5,208 articles
Ramappa Temple
Kakatiya Rudreshwara (Ramappa) Temple, also called Ramalingeswara Temple, is a 13th-century Shiva temple at Palampet, Telangana, begun 1213 CE, known for its sandbox foundation, floating bricks, and 2021 UNESCO World Heritage inscription.
Rammed earth
Rammed earth, also known as pisé or pisé de terre, is a building technique in which damp soil is compacted in layers to form load-bearing walls.
Rana Pratap Sagar Dam
Rana Pratap Sagar Dam is a 54 m masonry dam on the Chambal River at Rawatbhata in Kota district, Rajasthan, India, part of the Chambal Valley project.
Ranakpur Jain Temple
The Ranakpur Jain Temple is a 15th-century Śvetāmbara Jain temple of white marble in the Aravalli hills of Rajasthan, dedicated to Adinatha and famed for 1,444 carved pillars.
Ranch-style house
The ranch-style house, also called the California ranch, is a long, low single-story American house with an open plan that became dominant in postwar suburbs.
Randy's Donuts
Randy's Donuts is a donut shop and roadside landmark in Inglewood, California, built in 1953 and famous for its giant rooftop doughnut, which has appeared in numerous films and TV shows.
Ranganathaswamy Temple, Srirangam
The Ranganathaswamy Temple, also called Thiruvaranga Tirupati, is a Hindu temple to Ranganatha on Srirangam island in Tamil Nadu, India, first among the 108 Divya Desams.
Rapid sand filter
A rapid sand filter, also called a rapid gravity filter, passes chemically pre-treated water downward through coarse sand at high rates, typically 5 to 15 m³/m²/h, and is cleaned by backwashing.
Ras Al-Khair Power and Desalination Plant
The Ras Al-Khair Power and Desalination Plant is a large hybrid power and water complex on Saudi Arabia's Gulf coast that supplies desalinated water to Riyadh.
Real Casa de los Expósitos
The Real Casa de los Expósitos, known as la Inclusa, was Madrid's royal foundling hospital, originating in a 1567 hospital and taking in abandoned children from 1572.
Real-time hybrid simulation
Real-time hybrid simulation (RTHS) is a structural testing method that couples a physical laboratory specimen with a computer-simulated substructure, exchanging forces and displacements each time step to evaluate seismic response at lower cost than shake-table testing.
Rear-ventilated facade
A rear-ventilated facade is an exterior wall with cladding panels held off the structural wall so a ventilated air cavity drains and dries moisture behind them.
Rebar
Rebar, short for reinforcing bar and also called reinforcing steel, is a steel bar embedded in concrete to carry tensile loads, used in bridges, buildings, and foundations.
Recessed light
A recessed light, also called a can light, pot light, or downlight, is a light fixture installed fully above the ceiling plane, pioneered commercially in the late 1940s.
Reclaimed water
Reclaimed water, also known as recycled water or wastewater reuse, is water from sinks, showers, and industry that is treated and used again for irrigation, industrial supply, or even drinking water.
Reconstruction after the Great Kantō earthquake
Reconstruction after the Great Kantō earthquake, known as the Imperial Capital Reconstruction, rebuilt Tokyo and Yokohama after the September 1923 disaster under Home Minister Gotō Shinpei.
Reconstruction of Kyiv after World War II
The reconstruction of Kyiv after World War II was the Soviet-led rebuilding of the Ukrainian capital after its liberation in November 1943, reshaping Khreshchatyk and housing.
Red Fort
The Red Fort, or Lal Qila, is a 17th-century Mughal palace fortress in Old Delhi built by Shah Jahan, completed in 1648 and a UNESCO World Heritage Site since 2007.
Red Hill water crisis
The Red Hill water crisis was the November 2021 contamination of the U.S. Navy's drinking water at Joint Base Pearl Harbor-Hickam, Hawaii, affecting about 93,000 people.
Red House
Red House, Bexleyheath, London: Grade I listed 1859 house, Philip Webb's first commission for William Morris, Arts and Crafts birthplace, National Trust, open May to October.
Red Sea Global
Red Sea Global (RSG), formerly The Red Sea Development Company, is a Saudi real estate developer wholly owned by the Public Investment Fund, created for Vision 2030.
Redoubt
A redoubt is a small enclosed fortification, usually an earthwork with a parapet and ditch, defending a position from any direction; unlike a redan, it is closed at the rear.
Redridge Steel Dam
The Redridge Steel Dam is a decommissioned steel gravity dam across the Salmon Trout River in Houghton County, Michigan, built in 1901 to supply water for copper stamp mills.
Reef Island (Bahrain)
Reef Island (جزيرة ريف), formerly Lulu Island, is a luxury freehold artificial island off Manama, Bahrain, with about 1,217 apartments, 65 villas, and a five-star resort.
Reflected ceiling plan
A reflected ceiling plan (RCP) is a two-dimensional construction drawing showing everything on a ceiling, drawn as if reflected in a mirror on the floor so it aligns with the floor plan.
Regent International Center (丽晶国际中心)
Regent International Center (丽晶国际中心), formally 新世界·丽晶国际, is a 208-meter, 39-floor S-shaped serviced apartment complex in Xiaoshan, Hangzhou, China, known for housing over 20,000 residents at its peak.
Regent's Canal
Regent's Canal is an 8.5-mile canal in London running from Paddington to Limehouse on the River Thames, authorized in 1812 and opened in two stages between 1816 and 1820.
Regulation and licensure in engineering
Regulation and licensure in engineering is the system by which governments decide who may practice engineering, led by the Professional Engineer license, first granted under a 1907 Wyoming law.
Regulation of the Tisza
The Regulation of the Tisza (Tisza-szabályozás) was a 19th-century engineering program, launched in 1846 under Count István Széchenyi, that straightened the Tisza River across the Great Hungarian Plain.
Reichenau Abbey
Reichenau Abbey, German Kloster Reichenau, was a Benedictine monastery founded in 724 by Pirmin on Reichenau Island in Lake Constance, Germany, and a leading intellectual center of the Holy Roman Empire.