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→Calculations
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==Principle==
==Principle==
Using a double ring infiltrometer is a relatively simple (although slow) method of measuring soil the [[hydraulic conductivity]] or ''[[design infiltration rate]]'' of a [[soil]].
==Measurements==
==Measurements==
==Calculations==
==Calculations==
Download a copy of our DRI (double ring infiltrometer) spreadsheet for this process. Directions are provided below.
{{#l:DRI.xlsx|Double ring to K}}
===The Solver add-in===
===The Solver add-in===
To use the calculation spreadsheet, an additional add-in must be enabled in your Excel program.
To use the calculation spreadsheet, an additional add-in must be enabled in your Excel program.