ASTM D4318 Standard Test Methods for Liquid Limit, Plastic Limit and Plasticity Index of Soils -- eLearning Course

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Price: $115
About the Course

These test methods cover the determination of the liquid limit, plastic limit, and the plasticity index of soils.

Two methods for preparing test specimens are provided: wet preparation method and dry preparation method.

The course takes approximately 1 hour to complete and includes instructional video content, interactive knowledge checks, and a self-grading quiz. Downloadable resources include a pdf of the standard.

Learning Outcomes

By the end of this course, you will be able to:

  • List the recommendations and considerations for interferences in these test methods.
  • Describe the apparatus and related components to determine the liquid limit, plastic limit, and the plasticity of soils.
  • Recall the sampling and specimen requirements in accordance with ASTM standards.
  • List the steps for verification of apparatus, including inspection of wear on specific pointsof the liquid limit device.
  • Describe the preparation procedures for test specimens, including preparation of plastic limit test specimen.
  • Recall the procedures for Liquid Limit Method A, Liquid Limit Method B, and for Plastic Limit.
  • Identify the calculations for Liquid Limit Method A, Liquid Limit Method B, Plastic Limit, and Plasticity Index.
  • Identify the information to be recorded for the report.


Anyone who runs the D4318 test method or who needs an understanding of the test method and how it is properly run.

Certificate and CEUs

CEUs: .1 or 1 PDH

Certificate: A certificate is available upon successful completion of the course and an 80% or higher score on the exam.

ASTM Standards Referenced

ASTM D4318

Related Products

This training course is part of the following certificate programs:


1 year online subscription for a Single User Only via username/password. Requires internet access.

For pricing for Multi-User access or for more information, please contact sales here or call 1-877-909-ASTM.

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