Applications | JAS grade class | Thickness(mm) | Width (mm) | Length (mm) | Maximum span (mm) | Nail type / Nail spacing | |
---|---|---|---|---|---|---|---|
OSB dimensions and span ratings for Post and Beam construction | Roof sheathing | 3 | 12.0 | 910 | 1820 | 455 | N50(CN50) 150mm |
OSB dimensions and span ratings for platform-frame construction | Roof sheathing | 3 | 11.0 12.0 | 910 | 1820 | 455 | CN50 Perimeter spacing 150mm Intermediary spacing 300mm |