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Potala Palace
The Potala Palace (布达拉宫), also known as Budala Palace, is a hilltop palace-fortress in Lhasa, Tibet, built on Marpo Ri and the winter residence of the Dalai Lamas until 1959.
Pothole
A pothole is a bowl-shaped hole in a road pavement that grows under traffic and weather, a leading source of vehicle damage costing US motorists almost $3 billion a year.
Poulaphouca Reservoir
Poulaphouca Reservoir, locally called the Blessington Lakes, is an artificial lake in Counties Wicklow and Kildare, Ireland, created by damming the River Liffey in 1940.
Pounding (structural engineering)
Pounding, also called seismic pounding, is the collision of adjacent buildings during earthquake shaking when the separation gap between them is too small, causing damage or collapse.
Power Construction Corporation of China
Power Construction Corporation of China (POWERCHINA, 中国电力建设集团有限公司) is a wholly State-owned group founded in 2011 that builds hydropower projects including the Three Gorges and Baihetan stations.
Power Court Stadium
Power Court Stadium is a planned 25,000-seat football stadium in Luton, England, approved in December 2024 as the new home of Luton Town Football Club, targeted to open for the 2028/29 season.
Powis Castle
Powis Castle is a medieval fortress at Welshpool in Powys, Wales, transformed by the Herbert family into a grand country house now cared for by the National Trust.
Pozzolan
A pozzolan is a siliceous material with little cementitious value alone that reacts with calcium hydroxide and water to form cementitious compounds, improving concrete strength, impermeability, and durability.
Prado Dam
Prado Dam is a flood control dam on the Santa Ana River in Riverside County, California, built by the U.S. Army Corps of Engineers and completed in 1941.
Prague astronomical clock
The Prague astronomical clock, or Prague Orloj, is a medieval astronomical clock on the Old Town Hall tower in Prague's Old Town Square, installed in 1410 and still running its original mechanism.
Prague water-supply aqueducts
Prague's water-supply aqueducts are the conveyance lines built to bring drinking water to Prague, chiefly the 23 km Káraný pressure pipeline, officially opened in 1914.
Prairie School
The Prairie School was an architectural movement centered in Chicago and the Midwest from about 1900, known for horizontal, open-plan houses, most famously Frank Lloyd Wright's Robie House.
Prambanan
Prambanan, also called Candi Loro Jonggrang, is a ninth-century Hindu temple complex on Java, Indonesia, and the largest temple compound dedicated to Shiva in the country.
Pratt truss
The Pratt truss is a bridge truss with diagonals in tension and verticals in compression, patented by Thomas and Caleb Pratt in 1844 and once the most common US bridge form.
Prayer hall
A prayer hall is the main interior space of a mosque where Muslims gather for congregational prayer, oriented toward the qibla, the direction of Mecca.
Pre-modern dam construction techniques
Pre-modern dam construction techniques built water barriers of masonry, earth, and rock without concrete or steel, from the Jawa Dam of the mid-4th millennium BC onward.
Precast segmental construction
Precast segmental construction is a bridge-building method in which concrete segments cast in a plant are joined into a continuous span by post-tensioning, first used in Europe in the 1950s.
Prefabricated vertical drain
A prefabricated vertical drain (PVD) is a manufactured geosynthetic drain inserted into soft ground to shorten drainage paths and consolidation time, usually with a surcharge or vacuum preloading.
Prefabrication
Prefabrication, also called prefabricated construction, is a construction method in which components are manufactured under controlled conditions, then transported and assembled on site, as in immersed tube tunnels.
Premetro
A premetro is an urban transit system where trams run in tunnels built to allow later conversion to a full metro, notably in Brussels and Antwerp.
Premier Inn
Premier Inn, formerly Travel Inn and Premier Travel Inn, is a British budget hotel chain owned by Whitbread and the largest hotel brand in the United Kingdom.
Prestige Kingfisher Towers
Prestige Kingfisher Towers, also called Kingfisher Towers, is an ultra-luxury three-tower residential development on Vittal Mallya Road, Ashok Nagar, Bengaluru, built by Prestige Group with United Breweries on Mallya's ancestral land, with 81 full-floor 8,321 sq ft apartments and the unoccupied, seized Sky Mansion penthouse.
Prestressed concrete
Prestressed concrete, also known as concrete prestressing, is concrete in which tensioned steel strands introduce permanent compression, preventing the cracking that concrete's weakness in tension would otherwise cause.
Primary treatment (sewage)
Primary treatment is the first stage of sewage treatment, a physical, non-biological process in tanks that removes floating and settleable solids after screening and grit removal.
Prince's Palace of Monaco
The Prince's Palace of Monaco (Palais Princier) is the official residence of Monaco's sovereign prince, a Genoese fortress built from 1215 on the Rock of Monaco.
Prison architecture
Prison architecture is the design of buildings and grounds for holding people deprived of liberty, historically shaped by Bentham's Panopticon and now by dignity, light, and human rights standards.
Pritzker Architecture Prize
The Pritzker Architecture Prize is an annual international award honoring a living architect's body of built work, founded in 1979 by the Pritzker family through their Hyatt Foundation and often called architecture's Nobel.
Privatisation of the English water industry
The privatization of the English water industry transferred ten regional water authorities to private companies floated on 1 September 1989 under Margaret Thatcher's government, creating the regulator Ofwat.
Prix de Rome (architecture)
The Prix de Rome in architecture (Grand Prix de Rome d'architecture) was a French state competition, held from 1720 to 1968, funding winners' residencies in Rome.
Proceedings of the Institution of Civil Engineers
The Proceedings of the Institution of Civil Engineers is a family of 18 peer-reviewed civil engineering journals published by ICE Publishing, with a lineage dating to 1836.