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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.  
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==
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==Calculations==
==Calculations==
[[File:DRI.xlsx]]
Download a copy of our DRI (double ring infiltrometer) spreadsheet for this process. Directions are provided below.
 
{{#l:DRI.xlsx|Double ring to K}}


Using the DRI (double ring infiltrometer) spreadsheet:
===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.  

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