Recommended Cumulative Recovery Allowance (RCRA) Calculator

Task 1
Magnitude of the effort       
Duration of each effort s
Frequency

Task 2
Magnitude of the effort
Duration of each effort s
Frequency

Task 3
Magnitude of the effort
Duration of each effort s
Frequency

Task 4
Magnitude of the effort
Duration of each effort s
Frequency

Task 5
Magnitude of the effort
Duration of each effort s
Frequency

RCRA Ratio

RCRA Ratio acceptable?


MAE 1

RCRA 1

Task 1 acceptable?


MAE 2

RCRA 2

Task 2 acceptable?


MAE 3

RCRA 3

Task 3 acceptable?


MAE 4

RCRA 4

Task 4 acceptable?


MAE 5

RCRA 5

Task 5 acceptable?

RCRA Equation:


E = magnitude of the effort

tE = duration of each effort

f = frequency
(number of efforts per day)

(tE)(f) = total duration of efforts per day

tR/D = total duration of the recommended recovery allowance required per task per day

DC = duty cycle
(total duration of efforts per day / 25200 s)

DCMIN = minimum duty cycle
(1 s / 25200 s)

Source:
An Equation to calculate the Recommended Cumulative Rest Allowance Across Multiple Subtasks, published by Gibson, Potvin, 2016.

Predicting Maximum Acceptable Efforts for Repetitive Tasks: An Equation Based on Duty Cycle, published by Potvin, 2012.