Calculating hand–arm vibration doses and limits
The chart published by the Health and Safety Executive (1994) can also be used
to calculate A(8) values. Figure 11.1 shows how this is done.
The previous standards for carrying out hand-arm vibration assessments, ISO
5349:1989 and BS 6842:1987 allowed the use of the highest of the three axis values
rather than a root-sum-of-squares (rss) combination of the three.