Horizon Engineering has experience with the following types of subsurface investigative equipment and will mobilize that which we believe will yield the most relevant information for design of a particular development in the context of its geologic setting:

  • Backhoe / excavator test pitting
  • Shovel / hand auger test pitting
  • Auger drilling and sampling
  • Mud-rotary drilling and sampling
  • Sonic drilling and sampling
  • Odex drilling and sampling
  • Becker / environmental hammer drilling and testing
  • Falling Head and Constant Head percolation testing
  • Standpipe piezometer / inclinometer installation
  • Wildcat penetrometer testing
  • DCPT and SPT testing
  • Down-hole seismic shear wave velocity measurements
  • Cone Penetration Testing (CPT); we own and operate a high quality AP Van Den Berg cone
  • Soil resistivity testing

Following a site investigation, a geotechnical report will typically be prepared which summarizes the site conditions, subsurface soil and groundwater conditions, and results of any engineering analyses. In addition, the geotechnical report will typically provide recommendations for the following, as required:

  • Foundation design (bearing capacity, site class for seismic design, settlement estimate, frost depth, etc.)
  • Earth pressures (static, seismic, compaction, and surcharge effects)
  • Slope retention, excavation slopes, and shoring requirements
  • Pavement design
  • Engineered Fill material specification and placement
  • Subgrade improvement and specialized foundations
  • Drainage, including groundwater control and stormwater management
  • Buried utilities
  • Construction considerations