NCC 2022 Volume One - Building Code of Australia Class 2 to 9 buildings
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32

Specification 32 Construction of proscenium walls

Specification 32 Construction of proscenium walls

2019: Spec H1.3: 1
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This Specification provides the requirements for the construction of proscenium walls for theatres, public halls or the like.

2019: Spec H1.3: 2
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A stage and backstage area of a theatre or public hall has a high fire load. It is also a potential fire source due to stored props and scenery, etc.

Specification 32 deals with how to provide fire separation by a proscenium wall between the stage and backstage areas, and other parts of the building, including those occupied by an audience.

2019: Spec H1.3: 3
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The height and extent of a proscenium wall are similar to those of a fire wall.

2019: Spec H1.3: 4
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Combustible materials must not penetrate any proscenium wall.

2019: Spec H1.3: 5
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Any openings in a proscenium wall must be suitably protected to prevent the spread of a fire to the audience side.

An important part of avoiding the spread of fire from the stage is the protection of the opening to the stage. Protection must be provided while still permitting the audience to view a performance.

2019: Spec H1.3: 6
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Since the opening is too large to protect with an automatically-closing fire door, the aim of providing protection while maintaining functionality is achieved by the use of a proscenium curtain. S32C6 gives two alternative options for such a curtain.