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Astm D338518 Pdf Instant
Select a flat, undisturbed area. Gently clear away loose surface debris, heavy vegetation, and thatch. Avoid excavating or scraping deeply, as this alters the natural bulk density and structural porosity of the topsoil layer. Step 2: Driving the Rings
ASTM D3385-18 establishes a standard field procedure for measuring soil infiltration rates using a double-ring infiltrometer, essential for engineering applications like waste disposal and stormwater management. It is best suited for uniform, fine-grained soils where a constant head of liquid is maintained to measure downward vertical flow. For complete technical specifications, visit ASTM International .
To properly execute the test according to the ASTM D3385-18 manual, specific equipment standards must be met:
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 d338518 pdf
The ASTM D3385-18 test method is widely used in various fields, including:
Usually 24 inches (600 mm) in diameter. It acts as a buffer to limit the lateral spread of water, ensuring that water from the inner ring moves in a one-dimensional, vertical flow for more accurate results. Test Procedure and Methodology
The standard acknowledges that many factors affect the infiltration rate, including: Select a flat, undisturbed area
. It is ideal for granular soils, loams, and sandy mixtures, but less suited for very stiff clays or highly fractured rock. Why Use a Double-Ring Infiltrometer?
ASTM standards are continuously reviewed, updated, and reapproved to reflect modern engineering practices. The "-18" in the designation means that the current active version was last substantively reviewed or updated in 2018.
Data interpretation and reporting
= Infiltration rate (typically expressed in mm/hour or cm/hour).
Executing an ASTM D3385-18 compliant test requires standardized field equipment to ensure repeatability and data integrity. 1. The Rings Typically 300 mm (12 inches) in diameter. Outer Ring: Typically 600 mm (24 inches) in diameter.
Understanding ASTM D3385-18: Standard Test Method for Infiltration Rate of Soils in Field Using Double-Ring Infiltrometer Step 2: Driving the Rings ASTM D3385-18 establishes
When designing septic drain fields , engineers need to know exactly how fast wastewater will dissipate into the surrounding ground. The double-ring test prevents system failures and environmental contamination.