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The information below is intended to be used as a guide only and specifically tailored for Building Class 1 & 10. If you are constructing a staircase in Class 2-9 Building, other regulations suiting your class of building may be required. When designing your staircase you will need to follow the current Building Code of Australia. Staircases and Balustrades for use externally or between habitable rooms in residential buildings 1&10 can be found in section 3.9.1 Stair Construction and 3.9.2 Balustrades. Other references to staircase construction can be found in the Australian Standard AS1657 Section 4 – Stairways. Below is an overview of this information to help you design your staircase to suit these regulations. NCC Part 3.9.1 – Staircase Construction General Requirements – Staircase used in habitable rooms or used externally must comply with the Building Code of Australia Part 3.9.1. All areas not specified in Building Code of Australia should be referenced in the Australian Standard AS1657 Section 4. Staircases to storage areas or un-habitable rooms such as attics can be constructed outside the Building Code of Australia though must comply too the Australian Standards AS 1657. NCC Part 3.9.1.3 – Staircase Construction
AS 1657 – 4.1 WIDTH AND ANGLE OF SLOPE
3.9.1.4 Stair ConstructionSlip Resistance
AS 1657 – 4.3.1 Rises and goings
A continuous handrail must be provided along the side of any stairway or ramp. A balustrade is required to any staircase A balustrade is required to any staircase, balcony, ramp, hallway, veranda, mezzanine or bridge were the potential to fall from the above mentioned area is 1000mm or greater to the surface below. Part 3.9.2.3 – Balustrades or other barrier construction
Staircases to storage areas or un-habitable roomsAny staircase or balustrade to a storage area or un-habitable rooms must comply too all other regulations above apart from NCC Part 3.9.1.2. The Staircase rise and goings for an un-habitable room must be constructed in accordance with AS 1657 – 4.2.1. AS 1657 – 4.3.1 Rises and goings
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