Daily vibration exposure
A(8) for hand-arm or whole body
Enter each machine you use on a day, its vibration value from the user manual, and how long you run it. The calculator adds them up and normalises to an 8-hour day.
Result
A(8) · hand-arm
0.00 m/s²
A vibration value has not yet been entered. It is in the machine's manual — the calculator does not guess it for you.
Gloves don't help with this
There are vibration-damping gloves, but they only work on high frequencies and not on the low ones that cause white finger. What works is a machine that vibrates less, shorter periods at a time, and a firm grip without squeezing harder than necessary.
In depth: the calculation with your numbers
The calculation with your numbers
- Σ aᵢ² · tᵢ: 0
- A(8): √(0 / 480) = 0 m/s²
Which machine counts most?
The share is the machine's part of the day's total exposure. “Without the machine” is A(8) if that machine were gone, and “Alone to the action value” is how long it may run before it reaches the limit on its own.
| Machine and breaks | m/s² | min | Share of the dose | Without the machine | Alone to the action value |
|---|---|---|---|---|---|
| Mejselhammer | 0 | 60 | — | — | — |
Formula
A(8) = √( Σ aᵢ² · tᵢ / T₀ )
T₀ = 8 hours · aᵢ = m/s² from the datasheet · tᵢ = service life
Indicative
The result is indicative and an aid tool for estimates and learning. It does not replace design, applicable standards and legislation or a qualified professional's specific assessment. Always check against the source (The Vibration Regulation) and actual conditions on the task. See sources & reservations.