D338518 Pdf — Astm

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Drive both rings into the ground to a depth of approximately 6 inches (15 cm). Use a driving cap and a heavy mallet or slide hammer to ensure the rings enter vertically without tilting or wobbling, which could break the soil-to-ring seal. Step 3: Sealing and Pre-Wetting

The standard is particularly applicable to relatively uniform fine-grained soils, with an absence of very plastic (fat) clays and gravel-size particles, and with moderate to low resistance to ring penetration.

Assessing irrigation requirements and leaching efficiencies. astm d338518 pdf

ASTM D3385-18 is a standardized field test method published by ASTM International (formerly known as the American Society for Testing and Materials). The full title is:

In the fields of geotechnical engineering, environmental science, and civil construction, understanding how water moves into the ground is critical. Whether you are designing a septic system, a stormwater management facility, an irrigation network, or a landfill cover, the rate at which soil absorbs water—known as the —is a fundamental parameter.

To properly execute the test according to the ASTM D3385-18 manual, specific equipment standards must be met: IHS Markit, Techstreet, and ANSI stores provide legitimate,

Drive the outer ring into the soil to a depth of at least 150 mm (6 in.). It is vital to minimize soil disturbance and prevent tilting.

The standard acknowledges that many factors affect the infiltration rate, including:

It dictates explicit corrections for environmental factors, such as ambient evaporation losses during hot weather testing and temperature-dependent water viscosity shifts. Step 3: Sealing and Pre-Wetting The standard is

: This standard covers the determination of the pore size distribution of geotextiles, which can be used to evaluate their filtration and permeability characteristics.

The water levels in both rings must be kept equal throughout the entire test to avoid horizontal pressure gradients. Step 5: Data Recording

Precise chronometers for capturing time intervals. 5. Step-by-Step Testing Procedure