scope:

This International Standard gives definitions, classifications and specifications for the manufacturing requirements of oriented strand board (OSB). The values given are used to classify OSB into one of four types, namely OSB type GP-REG, LB-REG, LB-MR or HLB-MR. The values are related to panel properties, but are not characteristic values to be used for design purposes.

NOTE 1 When OSB characteristic strength and stiffness values are required for design purposes, the properties can be established based on testing in accordance with ISO 16572, ASTM D7033-07 or EN 789.

NOTE 2 For specific load-bearing applications, such as walls, roofs, floors, I joist webs, the load-bearing OSB can meet the specific performance requirements for that intended application, in addition to the requirements of this International Standard.

NOTE 3 Information on supplementary properties is given in Annex C.

NOTE 4 This International Standard is the reference for OSB classifications and specifications. Other regional or national standards covering the performance of wood structural panels are given in the bibliography.