Astm D338518 Pdf !!exclusive!! Page

Civil engineering projects require strict adherence to code standards. Citing the official ASTM document protects projects from liabilities and ensures approval from municipal building departments and environmental protection agencies.

The ASTM D3385-18 Standard Test Method quantifies the over a given timeframe. This index value is called the incremental infiltration velocity, usually calculated and reported in centimeters per hour (cm/h) or inches per hour (in/h). Scope and Limitations

: To measure the rate at which a liquid (typically water) enters the soil surface.

The standard is best for "relatively uniform fine-grained soils, with an absence of very plastic (fat) clays and gravel-size particles". It is suitable for soils with a hydraulic conductivity between approximately .

The is the core apparatus. It consists of two concentric metal rings driven into the soil. Water is maintained at a constant level in both rings. The inner ring measures the vertical infiltration rate, while the outer ring creates a buffer zone to minimize lateral spread of water, ensuring that flow in the inner ring is predominantly one-dimensional (vertical). astm d338518 pdf

Test principle and equipment

Hook gauges, float valves, or graduated scales to measure water volume or level drops over precise increments of time. Step-by-Step Testing Methodology

Thermometers (to record water temperature, as temperature heavily influences fluid viscosity) Step-by-Step Testing Procedure

A single-ring infiltrometer often overestimates infiltration rates because water diverges laterally (sideways) once it passes the bottom edge of the ring. The double-ring design solves this issue: Civil engineering projects require strict adherence to code

You can buy the ASTM D3385-18 standard directly from ASTM International through their official website ( www.astm.org ).

To legally utilize this standard for certified engineering reports, access to the official document is necessary. The full standard includes precise dimensional drawings of the apparatus, data sheet templates, and specific quality assurance controls.

While summaries provide a conceptual overview, relying on third-party guides for regulatory compliance, engineering reports, or forensic litigation can introduce severe errors. Accessing the official provides several critical advantages:

Usually around 20 inches (50 cm), allowing them to be driven into the ground while retaining a head of water. This index value is called the incremental infiltration

Understanding how water and other liquids move through the ground is foundational to civil, agricultural, and environmental engineering. The standard is the globally recognized protocol used to measure the rate of infiltration of liquid—typically water—into soils in the field.

The rings are filled, and the drop in water level over time is measured. (Note: Constant head is more widely utilized for standardized ASTM D3385 testing). 5. Achieving Steady-State

While the double-ring method is highly effective, users must acknowledge its physical limits:

Many engineering firms, university libraries, and government agencies maintain corporate subscriptions to the ASTM Compass platform, allowing staff to download the PDF dynamically.