Geotechnical Analysis of Soil PP-12 from the Palouse Prairie Restoration Site, Cheney, WA
Faculty Mentor
Dr. Richard Orndorff
Presentation Type
Poster
Start Date
May 2025
End Date
May 2025
Location
PUB NCR
Primary Discipline of Presentation
Geology
Abstract
The Prairie Restoration Site is 120 acres of farmland west of Eastern Washington University campus. It is being restored to its native environment with plans to include educational buildings and recreational trails. We obtained soil (PP-12) from the future site of an outdoor classroom and assessed the properties of the soil for suitability in construction according to the following ASTM Standards:
- ASTM D854 to determine Soil Specific Gravity
- ASTM D422 Sieve Analysis to determine grain size distributions
- ASTM D7928 Hydrometer Analysis to determine distribution of fines (<200 sieve)
- ASTM D4318 Atterberg Limits to determine LL, PL, PI
- ASTM D698 Standard Proctor Test to determine optimum water content, dry bulk unit weight, and allowable range of water content for field compaction
- ASTM D 2166 Unconfined Compressive Strength Test to determine the ultimate strength.
Using these results, the soil type was determined according to the US Army Corps of Engineers USCS Flowchart for Soil Classification
Recommended Citation
Smith, Marilyn L.; Price, Matt; and Oudes, Emelia, "Geotechnical Analysis of Soil PP-12 from the Palouse Prairie Restoration Site, Cheney, WA" (2025). 2025 Symposium. 12.
https://dc.ewu.edu/srcw_2025/ps_2025/p1_2025/12
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Geotechnical Analysis of Soil PP-12 from the Palouse Prairie Restoration Site, Cheney, WA
PUB NCR
The Prairie Restoration Site is 120 acres of farmland west of Eastern Washington University campus. It is being restored to its native environment with plans to include educational buildings and recreational trails. We obtained soil (PP-12) from the future site of an outdoor classroom and assessed the properties of the soil for suitability in construction according to the following ASTM Standards:
- ASTM D854 to determine Soil Specific Gravity
- ASTM D422 Sieve Analysis to determine grain size distributions
- ASTM D7928 Hydrometer Analysis to determine distribution of fines (<200 >sieve)
- ASTM D4318 Atterberg Limits to determine LL, PL, PI
- ASTM D698 Standard Proctor Test to determine optimum water content, dry bulk unit weight, and allowable range of water content for field compaction
- ASTM D 2166 Unconfined Compressive Strength Test to determine the ultimate strength.
Using these results, the soil type was determined according to the US Army Corps of Engineers USCS Flowchart for Soil Classification
