AUST – HENDRY building surveyors advise that the Building Code of Australia in Part C2 ‘Compartmentation and Separation’ contains clause C2.3 ‘Large isolated buildings’. A number of HENDRY building surveying design clients appear to need help in the explanation of this clause relative to fire compartmentation and connection of large isolated buildings.
Building Code of Australia: Clause 2.3 – Issue
How can a linking structure connect two buildings which are separate by a distance of 25m and what is the consequences of adding to an existing large building?
Building Code of Australia: Clause C2.3 – Explanation
The addition can occur, provided the requirements of C2.3 are met. Note that the fire compartment volume in this example exceeds 108,000 m3. The requirements will be:
- Sprinkler protection system
- Perimeter vehicle access road within 18m of the building
- Smoke vents / Heat vents or smoke exhaust where the height exceeds 12m
The elevated conveyor and walkway will not comply with the deemed to satisfy provisions of the BCA as the requirement of C2.4(b) are not met. Therefore an alternative solution is necessary for this issue (Fire Brigade concurrence must also be obtained). Fire separation of the new building and elevated bridge will need to occur by a compliant fire wall. The requirements applicable to the main factory will also apply to the enclosed conveyor and walkway.
BCA Illustrated contains 112 illustrations (each containing an issue, explanation, references and an illustration) in Part C2 – Compartmentation and Separation (fire compartmentation).
Building Legislation Table
Fire Safety Compliance: Essential Safety Measures
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