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EN ISO 22476-7:2012

Geotechnical investigation and testing - Field testing - Part 7: Borehole jack test (ISO 22476-7:2012) EN ISO 22476-7:2012

Publication date:   May 17, 2013

General information

60.60 Standard published   Dec 1, 2012

CEN

CEN/TC 341 Geotechnical Investigation and Testing

European Norm

93.020   Earthworks. Excavations. Foundation construction. Underground works

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Scope

ISO 22476-7:2012 specifies the equipment requirements, execution of and reporting on borehole jack tests.
It specifies the procedure for conducting a borehole jack test in ground stiff enough not to be adversely affected by the drilling operation. Two diametral cylindrical steel loading plates are placed in the ground and opened by pressure. Pressure applied to, and associated opening of, the probe are measured and recorded so as to obtain a stress-displacement relationship of the ground for the range of the expected design stress.
ISO 22476-7:2012 applies to test depths of < 100 m and to testing either on land or off-shore.

Life cycle

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PUBLISHED
EN ISO 22476-7:2012
60.60 Standard published
Dec 1, 2012