SUBFLOOR SUPPORTS
BAL-LOW
No special construction requirements.
BAL-12.5
No special construction requirements.
BAL-19
No special construction requirements
BAL-29
Enclosure by external wall or by steel, bronze or aluminium mesh, non-combustible supports where the subfloor is uenclosed, naturally fire resistant timber stumps or posts on 75 mm metal stirrups
BAL-40
If enclosured by external wall refer below 'External Walls' section in table or non-combustible subfloor supports or tested for bushfire resistance to AS 1530.8.1
BAL-FZ(FLAMEZONE)
Subfloor supports - enclosure by external wall or non-combustible with FRL of 30/-/- or be tested for bushfire resistance to AS 1530.8.2
FLOORS
BAL-LOW
No special construction requirements.
BAL-12.5
No special construction requirements.
BAL-19
No special construction requirements
BAL-29
Concrete slab on ground, enclosure by external wall, metal mesh as above or flooring less than 00 mm above ground level to be non-combustible, naturally fire resistant timber or protected on the underside with sarking or mineral wool insulation
BAL-40
Concrete slab on ground, enclosure by external wall or protection of underside with a non-combustible material such as fibre cement sheet or be non-combustible or be tested for bushfire resistance to AS 1530.8.1
BAL-FZ(FLAMEZONE)
Concrete slab on ground or enclosure by external wall or an FRL of 30/30/30 or protection of underside with 30 minute incipient spread of fire system or be tested for bushfire resistance to AS 1530.8.2
EXTERNAL WALLS
BAL-LOW
No special construction requirements.
BAL-12.5
As for BAL-19
BAL-19
External Walls - Pats less than 00 mm above ground or decks etc to be of non-combustible material, 6 mm fibre cement clad or bushfire resistant/naturally fire resistant timber
BAL-29
Non-combustible material (masonry, brick veneer, mud brick, aerated concrete, concrete), timber framed, steel framed walls sarked on the outside and clad with 6 mm fibre cement sheeting or steel sheeting or bushfire resistant timber
BAL-40
Non-combustible material (masonry, brick veneer, mud brick, aerated concrete, concrete) or timber framed or steel framed walls sarked on the outside and clad with 9 mm fibre cement sheeting or steel sheeting or be tested for bushfire resistance to AS 1530.8.1
BAL-FZ(FLAMEZONE)
Non-combustible material (masonry, brick veneer, mud brick, aerated concrete, concrete) with minimum thickness of 90 mm or an FRL of -/30/30 when tested from outside or be tested for bushfire resistance to AS 1530.8.2
EXTERNAL WINDOWS
BAL-LOW
No special construction requirements.
BAL-12.5
As for BAL-19 except that mm Grade A safety glass can be used in place of 5mm toughened glass
BAL-19
Protected by bushfire shutter, completely screened with steel, bronze or aluminium mesh or 5 mm toughened glass or glass blocks within 400 mm of ground, deck etc. Openable portion metal screened with frame of metal or metal reinforced PVC-U or bushfire reisting timber.
BAL-29
Protected by bushfire shutter or completely screened with steel, bronze or aluminium mesh or 5 mm toughened glass with openable portion screened and frame of metal or metal reinforced PVC-U or bushfire resisting timber and portion within 400 mm of ground level screened.
BAL-40
Protected by bushfire shutter or 5 mm toughened glass. Openable portion screened with steel or bronze mesh
BAL-FZ(FLAMEZONE)
Protected by bushfire shutter or tight-fitting with weather strips at base and an FRL of -/30/-
EXTERNAL DOORS
BAL-LOW
No special construction requirements.
BAL-12.5
As for BAL-19 except that door framing can be naturally fire resistant (high density) timber
BAL-19
Protected by bushfire shutter, or screened with steel, bronze or aluminium mesh or glazed with 5 mm toughened, non-combustible or 35 mm solid timber for 400 mm above threshhold, metal or bushfire resisting timber framed for 400 mm above ground, decking, etc, tight-fitting with weather strips at base.
BAL-29
Protected by bushfire shutter, or screened with steel, bronze or aluminium mesh or glazed with 5 mm toughened, non-combustible or 35 mm solid timber for 400 mm above threshhold, metal or bushfire resisting timber framed tight-fitting with weather strips at base.
BAL-40
Protected by bushfire shutter, non-combustible or 35 mm solid timber, metal framed tight-fitting with weather strips at base
BAL-FZ(FLAMEZONE)
Protected by bushfire shutter or tight-fitting weather strips at base and an FRL of -/30/-
ROOFS
BAL-LOW
No special construction requirements.
BAL-12.5
As for BAL-19
BAL-19
Non-combustible covering. Roof/Wall junction sealed. openings fitted with non-combustible ember guards. roof to be fully sarked.
BAL-29
Non-combustible covering. Roof/Wall junction sealed. openings fitted with non-combustible ember guards. roof to be fully sarked.
BAL-40
Non-combustible covering. Roof/Wall junction sealed. openings fitted with non-combustible ember guards. roof to be fully sarked and no roof mounted evaporative coolers
BAL-FZ(FLAMEZONE)
Roof with FRL of 30/30/30 or tested for bushfire resistance to AS 1530.8.2. Roof/wall junction sealed. Openings fitted with non-combustible ember guards. No roof mounted evaporative coolers
VERANDAHS DECKS ETC
BAL-LOW
No special construction requirements.
BAL-12.5
As for BAL-19
BAL-19
Enjclosed sub-floor space - no special requirement for materials except within 400 mm of ground. No special requirements for supports or framing. Decking to be non-combustible or bushfire resistant within 300 mm horizontally and 400 mm vertically from a glazed element.
BAL-29
Enclosed sub-floor space or non-combustible or bushfire resistant timber supports. Decking to be non-combustible
BAL-40
Enclosed sub-floor space or non-combustible supports. Decking to be non-combustible
BAL-FZ(FLAMEZONE)
Enclosed sub-floor space or non-combustible supports. Decking to have no gaps and be non-combustible.