A stair stringer is a structural member that supports the treads and risers of a staircase.
Stair tread size australia.
The rise is the vertical measurement taken from one step level to the next standard rise is 175mm.
The maximum deflection shall be l 100 or 40mm whichever is the lesser over the horizontal span l of the stairway between supports.
It covers areas such as the requirements for balustrades handrails anti slip surfaces height and depth ratios of stair treads and the necessity of landings.
The treads can be supplied to match the colour and species of our recycled timber floors or as a stand alone feature.
The ncc is updated and amended regularly.
Ncc 2015 was adopted by the states and territories on 1 may 2015.
The national construction code ncc formerly known as the building code of australia bca regulates stair construction and design in australia.
Treads shall have a minimum live loading of 2 5 kpa or a 2 2 kn per linear metre or minimum point loading of 1 5 kn applied on 100mm 100 mm pad on each step whichever loading produces the more adverse effect.
Standard tread sizes are usually up to 285mm wide with a thickness of 32 and 42mm.
Steps and stairs must now comply with the building code of australia which has been given the status of building regulation by australia s states and territories.
Our stair stringers range from 1 17 treads steps and are made for standard rise and going and work on a 1000mm between centres of the stringers.
One on each side and.