Horizon: Soil fluidity
Figure 3-28. A field test on a soil with a moderately fluid manner of failure class. (Soil Survey Manual, USDA Handbook No. 18; issued March 2017).
Soil Consistence is the degree and kind of cohesion and adhesion that soil exhibits, and/or the resistance of soil to deformation or rupture under an applied stress.
The manner in which specimens of soil fail under increasing force ranges widely and usually is highly dependent on water state. To test for fluidity, a handful of soil material is squeezed in the hand.
For moderately fluid materials after exerting full pressure, most flows through the fingers; a small residue remains in the palm of the hand.
For more information about describing and sampling soils, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/field...
or Chapter 3 of the Soil Survey manual:
www.nrcs.usda.gov/sites/default/files/2022-09/The-Soil-Su...
For additional information on "How to Use the Field Book for Describing and Sampling Soils" (video reference), visit:
www.youtube.com/watch?v=e_hQaXV7MpM
For additional information about soil classification using USDA-NRCS Soil Taxonomy, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/keys-...
or;
www.nrcs.usda.gov/resources/guides-and-instructions/soil-...
Horizon: Soil fluidity
Figure 3-28. A field test on a soil with a moderately fluid manner of failure class. (Soil Survey Manual, USDA Handbook No. 18; issued March 2017).
Soil Consistence is the degree and kind of cohesion and adhesion that soil exhibits, and/or the resistance of soil to deformation or rupture under an applied stress.
The manner in which specimens of soil fail under increasing force ranges widely and usually is highly dependent on water state. To test for fluidity, a handful of soil material is squeezed in the hand.
For moderately fluid materials after exerting full pressure, most flows through the fingers; a small residue remains in the palm of the hand.
For more information about describing and sampling soils, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/field...
or Chapter 3 of the Soil Survey manual:
www.nrcs.usda.gov/sites/default/files/2022-09/The-Soil-Su...
For additional information on "How to Use the Field Book for Describing and Sampling Soils" (video reference), visit:
www.youtube.com/watch?v=e_hQaXV7MpM
For additional information about soil classification using USDA-NRCS Soil Taxonomy, visit:
www.nrcs.usda.gov/resources/guides-and-instructions/keys-...
or;
www.nrcs.usda.gov/resources/guides-and-instructions/soil-...