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  2. Stairs - Wikipedia

    en.wikipedia.org/wiki/Stairs

    Maximum space between the balusters of the handrail. This is typically 4 inches (102 mm). Openings (if they exist) between the bottom rail and treads are typically no bigger than 6 inches (152 mm). Headroom: At least 83 inches (211 cm). [14] Maximum vertical height between floors or landings. This allows people to rest and limits the height of ...

  3. Stair tread - Wikipedia

    en.wikipedia.org/wiki/Stair_tread

    A stair tread is the horizontal portion of a set of stairs on which a person walks. The tread can be composed of wood, metal, plastic, or other materials. In residential settings, treads can be covered in carpeting. Stair treads can come in non-slip varieties, particularly in commercial or industrial locations. [1]

  4. Handrail - Wikipedia

    en.wikipedia.org/wiki/Handrail

    The minimum width of the handrail above the recess shall be 1 + 1 ⁄ 4 inches (32 mm) to a maximum of 2 + 3 ⁄ 4 inches (70 mm). Edges shall have a minimum radius of 0.01 inches (0.25 mm). Handrails are located at a height between 34 and 38 inches (864 and 965 mm).

  5. Stair nosing - Wikipedia

    en.wikipedia.org/wiki/Stair_nosing

    Many states have introduced laws and mandates that require new staircase construction to include an abrasive surface or stair tread to minimize the risk of stairway related incidents. One notable instance of this type of building regulation is 'Title 24, Part 2, Section 2-3326(b)' of the California Energy Commission 's "Building Energy ...

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  7. Escalator - Wikipedia

    en.wikipedia.org/wiki/Escalator

    The visibility and accessibility of the escalator to traffic is relevant. Designers need to account for the projected traffic volumes. For example, a single-width escalator traveling at about 0.5 metres per second (1 + 1 ⁄ 2 ft/s) can move about 2000 people per hour, assuming that passengers ride single file. The carrying capacity of an ...

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