a) dynamic test method of large deformation was carried by the acquisition and analysis of data about the forces and stresses of the pile under the effect of the shock to the pile's load rating, speed, consistency and correlation of weak-load;b) pile testing work similar to the work of Pat back after finishing construction piles;c) test piles under large deformation method is a method of non-destructive testing, fast aims to ensure this pile still meet on after trying working conditions;d) this method can be done when the stakes were "rested" from time to time prescribe;e) test method of large deformation dynamic need two sensors for measuring stress and two sensors measure acceleration to the body of the pile, at the location have a minimum distance equal to 1.5 times the diameter of the pile under pile-head side, try; f) conducting suitable test according to ASTM D 4945-2012 and the content of the regulations on the requirements at the nail technician of the project.
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