Sound and Intercom Systems
The Building Code of Australia requires high rise buildings to have a sound and intercom systems (SSIS) for emergency purposes. The installation is required by the Building Code of Australia when the building height exceeds 25m in effective height and a number of other criteria for class 3, 9a and 9b buildings. Previous to the sound and intercom systems they were known as emergency warning and intercommunication systems (EWIS). Either sound and intercom systems or EWIS would be nominated by a building surveyor/ building certifier in an essential safety measures determination/ schedule.
Building Code of Australia
The Building Code of Australia requires a sound and intercom systems to comply with AS 1670.4-2004 Fire detection, warning, control and intercom systems – System design, installation and commissioning – Sound systems and intercom systems for emergency purposes. A sound and intercom systems installation comprises a master control panel usually interfaced to the buildings fire panel, warden intercom points at each exit, manual call points, a master warden control point and warning speakers distributed throughout the building to achieve a defined level of audibility above background noise.
The following illustration depicts buildings required to be installed with a sound and intercom systems.