{
  "url": "https://openlegislation.uk/factories-act-1961-etc-metrication-regulations-1983/schedule-1",
  "json_url": "https://openlegislation.uk/factories-act-1961-etc-metrication-regulations-1983/schedule-1.json",
  "legislation": "uksi/1983/978",
  "legislation_title": "The Factories Act 1961 etc. (Metrication) Regulations 1983",
  "legislation_url": "https://openlegislation.uk/factories-act-1961-etc-metrication-regulations-1983",
  "path": "schedule/1",
  "kind": "schedule",
  "number": "1",
  "heading": "AMENDMENTS TO THE FACTORIES ACT 1961",
  "text": "(1)\n(2)\n(3)\n(4)\nProvision to be amended\nSubject-matter of measurement\nPresent measurement\nMeasurement to be substituted\nThe Factories Act 1961\nSection 2(2)\nMinimum amount of cubic space per person employed in a workroom\nFour hundred cubic feet\n11 cubic metres\nSection 2(5)\nMaximum height from floor to be taken into account when calculating cubic space\nFourteen feet\n4.2 metres\nSection 3(2)\nMinimum temperature of workroom after the first hour\nSixty degrees\n16 degrees Celsius\nSection 18(1)\nMinimum height of edge of fixed vessel, structure, sump or pit containing scalding, corrosive or poisonous liquid which need not be covered or fenced\nThree feet\n920 millimetres\nMinimum height of secure fencing to surround the vessel, structure, sump or pit etc.\nThree feet\n920 millimetres\nSection 18(2)(a)\nMinimum width of ladder, stair or gangway placed above, across or inside any vessel, structure, sump etc.\nEighteen inches\n460 millimetres\nSection 18(2)(b)\nMinimum height of fencing on either side of ladder, stair or gangway\nThree feet\n920 millimetres\nSection 18(3)\nPassage between adjoining vessels etc to be barred unless there is\n(a) minimum space between vessels or\nEighteen inches\n460 millimetres\n(b) minimum height of secure fencing\nThree feet\n920 millimetres\nSection 19(1)\nMinimum distance between traversing carriage of any self-acting spinning mule and any part of the head stock of another such machine\nTwelve inches\n310 millimetres\nSection 26(1)(f)\nMaximum thickness of chains or slings to be annealed every six months\nHalf-inch\n13 millimetres\nSection 27(7)\nMinimum distance between over-head travelling crane and person working on or near its wheel track\nTwenty feet\n6 metres\nSection 29(2)\nDistance which person will be liable to fall\nSix feet six inches\n2 metres\nSection 30(2)\nMinimum length of manhole (if rectangular or oval) in any chamber, tank, vat etc.\nEighteen inches\n460 millimetres\nMinimum width of manhole (if rectangular or oval)\nSixteen inches\n410 millimetres\nMinimum diameter of manhole (if circular)\nEighteen inches\n460 millimetres\nMinimum length of manhole (if rectangular or oval) in any tank wagon and other mobile plant\nSixteen inches\n410 millimetres\nMinimum width of manhole (if rectangular or oval)\nFourteen inches\n360 millimetres\nMinimum diameter of manhole (if circular)\nSixteen inches\n410 millimetres\nSection 39(7)\nStorage capacity of water-sealed gasholder\nFive thousand cubic feet\n140 cubic metres\nSection 68(4)\nWet bulb temperature reading above which artificial humidification is prohibited\nSeventy two and a half degrees\n22.5 degrees Celsius\nWet bulb temperature reading above which artificial humidification is prohibited when spinning cotton or spinning merino or cashmere by the French or dry process or spinning or combing wool by that process\nEighty degrees\n26.5 degrees Celsius\nSection 68(6)\nTemperature of water absorbing oxygen from permanganate of potash solution\nSixty degrees\n16 degrees Celsius\nRatio of water to oxygen absorbed\nHalf a grain per gallon of water\n7 milligrams per litre of water\nSection 68(8)\nMinimum difference in readings of the wet and dry bulb thermometers\nFour degrees\n2 degrees Celsius\nSection 175(2)(n)\nStorage capacity of gasholder\nFive thousand cubic feet\n140 cubic metres",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1983/978/schedule/1",
    "retrieved_at": "2026-10-29T18:00:18.421546+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."
}