Elevated floors with enclosed subfloor space
Jump to Elevated floors with unenclosed subfloor space
| Building Element | BAL-12.5 and BAL-19 | BAL-29 | BAL-40 | BAL-FZ2 |
|---|---|---|---|---|
| Wall enclosing subfloor space |
Less than 400mm above the ground or an external horizontal surface1 , use LASERframe/hySPAN (H3) framing clad with non-combustible material such as 6mm fibre-cement sheet Above 400mm, use SHADOWclad or ECOply |
LASERframe/hySPAN framing provided the framing is sarked on the outside and clad with non-combustible material such as 6mm fibre-cement sheet | LASERframe/hySPAN framing provided the framing is sarked on the outside and clad with non-combustible material such as 9mm fibre-cement sheet |
FRL of 30/30/30 required. Refer to information on fire rated walls |
| Subfloor supports (posts, stumps, columns etc) | ALLseasons (H4) | ALLseasons (H4) | ALLseasons (H4) | ALLseasons (H4) |
| Bearers and joists |
hySPAN hyJOIST LASERframe |
hySPAN hyJOIST LASERframe |
hySPAN hyJOIST LASERframe |
hySPAN hyJOIST LASERframe |
| Flooring |
STRUCTAflor STRUCTAflor Terminator R-Flor PLYflor |
STRUCTAflor STRUCTAflor Terminator R-Flor PLYflor |
STRUCTAflor STRUCTAflor Terminator R-Flor PLYflor |
STRUCTAflor STRUCTAflor Terminator R-Flor PLYflor |
1 An external horizontal surface or a ledge includes decks, carport roofs, awnings and similar elements or fittings having an angle less than 18 degrees to the horizontal and extending more than 110 mm in width from the wall or window or door
2 NSW requirements do not recognize BAL-FZ construction solutions from AS3959 2009. A BCA Alternative Solution is required for BAL-FZ construction in NSW.
Elevated floors with unenclosed subfloor space
Jump to Elevated floors with enclosed subfloor space
| Building Element | BAL-12.5 and BAL-19 | BAL-29 | BAL-40 | BAL-FZ2 |
|---|---|---|---|---|
| Wall enclosing subfloor space |
N/A Subfloor space is open |
N/A Subfloor space is open |
N/A Subfloor space is open |
N/A Subfloor space is open |
| Subfloor supports (posts, stumps, columns etc) |
ALLseasons (H4) NSW requires Bushfire resisting timbers |
Bushfire-resisting timbers | Brick, steel or concrete stumps | Brick, steel or concrete stumps |
| Bearers and joists |
hySPAN hyJOIST LASERframe NSW requires framing less than 400 mm above the ground use Bushfire resisting timbers or line the underside of the floor framing with fibre cement or sheet metal (roofing) |
400 mm and greater: hySPAN hyJOIST LASERframe1 Less than 400 mm: Bushfire resisting timber or lined the underside the floor frame with fibre cement or sheet metal (roofing) |
hySPAN hyJOIST LASERframe1 Provided the underside of the floor frame is lined with fibre-cement or sheet metal (roofing) |
hySPAN hyJOIST LASERframe provided floor system has FRL of 30/30/30 or 30 mins Resistance to Incipient Spread of Fire1 |
| Flooring |
STRUCTAflor STRUCTAflor Terminator R-Flor PLYfloor NSW requires flooring less than 400 mm from the ground lined with sarking or mineral wool unless already lined (R-Flor has sarking already attached to underside of flooring) |
STRUCTAflor STRUCTAflor Terminator PLYfloor (underside lined with sarking) R-Flor |
STRUCTAflor1 STRUCTAflor Terminator1 R-Flor1 PLYfloor1 |
STRUCTAflor STRUCTAflor Terminator R-Flor PLYfloor provided floor system has FRL of 30/30/30 or 30 mins Resistance to Incipient Spread of Fire1 |
1 Refer to lining manufactures for fire rated or Resistance to Incipient Spread of Fire floor/ceiling system information. In general terms, requires the addition of 16 mm fire grade plasterboard to the underside of the floor system.
2 NSW requirements do not recognize BAL-FZ construction solutions from AS3959 2009. A BCA Alternative Solution is required for BAL-FZ construction in NSW.
July 2010 (2)
