Description
Return buffer/(buffer+task) as bufferShareOfCombined and buffer/task as bufferToTaskRatio.
Capacity accounting compares available supply with commitments, reservations, or demand. Negative residuals can expose overload while zero capacity requires a distinct undefined utilization state.
Return buffer/(buffer+task) as bufferShareOfCombined and buffer/task as bufferToTaskRatio.
When to use this tool
Use Project Buffer Task Share when you need a transparent resource or workload capacity term.
How to use the tool and how it works
- Enter bufferHours, taskHours. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read bufferShareOfCombined, bufferToTaskRatio. Use the output convention below.
Require nonnegative bufferHours and positive taskHours. Return buffer/(buffer+task) as bufferShareOfCombined and buffer/task as bufferToTaskRatio.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| bufferHours | Buffer Hours | Required. Finite number; minimum 0. |
| taskHours | Task Hours | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| bufferShareOfCombined | Buffer Share Of Combined | Required. Finite number. |
| bufferToTaskRatio | Buffer To Task Ratio | Required. Finite number. |
{
"input": {
"bufferHours": 4,
"taskHours": 16
},
"output": {
"bufferShareOfCombined": 0.2,
"bufferToTaskRatio": 0.25
}
}Limitations and assumptions
- The two fractions have different denominators; this does not choose an appropriate schedule contingency or completion confidence.
- 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
Validate calendars, skill constraints, and concurrent demand with the actual resource plan.
References
Similar or alternative tools
- Task Effort Duration Utilization Crosswalk
Divide effort by available hours times utilization for durationDays.
- Share Denominator Reversal Pair
Require both amounts positive and return firstAmount/secondAmount and its reciprocal.