Water is added to the borehole, raising the water level. Engineers measure the rate at which the water level drops as it seeps into the surrounding ground. This is ideal for low to medium-permeability soils like silts and fine sands.
As a geotechnical consultant, I regularly need ISO 22282-2 for specifying and interpreting open-system permeability tests (e.g., Lefranc, open-end, and packer tests without back pressure). The BS EN ISO version is the UK-adopted standard, so it’s identical to the international one but includes the UK foreword and national annex.
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The standard applies to tests conducted both in various geological conditions. Core Testing Methods
BS EN ISO 22282-2 is the British and European adoption of the international standard . It belongs to a multi-part series dedicated to geotechnical investigation and testing, specifically focusing on water permeability testing. Part 1: General rules Water is added to the borehole, raising the water level
This feature is structured to provide an overview for professionals in geotechnical engineering, civil engineering, and procurement who are looking to understand the scope and application of this standard.
Geotechnical engineering relies heavily on accurate subsurface data. When designing foundations, tunnels, or retaining structures, understanding how water moves through the ground is critical. is the internationally recognized standard that governs water permeability tests in a borehole using open systems.
A constant pressure is maintained by injecting water into the borehole, and the flow rate is measured once it stabilizes. B. Falling Head Test As a geotechnical consultant, I regularly need ISO
The standard details three primary methods for executing the tests:
: Predicting water ingress into excavations or through dams.