Describes methods for the determination of pore water pressure (point measurements) in unsaturated and saturated soil using tensiometers. Applicable for in situ measurements in the field and, e. g. soil cores, used in experimental examinations.
Tämän julkaisun valmistelusta Suomessa vastaa Suomen ympäristökeskus, puh. 040 724 8795.
Sisällysluettelo
Foreword
1 Scope
2 Definitions
3 Principle
4 Apparatus
4.2 Tensiometer construction
5 Procedure
5.1 Installation of tensiometers
5.2 Preparation of tensiometers for use
5.3 Reading tensiometers
5.4 Servicing and maintenance of tensiometers
6 Expression of results
6.1 Method of calculation
6.2 Precision
7 Test report
Annex A Construction and use of mercury manometers (normative)
Annex В Tensiometer materials and construction (informative)
Annex С Examples of pressure sensors other than mercury manometers (informative)
Annex D Field installation of tensiometers (informative)
Annex Ε Relation of pore water pressure and hydraulic pressure, and calculation from tensiometer measurements (informative)