Glazing · 6–7 mm
Glass — indicative fig. M·59
Fire A1 Non-combustibleEmbodied carbon 10kgCO₂e/kg HighCompressive 1000MPa StructuralDesign life 50yr
Self-supporting U-shaped cast glass system providing structural glazing with excellent daylighting, spans up to 7m vertical, thermal performance U-value 0.49-2.5 W/m²K depending on configuration
01 Physical
Density 2500kg/m³
Specific gravity 2.5
Porosity 0%
Water absorption 0%
Hardness 6.5
UV resistance Excellent - blocks 99% UV when treated
Chemical resistance Excellent - resistant to most chemicals except HF
pH tolerance 3-11
Surface roughness 0.5µm
02 Mechanical
Tensile strength 40MPa
Compressive strength 1000MPa
Flexural strength 45MPa
Shear strength 20MPa
Poisson's ratio 0.22
Impact resistance Grade B AS 2208 when tempered
Creep resistance Excellent - no creep at service temperatures
03 Thermal
Thermal conductivity 1W/m·K
Specific heat 840J/kg·K
Thermal expansion 9×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class Non-combustible
Fire resistance level Non-combustible per AS 1530.1
Flame spread index 0
Smoke dev. index 0
Heat release rate 0
05 Sustainability & Health
Embodied carbon 10.3
Carbon footprint 85
Embodied energy 155MJ/kg
Water footprint 280L/kg
Recyclability 100%
Recycled content 20%
Renewable content 0%
Circular score 85
VOC emissions 0
Toxicity rating Non-toxic
LEED contribution 2
06 Durability · Cost · Logistics
Expected lifespan 50+ years
Maintenance interval Annual inspection, 5-year reseal
Warranty period 10 years typical
Material cost (range) $180-350/m²
Material cost (per unit) $250/m²
Lead time 8-16 weeks
Lifecycle cost $15-20/m²/year over 30 years
Annual maintenance $5-10/m²
Market availability Limited - special order
07 Assessment
Advantages
- Self-supporting structure reduces framing requirements
- Excellent daylight diffusion without glare
- Long spans possible (up to 7m vertical)
- Good thermal performance in double-glazed configuration
- No vertical mullions required for continuous facades
- Can achieve curved installations
- Provides privacy while transmitting light
- Non-combustible material suitable for fire-rated assemblies
- 100% recyclable at end of life
- Low maintenance requirements
Constraints
- Limited local availability in Australia - mostly imported
- Long lead times (8-16 weeks typical)
- Higher cost than conventional glazing systems
- Requires specialised installation expertise
- Limited to non-structural wind loads
- Cannot achieve full transparency
- Thermal movement requires careful detailing
- Not suitable for BAL-40 or BAL-FZ without additional protection
- Size limitations for tempering (max 6m typical)
- Potential for thermal stress in exposed conditions
08 Applications
A1 Industrial building facades and clerestory glazing
A2 Sports facility and gymnasium walls
A3 Museum and gallery daylighting systems
A4 Commercial building atriums and corridors
A5 Parking structure screening
A6 Privacy screens and partitions
A7 Retail storefront systems
A8 Educational facility corridors
A9 Data centre envelope systems
A10 Agricultural greenhouse applications
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.