ASTM D3385 is the standard test method for measuring the infiltration rate of soils in the field using a double-ring infiltrometer. It provides a consistent way to evaluate how quickly water enters soil under field conditions, which is important for drainage assessment, site planning, and related engineering decisions. By using a recognized ASTM standard, users can support more reliable testing, clearer comparisons, and better quality control when working with soil infiltration data.

What is ASTM D3385?

ASTM D3385 describes a field test method for determining the infiltration rate of soils with a double-ring infiltrometer. The title indicates a practical soil testing procedure focused on water movement into the ground rather than laboratory analysis. This standard is commonly used when a project needs a repeatable way to observe infiltration behavior at a site and document results in a structured, technically accepted format. It helps define the testing approach for consistent field measurements.

Where is ASTM D3385 used?

This standard is typically used in field investigations where soil infiltration performance must be measured directly at the site. It is relevant for projects involving drainage evaluation, land development, irrigation planning, or other civil and geotechnical workflows that depend on soil-water interaction. The double-ring infiltrometer method is suited to on-site testing conditions, making ASTM D3385 useful for engineers, consultants, and testing personnel who need practical infiltration data for technical review or project documentation.

Why is ASTM D3385 important?

ASTM D3385 matters because infiltration results can influence design decisions, site suitability, and water management planning. A recognized test method supports consistency in how measurements are collected and reported, which helps reduce uncertainty during comparisons or procurement reviews. It also gives teams a common technical reference for field testing, improving confidence in soil performance data and helping support compliance-focused documentation, quality control efforts, and risk-aware engineering decisions.

• Field measurement of soil infiltration rate
• Double-ring infiltrometer test method
• Supports drainage and site evaluation work
• Useful for consistent field documentation
• Common reference for soil-water testing