{
  "url": "https://openlegislation.uk/control-of-vibration-at-work-regulations-2005/schedule-1",
  "json_url": "https://openlegislation.uk/control-of-vibration-at-work-regulations-2005/schedule-1.json",
  "legislation": "uksi/2005/1093",
  "legislation_title": "The Control of Vibration at Work Regulations 2005",
  "legislation_url": "https://openlegislation.uk/control-of-vibration-at-work-regulations-2005",
  "path": "schedule/1",
  "kind": "schedule",
  "number": "1",
  "heading": "Hand-Arm Vibration",
  "text": "The daily exposure to vibration (A(8)) of a person is ascertained using the formula:\nA(8)=ahvTT0where:\nahv is the vibration magnitude, in metres per second squared (m/s2;);\nT is the duration of exposure to the vibration magnitude ahv; and\nT0 is the reference duration of 8 hours (28,800 seconds).\nTo avoid confusion between vibration magnitude and daily exposure to vibration, it is conventional to express daily exposure to vibration in m/s2 A(8).\nThe vibration magnitude, ahv, is ascertained using the formula:\nahv=ahwx2+ahwy2+ahwz2where:\nahwx, ahwy and ahwz are the root-mean-square acceleration magnitudes, in m/s2, measured in three orthogonal directions, x, y and z, at the vibrating surface in contact with the hand, and frequency-weighted using the weighting Wh.\nThe definition for the frequency weighting Wh is given in British Standard BS EN ISO 5349-1:2001.\nWhere both hands are exposed to vibration, the greater of the two magnitudes ahv is used to ascertain the daily exposure.\nIf the work is such that the total daily exposure consists of two or more operations with different vibration magnitudes, the daily exposure (A(8)) for the combination of operations is ascertained using the formula:\nA(8)=1T0∑i=1nahvi2Tiwhere:\nn is the number of individual operations within the working day;\nahvi is the vibration magnitude for operation i; and\nTi is the duration of operation i.",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 1 in force at 6.7.2005, see reg. 1"
    },
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 1 in force at 6.7.2005, see reg. 1"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2005/1093/schedule/1",
    "retrieved_at": "2026-10-29T04:59:56.174787+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}