Astm D338518 Pdf ❲Simple ★❳

The values stated in SI units are regarded as the standard. Inch-pound units given in parentheses are mathematical conversions provided for information purposes only and are not considered standard.

Record the water level or volume consumed at regular, frequent time intervals (e.g., every 5, 10, 15, or 30 minutes).

Infiltration rate is a critical parameter in civil engineering, hydrology, environmental science, and agricultural planning. It dictates how water moves from the surface into the soil matrix, influencing stormwater management system designs, wastewater disposal viability, and irrigation schedules.

The test procedure outlined in the involves several distinct steps: astm d338518 pdf

Serves as the actual measurement zone. Because lateral flow is restricted by the outer ring's buffer, the water drop in the inner ring reflects true, one-dimensional vertical infiltration. Technical Specifications and Apparatus

While highly effective, ASTM D3385-18 is not universally applicable. Engineers must be aware of its limitations:

Hook gauges, float valves, or graduated scales to measure water volume or level drops over precise increments of time. Step-by-Step Testing Methodology The values stated in SI units are regarded as the standard

ASTM D3385-18 outlines the specific field procedure for measuring the flux of water into soil. The "18" in the designation indicates the standard was last updated or reapproved in 2018.

: In some cases, pre-soaking the soil is recommended to reach saturation before formal measurement begins. ASTM International 2. Ring Installation

The outer ring creates a buffer of saturated soil, forcing the water from the inner ring to flow rather than spreading out laterally. This promotes the "one-dimensional, vertical flow" crucial for isolating the infiltration rate of the soil itself. By maintaining a constant water level and measuring the volume of water needed to do so, you get a direct measure of the infiltration rate. Infiltration rate is a critical parameter in civil

Standard Test Method for Infiltration Rate of Soils in Field Using Double-Ring Infiltrometer

In clean gravel or highly fractured rock formations, water drains instantly out of the rings, making it impossible to maintain a measurable hydraulic head.