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→Calculations
==Calculations==
==Calculations==
Download a copy of our DRI (double ring infiltrometer) spreadsheet for this process. Directions are provided below.
Download a copy of our DRI (double ring infiltrometer) spreadsheet for this process. Directions are provided below.
{{Clickable button|[[File:Double ring infilt.PNG|75px|link=https://wiki.sustainabletechnologies.ca/images/7/7f/DRI.xlsx]]}}
{{#l:DRI.xlsx|Double ring to K}}
{{#l:DRI.xlsx|Double ring to K}}
==External references==
==External references==
* https://www.astm.org/Standards/D3385.htm an alternative method which uses Mariotte tubes to maintain a constant water level during testing.
* See most recent version of ASTM D3385 for standard test method.<ref> ASTM International. 2018. ASTM D3385-18 Standard Test Method For Infiltration Rate of Soils in Field Using Double-Ring Infiltrometer.</ref> [https://www.astm.org/Standards/D3385.htm]