Internal Corridors

  • Clear width of corridors should be over 1200mm
  • Running slope is 4% maximum and cross slope 2% maximum.
  • Outward opening doors in frequently used corridors should be recessed.
  • Any corridors that are below 1800mm width must provide passing places at least every 30m
  • Passing places must be 1800mm x 1800mm
  • Turning areas should be provided at junctions to enable people to change direction and return along route.


  • Size of passing place: 1800mm x 1800mm minimum
  • Interval between passing places: 30m minimum
  • Diameter of turning circle: 1800mm minimum

corridor width 1.2m minimum

turning circle 1.8m diameter