Ecology invasive removal workload calculator

Calculate patch workload and sequential completion day and total worker-hours with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use patch workload and sequential completion day and total worker-hours to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Removal patches [ID,area m²,measured rate m² per worker-hour]
[["A",100,10],["B",80,8]]
Crew workers
2
Usable access hours per day
4
Patch workload and sequential completion day
[["A",10,2],["B",10,3]]
Total worker-hours
20
Workdays needed
3

Try another scenario

Removal patches [ID,area m²,measured rate m² per worker-hour]
[["A",100,10],["B",80,8]]
Crew workers
3
Usable access hours per day
4
Patch workload and sequential completion day
[["A",10,1],["B",10,2]]
Total worker-hours
20
Workdays needed
2
Calculation method

Calculation method

Patch workload and sequential completion day

Worker-hours=area/rate; divide by crew×daily access; process supplied patch order.

Total worker-hours

Sum per-patch area/rate.

Workdays needed

Ceil total worker-hours/(crew×daily access).

Symbols and units
a
Removal patches [ID,area m²,measured rate m² per worker-hour]
b
Crew workers
c
Usable access hours per day

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

  • Mapped patches, measured removal rates, access windows. Returns Labour and phased schedule. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Crew workers: minimum 1e-12, maximum 1000000000000.0. Usable access hours per day: minimum 1e-12, maximum 1000000000000.0.
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