Example of an Energy Calibration Report on a Standard Penetration Test (ASTM Standard D 1586–67) Drill Rig

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Courtesy of ASTM International

This note provides an example of an energy calibration report on standard penetration test equipment. This calibration was designed to determine a standard hammer drop height that would produce 2100 in.·lb (237 N·m) of compression wave energy entering the drill rods as a result of the average hammer blow when using drop procedures as ordinarily used for the rig under calibration.

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