For A6.1, a Class 1 building cannot be located above or below another dwelling or another Class of building, other than a private garage. applies to enclosed Class 9b buildings where: In case of an evacuation, and when the lights are dimmed or extinguished during a performance, requires the installation of aisle lights to avoid people tripping on steps, or falling on a ramp. The NCC provisions for Class 9c buildings are based on minimal on duty on-site staff being available at any time. However, this can give a simplistic impression of the types of building which can fall within this classification. For A6.0(1) where a part of a building has been designed, constructed or adapted for a different purpose and is less than 10% of the floor area of the storey it is situated on, the classification of the other part of the storey may apply to the whole storey. For example, if the intended use of a building is to grow or store a large amount of tomatoes, such as a large greenhouse, and there is likely to be only one to two persons in the building at any time, it is considered inappropriate to classify the building as a Class 10a under the Deemed-to-Satisfy Provisions and a classification of Class 7 or Class 8 would be more appropriate. market or sale room, showroom, or service station. Laboratories and sole-occupancy units in Class 2, 3 or 4 parts are excluded from this concession. In a Class 9b building used as an entertainment venue stairways or ramps; and; the floor of any access path, balcony, landing or the like. The audience must be protected from this fire source by either: A proscenium wall must comply with Specification H1.3. Typical outbuilding classifications include the following: Provisions relating to Class 10c structures are only intended to address private bushfire shelters associated with a single Class 1a dwelling. Class 4 classification applies to some types of accommodation located within a Class 5-9 building. PDF Recent Changes to the Sound Insulation Provisions of the Building Code The third is a building used for the display of goods or produce for sale by wholesale. the gradient of the floor surface must not be steeper than 1 in 8, or the floor must be stepped so that, a line joining the nosings of consecutive steps does not exceed an angle of 30 to the horizontal; and, the height of each step in the stepped floor is not more than 600 mm; and, the height of any opening in such a step is not more than 125 mm; and, if an aisle divides the stepped floor and the difference in level between any 2 consecutive steps, exceeds 230 mm but not 400 mm an intermediate step must be provided in the aisle; and, exceeds 400 mm 2 equally spaced intermediate steps must be provided in the aisle; and, the going of intermediate steps must be not less than 270 mm and such as to provide as nearly as practicable equal treads throughout the length of the aisle; and, the clearance between rows of fixed seats used for viewing performing arts, sport or recreational activities must be not less than, 300 mm if the distance to an aisle is not more than 3.5 m; or.