F5 Tower (previously The Mark and Fifth and Columbia Tower) is a 660-foot (200 m) skyscraper that is under construction in Downtown Seattle, Washington. It will consist of 44 floors and be completed in late August or early September 2017. When completed, it will be the fifth-tallest building in Seattle, and the tallest building completed since 1990.
The tower will consist of 516,000 square feet (47,900 m2) of office space leased entirely by F5 Networks and a 189-room luxury hotel operated by SBE Entertainment Group. It was designed by Zimmer Gunsul Frasca and is being developed by Daniels Real Estate. Out of all skyscrapers under construction amidst Seattle's historic construction boom, F5 Tower is the most expensive.
The tower is being built next to the former First Methodist Episcopal Church. Although the education wing was demolished to make room for the tower, the remainder of the former church building is being preserved and has since been re-purposed into Daniels Recital Hall.
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Design
To achieve LEED Gold standards, the tower will have a system to capture rainwater for reuse, a 35-foot-tall (11 m) "living wall" where plants grow in a Columbia Street façade, and rooftop solar energy equipment. Plans call for the building to be smallest at its base with each floor a different size.
The glass walls of the building are designed to regulate temperature and energy use by letting in some sun rays and reflecting others. It will use the same glass as the One World Trade Center in New York City.
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Construction
Shoring and excavation began in summer 2008 and was delayed due to economic conditions. Construction re-started in the summer of 2014. During construction, cables and shoring mechanisms left over from the construction of the Columbia Center in the 1980s were discovered, which led developer Daniels Real Estate to file a lawsuit in August 2015 against the owners of the Columbia Center. The building topped-out in July 2016.
Source of the article : Wikipedia
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