Astm D338518 Pdf Link (5000+ Exclusive)

ASTM D3385-18 standard provides a field procedure for measuring the infiltration rate

: In some cases, pre-soaking the soil is recommended to reach saturation before formal measurement begins. ASTM International 2. Ring Installation astm d338518 pdf

Significance of the Report:

For most North American regulatory and engineering applications, ASTM D3385-18 remains the gold standard. ASTM D3385-18 standard provides a field procedure for

• Inner Ring: This is the measurement ring. The standard suggests an inner diameter typically ranging from 200 mm to 300 mm (approx. 8 to 12 inches), though larger diameters are preferred for heterogeneous soils to ensure a representative elementary volume (REV).
• Outer Ring: This acts as the buffer zone. It must have a diameter sufficient to contain the lateral spread; a ratio where the outer ring diameter is approximately double the inner ring diameter is common.
• Depth of Penetration: The rings must be driven into the soil to a sufficient depth (typically 50 to 100 mm) to prevent leakage and bypass flow along the ring walls.

ASTM D3385-18 outlines the standard field procedure for measuring soil infiltration rates using a double-ring infiltrometer to manage water, design septic systems, and evaluate groundwater recharge. The test requires driving 300 mm and 600 mm diameter rings into the soil, followed by a one-hour presoaking period, before measuring the volume of water required to maintain a constant head. For a complete overview of the procedure, refer to the document at my.civil.utah.edu. Inner Ring: This is the measurement ring