This Standard sets out the method for the measurement of the airborne sound transmission loss of building partitions such as walls, floor/ceiling assemblies, doors, windows, and other space-dividing elements. It provides a means of evaluation of the sound-insulating performance of an isolated partition element in a laboratory. The sound transmission loss is defined in terms of a diffusely incident sound field; such a field is intrinsic to the test procedure.

Application
‍The requirements and procedure set out in this standard apply to the determination of the specific sound- attenuating property called sound transmission loss in suitably constructed laboratory spaces.
NOTES:
1. The essential features of such laboratories are a reverberant source room wherein sounds are generated, and a reverberant receiving room, between which two rooms the specimen for test is placed. The rooms must be of appropriate size and proportions and be built so that the sound transmission other than through the test specimen is negligible.
2. For an example of application of the results of the above method, see AS 1276.

Specifies a test for examining the ignition characteristics of the exposed surfaces of specimens, composites or assemblies of building products, not exceeding 70 mm in thickness, when placed horizontally and subjected to specified levels of thermal irradiance.

None