NCC 2022 Volume One - Building Code of Australia Class 2 to 9 buildings
Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

Filter

Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

C4

Part C4 Protection of openings

Part C4 Protection of openings

SA C4D18 Protection of openings – bulk grain storage facilities2019: SA C3.18

Insert SA clause C4D18 in clause C4D18 as follows:

Where external stairs, ramps or ladders are used as an exit in a bulk grain storage facility, any window or door opening within 6 m of the stairway or ladder—

  1. must be protected in accordance with C4D5; or
  2. the stairway, ramp or ladder must be enclosed for its full height above the lowest level of the window or door opening with non-combustible construction having an FRL of not less than 60/60/60.