of soils using a double-ring infiltrometer. This method is most effective for relatively uniform, fine-grained soils and is typically used for applications like irrigation studies, septic field evaluations, and stormwater management. The University of Utah 1. Equipment and Site Preparation
The test proceeds by measuring the volume of water required to maintain a constant head in the inner ring over a set period. As the test continues, the infiltration rate typically decreases until it reaches a steady state. This final, constant rate is the standard measurement for the soil.
The ASTM D3385-18 test method involves a simple and straightforward procedure to measure the permeability of porous concrete. The test apparatus consists of: astm d338518 pdf
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 test procedure outlined in the involves several distinct steps: of soils using a double-ring infiltrometer
: The outer ring acts as a buffer zone, limiting the lateral spread of water so that the liquid in the inner ring infiltrates primarily in a vertical, one-dimensional direction. Standardized Apparatus
The legitimate cost (≈$60) is minor compared to the cost of a failed project or failed regulatory inspection. Equipment and Site Preparation The test proceeds by
Some libraries and institutions offer access to technical standards, including ASTM standards, through subscription services. You might find ASTM D3385-18 through such a service if available at your institution.
Always ensure you are using the most current version or the specific version mandated by your local building code or environmental protection agency.
The ASTM D3385-18 standard provides a detailed methodology for determining the pore size distribution of geotextiles by the dry sieving method. This method involves passing dry soil particles of known sizes through the geotextile sample and measuring the percentage of particles that pass through. The standard outlines the equipment requirements, sample preparation procedures, and testing protocols to ensure consistency and accuracy across different laboratories and testing conditions.
