Building Code of Australia
The Building Code of Australia requires a static water supply – a secondary water supply storage in buildings over 25m in effective height with conditions to provide the water supply for the buildings sprinkler system. The building surveyor/ building certifier will nominate the static water supply system in the essential safety measures determination/ schedule.
Part E1 Fire Fighting Equipment, clause E1.5 Sprinklers, refers to Specification E1.5 Fire Sprinkler Installations, clause 7 sets out the criteria of the water supply requirements for a sprinkler system and when a static water supply can be used.
The following illustration depicts the static water supply relative to the grade of water supply.