Scoping [4.1.3(4)]
Specifications in 4.9 benefit people who have difficulty walking or using stairs. Compliance is required where stairs are the only connection between two levels, such as between floors in buildings without elevators. Stairs do not have to comply where vertical access (ramp, elevator, or lift) is provided. In this case, compliance is still a good idea since some people with walking impairments may prefer stairs to ramps or wheelchair lifts. Also, most building codes require stairs to comply with similar requirements. Where compliance is required, 4.9 applies to all stairs between levels not connected by an accessible means.
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