Seismic grade

Description

SG1

Basic ceiling in a building with low seismic performance requirements with ceiling component category P7 and SLS1 (up to building importance level 3).

Lightweight ceiling in areas that (other than ceilings less than 3 metres above floor level and items weighing less than 10 kg) are not public spaces and do not form part of an emergency egress way or support life safety systems, generally in small areas (under 100 m²).

Not requiring specific engineering design.

SG2

Ceiling in a building with low seismic performance requirements with ceiling component category P7 and SLS1 (up to building importance level 3).

Lightweight ceiling in areas that (other than ceilings less than 3 metres above floor level and items weighing less than 10 kg) are not public spaces and do not form part of an emergency egress way or support life safety systems, but may be in larger areas.

Within design parameters of relevant manufacturers’ standard type-tested designs but not requiring specific engineering design.

PS3 only.

SG3

Ceiling in a building up to building importance level 3 or component category P4 where ceilings must be installed to ULS, in public spaces, forming part of an emergency egress way, supporting life safety systems or at high level.

May be within design parameters of relevant manufacturers’ standard type-tested designs, but specific engineering design is required.

Minimum of PS1 and PS3.

SG4

Ceiling in a building up to building importance level 4 or component category P4 where ceilings must be installed to ULS, in public spaces, forming part of an emergency egress way, supporting life safety systems or at high level.

Specific engineering design is required.

Minimum of PS1, PS3 and PS4.

Producer statement

Provided by

Comment

PS1

Design

Seismic specialist or building services contractor

Certifies that the proposed works, if constructed as designed, will comply with the requirements of the Building Code.

PS2

Design review

Seismic specialist

Where a PS1 is provided by the contractor, the seismic specialist should provide a corresponding PS2 to certify that the proposed works, if correctly constructed, will comply with the requirements of the Building Code.

PS3

Construction

Building services contractor

Certifies that the works have been completed in accordance with the seismic specialist’s design documentation

PS4

Construction review

Seismic specialist

Certifies that construction monitoring and information provided by the contractor indicate that works have been completed in accordance with the seismic specialist’s design documentation.