Astm D338518 Pdf Portable Jun 2026
This test method cannot be used directly to calculate the true hydraulic conductivity (coefficient of permeability) of the soil. For soils with a hydraulic conductivity lower than 1 × 10⁻⁵ cm/s, the standard suggests referring to ASTM D5093 . The Concept of the Double-Ring Infiltrometer
Understanding ASTM D3385-18: The Standard Test Method for Infiltration Rate of Soils Using Double-Ring Infiltrometer
is the definitive international standard for field-measuring the infiltration rate of liquids into soils using a double-ring infiltrometer . Managed under the jurisdiction of ASTM Committee D18 on Soil and Rock , this active standard spans 8 pages and details the required engineering equipment, test setups, and formulaic calculations necessary to evaluate site drainage capacity. Civil engineers, hydrogeologists, and environmental scientists use the official ASTM D3385-18 Document to inform storm-water management design, agricultural irrigation layouts, and landfill liner efficiency. 1. What is the Core Purpose of ASTM D3385-18? astm d338518 pdf
Understanding ASTM D3385-18: Field Infiltration Rate of Soils Using Double-Ring Infiltrometer
When water infiltrates the ground, it tends to spread out laterally due to capillary forces and soil suction, not just downward via gravity. If you were to use a single ring, this lateral "edge effect" would lead to artificially high infiltration rate readings. By using two concentric rings: This test method cannot be used directly to
Understanding how water and other liquids move through the ground is foundational to civil, agricultural, and environmental engineering. The standard is the globally recognized protocol used to measure the rate of infiltration of liquid—typically water—into soils in the field.
While the official ASTM D3385-18 PDF contains granular safety precautions and specific tolerances, the operational workflow follows these critical phases: 1. Site Preparation Managed under the jurisdiction of ASTM Committee D18
: Results are calculated based on the amount of soil passing through the geotextile and are typically presented as a plot of percent passing versus particle size.
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