Gore Ave, Kirrawee

Rear Balcony Extension in a Flame Zone (FZ)– Structural Steel Construction

SORTED Projects, was invited back by one of our loyal customers to complete a challenging rear deck. Having previously completed a two car carpark and driveway with carport, where
previously there was no off street parking. Height and access were a huge factor in the construction.

This balcony extension is designed to comply with BAL-FZ (Bushfire Attack Level–Flame Zone) requirements under AS 3959, the Australian Standard for construction in bushfire-prone areas.

As the home backs onto the Royal National Park. The use of structural steel provides both strength and fire resistance, making it suitable for the highest bushfire risk category.

This balcony is a high-level column-supported structure, extending from the rear of a residence situated in a
Bushfire Attack Level–Flame Zone (BAL-FZ) area. Elevated 17 metres above the lowest ground level, it offers panoramic views of the Royal National Park, while meeting stringent bushfire safety standards.

Key Features:

• Structural Frame:
  • Made from galvanized or powder-coated steel to resist corrosion and meet fire performance standards.
  • All connections (bolts, welds, brackets) are designed to maintain integrity under extreme heat.
  • Engineered structural steel frame, designed to support significant vertical and lateral loads due to its height.
  • Steel columns were anchored into concrete footings and rock .
• Decking Surface:
  • The deck was constructed from non-combustible materials, including compressed fibre cement sheeting and sandstone tiles.
  • Timber is not permitted to be used in a flame zone.
• Balustrades & Railings:
  • Made from stainless steel spigots with toughened glass to comply with the FL BAL
• Pergola and privacy screen
  • Constructed from powder coated aluminium with sealed joints to prevent ember entry.
  • Eaves and soffits are enclosed with non-combustible materials.

The result is a tree top balcony with breath taking views of our national park