Grain-Size Analysis of Soil (Including Both Mechanical and Hydrometer Analyses) - Soil Properties: Testing, Measurement, and Evaluation - page 135

Hydrometer Effective

Reading Depth of

with Hydrometer; Value of Diameter Soil in

Elapsed Actual Composite L (cm) K of Soil Suspension, P

Time, T Hydrometer Composite Correction Temperature, (from (from Particle, (i.e., % of

Date Time (min) Reading Correction Applied, R (°C) Table 10-4) Table 10-3) D (mm) Soil Finer) (%)

4/10 8:30 A . M . 0

8:32 2 1.026 0.002 1.024 20 9.4 0.01344 0.0291 63.9

8:35 5 1.024 0.002 1.022 20 10.0 0.01344 0.0190 58.6

8:45 15 1.022 0.002 1.020 20 10.5 0.01344 0.0112 53.3

9:00 30 1.020 0.002 1.018 20 11.0 0.01344 0.0081 47.9

9:30 60 1.017 0.002 1.015 20 11.8 0.01344 0.0060 39.9

12:40 P . M . 250 1.013 0.002 1.011 20 12.9 0.01344 0.0031 29.3

4/11 8:30 A . M . 1440 1.009 0.002 1.007 20 13.9 0.01344 0.0013 18.6