Astm D338518 Pdf -

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.

Used for falling-head variations or manual logging.

ASTM D3385-18 is primarily designed for soils with a high to moderate permeability profile. It yields the most accurate, reproducible results in: Granular sand Silty sand Loam and sandy loam Peat and highly organic surface soils Critical Limitations

The primary objective of this standard is to determine the rate at which water penetrates the soil surface. While related to hydraulic conductivity , infiltration rate specifically accounts for immediate surface properties like cracks, biopores, and initial moisture conditions. Key Applications astm d338518 pdf

ASTM D3385-18 stands as the recognized standard for field infiltration testing in geotechnical engineering. Whether designing a septic system, managing agricultural water, or assessing environmental risks, understanding and correctly applying this standard is essential. By following the official guidelines and using authentic documentation, engineers can make informed decisions based on reliable soil infiltration data.

is the definitive international standard for field-measuring the infiltration rate of liquids into soils using a double-ring infiltrometer . Managed under the jurisdiction of ASTM Committee D18 on Soil and Rock , this active standard spans 8 pages and details the required engineering equipment, test setups, and formulaic calculations necessary to evaluate site drainage capacity. Civil engineers, hydrogeologists, and environmental scientists use the official ASTM D3385-18 Document to inform storm-water management design, agricultural irrigation layouts, and landfill liner efficiency. 1. What is the Core Purpose of ASTM D3385-18?

Always ensure you are using the most current version or the specific version mandated by your local building code or environmental protection agency. ASTM D3385-18 is primarily designed for soils with

The data obtained from ASTM D3385-18 testing is invaluable for engineers and designers in the selection and specification of geotextiles for various applications. By understanding the pore size distribution, professionals can:

Allow the soil to pre-wet if required by the site conditions, ensuring initial high-suction rates settle into a steady state. Step 4: Data Collection (Measurement)

The double-ring infiltrometer solves this problem by using two concentric rings: Key Applications ASTM D3385-18 stands as the recognized

: The testing procedure involves dry sieving of geotextile samples with soils of known gradation. The percentage of soil passing through the geotextile is related to the pore size distribution.

Understanding the revision history helps ensure you are using the correct version:

Knowing the infiltration rate is crucial for many applications. According to the standard, it has "application to such studies as liquid waste disposal, evaluation of potential septic-tank disposal fields, leaching and drainage efficiencies, irrigation requirements, water spreading and recharge, and canal or reservoir leakage".

The standard describes a field procedure using a double-ring infiltrometer—two concentric metal rings driven into the soil to measure the rate at which water moves downward through the soil profile. The infiltrometer is typically installed by driving it into the soil, though it can also be installed in a trench excavated in dry or stiff soils.

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).