Gently tamp the soil along the inside and outside edges of both ring walls to eliminate any artificial voids or paths created during driving. Place a thin layer of fine sand or a splash guard cloth inside the inner ring to prevent the incoming water from eroding or scouring the soil surface. Step 4: Adding Water and Maintaining Head
Used to monitor or automate the maintenance of a constant liquid level (head) inside the rings.
The document provides pre-formatted, industry-accepted tables and data layouts. These ensure field teams record all mandatory metadata, including soil temperature, water quality profiles, and precise site geometry.
Test principle and equipment
| Vendor | Format Options | Approximate Price (USD) | | :--- | :--- | :--- | | | PDF, Print | $57.00 - $71.00 | | Accuris (formerly IHS) | PDF, Print | ~$63.00 | | Techstreet | PDF, Print | $60.00 - $75.00 | | Intertek Inform | PDF, Print | ~$67.00 |
Here are several authorized vendors where you can find the standard, along with their estimated prices (noting that fees are subject to change):
: It is best suited for relatively uniform fine-grained soils. It may be unreliable in very pervious soils (hydraulic conductivity is greater than 10 to the negative 2 power cm/s) or very impervious soils ( ASTM International Operational Requirements Astm D3385-18 | PDF | Liquids | Soil - Scribd astm d338518 pdf
The primary goal of this standard is to measure the rate at which water (or another liquid) enters the soil surface. It is particularly useful for:
Typically an open cylinder that is at least 300 mm (approx. 12 in.) in diameter and at least 500 mm (approx. 20 in.) long.
The is an essential document for geotechnical engineers, environmental consultants, and construction quality control personnel. It provides a standardized, repeatable, and defensible method for measuring soil infiltration rate in the field. Gently tamp the soil along the inside and
Usually 12 inches (300 mm) in diameter. This is where the measurement takes place.
ASTM D3385-18, officially titled “Standard Test Method for Infiltration Rate of Soils in Field Using Double-Ring Infiltrometers,” serves as the industry benchmark for this measurement. By utilizing a concentric ring apparatus, the method aims to minimize lateral flow divergence, thereby providing a more accurate representation of the vertical hydraulic conductivity of the soil. This paper dissects the standard, offering guidance on its practical application and theoretical basis.
The purpose of the outer ring is to promote one-dimensional, vertical flow beneath the inner ring. This design ensures that water infiltrates primarily in the vertical direction within the inner ring, where the actual measurement takes place, while the outer ring minimizes lateral spreading of water that would otherwise distort the results. It may be unreliable in very pervious soils