-Zinc Mine and its Underground Water Management System, a UNESCO World Heritage Site (2017) in Upper Silesia, Poland: historic Friedrichsgrube mine with over 50 km of main drainage tunnels, gravity adit drainage, and a water supply still serving the town.
Tarr Steps (United Kingdom)
Tarr Steps: a 55 m, 17-span clapper bridge of stone slabs on dry-stone piers crossing the River Barle in Exmoor, Somerset; the longest clapper bridge in Britain, probably built in the 15th-16th century, Grade I listed and scheduled, repeatedly rebuilt after floods.
Tarrant Regional Water District
Tarrant Regional Water District is a water district in North Texas that supplies wholesale raw water to more than 2.5 million people, including the Fort Worth area.
Tashan Weir (它山堰)
Tashan Weir (它山堰), also called Tuoshan Weir or Tuoshanyan, is a Tang dynasty stone weir on the Yinjiang River in Ningbo, Zhejiang, built in 833 AD to block saline tides and store fresh water.
Tasman Bridge
The Tasman Bridge is a concrete girder bridge carrying the Tasman Highway across the River Derwent in Hobart, Tasmania, opened in 1964 and rebuilt after the 1975 Lake Illawarra disaster.
Tasman Bridge disaster
The Tasman Bridge disaster was the 1975 collision of the bulk carrier Lake Illawarra with Hobart's Tasman Bridge, which collapsed spans, killed 12 people, and sank the ship.
Tauern Tunnel fire (1999)
The Tauern Tunnel fire was a 1999 crash and blaze in Austria's Tauern road tunnel that killed 12 people and closed the tunnel for three months.
Taunsa Barrage
Taunsa Barrage is a barrage across the River Indus in Punjab, Pakistan, completed in 1958 to divert water for irrigating about 2.35 million acres and to control floods.
Tay Bridge
The Tay Bridge, or Tay Railway Bridge, is a double-track railway bridge across the Firth of Tay between Dundee and Wormit, Scotland, opened on 20 June 1887.
Tay Bridge disaster
The Tay Bridge disaster, also called the Tay Rail Bridge disaster, was the 1879 storm collapse of the first Tay Rail Bridge at Dundee, Scotland, drowning 75 people.
Tees Transporter Bridge
The Tees Transporter Bridge, also known as the Middlesbrough Transporter Bridge, crosses the River Tees between Middlesbrough and Port Clarence on a suspended gondola. Opened in 1911, it closed in 2019.
Tehama-Colusa Canal
The Tehama-Colusa Canal is an irrigation canal in California's Central Valley Project, diverting Sacramento River water at Red Bluff to serve farms in Tehama, Glenn, Colusa, and Yolo counties.
Tehri Dam (टिहरी बांध)
Tehri Dam (टिहरी बांध) is a 260.5 m high earth and rockfill dam on the Bhagirathi river in Uttarakhand, India, part of a 2,400 MW power project.
Telford Medal
The Telford Medal is the highest award of the Institution of Civil Engineers for a published paper, created from Thomas Telford's bequest and first awarded in 1835.
Tellico Dam
Tellico Dam, also called the Tellico Project, is a Tennessee Valley Authority dam on the Little Tennessee River near Lenoir City, Tennessee, completed in 1979.
Ten Tunnels Deviation
The Ten Tunnels Deviation is a double-track section of the Main Western Railway in New South Wales, Australia, built between 1908 and 1910 to bypass the Great Zig Zag near Lithgow.
Tennessee–Tombigbee Waterway
The Tennessee–Tombigbee Waterway, often called the Tenn-Tom, is a 234-mile artificial waterway in Mississippi and Alabama connecting the Tennessee River to Mobile, opened in 1985.
Tertiary treatment
Tertiary treatment is the third major stage of wastewater treatment, applied after primary and secondary treatment to produce higher-quality effluent through filtration, disinfection, and nutrient removal.
Terzaghi's bearing capacity theory
Terzaghi's bearing capacity theory is a semi-empirical method, published by Karl Terzaghi in 1943, for computing the ultimate bearing capacity of a shallow foundation from the soil's cohesion, friction angle, and unit weight.
Terzaghi's principle of effective stress
Terzaghi's principle of effective stress states that in saturated soil, compression and shear strength depend only on effective stress, total stress minus pore water pressure, introduced by Karl Terzaghi in 1923.
Tesla valve
The Tesla valve, also called the valvular conduit, is a check valve with no moving parts, patented by Nikola Tesla in 1920, that resists reverse flow.
Teton Dam
Teton Dam was a Bureau of Reclamation earthfill dam on the Teton River in Idaho that collapsed during first filling on June 5, 1976, killing 11 people.
Thai Canal
The Thai Canal, also called the Kra Canal, is a long-proposed shipping canal across the Kra Isthmus in southern Thailand that has been studied since 1677 but never built.
Thames Barrier
The Thames Barrier, also known as the Thames flood barrier, is a movable flood barrier across the River Thames near Woolwich in east London, protecting central London from storm surges.
Thames Cable Tunnel
The Thames Cable Tunnel is a 1960s tunnel carrying 400 kV electricity cables under the River Thames between Tilbury in Essex and Gravesend in Kent.
Thames Gateway Water Treatment Works
Thames Gateway Water Treatment Works, also called the Thames Water Desalination Plant, is a desalination plant at Beckton in east London, opened in 2010 as the first large-scale desalination plant in the United Kingdom.
Thames Tideway Tunnel
The Thames Tideway Tunnel is a 25 km sewer tunnel beneath London, built to stop sewage spilling into the Thames and fully operational since February 2025.
Thames Tunnel
The Thames Tunnel is a tunnel beneath the River Thames in London connecting Rotherhithe and Wapping, built between 1825 and 1843 by Marc Brunel and his son Isambard Kingdom Brunel.
Thames Water
Thames Water, formally Thames Water Utilities Limited, is the UK's largest water and wastewater services provider, serving 16 million customers across London, the Thames Valley, and the Home Counties.