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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]
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 a fall. Mandate handrails if there is more than a certain number of steps (typically 2 ...
The regulation contains a detailed set of rules that must be followed when installing new steps in settings like municipal buildings, industrial plants, schools, etc. Perhaps the most recognizable standard in California's Title 24 building code is the need for a slip-resistant tread or nosing that is of contrasting color from the steps. This ...
Good lighting is important in a staircase so users see where they are going and to prevent falls. [6] There is often a window on the wall to let in daylight.In many cases, indoor stairs are placed far inside the building structure, and it is often not easy to get access to a wall on the outside where it would be natural to have a regular window for letting daylight in.
It can also refer to an upright post that supports and/or terminates the handrail of a stair banister (the "newel post"). [ 1 ] [ 2 ] [ 3 ] In stairs having straight flights it is the principal post at the foot of the staircase, but the term can also be used for the intermediate posts on landings and at the top of a staircase.
Common materials used in its construction are wood, stone, and less frequently metal and ceramic. A group of balusters supporting a handrail, coping, or ornamental detail is known as a balustrade. [1] [2] The term baluster shaft is used to describe forms such as a candlestick, upright furniture support, and the stem of a brass chandelier.
Codes also generally require that there be a 1 + 1 ⁄ 2 inches (38 mm) clearance between the underside of the handrail and any obstruction—including the horizontal bracket arm. There is an allowance however for variations in the handrail size—for every 1 ⁄ 2 inch (13 mm) of additional perimeter dimension over 4 inches (102 mm), 1 ⁄ 8 ...
The track system is built into the truss to guide the step chain, which continuously pulls the steps from the bottom platform and back to the top in an endless loop. One track guides the front wheels of the steps (called the step-wheel track) and another guides the back wheels of the steps (called the trailer-wheel track).