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Encore – The Environment Beneath the Skid-Steer - Soil Engineering Basics for Onsite System Installers

  • Delaware - Onsite Septic System Contractors
  • Indiana - Professional Engineers
  • Iowa Onsite Wastewater Association - IOWWA - CIOWTS
  • Maine - Plumbing Inspectors
  • Maine - Site Evaluator
  • Maine - Voluntary Certification for On-Site System Contractors
  • Massachusetts - Soil Evaluator
  • Massachusetts - System Inspectors
  • National Environmental Health Association - NEHA
  • Nebraska - Onsite Wastewater System Contractors
  • New Hampshire - Designers & Installers
  • New York - Land Surveyors
  • New York - Professional Engineers
  • North Carolina - Registered Environmental Health Specialist (REHS)
  • Ohio - Sewage Treatment System Contractors

Join us for a FREE live webinar hosted by Infiltrator Water Technologies featuring members of our team. Please note all webinar times are Eastern Standard time.

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Geotechnical engineering is the branch of civil engineering concerned with the behavior of earth materials, involving soil mechanics, geology, hydrology, and geophysics.  Onsite wastewater treatment system installers operate equipment above and near underground structures, sloped ground, and potentially unstable soil.  Construction equipment creates a sphere of influence in the underground environment that extends both horizontally and vertically, resulting in a variety of concerns during onsite system installation.  While geotechnical engineering is an important aspect of onsite wastewater treatment system construction, the below-ground, out-of-sight aspect should not make it a lesser concern.  The objective of this seminar is to increase installers’ awareness of the conditions that exist in the subsurface environment during onsite system construction.  The discussion covers geotechnical engineering fundamentals as related to onsite system construction, including soil unit weight, earth pressure, stress on buried structures, and slope stability.  Soil stress with depth and the lateral extent of stress in soil will be addressed, as well as the effect of static and dynamic stress on buried structures.  Publicly available construction videos will be used as case studies to tie the geotechnical engineering concepts to real-life situations.

Speaker Biography

David Lentz, P.E., Regulatory Director

Dave Lentz manages Infiltrator Water Technologies’ government affairs department, with responsibility for regulation of the company’s effluent dispersal, tank, and treatment product lines. Nationally, Infiltrator is involved in rule making, legislation, and industry standards development supporting the onsite wastewater treatment system industry. Dave has 25 years of experience related to soil and groundwater systems.  He holds a Bachelor’s degree in structural engineering and a Master’s degree in geotechnical engineering, and is a licensed professional engineer.

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