For engineers and technicians who eventually obtain the PDF, here is a condensed procedural overview:
In the mid-20th century, civil and geotechnical engineers faced a quiet but critical problem: how to measure the rate at which water could move through soil on-site, without digging it up and bringing it to a lab. Soils behave differently when disturbed. A lab test on a remolded sample might miss the cracks, roots, or layers that actually control water flow in the ground. astm d338518 pdf
: The standard requires two open cylinders, typically with diameters of 300 mm (inner) and 600 mm (outer) and a height of approximately 500 mm. Constant Head Method For engineers and technicians who eventually obtain the
Test principle and equipment
ASTM D3385-18 establishes a field procedure using a double-ring infiltrometer to measure the liquid infiltration rate of soils. This constant-head method helps determine vertical soil permeability for environmental and engineering projects by recording water volume over time. For more details, visit ASTM . Standard ASTM D3385-18 - Afnor EDITIONS : The standard requires two open cylinders, typically
Understanding groundwater recharge and potential canal or reservoir leakage.