Coos Bay Medical Clinic Foundation

Project Type:
Foundation Engineering

Coos Bay Medical Clinic

Coos Bay, Oregon


The Geotechnical investigation of the site for a new medical clinic in Coos Bay, Oregon revealed that the site was underlain by loose sands over buried coarse organics and organic soils.  A majority of the organics consisted of logging slash consisting of large stumps and logs.  The depth of organics below design floor grade was as much as 20-feet. The most cost effective foundation system was a micropile and grade beam system.  Micropiles can be drilled and installed through just about any type of material, including large woody debris.

Services provided by K & A Engineering, Inc. included:

  • The geotechnical site investigation and report
  • Coordinating foundation alternative development with the project architect and owner,
  • Design of the micropile/grade beam system,
  • Quality assurance inspections of load testing and installation of the micropiles.