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The minimum width of stairways is 36. Handrails may project into the required width a distance of 3 Â½ from each side of a stairway. Stringers and other projects such as trim and similar decorative features may project into the required width 1 Â½ on each side.
The minimum clear width should be 600 mm for occasional one-way traffic, 800 mm for regular one-. way traffic and occasional two-way traffic and 1000 mm for regular two-way traffic. 5.2.3 Pitch (straight stairs) The minimum pitch for straight stairs should be 30Â°.