NM CID GF-2 Practice Questions - New Mexico CID GF-2 Bridges Contractor Examination Exam

If NMDOT subgrade soil has a plasticity index of 15 or greater, moisture at compaction must be:

From optimum moisture to optimum moisture plus 4 percent From optimum minus 5 percent to optimum, same as low-PI soils Oven-dry At least 10 percent above optimum so the clay remains soft

Correct Answer:

From optimum moisture to optimum moisture plus 4 percent

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