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  • BSI
    BS EN ISO 11276:2014, ISO 11276:1995 Soil quality. Determination of pore water pressure. Tensiometer method
    Edition: 2014
    $435.35
    / user per year

Description of BS EN ISO 11276:2014 2014

This International Standard specifies methods for the determination of pore water pressure in both unsaturated and saturated soil using tensiometers. The methods are applicable for in situ pore water pressure measurements in the field, as well as for monitoring pore water pressure in, for example, plant containers or soil cores used in experimental procedures.

At normal atmospheric pressures, i.e. about 100 kPa, the application of these methods is limited to a range of pressures down to about – 85 kPa. The range is reduced at lower atmospheric pressures. Tensiometers will not function if sub-zero temperatures occur at the measurement depth. Their accuracy is influenced by soil and air temperature fluctuations. Tensiometer response time ranges from a few seconds to several days. To obtain reliable measurements under field conditions, tensiometers require frequent servicing.

A tensiometer provides point measurements of pore water pressure. To measure pore water pressure at different depths, several tensiometers will be necessary. In the field, replicate sets of instruments will be required if the spatial variability of the soil is to be allowed for.



Applicable to both saturated and unsaturated soils.

Standard NumberBS EN ISO 11276:2014, ISO 11276:1995
TitleSoil quality. Determination of pore water pressure. Tensiometer method
StatusUnder Review
Publication Date2014-05-31
Identical National Standard OfISO 11276:1995, EN ISO 11276 (ISO 11276:1995) AS
CorrectsBS 7755-5.1:1996
DescriptorsPhysical property measurement, Quality, Soil science, Physical properties of soils, Testing conditions, Precision, Pressure measurement (fluids), Hydraulic tests, Pressure testing, Soils, Soil testing, Test equipment, Mathematical calculations, Soil-testing equipment
ICS13.080.20 Physical properties of soils
CommitteeEH/4
ISBN978 0 580 82149 3
PublisherBSI
Pages24

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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