Examples
Examples
Try the starting example
- Sequential tasks: ID, supplied metres, measured metres/person-hour
- Brush,200,10 Drain,100,5
- Supplied crew people
- 4
- Available crew-clock hours per workday
- 6
- First possible work date
- 2026-10-19
- Work weekdays Monday 1 through Sunday 7
- 1,2,3,4,5
- Excluded work dates, comma-separated, or none
- none
- Required crew-clock hours by task
- Brush: 5; Drain: 5
- Required modeled workdays
- 2
- Modeled last work date
- 2026-10-20
- Total person-hours under supplied linear rates
- 40
- Sequential crew-clock hours allocated by date/task
- 2026-10-19/Brush: 5; 2026-10-19/Drain: 1; 2026-10-20/Drain: 4
Try another scenario
- Sequential tasks: ID, supplied metres, measured metres/person-hour
- Brush,200,10 Drain,100,5
- Supplied crew people
- 5
- Available crew-clock hours per workday
- 6
- First possible work date
- 2026-10-19
- Work weekdays Monday 1 through Sunday 7
- 1,2,3,4,5
- Excluded work dates, comma-separated, or none
- none
- Required crew-clock hours by task
- Brush: 4; Drain: 4
- Required modeled workdays
- 2
- Modeled last work date
- 2026-10-20
- Total person-hours under supplied linear rates
- 40
- Sequential crew-clock hours allocated by date/task
- 2026-10-19/Brush: 4; 2026-10-19/Drain: 2; 2026-10-20/Drain: 2
Calculation method
Calculation method
Required crew-clock hours by task
Task metres/(measured metres/person-hour×people), rounded up to a whole crew-minute.
Required modeled workdays
Ceil(total rounded crew-minutes/floor(available daily hours×60)); zero total needs zero days.
Modeled last work date
Roll start to a supplied working date, then allocate consecutive working days under supplied exclusions.
Total person-hours under supplied linear rates
Total rounded crew-clock hours×people.
Sequential crew-clock hours allocated by date/task
Fill each workday with input-order task crew-minutes; no task is split across simultaneous crews.
Symbols and units
- a
- Sequential tasks: ID, supplied metres, measured metres/person-hour
- b
- Supplied crew people
- c
- Available crew-clock hours per workday
- d
- First possible work date
- e
- Work weekdays Monday 1 through Sunday 7
- f
- Excluded work dates, comma-separated, or none
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A linear measured-output work allocation scenario, not a crew-safety, terrain-access or engineering assessment. All crew members are modeled on one sequential task at a time; overhead and productivity interactions must already be reflected in supplied rates.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: ratios and rates; all itinerary rates, limits and scenario rules are supplied inputs ↗
Background reading; this does not imply endorsement or independent review of SumFizz.