BS EN 408:2003 pdf free.Timber structures — Structural timber andglued laminated timber — Determination of somephysical and mechanical properties.
BS EN 408 This European Standard specifies test methods for determining the following properties of structural timber andglued laminated timber: modulus of elasticity in bending;shear modulus; bending strength; modulus of elasticity intension parallel to the grain; tension strength parallel to the grain; modulus of elasticity in compression parallel tothe grain; compression strength parallel to the grain; modulus of elasticity in tension perpendicular to the grain;tension strength perpendicular to the grain; modulus of elasticity in compression perpendicular to the grain;compression strength perpendicular to the grain and shear strength.
In addition, the determination of dimensions, moisture content, and density of test pieces are specified.
The methods apply to rectangular and circular shapes (of substantially constant cross section) of solid unjointedtimber or finger-jointed timber and glued laminated timber.
This European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter.Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).
The dimensions of the test piece shall be measured to an accuracy of 1%.All measurements shall be made whenthe test pieces are conditioned as specified in clause 8.lf the width or thickness varies within a test piece, thesedimensions should be recorded as the average of three separate measurements taken at different positions on thelength of each piece.The moisture content of the test piece shall be determined in accordance with EN 13183-1 on a section taken fromthe test piece.For structural timber the section shall be of full ross section, free from knots and resin pockets.Forperpendicular to grain test specimens the moisture content shall be determined from the whole specimen.
In strength tests for bending and tension parallel to grain and compression parallel to grain, the section shall be cutas close as possible to the fracture.BS EN 408 pdf download.