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STREAM Innovation Center - De La Salle High School


Key Features 


  • 3-story structure with plan dimensions of 75 ft by 180 ft

  • Building includes a bridge connecting the second floor to an existing classroom building

  • Structural system consists of post-tensioned concrete slabs supported by reinforced concrete walls and columns


Geotechnical Challenges


Innovative Solutions 

  • Site is less than one mile from Concord fault

  • Site is underlain by highly variable undocumented fill

  • Potential liquefaction induced settlement

  • Expansive soils

  • 30-inch thick reinforced concrete mat foundation locally thickened to 60 inches beneath certain load bearing elements

  • Removal and replacement of undocumented fill

  • Removal and replacement of expansive soils

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