Kingdom Tower | Tower in Riyadh city || Raja Bader Vlogs

Kingdom Centre (Arabic: مركز المملكة), formerly Kingdom Tower, is a 99-story 302.3 m (992 ft) skyscraper in Riyadh, Saudi Arabia. When completed in 2002 it overtook the 267-meter (876 ft) Faisaliyah Tower as the tallest tower in Saudi Arabia. It has since been surpassed and, as of 2021 is the fifth-tallest skyscraper in the country, whose tallest two buildings are the Abraj Al Bait Towers and the Capital Market Authority Tower. It is the world's third-tallest building with a hole after the Shanghai World Financial Center and the 85 Sky Tower in Taiwan.

The Kingdom Centre was designed by the US-based architecture firm Ellerbe Becket in a joint venture with the Riyadh-based architecture and engineering firm Omrania and Associates.
The building is composed of a tower and a podium comprising two symmetrical wings. The tower's almond-shaped plan and curving forms gives the building a distinctive shape that helps keep it cool with the narrow ends facing the east and west where heat gain is greatest. A high-performance curtain wall made from silver butt-jointed reflective glazing, also helps control heat gain while concealing the three main mechanical floors to create a seamless facade.
At the top of the tower an inverted arch is spanned by a glass skybridge housing a public observation deck.The large opening allows the building to rise higher than the height limit—30 occupied floors—mandated by local laws. Its design was inspired by iconic structures from around the world, including the Gateway Arch in St. Louis The Sydney Harbour Bridge and the Eiffel Tower.
From base to top the tower house 13 floors of offices 10 stories of hotel five stories of luxury apartments and additional office space at the top.
The East wing of the podium houses the Al-Mamlaka shopping mall which features more than 150 stores divided across three levels - the first targeted to young people, the second to fashion and furnishings and the third level is reserved for women.The West wing houses event and entertainment spaces.

Structure

The Kingdom Center is built on a four-meter-thick 3100-square-meter raft foundation.Its structure consists of two systems: reinforced concrete columns, beams and core for the first 180 meters and a tubular steel frame structure for the building's remaining height.

Mechanical systems

A multi-part mechanical system was created to accommodate the building's mixed-use program.
The tower is cooled by a central chilled water plant, supported by a thermal energy storage system that provides 5,000 tons of cooling capacity. This storage system is used during the hottest hours of the day, allowing the building to shift cool-air production to off-peak hours when electrical demand is lowest.
The podium structures are served by separate mechanical systems designed to accommodate the needs of the building's unique programs. Systems used to cool these spaces include variable air volume constant volume and fan coils.





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