So that people can move safely to and within a building, walking surfaces must have safe gradients, and every stairway or ramp must have suitable handrails where needed for support and stability, suitable landings to avoid undue fatigue, be suitable for safe passage given the nature, volume and frequency of use, and have slip-resistant surfaces on ramps and on stair treads or near the nosing edge. Deemed-to-Satisfy route: H5D2, stairway and ramp construction to Housing Provisions Part 11.2 (riser and going dimensions, landings, slip resistance classifications and ramp gradients), and H5D3, handrails to Part 11.3.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.