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

In a narrow utility trench, which handheld compactor is generally preferred for cohesive (clayey) backfill?

Vibratory plate only, because clay always densifies by vibration Rammer (jumping jack), because impact and high unit pressure remold clay Smooth-drum highway roller inside the trench A garden hose with no mechanical compaction

Correct Answer:

Rammer (jumping jack), because impact and high unit pressure remold clay

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