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sci.soil-compaction-proctor Calculator
Calculates Proctor compaction test results to determine optimum moisture content (OMC) and maximum dry density from compaction curve data. Standard Proctor OMC ≈ 12–18% for silty clay — field compaction must achieve ≥ 95% of lab MDD for embankment and subgrade acceptance.
Inputs
Gamma D Kn M3
Body or object weight. For health calculators, usually in kg or lbs.
Gamma D Max Kn M3
Body or object weight. For health calculators, usually in kg or lbs.
Omc Pct
Reference formula or conversion factor shown for context.
Field Moisture Pct
Reference formula or conversion factor shown for context.
Results
relative compaction RC (%)
The value at the specified point or condition.
moisture deviation from OMC
The value at the specified point or condition.
RC = γd_field / γd_max × 100
Reference formula or conversion factor shown for context.
field acceptance
Sample size or count used in the calculation.
moisture status
Current state of the system, process, or metric — typically pass/fail, healthy/warning/critical, or a descriptive classification.
AASHTO T99 / ASTM D698
Reference formula or conversion factor shown for context.