Fiberglass I Beam Span Table & FRP I Beam Strength Table
(Based on ASTM D3917 & ISO 1268 Standards)
| Angle Size (mm) | Thickness (mm) | Max Span (m) | Vertical Load (kg/m) | Horizontal Load (kg/m) | Deflection Limit (L/xxx) | Modulus of Elasticity (GPa) |
|---|---|---|---|---|---|---|
| 50×50×5 | 5 | 1.2 | 180 | 120 | L/180 | 18-22 |
| 75×75×6 | 6 | 1.8 | 250 | 170 | L/200 | 20-24 |
| 100×100×8 | 8 | 2.4 | 400 | 260 | L/240 | 22-26 |
| 150×150×10 | 10 | 3.0 | 600 | 400 | L/300 | 24-28 |
Notes:
- Load Conditions:
- Vertical Load = Uniformly distributed weight (e.g., walkways)
- Horizontal Load = Wind/Seismic forces
- Material Properties:
- Fiber Content: 65-70% E-glass
- Resin: Isophthalic polyester (Corrosion-resistant)
- Safety Factor: 3:1 (Design load = Max load ÷ 3)
Span Adjustment Factors:
- Outdoor Use: Reduce max span by 15% (UV exposure)
- Chemical Environments: Reduce load capacity by 20%
- Continuous Spans: Increase max span by 25% (multi-support)
Comparative Strength Data
| Property | FRP Angle | Steel Angle | Aluminum Angle |
|---|---|---|---|
| Tensile Strength (MPa) | 300-350 | 400-500 | 200-250 |
| Weight (kg/m) | 0.8-3.2 | 2.5-15.4 | 1.2-5.8 |
| Corrosion Resistance | ★★★★★ | ★★☆☆☆ | ★★★☆☆ |
Engineering Recommendations
- For Roof Purlins: Use 100×100×8 angles @ 1.5m spacing (max snow load 50kg/m²)
- Chemical Platforms: 150×150×10 angles with vinyl ester resin (+30% acid resistance)
- Electrical Insulation: Specify fire-retardant resin (UL94 V-0 rating)
Need custom calculations? Provide:
✅ Span requirements
✅ Load type (point/uniform)
✅ Environmental conditions
(Data based on Hengshui Hongwo FRP angles – typical values. Actual performance may vary by manufacturer.)