Exposure of the Hand to Vibration in either Up and Down, Sideways or Forward and Back Directions | |||
Total daily exposure duration* | Values of the dominant**, frequency-weighted, root mean square, component acceleration which shall not be exceeded | ||
m/s2 | g*** | ||
4Â hours and less than 8Â hours | 4 | 0.40 | |
2Â hours and less than 4Â hours | 6 | 0.61 | |
1Â hour and less than 2Â hours | 8 | 0.81 | |
less than one hour | 12 | 1.22 | |
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* The total time vibration enters the hand per day, whether continuously or intermittently | |||
** Usually one axis of vibration is dominant over the two remaining axes. If one or more vibration axis exceeds the total daily exposure, then the exposure limit has been exceeded. | |||
*** 1 g = 9.81 m/s2 |