Astm D338518 Pdf -
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Infiltration Rate of Soils in Field Using Double-Ring Infiltrometer1 astm d338518 pdf
Testers maintain a constant water level (head) throughout the duration of the test.
Infiltration occurs when water at the soil surface enters the pores of the soil matrix. The rate at which this occurs is influenced by soil texture, structure, bulk density, initial moisture content, and the presence of vegetation or cracks. Initially, when soil is dry, the infiltration rate is high due to capillary suction (matric potential). As the soil saturates, gravity becomes the dominant force, and the infiltration rate stabilizes, approaching the saturated hydraulic conductivity ($K_sat$) of the soil. If you need help with specific details of
The test may be conducted at the ground surface or at given depths in pits, and on bare soil or with vegetation in place, depending on the conditions for which infiltration rates are desired. However, the test cannot be conducted where the test surface is below the groundwater table or perched water table.
ASTM standards are copyrighted materials protected under U.S. and international law. The official ASTM D3385-18 PDF is available through multiple authorized channels. Understanding these options helps ensure you obtain legitimate, current versions of the standard. Infiltration Rate of Soils in Field Using Double-Ring
Infiltration rates determine irrigation efficiencies, helping farmers design center-pivot or flood irrigation layouts that minimize water logging and surface runoff.
This comprehensive guide breaks down the purpose, methodology, and technical specifications outlined in the ASTM D3385-18 PDF document. What is ASTM D3385-18?
This test method is suitable for soils with hydraulic conductivity between approximately 1 × 10⁻⁵ cm/s and 10⁻² cm/s. For soils with hydraulic conductivity less than 1 × 10⁻⁵ cm/s, users should refer to Test Method D5093 (Field Measurement of Infiltration Rate Using a Double-Ring Infiltrometer with a Sealed-Inner Ring).