5,208 articles
Traditional water sources of Persian antiquity
The traditional water sources of Persian antiquity, above all the qanat, or kārīz, supplied the Iranian plateau's settlements and agriculture from the first millennium BC onward.
Trafalgar House
Trafalgar House: name shared by several buildings, chiefly the Grade I Wiltshire country house (Standlynch, 1733, John James; renamed for Admiral Nelson) and a Grade II Winchester town house, school, and offices.
Traffic bollard
A traffic bollard is a short vertical post about 900 to 1200 mm tall that controls vehicle movement, protects buildings and pedestrians, and ranges from fixed posts to retractable, crash-rated designs.
Traité de stéréotomie
Traité de stéréotomie is a three-volume 1737–1739 treatise on cutting stone and timber for vaults by the French military engineer Amédée-François Frézier, probably the most important work on projection before Monge.
Trajan's Bridge
Trajan's Bridge was the first permanent bridge over the Lower Danube, built 103–105 AD by Trajan to supply his legions in Dacia, probably engineered by Apollodorus of Damascus.
Trans-Iranian Railway
The Trans-Iranian Railway (Persian: راهآهن سراسری ایران) is a 1,394-kilometer line linking the Caspian Sea to the Persian Gulf, built 1927 to 1938 under Reza Shah.
Transamerica Pyramid
The Transamerica Pyramid is an 853-foot, 48-story pyramid-shaped office tower at 600 Montgomery Street in San Francisco's Financial District, designed by William Pereira and opened in 1972 as the city's tallest building until 2018.
Transatlantic tunnel
The Transatlantic tunnel, or Atlantic tunnel, is a proposed never-built undersea rail link between New York and London, imagined since Jules Verne in 1895 but judged beyond current technology.
Transbay Tube
The Transbay Tube is an immersed tube tunnel that carries BART trains under San Francisco Bay between Oakland and San Francisco, the only rail crossing of the bay.
Transition curve
A transition curve, also known as a spiral easement or transition spiral, is a curve between a straight road or rail section and a circular curve where curvature changes gradually.
Translucent concrete
Translucent concrete, also called light-transmitting concrete, is a cement-based material with embedded optical fibers that pass light through it; the first block, LiTraCon, was made in 2003.
Transport Act 1947
The Transport Act 1947 was a United Kingdom law that nationalised most inland transport, placing railways, canals, ports, and road haulage under the British Transport Commission from 1948.
Transport Act 1962
The Transport Act 1962 is a UK Act that abolished the British Transport Commission, splitting its functions among new bodies including the British Railways Board and British Waterways Board.
Transporter bridge
A transporter bridge, also known as a ferry bridge or aerial transfer bridge, is a bridge with a fixed high frame and a suspended gondola that ferries people and vehicles across a river.
Trap (plumbing)
A plumbing trap, known in forms like the P-trap, S-bend, and U bend, is a curved drain pipe holding a water seal that blocks sewer gases from entering buildings.
Traverse (surveying)
A traverse is a surveying method that calculates the positions of successive stations from measured angles and distances, used to establish control networks where satellite positioning is unsuitable, such as indoors or under tree canopy.
Treasury of Atreus
The Treasury of Atreus, also known as the Tomb of Agamemnon, is the largest of the nine Mycenaean beehive tombs at Mycenae, Greece, built around the 13th century BC.
Tree house
A tree house, also called a tree fort, is a building built partly among the branches of one or more living trees, which serve as its primary structural support.
Trellick Tower
Trellick Tower is a 31-storey Brutalist council housing tower in North Kensington, London, designed by Ernő Goldfinger and completed in 1972 for the Greater London Council.
Trench
A trench is a narrow excavation in construction, deeper than it is wide and no wider than 15 feet, dug to install pipes, cables, conduits, and drainage.
Trench dredging and foundations for immersed tube tunnels
Trench dredging and foundations for immersed tube tunnels cover dredging the trench to profile and supporting the elements on screeded gravel beds, pumped sand, grout, or piles.
Trenčin castle
Trenčín Castle (Trenčiansky hrad), a medieval royal castle on a rock above Trenčín, Slovakia; seat of Matúš Čák, Lord of the Váh and Tatras; 80 m well, 1790 fire, museum since 1905 donation.
Trestle bridge
A trestle bridge is a bridge supported by bents or towers, often carrying a series of short spans; it was the workhorse of 19th- and early 20th-century railroad building.
Triaxial shear test
The triaxial shear test, or triaxial compression test, is a laboratory test measuring the shear strength of a soil specimen under confining pressure, used in foundation design.
Triborough Bridge
The Triborough Bridge, officially the Robert F. Kennedy Bridge, is a complex of bridges and viaducts linking Manhattan, Queens, and the Bronx in New York City.
Trigonometric levelling
Trigonometric leveling is a surveying method that determines the difference in elevation between two points from a vertical angle and a distance, used in variable terrain where fewer instrument setups are needed.
Trihalomethane
Trihalomethanes (THMs) are halogen-substituted single-carbon compounds of the form CHX₃, formed when drinking water is chlorinated and regulated in the United States as a group of four compounds at 80 µg/L.
Trilateration
Trilateration is a positioning method that determines an unknown location by measuring distances to three or more known reference points rather than angles, and underpins satellite navigation.
Trimbakeshwar Temple (त्र्यंबकेश्वर शिव मंदिर)
Trimbakeshwar Temple (त्र्यंबकेश्वर शिव मंदिर), also called Trimbakeshwar Jyotirlinga, is a Shiva temple in Trimbak near Nashik, Maharashtra, one of the twelve Jyotirlingas, at the Godavari's source below Brahmagiri hill, built in black stone under Peshwa Balaji Bajirao.
Trinity Church, Boston
Trinity Church, Boston is an Episcopal church at Copley Square, designed by Henry Hobson Richardson and built 1872 to 1877 as the prototype of Richardsonian Romanesque.