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Engineering for Soil

Original Presentation Date: February 2nd, 2022

Presented by David Peterson

The Unified Soil Classification System (USCS) provides a standardized organizational system for many different types of soils similar to the way the periodic table of the elements organizes all atoms. Because the structural engineering parameters of the various soil types are relatively consistent it is possible to codify such things as bearing capacity and lateral active pressures. This program maps the engineering parameters and identifies the source-code of the requirement. It is the basis for all watershape structural engineering!

This program requires a $75 fee which includes the key information in both a PDF and full-color poster which is the first in a series of WatershapeArts posters featuring both a beautiful image and useful information.

1:00 hour -Watershape University is authorized by IACET to offer 0.1 CEUs for this program.

CEUs are awarded for successfully logging completion of this webinar through the course curriculum page after viewing the lecture. Further instructions for registering your completion of this course are posted on the course curriculum page below the webinar recording.


  1. Discuss the Unified Soil Classification System (USCS).
  2. Describe how certain structural engineering parameters of soils are used by structural engineers to guide their designs.
  3. Identify the source of certain structural engineering parameters related to various soil types identified in the USCS.
  4. Discuss the liability of using soil parameters - even if from a licensed geotechnical engineer - that may be less conservative than those prescribed by the IBC, IRC and ASCE-7.