Astm D338518 Pdf Link
ASTM D3385-18 outlines the field procedure for measuring soil infiltration rates using a double-ring infiltrometer to evaluate liquid penetration, particularly for engineering and environmental applications. This standard test method maintains a constant hydraulic head in concentric rings to measure one-dimensional vertical flow in relatively uniform, fine-grained soils. Purchase the official standard and obtain the PDF from ASTM International .
The ASTM D3385-18 standard provides a detailed methodology for determining the pore size distribution of geotextiles by the dry sieving method. This method involves passing dry soil particles of known sizes through the geotextile sample and measuring the percentage of particles that pass through. The standard outlines the equipment requirements, sample preparation procedures, and testing protocols to ensure consistency and accuracy across different laboratories and testing conditions. astm d338518 pdf
Today, D3385-18 is still the go-to field method. It’s not glamorous. It involves buckets, stopwatches, and a lot of waiting. But it tells a simple truth about the ground beneath our feet: how fast it drinks water. And that truth underpins safe foundations, clean water, and sustainable land use. ASTM D3385-18 outlines the field procedure for measuring