Civil Engineering Reference
In-Depth Information
TABLE 42.5 Table B and Coupling
Table B
Lower Arm 1
Lower Arm 2
Wrist
Upper Arm
1
2
3
1
2
3
1
1
2
2
1
2
3
2
1
2
3
2
3
4
3
3
4
5
4
5
5
4
4
5
5
5
6
7
5
6
7
8
7
8
8
6
7
8
8
8
9
9
Coupling
0
1
2
3
Good
Fair
Poor
Unacceptable
Well-fitting handle and a
mid-range power grip
Hand hold acceptable but not
ideal or coupling is
acceptable via another part
of the body
Hand hold not acceptable
although possible
Awkward, unsafe grip, no
handles Coupling is
unacceptable using other
parts of the body
42.5.1 Step 1 — Observing and Selecting the Postures to Assess
A RULA assessment is taken as a snapshot in the work cycle. The user is required to observe and make a
judgement as to the posture for assessment. This may be the most frequent, most sustained or worst
posture depending on the purpose of the assessment. It can be useful to estimate the proportion of
time spent in the various postures being evaluated (McAtamney and Corlett, 1993).
42.5.2 Step 2 — Scoring and Recording the Posture
Assess left, right, or both sides using the scoring sheet. Score the posture of each body part using the free
software
found at http:
www.ergonomics.co.uk
Rula
Ergo
index.html or
the paper version
//
/
/
/
TABLE 42.6 Table C and Activity Score
Table C
Score B
Score A
1
2
3
4
5
6
7
8
9
10
11
12
1
1
1
1
2
3
3
4
5
6
7
7
7
2
1
2
2
3
4
4
5
6
6
7
7
8
3
2
3
3
3
4
5
6
7
7
8
8
8
4
3
4
4
4
5
6
7
8
8
9
9
9
5
4
4
4
5
6
7
8
8
9
9
9
9
6
6
6
6
7
8
8
9
9
10
10
10
10
7
7
7
7
8
9
9
9
10
10
11
11
11
8
8
8
8
9
10
10
10
10
10
11
11
11
9
9
9
9
10
10
10
11
11
11
12
12
12
10
10
10
10
11
11
11
11
12
12
12
12
12
11
11
11
11
11
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
Activity Score
þ
1
1 or more body parts are static, e.g., held for longer 1 min
þ
1
Repeated small range actions. e.g., repeated more than four times per minute (not including walking)
þ
1
Action causes rapid large changes in posture or an unstable base
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