Practice question

Per NMDOT 2019 Section 203.3.6, for soils with a plasticity index of 15 or greater, moisture at compaction shall be:

  1. Between oven-dry and 5 percent below optimum
  2. Between optimum moisture and optimum plus 4 percent
  3. At least 8 percent above optimum
  4. The same 5-percent-below to 2-percent-above window used for low-PI soils

Answer: B — Between optimum moisture and optimum plus 4 percent

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