Environmental Engineering Reference
In-Depth Information
Ta b l e 2 . 8
Vertical Multiplier
V
(in.)
VM
V
(cm)
VM
0
0.78
0
0.78
5
0.81
10
0.81
10
0.85
20
0.84
15
0.89
30
0.87
20
0.93
40
0.90
25
0.96
50
0.93
30
1.00
60
0.96
35
0.96
70
0.99
40
0.93
80
0.99
45
0.89
90
0.96
50
0.85
100
0.93
55
0.81
110
0.90
60
0.78
120
0.87
65
0.74
130
0.84
70
0.70
140
0.81
>
70
0.00
150
0.78
160
0.75
170
0.72
175
0.70
>
175
0.00
Ta b l e 2 . 9
Distance Multiplier
D
(in.)
DM
D
(cm)
DM
<
10
1.00
<
25
1.00
15
0.94
40
0.93
20
0.91
55
0.90
25
0.89
70
0.88
30
0.88
85
0.87
35
0.87
100
0.87
40
0.87
115
0.86
45
0.86
130
0.86
50
0.86
145
0.85
55
0.85
160
0.85
60
0.85
175
0.85
>
175
70
0.85
0.00
>
70
0.00
The 1981 lifting guide calculated an AL and a MPL value. Task demands
below the AL were considered to represent minimal risk, those between the AL
and MPL were moderate risk and required engineering or administrative controls,
and those above the MPL were high risk and required engineering controls. In
the revised lifting guide, task demands below the RWL were deemed to be of
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