Astm D338518 Pdf ((exclusive)) -

When these calculations are compiled, technicians plot the infiltration rate ( ) on the Y-axis against cumulative elapsed time ( ) on the X-axis.

Key limitations and sources of error

= Volume of water added to the inner ring during the interval ( cm3cm cubed = Internal cross-sectional area of the inner ring ( cm2cm squared = Time interval ( hourshours minutesminutes The final result is usually expressed in inches per hour ( in/hrin/hr ) or centimeters per hour ( cm/hrcm/hr

ASTM D3385-18 establishes a standard field method for measuring soil infiltration rates using double-ring infiltrometers to assess hydraulic conductivity. This procedure involves maintaining a constant water head in concentric rings, measuring vertical water flow to determine the infiltration rate [1]. You can access the full standard through the ASTM website . astm d338518 pdf

Fabricated from smooth, rigid metal (such as steel or heavy-gauge aluminum). Inner Ring: Typically 300 mm (12 inches) in diameter. Outer Ring: Typically 600 mm (24 inches) in diameter.

To install the rings without disturbing the soil structure inside the measurement area, ASTM D3385-18 requires the use of a driving cap and a hammer or mallet. A backhoe may be required for larger, heavy-duty rings.

) for a given time interval is calculated using the formula: When these calculations are compiled, technicians plot the

Open metal cylinders, usually constructed from steel or aluminum, with a sharpened bottom edge to ease soil penetration.

The standard provides a rigorous procedure for the field measurement of soil infiltration rates using a double-ring infiltrometer. This method is essential for civil engineering and environmental projects, including the design of septic tank fields, irrigation systems, and stormwater management facilities. Understanding ASTM D3385-18

Evaluating potential septic-tank disposal fields and liquid waste disposal sites. You can access the full standard through the ASTM website

Determining optimal water application rates to maximize crop absorption and prevent surface runoff.

: Two concentric rings—usually a 12-inch (300 mm) inner ring and a 24-inch (600 mm) outer ring —driven into the soil to a specific depth.

The standard is the globally recognized benchmark for measuring the in-situ infiltration rate of liquids into soil . Managed by the ASTM Committee D18 on Soil and Rock , this specification establishes a uniform field protocol using a double-ring infiltrometer to capture accurate drainage properties. These measurements are critical for engineering civil infrastructure, stormwater management frameworks, and environmental containment designs.

: 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

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