Name: Historic San Francisco building to be lifted 10 feet due to rising sea levels
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Historic San Francisco building to be lifted 10 feet due to rising sea levels

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A historic San Francisco waterfront building where ships were built during World War II is getting a heavy lift due to rising sea levels.The 2,000-ton building (that's 300 elephants if you like to count in elephants) that covers an area larger than a football field will be raised 10 feet in a gargantuan effort to stave off rising waters due to climate change.The developing Mission Bay neighborhood, which sits right on the Bay in the southeast corner of San Francisco, needs protection against rising waters, that are expected to increase between 10 and 40 inches by the end of the century.The feat, being undertaken by developer Brookfield Properties based on designs from master planner SITELAB urban studio, is part of the wider $3.5 billion redevelopment of San Francisco’s historic Pier 70 shipyard into retail, offices and housing.ALSO:How do you raise a giant building? It takes a lot of planning. Over the last nine months, 136 hydraulic jacks have been installed under the building, along with 68 temporary shoring towers. A new foundation has been built to anchor footings to the bedrock and steel beams have been placed between the original columns to stabilize the building.The lift itself, due to take place this month, will take around two weeks. Each hydraulic jack will lift the structure 5.5 inches over two hours, with no more than a half-inch height difference among segments as the building slowly makes its ascent. After each lift, wood is stacked underneath the building and then replaced by steel. A computer will monitor the lift to ensure minimal discrepancies between the jacks.“These jacks are all part of the symphony, the computer is the conductor,” Mike Tzortzis, vice president at Plant Construction, toldBuilt in 1941 by the Navy for America's wartime shipbuilding effort, Building 12 was originally used for the fabrication of steel plates for warships' hulls. The redeveloped and raised site is due to open to the public in 2022 and host food producers and other retail outlets. The upper two levels will hold studios and offices. Two other historic buildings nearby will also be overhauled and form housing and waterfront parks.The existing shoreline will remain at its current level, with a new pathway installed that is intended to be lost to the Bay as the waters rise.Andrew Chamings is an editor at SFGATE. Email: Andrew.Chamings@sfgate.com | Twitter: @AndrewChamings

A historic San Francisco waterfront building where ships were built during World War II is getting a heavy lift due to rising sea levels.The 2,000-ton building (that's 300 elephants if you like to count in elephants) that covers an area larger than a football field will be raised 10 feet in a gargantuan effort to stave off rising waters due to climate change.The developing Mission Bay neighborhood, which sits right on the Bay in the southeast corner of San Francisco, needs protection against rising waters, that are expected to increase between 10 and 40 inches by the end of the century.The...

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Writer. editor at @sfgate. also @theatlantic, @mcsweeneys , @vice, @thebolditalic. dm or andrew.chamings@sfgate.com if you have a story in your brainbox

Andrew Chamings

AndrewChamings

News. Culture. Sports. Opinion. All the journalism that matters from San Francisco & the Bay Area. Newsletters: http://sfgate.com/newsletters IG: http://instagram.com/sfgate

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Historic San Francisco building to be lifted 10 feet due to rising sea levels

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