Board · Sizes pending
Timber-Based Composite — indicative fig. C·51
Fire Combustible CombustibleEmbodied carbon 0.47kgCO₂e/kg LowCompressive 8MPa StructuralDesign life 50yr
Engineered LVL-flange/OSB-web I-joists for floor and roof framing with long spans and predictable performance.
01 Physical
Density 600kg/m³
Specific gravity 0.6
Porosity 0.35%
Water absorption 18%
UV resistance 3
Chemical resistance 3
pH tolerance 5-9
02 Mechanical
Tensile strength 25MPa
Compressive strength 8MPa
Flexural strength 38MPa
Shear strength 6MPa
Poisson's ratio 0.35
Impact resistance 3
Creep resistance 4
03 Thermal
Thermal conductivity 0.13W/m·K
Specific heat 1600J/kg·K
Thermal expansion 5×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class Combustible
Fire resistance level 30
Ignition temp 250°C
Flame spread index 75
Smoke dev. index 150
Heat release rate 150
05 Sustainability & Health
Embodied carbon 280kgCO2e/m³
Carbon footprint 280
Embodied energy 4500MJ/kg
Water footprint 850L/kg
Recyclability 95%
Recycled content 0%
Renewable content 90%
Circular score 7
VOC emissions 0.1
Toxicity rating 1
LEED contribution 2
06 Durability · Cost · Logistics
Expected lifespan 50
Maintenance interval 0
Warranty period 15
Material cost (range) 80-150
Material cost (per unit) 115
Lead time 1-2 weeks standard sizes
Lifecycle cost 180
Annual maintenance 0
Market availability Readily available
07 Assessment
Advantages
- Consistent engineered properties
- High strength-to-weight ratio
- Minimal shrinkage and warping
- Long spans without intermediate supports
- Pre-punched service holes available
- Lighter than steel or concrete alternatives
- Sustainable plantation timber source
Constraints
- Requires weather protection during construction
- Limited fire resistance without protection
- Cannot be notched or cut in flanges
- Requires specific hangers and connectors
- Higher initial cost than solid timber
- Skilled installation required
08 Applications
A1 Residential floor joists
A2 Roof rafters and framing
A3 Commercial floor systems
A4 Cassette floor systems
A5 Rim boards and headers
A6 Wet area set-downs
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.