BS EN 300:2006 pdf free.Oriented Strand Boards(OSB)—Definitions,classification andspecifications.
BS EN 300 This European Standard applies to Oriented Strand Boards (OSB). It defines terms，establishes aclassification and specifies requirements.
The values listed in this European Standard relate to product properties but they are not characteristic valuesto be used in design calculations.
NOTE Test methods for determination of mechanical properties for structural purposes are given in EN 789.Determination of characteristic values of mechanical properties and density for structural purposes is given in EN 1058.Design characteristic values for OSB are given in EN 12369-1.
Information on supplementary properties is given in Annex c.
The following referenced documents are indispensable for the application of this document.For datedreferences，only the edition cited applies. For undated references，the latest edition of the referenceddocument (including any amendments) applies.
EN 120,Wood-based panels – Determination of formaldehyde content – Extraction method called theperforator method
EN 310, Wood-based panels – Determination of modulus of elasticity in bending and of bending strengthEN 317, Particleboards and fibreboards – Determination of swelling in thickness after immersion in water.
EN 318,Wood-based panels – Determination of dimensional changes associated with changes in relative hu-midity.
EN 319, Particleboards and fibreboards – Determination of tensile strength perpendicular to the plane of theboard.
The values which are given in Tables 2 to 7, determined by the relevant test methods as listed in Clauses 7 to10,are to be used for factory production control (FPC) purposes only and shall not be used in designcalculations.
With the exception of the moisture resistance requirements in Tables 5 and 7 and the swelling in thicknessrequirements given in Tables 2 to 4 and 6, the values given in Tables 2 to 7 are characterised by a moisturecontent in the material corresponding to a relative humidity of 65 % and a temperature of 20 °℃.
The values for the moisture resistance requirements in Tables 5 and 7 and swelling in thickness (Tables 2 to 4and 6) are characterised by a moisture content in the material before the treatment corresponding to arelative humidity of 65 % and a temperature of 20 °c.
The requirements in Tables 2 to 7 shall be met by 5 percentile values (95 percentile values in the case ofswelling in thickness) based on the mean values for individual boards and calculated in accordance withEN 326-1, or (for continuous internal FPC)EN 326-2.In the case of swelling in thickness they shall be equalto or less than the values in the Tables 2 to 4 and 6 and in the case of all other properties they shall be equalto or greater than the values in the tables.
This clause specifies the requirements in addition to those specified in Clause 5, for non load-bearing boards,general purpose boards and boards for interior fitments for use in dry conditions. Therefore, boards of thistype shall comply with the requirements given in Table 1 and Table 2.BS EN 300 pdf download.