What does field density testing compare against?
Correct Answer
D) The specified compaction requirement based on laboratory moisture-density data
Field density tests are compared to specified compaction requirements, often based on Proctor data.
Why This Is the Correct Answer
Field density tests are compared to specified compaction requirements, often based on Proctor data.
Why the Other Options Are Wrong
Option A: Compare field density only with the contractor's visual proof-roll result
Choice A gives Door swing. Its specific error: the option shifts to a different trade task; the tested Field density control function or field correction is The specified compaction requirement based on laboratory moisture-density data.
Option B: Treat the item as a closeout correction tied to field density control
Choice B (Bid protest timing) is rejected because it shifts the question into contract administration money flow.
Option C: Compare field density with fill delivery tickets rather than an in-place test result
In site construction, Fire damper access is the wrong selection for Field density control: the option does not produce the required Field density control outcome, The specified compaction requirement based on laboratory moisture-density data.
Memory Technique
Make field density control a purpose cue; if the choice changes the purpose, it cannot be The specified compaction requirement based on laboratory moisture-density data.
Reference Hint
Open Pipe and Excavation Contracting, 2011; use by topic index - bedding / backfill / compaction to confirm that Field density tests are compared to specified compaction requirements, often based on Proctor data.
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