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Market & Van Ness |
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Bank of America |
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San Francisco, California |
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An eight story, concrete frame office building was retrofitted with four diagonal steel braces. The braces were installed as orthogonal pairs, and each pair was attached at their tops to a massive, new concrete column extending the full height of the building. A new atrium/skylight of about 2400 square feet in plan was cut through six floors and the roof. In addition, two new steel framed penthouses were designed at the roof.
$9.0M construction cost.
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Portfolio: Seismic Retrofits
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