Step Tread Width Australia

Every staircase needs one handrail.

Step tread width australia.

Unfinished pine tread is applied to a radiate pine edge glued core. The width required tread type hand rails height. 10 to 11 inches minimum. Maximum 7 3 4 inch stair riser height.

In buildings step tread widths the going and heights the riser are dictated by the building code of australia bca. You ll find the tread width in the column on the left and the rise height in the column on the right. Stairs australian standard as1657 as1657 stairs details. Staircase tread run depth.

Minimum 10 inch stair tread depth with nosing or minimum 11 inches with no nosing. The national construction code ncc formerly known as the building code of australia bca regulates stair construction and design in australia. A step tread is the flat horizontal surface that you walk on. For interior use only our pine tread features a clean uniform look that is clear of most knots and imperfections commonly found in solid pine treads.

Step tread 2 riser 26 or 27. Minimum and maximum dimensions and ratios are given along with the maximum number of steps you can have in a flight. Unfinished pine stair tread made of two pine re saw layers the surewood lnl made of two pine re saw layers the surewood lnl 48 in. Minimum 6 8 headroom height clearance for stairway.

Stair width is measured from edge to edge of each side of the tread perpendicular to tread length. 540 2r g 700. Stair width does not include handrails. See as1657 for details.

Maximum 12 3 vertical height rise for a flight of stairs. Additionally the tread depth must be greater than or equal to 185mm. The tread depth is the distance from the front edge or nosing a tread projection that overhangs the riser below of one step to the front edge or nose of the next step measured horizontally. The combination of twice the riser plus the going 2r g shall be not less than 540 mm and not greater than 700 mm i e.

Maximum 4 1 2 inch handrail projection into stairway width on either side. 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. Or the width of the stair tread. Or use the handy chart below with the ratios already figured for you.

Australian standards for stairs and handrails outline that staircases need handrails on all exposed sides unless there s a fixed structure within 10cm of the stairway. While measurements of length are conventionally longer than those of width when considering rectangles in the case of steps the width is usually the longer side.