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Reichstag building
The Reichstag building (Reichstagsgebäude) in Berlin is the seat of the German Bundestag, built from 1884 to 1894 by Paul Wallot, burned in 1933, and rebuilt in the 1990s by Norman Foster with a glass dome.
Reichstag dome
The Reichstag dome is a glass and steel cupola by Norman Foster on the Reichstag Building in Berlin, open to visitors above the Bundestag chamber since 1999.
Reims Cathedral
Reims Cathedral (Cathédrale Notre-Dame de Reims) is the Gothic cathedral of Reims, France, built mainly in the 13th century and the coronation church of French kings.
Reinforced concrete
Reinforced concrete, or ferro-concrete, is a composite building material in which embedded steel bars carry the tension that concrete cannot resist, used in roads, bridges, and buildings.
Reinhard Woltman
Reinhard Woltman (also spelled Woltmann), born 1757 and died 1837, was a German hydraulic engineer who directed all of Hamburg's water engineering and invented the Woltman Flügel current meter for measuring flow in open channels.
Rem Koolhaas
Rem Koolhaas, born Remment Lucas Koolhaas in Rotterdam in 1944, is a Dutch architect and writer who founded OMA and won the Pritzker Architecture Prize in 2000.
Renaissance architecture
Renaissance architecture, also known as the Renaissance style, began in early 15th-century Tuscany with Filippo Brunelleschi, reviving classical Roman symmetry, proportion, columns, and domes in place of Gothic.
Renaissance Center
The Renaissance Center, locally the RenCen, is a group of seven skyscrapers on Detroit's riverfront, opened in 1977, later General Motors' world headquarters and home to Michigan's tallest building.
Renaissance Revival architecture
Renaissance Revival architecture is a nineteenth-century historicist style reviving the Italian Renaissance palazzo, used for libraries, courthouses, and mansions in America from about 1840 to 1925.
Rendsburg High Bridge
The Rendsburg High Bridge (Rendsburger Hochbrücke) is a steel cantilever railway bridge at Rendsburg, Germany, built between 1911 and 1913 to carry trains over the Kiel Canal.
Rendsburg Transporter Bridge
The Rendsburg Transporter Bridge (German: Schwebefähre) is a passenger-and-vehicle gondola suspended beneath the Rendsburg High Bridge, a railway viaduct over the Kiel Canal, opened in 1913 and unique worldwide.
Renewable energy in Turkey
Renewable energy in Turkey is electricity and heat from hydropower, solar, wind, geothermal, and biomass, supplying 43.3% of electricity in 2025, led by hydropower and record solar and wind growth.
Renzo Piano Building Workshop
Renzo Piano Building Workshop is an Italian architecture firm founded by Renzo Piano in 1981, known for the Centre Pompidou, the Shard in London, and the Whitney Museum.
Research stations in Antarctica
Research stations in Antarctica are permanently or seasonally staffed scientific facilities built by national programs; as of the 2020s, 30 nations manage more than 70 stations, descended largely from the 1957–58 International Geophysical Year.
Reservoir
A reservoir, also called a storage reservoir, is a lake, often man-made behind a dam, storing water for public supply, irrigation, flood control, and power.
Reservoir-induced seismicity
Reservoir-induced seismicity, also called reservoir-triggered seismicity, is earthquake activity caused by filling artificial reservoirs; the largest case was the magnitude 6.5 Koyna earthquake in India in 1967.
Reservoirs Act 1975
The Reservoirs Act 1975 is a UK law regulating the safety of large raised reservoirs in England and Wales through registration, inspection, and supervision by qualified civil engineers.
Reservoirs in Germany
Reservoirs in Germany are impounded by 530 operating dams, 266 of them large dams, led by Saxony with 190 and used mainly for flood control, recreation, and energy.
Reservoirs in the Czech Republic
The reservoirs of the Czech Republic are artificial lakes impounded by dams across the country's rivers, including 115 large reservoirs; the largest, Orlík, holds 720 million m³.
Reservoirs of East Asia
The reservoirs of East Asia are dominated by China's roughly 98,000 reservoirs, the world's largest system with about 980 km³ of storage, led by Three Gorges.
Reservoirs of New Zealand
The reservoirs of New Zealand are impounded water bodies built for hydroelectricity storage, measured in gigawatt-hours rather than volume, with almost all controllable storage in the South Island.
Reservoirs of Southeast Asia
Reservoirs of Southeast Asia covers impounding reservoirs for water supply and storage across the region, where 186 large reservoirs hold about 175 cubic kilometers, led by Thailand's Srinagarind and Bhumibol.
Reservoirs of Spain
Reservoirs of Spain, called embalses in Spanish, are artificial lakes impounded by dams on Spanish rivers; Spain leads the EU with more than 1,200 large dams holding about 56,000 hm³.
Reservoirs of the Alps
Reservoirs of the Alps are high-altitude impounding basins that store meltwater in summer and release it through turbines to generate hydroelectricity during the winter peak in demand.
Reservoirs of West and Central Asia
The reservoirs of West and Central Asia are artificial lakes behind dams storing seasonal river flow for irrigation, water supply, and hydropower, mostly built since the 1950s.
Residenz (Würzburg)
The Würzburg Residence is the Baroque palace of the prince-bishops of Würzburg in southern Germany, begun in 1720, designed by Balthasar Neumann, and decorated by Tiepolo.
Residenzschloss (Munich)
The Residenzschloss, known in English as the Munich Residence (Münchner Residenz), is the former palace of the Bavarian Wittelsbach rulers in central Munich, used from 1508 to 1918.
Resilient modulus
The resilient modulus (MR) is the ratio of applied cyclic stress to recoverable strain in unbound pavement materials and subgrade soils, the key material input in modern pavement design.
Response history analysis
Response history analysis (RHA), also called time-history analysis, computes the time-dependent seismic response of a structure by numerically integrating its equations of motion under an earthquake ground-motion record.
Response modification factor
The response modification factor (R) is a seismic engineering coefficient that reduces elastic design forces for a structure's ductility, overstrength, and redundancy, first codified in the ATC-3-06 report of 1978.