M&O Buildings - College of Marin

 

Key Features 

 

  • New campus office building 

  • New campus maintenance shops and warehouse building

  • Combined campus administrative offices and maintenance and storage facilities into one central campus location 

 

Geotechnical Challenges 

 

  • Near-surface liquefiable loose sand fill

  • Low site elevation and shallow groundwater; site subject to occasional flooding 

  • Deeper compressible soils with potential for large long-term settlements

  • Variable unstable subgrade conditions

 

Innovative Solutions

 

  • Economical and value-engineered ground stabilization and load compensation recommendations for the new building foundations 

  • Active monitoring of over-excavations and subgrade stability, implemented into a successful stabilization test section program 

  • Design and development of lightweight cellular concrete fill recommendations to successfully raise the building grade above flood levels and still minimalize long-term settlements

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