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

How does the rubber-balloon field density test (ASTM D2167) measure the volume of the test hole?

By driving a thin-wall cylinder and using the cylinder's internal volume By pressing a water-filled rubber membrane into the hole and reading the displaced volume By counting the blows of a standard Proctor hammer By measuring the unconfined compressive strength in tsf

Correct Answer:

By pressing a water-filled rubber membrane into the hole and reading the displaced volume

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