Steel Grating Load Capacity: Selection Guide for Industrial Use
Steel grating load capacity depends on bar size, span length, and load type. Selecting the correct grating ensures safe, cost-effective industrial flooring, platforms, and walkways.
Understanding Steel Grating
Steel grating consists of parallel load-bearing bars interlocked with perpendicular cross bars, providing high strength-to-weight ratio.
Grating Types
- Welded steel grating: Permanent fusion of bearing and cross bars; highest strength
- Swaged grating: Cross bars mechanically locked into slots
- Pressure-locked grating: Cross bars pressed into rectangular openings
- Riveted grating: Mechanical fasteners for heavy industrial loads
Key Load Capacity Factors
Bearing Bar Size
| Bar Height (mm) | Bar Thickness (mm) | Typical Capacity |
|---|---|---|
| 20 | 2-3 | Light duty |
| 25 | 3-5 | Medium duty |
| 30 | 4-6 | Heavy duty |
| 40 | 5-8 | Extra heavy duty |
Load Types
Uniformly Distributed Load
- Light duty: 2.5-5 kN/m2 (offices, walkways)
- Medium duty: 5-10 kN/m2 (storage, light vehicles)
- Heavy duty: 10-25 kN/m2 (forklifts, machinery)
Deflection Limits
| Application | Deflection Limit | Comment |
|---|---|---|
| Foot traffic | L/200 | Comfort and safety |
| Vehicular | L/300 | Structural integrity |
| Precision areas | L/400 | Equipment stability |
Standard Load Classes (EN 1433)
| Class | Load Capacity | Application |
|---|---|---|
| A15 | 15 kN | Pedestrian, cycle paths |
| B125 | 125 kN | Car parks, pedestrian areas |
| D400 | 400 kN | Roads, heavy vehicles |
| E600 | 600 kN | Industrial, docks |
| F900 | 900 kN | Airports, heavy equipment |
Surface Types
- Serrated: Anti-slip, recommended for wet/oily conditions
- Plain: Smooth surface, easier cleaning
Conclusion
Proper steel grating selection requires understanding load requirements, span lengths, and environmental conditions.
Need industrial steel grating? Xi’an Coremetal Steel supplies welded, swaged, and pressure-locked steel grating in carbon and stainless steel. Contact Tracy at tracy@coremetalsteel.com or +86 18291910632.