Greenhouse for Nathan Hale High School

McMicken Heights Elementary School
April 27, 2017
Auburn Pool
April 27, 2017
Location: Seattle, Washington

This project involved a geotechnical engineering study for a proposed one-story steel-framed greenhouse building. ORA was engaged to determine the engineering properties of the subsurface soils at this site and to provide recommendations for design of the foundations and earthwork.

ORA completed three borings and laboratory testing, and presented a geotechnical report with recommendations for:
  • seismic design considerations including liquefaction potential,
  • suitable foundation systems with estimated settlements,
  • allowable bearing capacity for conventional spread footings,
  • soil improvement recommendations, if applicable,
  • deep foundation systems recommendations, if applicable (e.g. piles),
  • lateral earth pressures and friction coefficients for temporary and permanent walls under static and seismic loading conditions,
  • stability of the site slopes,
  • floor slab design, including subsurface drainage,
  • influence of groundwater on the development including drainage recommendations, and
  • site preparation and earthwork.