EN 1156:2013

Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus
5 Sampling of panels and preparation of test pieces
6 Procedure
7 Expression of results
8 Test report
Annex A (informative) - Provisional test method for
        medium-size test pieces
Bibliography

This European Standard specifies a method of determining in a constant climate both a duration of load factor and a creep factor for wood-based panels stressed in flatwise bending with and without a shear component. Details of an alternative but provisional method employing medium sized test pieces are given in Annex A; this method can also be used for test pieces loaded under varying climates.NOTEThe duration of load factor is necessary to modify the characteristic strength values obtained in short-term structural tests in order to derive long-term values. The creep factor obtained in the test is used to predict a long-term deflection from the initial elastic deflection.