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→Data Analysis
===Data Analysis===
===Data Analysis===
NB: The Hazen formula method of estimating soil permeability based on grain size distribution analysis is only suitable for soils with d<sub>10</sub> between 0.1 and 2.5 millimeters <ref>Hazen, A. (1893). Some physical properties of sand and gravel with special reference to the use in filtration. 4th Annual Report, State Board of Health, Boston.</ref>. The soil permeability value estimated using the Hazen method can be considered to be the measured infiltration rate of the soil, f, in mm/h:
NB: The Hazen formula method of estimating soil permeability based on grain size distribution analysis is only suitable for soils with d<sub>10</sub> between 0.1 and 2.5 millimeters <ref>Hazen, A. (1893). Some physical properties of sand and gravel with special reference to the use in filtration. 4th Annual Report, State Board of Health, Boston.</ref>. The soil permeability value estimated using the Hazen method can be considered to be the measured infiltration rate of the soil, f, in mm/h
<math>f=C\cdot {\left (d_{10}\right )^{2}}</math>
:<math>f=C\cdot {\left (d_{10}\right )^{2}}</math>
{{Plainlist|1=Where:
{{Plainlist|1=Where:
*''d<sub>10</sub>'' = the soil particle diameter for which 10% of all soil particles are finer (smaller) by weight (mm), median value of all samples tested.
*''d<sub>10</sub>'' = the soil particle diameter for which 10% of all soil particles are finer (smaller) by weight (mm), median value of all samples tested.
*''C'' = is a shape factor (see below)
*''C'' = is a shape factor (see below)}}
{| class="wikitable"
{| class="wikitable"