Table 1: Values of FM for use in the 1991 NIOSH equation for determining RWL
Work Duration
  £ 1 hr £ 2 hr £ 8 hr
Lifts/minute V < 75 * V ³ 75 V < 75 V ³ 75 V < 75 V ³ 75
0.2 1.00 1.00 0.95 0.95 0.85 0.85
0.5 0.97 0.97 0.92 0.92 0.81 0.81
1 0.94 0.94 0.88 0.88 0.81 0.81
2 0.91 0.91 0.84 0.84 0.65 0.65
3 0.88 0.88 0.79 0.79 0.55 0.55
4 0.84 0.84 0.72 0.72 0.45 0.45
5 0.8 0.8 0.6 0.6 0.35 0.35
6 0.75 0.75 0.5 0.5 0.27 0.27
7 0.7 0.7 0.42 0.42 0.22 0.22
8 0.6 0.6 0.35 0.35 0.18 0.18
9 0.52 0.52 0.3 0.3 0 0.15
10 0.45 0.45 0.26 0.26 0 0.13
11 0.41 0.41 0 0 0 0
12 0.37 0.37 0 0.21 0 0
13 0 0.34 0 0 0 0
14 0.31 0 0 0 0 0
15 0.28 0 0 0 0 0
> 14 0 0 0 0 0 0
* V = Vertical distance of the hands from the floor (in cm.)

Table 2: Values of CM for the use in the 1991 NIOSH equation for determining RWL
Coupling V < 75 V ³ 75
Good 1.00 1.00
Fair 0.95 0.95
Poor 0.90 0.90