EN 789:2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Sampling
   5.1 Sampling of panels
   5.2 Sampling of specimens
6 Preparation of test pieces
   6.1 Conditioning
   6.2 Dimensions of test pieces
        6.2.1 Methods of measurement
        6.2.2 Measurements to be taken
   6.3 Moisture content
        6.3.1 Method of measurement
        6.3.2 Measurements to be taken
   6.4 Density
        6.4.1 Method of measurement
        6.4.2 Measurements to be taken
7 Bending properties
   7.1 Test piece
   7.2 Loading equipment
   7.3 Loading method
   7.4 Test procedure
        7.4.1 Rate of application of load
        7.4.2 Measurement of length and deformation
   7.5 Expression of results
        7.5.1 Modulus of elasticity and bending stiffness
        7.5.2 Bending strength and moment capacity
8 Compression properties in the plane of the panel
   8.1 Test piece
   8.2 Loading equipment
   8.3 Loading method
   8.4 Test Procedure
        8.4.1 Rate of application of load
        8.4.2 Measurement of length and deformation
   8.5 Expression of results
        8.5.1 Compression of modulus of elasticity and stiffness
        8.5.2 Compression strength
9 Tension properties
   9.1 Test piece
   9.2 Loading equipment
   9.3 Loading method
   9.4 Test procedure
        9.4.1 Rate of application of load
        9.4.2 Measurement of length and deformation
   9.5 Expression of results
        9.5.1 Tension modulus of elasticity and stiffness
        9.5.2 Tension strength
10 Panel shear properties
   10.1 Test piece
   10.2 Loading equipment
   10.3 Measurement of deformation
   10.4 Loading method
   10.5 Test procedure
        10.5.1 Rate of application of load
        10.5.2 Measurement of deformation
        10.5.3 Failure mode
   10.6 Expression of results
        10.6.1 Panel shear modulus of rigidity
        10.6.2 Panel shear strength
11 Planar shear properties
   11.1 Test piece
   11.2 Loading equipment
   11.3 Loading method
   11.4 Test procedures
        11.4.1 Rate of application of load
        11.4.2 Measurement of deformation
   11.5 Expression of results
        11.5.1 Planar shear strength
        11.5.2 Planar shear modulus of rigidity
12 Test report
   12.1 General data
   12.2 Material data
   12.3 Data of individual test pieces
   12.4 Data of physical properties
   12.5 Additional data
   12.6 Sampling data
Annex A (normative) In-plane compression test pieces
Annex B (normative) Panel shear test pieces
Annex C (normative) Planar shear test pieces
Annex D (informative) Compression properties perpendicular to
        the plane of the panel (bearing)
Bibliography

This standard specifies test methods for determining some mechanical properties of commercial wood-based panel products for use in load-bearing timber structures. These properties are intended for the calculation of characteristic values for use in obtaining material design values. For each type and grade of panel product, as defined for example in an EN wood based panel standard, it is necessary to determine characteristic values of mechanical properties to enable it to be used for structural purposes.