Rated Sheathing: Roofing

Bending Strength & Stiffness for 11.1mm Panel 

General info: APA Rated OSB Sheathing always has a bond durability classification of Exposure 1 as not for exterior use. Panels have one surface with an overlay, texturing or grooving. Creating the tongue reduces the panel width by approximately 12.5 mm (1/2”), so net width may be 1,206mm (47.5 in)
Bending strength – stress applied parallel: Factor of safety (F S) bending strength –385 (lb-in²/ft of panel width) when stress applied parallel to strength axis. The strength axis is always parallel to the face and back orientation of the strands unless otherwise indicated
Bending strength – stress applied perpendicular: Factor of safety (F S) bending strength  – 115 (lb-in²/ft of panel width) when stress applied perpendicular to strength axis
Bending stiffness – stress applied parallel: E I (lb-in²/ft of panel width) – 78,000 when stress applied parallel to strength axis. E I provides a measure of the resistance of the beam to bending. The larger the E I, the smaller the deflection
Bending stiffness – stress applied perpendicular: E I -16,000 when stress applied perpendicular to strength axis
Span rating/support spacing: N/A
Thickness/US Performance Category*: 11.1mm (min 10.3mm; max 11.9mm); (7/16)*

 

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