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Key regulations relating to stair configuration

Stairs should not have more than 18 risers in a flight of steps to ensure that people negotiate a limited number of steps before a landing is installed so they can rest.
Stair Landing Stairs should not have more than 18 risers in a flight of steps to ensure that people negotiate a limited number of steps before a landing is installed so they can rest. This also reduces the potential distance of any fall on the flight. It is surprising how often we see plans requesting a 19 rise straight flight! The regulations on stair design emphasise consistency of a person's travel path up a staircase. Inconsistent steps can easily lead to trips and falls. Thus, stairs should not have more than 3 winders in a ¼ landing where the going of the winders to either ¼ or ½ landings may differ from the remainder of the flight however they must be consistent within the landing and not varied individually. Riser openings greater than 125mm are not allowed so as to prevent any possibilily of a minor falling through the openings. Going less than 240mm for a straight flight of steps are not allowed, see http://www.arden.net.au/resources/Articles/Stair-Safety-Overview---BCA-Standards-for-staircase-rise-and.aspx for details. Floor surfaces technically must be non-slip, and/or include a non-slip nosing strip, again to reduce the possibility of falls. It must be noted that domestic stair installations are somewhat variable in their adherence to this requirement.

Published on: 28-Sep-2010. Topic/s: Stair safety, compliance, and regulations