N.C.C. Requirements

  • Maximun Rise – 190mm
  • Minimum Going – 240mm
  • Minimum Head height – 2.0m
  • Level Baustrade – 1.0m
  • No gap/space larger than 125mm
  • Average Rise & Tread 180mm x 250mm
  • Maximum of three angled steps in a
    quarter space
  • Maximum of 18 Risers without landing