2,617 articles
Thames Water Ring Main
The Thames Water Ring Main is an 80 km deep tunnel loop beneath London, completed in 1994 to supply treated water to about 6 million people.
The Boring Company
The Boring Company is an American tunnel-construction company founded by Elon Musk that digs small-diameter tunnels and runs them as Loop transit systems with Tesla vehicles.
The Devil We Know
The Devil We Know is a 2018 American documentary directed by Stephanie Soechtig examining how DuPont's Parkersburg, West Virginia plant released the Teflon chemical C8 (PFOA) into drinking water, and residents' litigation.
The Forth Bridge
The Forth Bridge is a steel cantilever railway bridge linking Fife with Edinburgh across the Firth of Forth, opened in 1890 and a World Heritage Site since 2015.
The Four Lifts on the Canal du Centre and their Environs, La Louvière and Le Roeulx (Hainaut)
Four hydraulic boat lifts on the Canal du Centre, Hainaut, Belgium (Les quatre ascenseurs du canal du Centre), UNESCO World Heritage Site 1998; built 1888-1917 to Edwin Clark's design, the only such lifts worldwide still working in original condition.
The Grand Canal
The Grand Canal (京杭大运河) is China's Beijing-to-Zhejiang inland waterway, begun in the 5th century BC, unified under the Sui, over 2,000 km by the 13th century, a UNESCO World Heritage Site since 2014, still navigable.
The Iron Bridge
The Iron Bridge is a cast iron arch bridge over the River Severn in Shropshire, England, completed in 1779 as the world's first all cast iron bridge.
The Persian Qanat
The Persian qanat (kāriz) is a gravity-fed underground channel tapping alluvial aquifers in arid Iran; eleven working examples were inscribed by UNESCO in 2016, distinguishing the system from all other water-supply networks.
The Rolling Bridge
The Rolling Bridge is a movable footbridge at Paddington Basin in London that opens by curling into a circle. Designed by Heatherwick Studio, it was completed in 2004.
The Structural Engineer
The Structural Engineer is the flagship magazine of the Institution of Structural Engineers, published in London 11 times a year with technical guidance, case studies, and opinion pieces.
The Tokyo Toilet
The Tokyo Toilet, also called the Tokyo Toilet Project, is a design project that rebuilt 17 public toilets in Shibuya, Tokyo, by leading architects, gaining fame through Wim Wenders's 2023 film Perfect Days.
Thirlmere
Thirlmere is a reservoir in the Lake District, Cumbria, England, built between 1890 and 1894 by damming a natural lake to supply Manchester via Britain's longest gravity-fed aqueduct.
Thirlmere Aqueduct
The Thirlmere Aqueduct is a 96-mile gravity-fed water supply aqueduct built by Manchester Corporation between 1890 and 1925, carrying water from Thirlmere in the Lake District to Manchester.
Thomas Crapper
Thomas Crapper (1836–1910) was an English plumber who founded Thomas Crapper & Co in Chelsea, London, in 1861, holding nine plumbing patents and supplying the royal household.
Thomas Telford
Thomas Telford (1757–1834) was a Scottish civil engineer who built canals, roads, and bridges across Britain and served as first President of the Institution of Civil Engineers.
Thomas Wylde (clothier)
Thomas Wylde (died 1559) was an English clothier of Worcester who grew rich in the broadcloth trade, acquired the Commandery, and served as bailiff and Member of Parliament.
Thomas Zarro Scarangello
Thomas Zarro Scarangello is an American structural engineer, chairman and CEO of Thornton Tomasetti from 2008 to 2020, elected to the National Academy of Engineering in 2026.
Three Gorges Dam (三峡大坝)
The Three Gorges Dam (三峡大坝) is a concrete gravity dam at Sandouping on the Yangtze River in Hubei, China, built from 1994 to 2009 with the world's largest hydropower capacity.
Three Sisters (Pittsburgh)
The Three Sisters, also known as the Three Sisters Bridges, are three nearly identical self-anchored suspension bridges carrying Sixth, Seventh, and Ninth Streets over the Allegheny River in Pittsburgh, built 1924 to 1928.
Through arch bridge
A through arch bridge is an arch bridge in which the arches rise above the deck and the roadway passes between them, usually suspended from the arch ribs by hangers.
Tidal inlet
A tidal inlet is a narrow waterway cutting through a barrier island or spit, connecting the ocean to the bay or lagoon behind it and exchanging water with the tide.
Tied-arch bridge
The tied-arch bridge, also known as the bowstring arch bridge, carries arch thrust in tension through its deck, an idea Robert Stephenson used at Newcastle in 1849.
Tigris–Euphrates water disputes
The Tigris–Euphrates water disputes are long-running disagreements among Turkey, Syria, and Iraq over sharing the rivers' water, with crises since the 1970s and no binding trilateral agreement.
Tijuana River sewage spills
The Tijuana River sewage spills are recurring cross-border wastewater discharges from Tijuana, Mexico, that flow into the Pacific Ocean at Imperial Beach, California, closing beaches for years.
Tile drainage
Tile drainage is an agricultural method that removes excess water from fields through buried perforated pipes, historically clay tiles and today plastic tubing, lowering the water table.
Timber crib dam
A timber crib dam is a gravity dam built from interlocking timber cribs filled with stone or gravel, widely used in 19th-century North American logging.
Tipón
Tipón is an Inca archaeological park in the Huatanay River valley southeast of Cusco, Peru, whose canals, aqueducts, fountains, and terraces still carry water today.
Tishrin Dam (سد تشرين)
Tishrin Dam, also spelled Tishreen (سد تشرين), is a hydroelectric dam on the Euphrates River in Aleppo Governorate, Syria, completed in 1999 with a capacity of 630 MW.
Tocks Island Dam controversy
The Tocks Island Dam controversy was a two-decade dispute over a proposed Army Corps dam on the Delaware River that ended in 1976 with the project shelved.
Toilets in Japan
Toilets in Japan, or Japanese toilets, range from traditional squat styles to seated toilets with electronic warm-water bidet seats, a market led by the firm TOTO since 1980.