Description
Multiply observedTime by positive ratingFactor for normalTime.
Work-time accounting separates productive time, allowances, overlap, and delays. Changing the allowance denominator or moving work outside downtime changes the interpretation of a calculated time.
Multiply observedTime by positive ratingFactor for normalTime.
When to use this tool
Use Time Study Rating Allowance Factor when you need one explicit work-element or timing component.
How to use the tool and how it works
- Enter observedTime, ratingFactor, allowanceFraction, allowanceOfNormal. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read normalTime, standardTime. Use the output convention below.
Multiply observedTime by positive ratingFactor for normalTime. Apply allowanceFraction as a multiplier of normal time or as a fraction of total time for standardTime.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| observedTime | Observed Time | Required. Finite number; minimum 0. |
| ratingFactor | Rating Factor | Required. Finite number; strictly above 0. |
| allowanceFraction | Allowance Fraction | Required. Finite number; minimum 0; strictly below 1. |
| allowanceOfNormal | Allowance Of Normal | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| normalTime | Normal Time | Required. Finite number. |
| standardTime | Standard Time | Required. Finite number. |
{
"input": {
"observedTime": 10,
"ratingFactor": 1.2,
"allowanceFraction": 0.2,
"allowanceOfNormal": true
},
"output": {
"normalTime": 12,
"standardTime": 14.399999999999999
}
}Limitations and assumptions
- Allowance is in [0, 1) and the basis is explicit; ratings, worker capability, and lawful or safe work standards are not determined.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a validated task study and resource plan, considering variability, ergonomics, and safe work requirements.
References
Similar or alternative tools
- Work Element Time Allowance
For a basic-time allowance multiply basicTime by 1 + allowanceFraction.
- Unit Production Time Factor
Divide nonnegative batchTime by positive integer batchUnits for timePerUnit.