Market & Van Ness

  Bank of America  
  San Francisco, California  
  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.

Portfolio: Seismic Retrofits