NM CID GS-8 Practice Questions - New Mexico CID GS-8 Earthmoving, Excavation And Ditching Examination Exam

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A contractor places 18-inch loose lifts of lean clay and uses only a walk-behind vibratory plate. Density tests fail at the bottom of the lift. What is the most likely cause?

The plate's energy does not reach the bottom of an 18-inch clay lift Clay cannot be compacted by any means The nuclear gauge cannot be used on clay IBC requires all clay lifts to be 18 inches or thicker

Correct Answer:

The plate's energy does not reach the bottom of an 18-inch clay lift

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