- Soil Mechanics (the complete course)
- Soil Classification (slide presentation)
- Breaking Down Sieve Data for both Lab and Textbook Problems
- Sorting Out the Coarse Fraction Using Pie Charts, and a Unified Classification Example
- DD-1207 (for gradation charts)
- Unified Soil Classification, from NAVFAC DM 7
- Ohio DOT’s Rendition of the AASHTO Classification System
- Blessed are the Merciful: I keep getting requests to “go light” on the grading. This is how I did it myself.