Atlas index
Panel · 150–250 mm
Cementitious — indicative fig. M·34

High-performance precast concrete balcony panels with Class 2 architectural finish, offering fire resistance up to 180 minutes, acoustic rating of Rw 54, and 50-100 year design life. Available in 150-250mm thicknesses for structural balcony applications.

01 Physical

Density 2400kg/m³
Specific gravity 2.4
Porosity 12%
Water absorption 5%
Hardness 7
UV resistance Excellent
Chemical resistance Good
pH tolerance 12.5-13.5
Surface roughness 1.5µm

02 Mechanical

Tensile strength 3MPa
Compressive strength 40MPa
Flexural strength 3.5MPa
Shear strength 4MPa
Poisson's ratio 0.2
Impact resistance High
Creep resistance Good

03 Thermal

Thermal conductivity 1.7W/m·K
Specific heat 880J/kg·K
Thermal expansion 12×10⁻⁶/°C

04 Compliance & Fire First question

Combustibility class Non-combustible
Fire resistance level 180/180/180
Ignition temp N/A°C
Flame spread index 0
Smoke dev. index 0
Heat release rate 0

05 Sustainability & Health

Embodied carbon 64kgCO2e/m²
Carbon footprint 320
Embodied energy 1100MJ/kg
Water footprint 180L/kg
Recyclability 90%
Recycled content 25%
Renewable content 0%
Circular score 7
VOC emissions 0
Toxicity rating Non-toxic
LEED contribution 3

06 Durability · Cost · Logistics

Expected lifespan 50-100 years
Maintenance interval 5 years
Warranty period 10 years
Material cost (range) 250-350
Material cost (per unit) 300
Lead time 6-10 weeks
Lifecycle cost 450
Annual maintenance 2
Market availability Good

07 Assessment

Advantages

  • Factory-controlled quality with Class 2 architectural finish
  • Superior fire resistance (FRL up to 180/180/180)
  • Excellent acoustic performance (Rw 54 dB)
  • 50-100 year design life with minimal maintenance
  • Non-combustible with BAL-FZ bushfire rating
  • High thermal mass for energy efficiency
  • Rapid installation reducing construction time

Constraints

  • High initial cost ($250-600/m² installed)
  • Requires crane access for installation
  • Transport limitations (max 15m length)
  • Limited to special architectural features per AS 3610
  • Heavyweight requiring structural support
  • Specialized design and engineering required
  • Lead time of 6-10 weeks for standard panels

08 Applications

A1 Multi-storey residential balconies
A2 Commercial building balconies and terraces
A3 Architectural facade elements
A4 Fire-rated external floor systems
A5 Cantilevered balcony structures
A6 High-rise apartment balconies
A7 Hotel and hospitality outdoor spaces

09 Sources & Standards

Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.

MATERIALS ATLAS · CL·AD M·34 · data indicative — verify per project