Worked Example (5 Tasks)
Illustrative fixture (duration-weighted, equal calendars):
| Task | Duration days | Complete |
|---|---|---|
| A | 10 | 100% |
| B | 10 | 50% |
| C | 10 | 0% |
| D | 20 | 0% |
| E | 10 | 0% |
Total weight = 60 days. Earned weight = 10 + 5 = 15 → 25% cumulative physical-duration progress (illustrative). Platform series use the worker time-phasing rules for periodization — treat this as intuition, not a substitute for the worker output.