SYMPOSIA PAPER Published: 01 January 1970

Suggested Method of Test for Capillary-Moisture Relationships for Soils by Pressure-Membrane Apparatus (Moisture Tensions between 1 and 15 atm)


This method covers determination of capillary-moisture relationships for fine-textured soils as indicated by the soil-moisture tension relations determined by pressure membrane apparatus using tensions between 1 and 15 atm. Moisture tension is defined as the equivalent negative gage pressure, or suction, in soil moisture. The test result is a moisture content which is a measure of the water retained in the soil subjected to a given soil-water tension (or at an approximately equivalent height above the water table).

Author Information

Johnson, AI
U. S. Geological Survey, Denver, Colo.
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Developed by Committee: D18
Pages: 180–186
DOI: 10.1520/STP38502S
ISBN-EB: 978-0-8031-5570-1
ISBN-13: 978-0-8031-0051-0