Description
Divide bufferUsed by positive bufferTotal for bufferFraction, then divide by workCompleteFraction in (0, 1] for index.
Schedule differences use a common time coordinate and may preserve negative slack or lead times. A scalar lag or float term does not recalculate a full dependency network.
Divide bufferUsed by positive bufferTotal for bufferFraction, then divide by workCompleteFraction in (0, 1] for index.
When to use this tool
Use Project Buffer Consumption Index Term when you need one explicit scheduling or delay-budget component.
How to use the tool and how it works
- Enter bufferUsed, bufferTotal, workCompleteFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read bufferFraction, index. Use the output convention below.
Divide bufferUsed by positive bufferTotal for bufferFraction, then divide by workCompleteFraction in (0, 1] for index.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| bufferUsed | Buffer Used | Required. Finite number; minimum 0. |
| bufferTotal | Buffer Total | Required. Finite number; strictly above 0. |
| workCompleteFraction | Work Complete Fraction | Required. Finite number; maximum 1; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| bufferFraction | Buffer Fraction | Required. Finite number. |
| index | Index | Required. Finite number. |
{
"input": {
"bufferUsed": 4,
"bufferTotal": 10,
"workCompleteFraction": 0.5
},
"output": {
"bufferFraction": 0.4,
"index": 0.8
}
}Limitations and assumptions
- Buffer use is bounded by total; this is a supplied progress ratio without forecasting, policy thresholds, or uncertainty.
- 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 complete dependency plan and working calendar to assess critical paths, resource constraints, and completion forecasts.
References
Similar or alternative tools
- Milestone Delay Float Consumption
Use min(delayDays, totalFloat) for consumedFloat, max(0, totalFloat - delayDays) for remainingFloat, and the reverse excess for unabsorbedDelay.
- Critical Ratio Remaining Work Days
Divide signed daysToDue by positive remainingWorkDays for criticalRatio and subtract remaining work from days to due for slackDays.