: The standard references several other ASTM standards and documents, including those on geotextile sampling and conditioning.
ASTM D3385-18, officially titled “Standard Test Method for Infiltration Rate of Soils in Field Using Double-Ring Infiltrometers,” serves as the industry benchmark for this measurement. By utilizing a concentric ring apparatus, the method aims to minimize lateral flow divergence, thereby providing a more accurate representation of the vertical hydraulic conductivity of the soil. This paper dissects the standard, offering guidance on its practical application and theoretical basis. astm d338518 pdf
The ASTM D3385-18 PDF report provides a standardized approach for determining the infiltration rate of soil, which is essential for: : The standard references several other ASTM standards
| Standard | Focus | Key Difference | |----------|-------|----------------| | | Field infiltration using single-ring infiltrometer | No outer ring; corrects for lateral flow mathematically. | | ASTM D5126 | Laboratory measurement of hydraulic conductivity (constant head) | Uses undisturbed soil cores. | | ASTM D3385 (older versions) | Same method but outdated references | No longer compliant with current specs. | | ISO 14388-2 | Double-ring infiltrometer (international version) | Different ring dimensions and reporting format. | This paper dissects the standard, offering guidance on
Usually 12 inches (300 mm) in diameter. This is where the measurement takes place.
The standard provides a rigorous procedure for measuring the infiltration rate of soils in the field using a double-ring infiltrometer. This method is essential for civil engineers, hydrologists, and environmental scientists to determine how quickly water penetrates a site's soil—a critical factor for designing drainage systems, septic fields, and irrigation networks. Overview of ASTM D3385-18
: It may produce unreliable results in very pervious soils (hydraulic conductivity >10-2is greater than 10 to the negative 2 power cm/s) or very impervious soils (