Civil Engineering Association

Dear hoxuantu,
ASTM D4945-08

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ASTM 4945-12 Standard Test Method for High-Strain Dynamic Testing of Deep Foundations

This dynamic test method covers the procedure for applying an axial impact force with a pile driving hammer or a large drop weight that will cause a relatively high strain at the top of an individual vertical or inclined deep foundation unit, and for measuring the subsequent force and velocity response of that deep foundation unit. High-strain dynamic testing applies to any deep foundation unit, also referred to herein as a “pile,” which functions in a manner similar to a driven pile or a cast-in-place pile regardless of the method of installation, and which conforms with the requirements of this test method.

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Civil Engineering Association

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