ISO 17892-11:2019 Geotechnical investigation and testing一Laboratory testing of soil – Part 11: Permeability tests. This document specifies methods for the laboratory determination of the water flow characteristics in soil. This document is applicable to the laboratory determination of the coefficient of permeability of soil within the scope of geotechnical investigations. NOTE This document fulfils the requirements of the determination of the coefficient of permeability of soils in the laboratory for geotechnical investigation and testing in accordance with EN 1997-1 and EN 1997-2. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 386, Liquid-in-glass laboratory thermometers — Principles of design, construction and use ISO 14688-1, Geotechnical investigation and testing — Identification and classification of soil — Part 1: Identification and description ISO 17892-1, Geotechnical investigation and testing — Laboratory testing of soil — Part 1: Determination of water content ISO 17892-2, Geotechnical investigation and testing — Laboratory testing of soil — Part 2: Determination of bulk density ISO 17892-3, Geotechnical investigation and testing — Laboratory testing of soil — Part 3: Determination of particle density 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain term inological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at http://www.electropedia.org/ 3.1 permeameter apparatus (cell) containing the test specimen in a permeability test 3.2 flow rate volume of water passing through a specimen per unit time 5 Apparatus 5.1 General The equipment shall undergo regular calibration, maintenance and checks as specified in Annex A. The permeability test arrangement requires a container for the specimen (the permea meter) which may have either rigid or flexible walls and a system for applying and measuring water pressures to either or both ends of the specimen. Schematics of some typical arrangements are shown in Figures 2 to 4. 5.2 Permeameters 5.2.1 General The minimum internal dimension (height and diameter) of the permeameter shall be at least six times the maximum particle size of the specimen. 5.2.2 Rigid wall permeameters 5.2.2.1 General Rigid wall permeameters shall be made of corrosion-resistant materials of sufficient rigidity to...
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