Work out whole body vibration dose instantly with clear inputs, formula shown and shareable results.
Whole body vibration from vehicles and mobile plant is assessed on the same A(8) basis as hand-arm vibration but against much lower thresholds, typically an action value of 0.5 m/s² and a limit of 1.15 m/s². Seat suspension, tyre pressure and, above all, ground surface condition are the dominant controls.
Daily exposure
A(8) = magnitude x sqrt(daily hours / 8)
Preliminary estimate only. Whole body vibration assessment must follow the vibration regulations in force and be carried out by a competent person.
A(8) = magnitude x sqrt(daily hours / 8). Whole body vibration from vehicles and mobile plant is assessed on the same A(8) basis as hand-arm vibration but against much lower thresholds, typically an action value of 0.5 m/s² and a limit of 1.15 m/s².
Most whole body vibration comes from shocks as wheels cross potholes and kerbs. Grading haul roads often cuts exposure more than any change of vehicle.
This calculator takes 4 inputs: Whole body vibration magnitude, Daily exposure time, Exposure action value, Exposure limit value. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.