BS EN ISO 22476-4:2012 PDF

BS EN ISO 22476-4:2012 specifies the equipment requirements, execution of and reporting on the Ménard pressuremeter test. The Ménard pressuremeter test is performed by the radial expansion of a tricell probe placed in the ground. During the injection of the liquid volume in the probe, the inflation of the three cells first brings the outer cover of the probe into contact with the pocket wall and then presses on them resulting in a soil displacement. Pressure applied to and the associated volume expansion of the probe are measured and recorded so as to obtain the stress-strain relationship of the soil as tested. Contents for BS EN ISO 22476-4:2012 includes: Scope Normative references Terms, definitions and symbols Terms and definitions Symbols Equipment General description Pressuremeter probe Pressure and volume control unit (CU) Connecting lines Injected liquid Measurement and control Data logger Test procedure Assembling the parts Calibration and corrections Pressuremeter pocket and probe placing Preparation for testing Establishing the loading programme Establishing the differential pressure Expansion Back-filling of the pockets Safety requirements Test results