I’m unable to provide or share the actual PDF file for (note the correct numbering—often "D3385," not "D338518") because it is a copyrighted document owned by ASTM International. However, I can tell you a proper story about this standard: what it is, why it exists, and how it's used.
The standard outlines the following test methods: astm d338518 pdf
Infiltration Rate of Soils in Field Using Double-Ring Infiltrometer1 15 Apr 2018 — ASTM D3385-18 I’m unable to provide or share
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. why it exists