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Parcel O

Cement Deep Soil Mixing (CDSM)

San Francisco, California

Project Description

The Parcel O complex consists of a low income housing structure in urban San Francisco. AGI designed and installed CDSM columns for structural foundation support. AGI also constructed a temporary shoring wall consisting of continuous overlapping 6ft diameter CDSM columns to retain the soil of the upper level work pad while work was being carried out at the basement level.

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Application

  • Provide improved bearing capacity
  • Mitigate liquefaction settlement
  • Limit static settlement
  • CDSM shoring wall for temporary support

Geotechnical Conditions

  • Undocumented fill
  • Dune sands
  • Underlying marsh deposits

Project Info:

  • Design-Build Contractor: Advanced Geosolutions Inc (AGI)
  • Owner: Mercy Housing
  • General Contractor: Cahill Contractors– San Francisco
  • Geotechnical Engineer: Langan Treadwell Rollo
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