: Devices must be accurate to within 0.01 meters .
: All instruments must be calibrated before use, and these records must be included in the final test report. Implementation and Reporting bs en iso 22282-2 pdf
The full technical document is a copyrighted publication and is usually obtained through official standards bodies or technical libraries: ISO 22282-2:2012 - Geotechnical investigation and testing : Devices must be accurate to within 0
A standard-compliant investigation requires two distinct reports: It defines the requirements and procedures for determining
The standard is a critical document for civil engineers, hydrogeologists, and geotechnical contractors. It defines the requirements and procedures for determining the local water permeability of soil and rock using open systems within a borehole . Unlike closed systems that use packers to isolate sections under pressure, open systems typically involve measurements where the water surface is open to atmospheric pressure. Scope and Purpose of the Standard
The standard applies to tests conducted both in various geological conditions. Core Testing Methods
: An instantaneous change in the water level (head) is induced—either by adding water (falling head) or removing it (rising head)—and the rate at which the level returns to its original state is recorded. Constant Head Method :