Civil Engineering Reference
In-Depth Information
TABLE 34.1
(
Continued
)
Back and Legs
A
B
C
D
E
F
Risk
Factor
Category
Risk
2 to 4
Hours
4+ to 8
Hours
8+
Hours
Add 0.5
per
hour
Score
Factors
Manual
Materials
Handling —
Frequency
1.
Lifting Frequency
Lifting frequency is between 1 and 5
times per minute
.
(Write actual lifting
frequency in the box to right.)
Lifting Frequency
1
1
_________________
2.
Lifting Frequency
Lifting frequency is 5 or more times per minute.
2
3
TOTAL BACK AND LEGS SCORE:
Environmental Worksheet
A
B
C
D
E
F
Risk
Factor
Category
Risk
Factors
2 to 4
Hours
4+ to 8
Hours
8+
Hours
Add 0.5
per
hour
Score
Environ-
ment
1.
Lighting (Poor Illumination / Glare)
Inability to see clearly (e.g. glare on a computer monitor).
0
1
2.
Cold Temperature
Air temperature less than 60ºF for sedentary work, 40ºF for
light work, 20ºF for moderate/heavy work; cold exhaust blowing
on hands.
0
1
TOTAL ENVIRONMENTAL SCORE:
Total Score:
(Upper Extremity + Back and Legs + Environmental)
workers. Therefore, the observer should sample enough workers to make a valid assessment. Oftentimes,
it is feasible to collect data for each person performing the task. Other times a judgment on the sample
size must be made based upon the amount of variability between workers and the number of workers
performing the task. Third, there is likely to be interrater (or observer) variability, and this variability
FIGURE 34.4 Window assembly before ergonomic intervention.
Search WWH ::
Custom Search