To properly execute the test according to the ASTM D3385-18 manual, specific equipment standards must be met:
For designing stormwater management systems, such as bioretention cells or permeable pavement sub-bases, accurate infiltration rates dictate the required footprint and capacity of the drainage infrastructure. How to Access the ASTM D3385-18 Standard
Note: Always ensure you are using the most current revision (indicated by the "-18" for the 2018 revision) to ensure compliance with current industry standards. astm d338518 pdf
The legitimate cost (≈$60) is minor compared to the cost of a failed project or failed regulatory inspection.
While highly accurate for its intended scope, ASTM D3385-18 has limitations: To properly execute the test according to the
A single ring driven into the ground allows water to diverge laterally (sideways) once it clears the bottom of the ring. This lateral spread causes an overestimation of the true vertical infiltration rate. The double-ring setup solves this problem:
The ASTM D3385-18 method is highly specialized and not suitable for all soil conditions: While highly accurate for its intended scope, ASTM
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?
Here are several authorized vendors where you can find the standard, along with their estimated prices (noting that fees are subject to change):
Forces the water within it to flow strictly vertically. Measurements are taken exclusively from the inner ring to isolate the true, one-dimensional vertical infiltration rate. Technical Specifications and Equipment