<< Click to Display Table of Contents >> Navigation:  Chapter 9 Geotechnical Data Management > Geotechnical Tests > Entering Test Data > Soil and Aggregates Tests > Falling Head Permeability

This test is used to determine the coefficient of permeability (hydraulic conductivity) of granular soils using a falling head. This test applies to one-dimensional laminar flow of water through porous, water-saturated, soils.

 

Data entry and calculations for this test are performed on the Falling Head Permeability form described in the next section. After the data and calculations have been performed the results are displayed in a test report as described in the reporting section below. The format of this report is controlled by the geotechnical template used for the test.

 

The methodology and calculations for this test adhere to "ASTM D5084-03 Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter", Method B. For more detailed information on the methodology and calculations please review this standard.