This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- To differentiate Standard (ASTM D698) and Modified (ASTM D1557) Proctor tests by their compactive energy.

- How the compaction curve plots dry unit weight versus water content to find the maximum dry unit weight and optimum moisture content.

- The essential formula for converting total (moist) unit weight to dry unit weight: γ_d = γ_t / (1 + w).

- That field compaction requirements are specified as a percentage of the maximum lab density (e.g., 95% of Standard Proctor).

- To watch for common exam traps that mix up Standard and Modified test data or confuse moist and dry unit weights.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep