Proctor Optimum Check
Extract actual sampled Proctor density maxima/ties, not an assumed interpolated optimum or compaction approval. Caller independently establishes units, regime, calibration and applicability; this does not establish design-code compliance, authenticity, operational safety, treatment efficacy or a validated forecast.
Description
A sampled Proctor comparison identifies the highest submitted dry-density point.
A sampled Proctor comparison identifies the highest submitted dry-density point.1
A sampled maximum is distinct from a fitted continuous optimum or a verified laboratory standard procedure. Use this tool to calculate proctor Optimum Check from the supplied measurements and assumptions.
When to use Proctor Optimum Check
Use this tool to calculate proctor Optimum Check from the supplied measurements and assumptions. Establish the SI units or caller unit basis, load signs, measurement interval, model conditions and independently chosen coefficients or references.
How to use Proctor Optimum Check and understand its results
- Establish the SI units or caller unit basis, load signs, measurement interval, model conditions and independently chosen coefficients or references.
- Enter measuredMoistureFractions, measuredDryDensitiesKgM3, observedFieldMoistureFraction, using the field meanings and rules below, then run the tool.
- Read bestObservedMoistureFractions, maximumObservedDryDensityKgM3, signedFieldMoistureMinusBest. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| measuredMoistureFractions | Measured moisture fractions | list of number | Required |
| measuredDryDensitiesKgM3 | Measured dry densities kg m3 | list of number | Required |
| observedFieldMoistureFraction | Observed field moisture fraction | number | Required |
Enter strictly increasing sampled moisture fractions in [0,1], aligned positive dry densities and field moisture in [0,1]. Return all samples with the maximum density, that density and field minus each best moisture fraction. No fitted continuous optimum or compaction acceptance rule is installed.
bestMoistures={w_i:density_i=maxDensity}; differences=fieldMoisture−bestMoistures Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| bestObservedMoistureFractions | Best Observed Moisture Fractions; follow the units, sign, ordering and evidence convention stated above | list of number |
| maximumObservedDryDensityKgM3 | Maximum Observed Dry Density Kg M3; follow the units, sign, ordering and evidence convention stated above | number |
| signedFieldMoistureMinusBest | Signed Field Moisture Minus Best; follow the units, sign, ordering and evidence convention stated above | list of number |
{
"input": {
"measuredMoistureFractions": [
0.1,
0.2,
0.3
],
"measuredDryDensitiesKgM3": [
1000,
1200,
1100
],
"observedFieldMoistureFraction": 0.22
},
"output": {
"bestObservedMoistureFractions": [
0.2
],
"maximumObservedDryDensityKgM3": 1200,
"signedFieldMoistureMinusBest": [
0.01999999999999999
]
}
}Limitations and assumptions
A sampled maximum is distinct from a fitted continuous optimum or a verified laboratory standard procedure. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Immediate Foundation Settlement Calculator for this related task: Immediate elastic settlement depends on pressure, footing width and a soil stiffness model.
Use Pavement Rutting Model Calculator when its separate inputs and assumptions fit the question: Layer rutting can be modeled by multiplying thickness by permanent strain.
References
-
Proctor Optimum Check — tool.io
Similar or alternative tools
- Immediate Foundation Settlement Calculator
Immediate elastic settlement depends on pressure, footing width and a soil stiffness model.
- Pavement Rutting Model Calculator
Layer rutting can be modeled by multiplying thickness by permanent strain.