801 Seventh Avenue S.W., commonly known as the Nexen Building, is a high rise office building in

downtown ''Downtown'' is a term primarily used in American and Canadian English to refer to a city's sometimes commercial, cultural and often the historical, political, and geographic heart. It is often synonymous with its central business district ( ...

Calgary Calgary () is a major city in the Canadian province of Alberta. As of 2021, the city proper had a population of 1,306,784 and a metropolitan population of 1,481,806 making it the third-largest city and fifth-largest metropolitan area in C ...

Alberta Alberta is a Provinces and territories of Canada, province in Canada. It is a part of Western Canada and is one of the three Canadian Prairies, prairie provinces. Alberta is bordered by British Columbia to its west, Saskatchewan to its east, t ...

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

. It is a 37-storey

skyscraper A skyscraper is a tall continuously habitable building having multiple floors. Most modern sources define skyscrapers as being at least or in height, though there is no universally accepted definition, other than being very tall high-rise bui ...

, with a height of 153 m (502 ft).Emporis. It was designed by ''CPV Group Architects and Engineers Ltd'' and built by ''CANA Construction Company Limited''. The late-

modernist Modernism was an early 20th-century movement in literature, visual arts, and music that emphasized experimentation, abstraction, and Subjectivity and objectivity (philosophy), subjective experience. Philosophy, politics, architecture, and soc ...

building was completed in 1982. The Nexen Building employs a composite stub-girder steel-frame floor system,Stringer, David C.
Staggered Truss and Stub Girder Framing Systems in Western Canada
". ''Technical paper published by the Canadian Steel Construction Council''. 1982. Retrieved on January 20, 2009. originally developed in part by Joseph Colaco.Colaco, Joseph P.
A Stub-Girder System for High-Rise Buildings
. ''Technical paper presented at the AISC National Engineering Conference, New York''. May 1972. Retrieved on January 20, 2009. It is unique in that it is one of the few buildings in Calgary that do not follow the traditional grid pattern of the downtown core. Instead of facing south–north, or east–west, it stands diagonally.

Tenants

The original tenant of the Nexen Building was the NOVA Corporation. In 2000, the building became

Nexen Nexen may refer to: * Nexen Energy, now CNOOC Petroleum North America, a Canadian oil and gas company * Nexen Tire, a Korean tire manufacturer *NEXEN, an online platform used by BNY {{disambiguation ...

's headquarters. Nexen was purchased by Chinese state-owned CNOOC in 2013 and reduced its workforce over time. Nexen moved from the Nexen Building in 2019, instead subleasing 8 floors of The Bow from

Cenovus Cenovus Energy Inc. (pronounced se-nō-vus) is a Canadian integrated oil and natural gas company headquartered in Calgary, Alberta. Its offices are located at Brookfield Place, having completed a move from the neighbouring Bow in 2019. Histo ...

, leaving the Nexen Building vacant from 2019 to 2025 In 2025 the University of Calgary's School of Architecture, Planning and Landscape announced they are leasing the Annex and 9 floors of the Nexen Building. An unnamed Data Centre is also leasing 1 floor.

References

Buildings and structures in Calgary Skyscraper office buildings in Calgary 1982 establishments in Alberta Office buildings completed in 1982 {{Alberta-struct-stub

Tenants

See also

References