2,617 articles
Vertical lift gate
A vertical lift gate is a flat hydraulic gate that moves straight up and down to control water flow through spillways, outlet works, and navigation locks.
Vertical-lift bridge
A vertical-lift bridge is a movable bridge whose horizontal span rises straight up between two towers, counterweighted so small motors lift spans over 1,000 tons.
Viaduct
A viaduct is a long bridge made of a series of short spans on multiple piers, carrying a road or railway across a valley or other extended low-lying obstacle.
Vibration absorber
A vibration absorber, also called a tuned mass damper, is a small spring-mass system tuned to counteract a structure's resonance, first patented by Hermann Frahm in 1911.
Vibro-compaction
Vibro-compaction, also called vibroflotation, is a deep ground improvement technique that densifies loose, clean sands with a depth vibrator and water jets, first tested in Germany between 1937 and 1939.
Victoria Bridge (Montreal)
Victoria Bridge (French: pont Victoria) is a road and rail bridge crossing the Saint Lawrence River between Montreal and Saint-Lambert, completed in 1859 as the longest railway bridge in the world.
Victoria Dam (Sri Lanka)
Victoria Dam is a doubly curved concrete arch dam on the Mahaweli River at Theldeniya, central Sri Lanka, completed in 1985 as the largest concrete dam in the country.
Vidyasagar Setu (বিদ্যাসাগর সেতু)
Vidyasagar Setu (বিদ্যাসাগর সেতু), also called the Second Hooghly Bridge, is a cable-stayed toll bridge over the Hooghly River linking Kolkata and Howrah, India, opened in 1992.
Vierendeel truss
A Vierendeel truss is a truss-like frame with parallel chords joined only by vertical members with rigid joints, leaving rectangular openings; Arthur Vierendeel patented it in 1896.
Vincent Thomas Bridge
The Vincent Thomas Bridge is a suspension bridge carrying State Route 47 across the Port of Los Angeles between San Pedro and Terminal Island, opened in 1963.
Vinci SA
Vinci SA, also known as the Vinci group and formerly Société Générale d'Entreprises, is a French concessions, energy solutions, and construction group employing 294,000 people in more than 120 countries.
Viscoelastic damper
A viscoelastic damper is a passive energy-dissipation device in which a polymer sheared between steel plates converts vibration into heat, first installed in the World Trade Center in 1969.
Viscous damper
A viscous damper is a passive energy-dissipation device whose force is proportional to velocity, most commonly a piston moving in silicone oil that absorbs seismic and wind energy.
Viviers Roman bridge
Gallo-Roman stone bridge, also called Pont Romain, over the Escoutay at Viviers, Ardèche, France. Built in the 2nd–3rd century on the right-bank Rhône road network, it has 11 surviving arches, is about 100 m long, and was classified a monument historique in 1986.
Vizcaya Bridge
The Vizcaya Bridge (Puente de Vizcaya, Bizkaia Bridge) is a transporter bridge over the Bilbao estuary in Spain, completed in 1893 and operating ever since.
Vlasov thin-walled beam theory
Vlasov thin-walled beam theory is a structural mechanics model, developed by V. Z. Vlasov in the late 1930s, describing bending, torsion, and warping of open-section beams.
Vlotbrug
A vlotbrug (plural vlotbruggen) is a Dutch movable bridge whose floating pontoons are slid across the canal from the banks and drawn aside for shipping.
Voies navigables de France
Voies navigables de France (VNF) is a French public establishment created in 1991 that manages 6,700 km of canals and rivers, about 80 percent of the French navigable network.
Volga–Don Canal
The Volga–Don Canal, also known as the Volga-Don Ship Canal, is a 101-kilometer ship canal in southern Russia linking the Volga at Volgograd with the Don, opened in 1952.
Vyrnwy aqueduct
The Vyrnwy aqueduct is a gravity-fed system of three parallel pipelines carrying drinking water about 110 km from Lake Vyrnwy to Prescot, east of Liverpool.
W. A. C. Bennett Dam
The W. A. C. Bennett Dam, originally named Portage Mountain Dam, is a large earthfill hydroelectric dam on the Peace River in northern British Columbia, completed in 1967.
W. David Goodyear
W. David Goodyear is an American consulting structural engineer specializing in long-span bridges, engineer of record for the Hoover Dam bypass bridge and chief bridge engineer at T.Y. Lin International.
W. P. Franklin Lock and Dam
The W. P. Franklin Lock and Dam, also called Structure S-79, is a U.S. Army Corps of Engineers navigation lock and dam on the Caloosahatchee River in Lee County, Florida.
Wabash and Erie Canal
The Wabash and Erie Canal was a 468-mile canal in Indiana and Ohio, built between 1832 and 1853, linking Lake Erie at Toledo with the Ohio River at Evansville.
Waddell "A" Truss Bridge
The Waddell "A" Truss Bridge is a pin-connected steel railroad truss patented by engineer J. A. L. Waddell in 1894, its two trusses forming an A shape.
Wādī Ki‘ām Aqueduct (Lepcis)
Wādī Ki‘ām Aqueduct (L'acquedotto di uadi Caam), Roman aqueduct of Lepcis Magna, Libya, built AD 119–20 by Q. Servilius Candidus, carrying water about 20 km from Wadi Caam to the city's cisterns, baths, and fountains.
Wagner torsion
Wagner torsion is the nonlinear torsional behavior of thin-walled beams with open cross-sections, where inclined longitudinal stresses generate an additional torque, described by Wagner and Pretschner in 1934.
Walka Water Works
Walka Water Works is a heritage-listed 19th-century water pumping and filtration complex near Maitland, New South Wales, the Lower Hunter's sole water supply from 1887 to 1929.
Walkerton E. coli outbreak
The Walkerton E. coli outbreak, also called the Walkerton tragedy, was a May 2000 waterborne disease outbreak in Walkerton, Ontario, that sickened more than 2,300 and killed seven.
Warabandi
Warabandi, meaning "taking turns," is a rotational water-distribution method used in canal irrigation systems of northwestern India and Pakistan, giving each farmer the channel's full flow on a fixed schedule.