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ISO 22282-5 1st Edition, June 1, 2012 Geotechnical investigation and testing - Geohydraulic testing - Part 5: Infiltrometer tests
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 22282 establishes requirements for ground
investigations by means of infiltrometer tests as part of
geotechnical investigation services in accordance with EN 1997-1
and EN 1997-2.
It applies to the in situ determination of the water
permeability of an existing geological formation or of treated or
compacted materials.
The infiltrometer test is used to determine the infiltration
capacity of the ground at the surface or shallow depth. It is a
simple test for determining the permeability coefficient. The
method can be applied using either steadystate or transient
conditions, in saturated or unsaturated soils.
The principle of the test is based on the measurement of a
surface vertical flow rate of water which infiltrates the soil
under the influence of a positive hydraulic head.
Surface infiltration devices include single and double-ring
infiltrometer designs of the open or closed type.
The measurement devices and measurement procedures are adapted
to different ranges of permeability. Open systems are adapted to
permeability ranges from 10−5 to 10−8 m/s and
closed systems for permeability lower than 10−8.
Depending on the environmental conditions and the water
permeability of the soil, a duration of a few minutes to a few days
is needed to run the test.
This part of ISO 22282 defines the terminology and the measured
parameters. It specifies the required characteristics of the
equipment, defines the procedures of the tests relating to the
different measurement techniques and specifies the tests
results.
It is applicable to:
— civil engineering projects;
— hydrogeology studies; and
— waste storage.