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While highly effective, the ASTM D3385-18 test method is not a one-size-fits-all solution.
You may conduct tests on bare soil or leave natural vegetation in place, depending on the conditions you are analyzing. Phase 2: Installing the Rings astm d338518 pdf
Automated or manual systems designed to maintain a consistent water level (head) within both rings throughout the test duration.
Understanding ASTM D3385-18: The Standard Test Method for Infiltration Rate of Soils Using Double-Ring Infiltrometer I=ΔVA⋅Δtcap I equals the fraction with numerator cap
ASTM D3385-18 is the active standard test method for measuring the infiltration rate of soils in the field using a double-ring infiltrometer. It is utilized in geotechnical engineering to assess water penetration using constant, measured flow in two concentric rings, making it best suited for uniform soils with specific hydraulic conductivity. Purchase the official document at ASTM International ASTM International
Continue the test until a steady-state infiltration rate is achieved—typically requiring 4 to 6 hours or until consecutive readings yield identical infiltration velocities. Data Analysis and Calculation The incremental infiltration velocity ( ) is calculated using the following formula: Understanding ASTM D3385-18: The Standard Test Method for
The soil edges along the rings are gently tamped to prevent water from bypassing the soil matrix along the metal walls. 3. Testing Procedure