CEN/TC 112/WG 4 - Test methods

This document provides information on the characteristic values for use in designing structures incorporating wood-based panels. The characteristic values given are as defined in EN 1995-1-1.
This document includes the characteristic values of the mechanical properties and of the raw density for solid-wood panels complying with EN 13353:2022 technical classes SWP/1 S, SWP/2 S, SWP/3 S.

This Technical Report gives guidance on the use of wood-based panels in structural applications as structural floor and roof decking on joists or structural wall sheathing on studs in accordance with EN 12871. It provides information on:
—   inspection at site;
—   transport and delivery;
—   handling;
—   stacking;
—   storage;
—   moisture content, conditioning and the effects of moisture;
—   cutting and machining;
—   selection;
—   installation.

This European Standard specifies methods for internal initial type testing (ITT) and internal factory production control (FPC) as well as external control of wood-based panels for their compliance with EN 13986 and other relevant product specifications. However, it may also apply, at the option of the manufacturer, to wood-based panels applied for non-construction purposes.
This European Standard is not applicable for the assessment of compliance with specifications of panels comprised in consignments. In such cases, EN 326-3 applies.
For internal factory production control, if required, methods for the assessment of conformity of batches and of production over longer periods are given.
For external control, if required, methods for the initial inspection of a factory and initial type testing of a product, and for the surveillance of the factory production control, are given.
In the factory production control small test pieces are used. The statistics of evaluation is based on normal distribution.

This European Standard specifies:
-   concentrated load test and assessment methods for floor and roof decking;
-   soft body impact assessment methods and classification system for floors, roofs and walls.
This European Standard does not include racking testing or uniformly distributed loads as these are covered by testing according to EN 594 or calculation according to EN 1995-1-1 respectively.
This European Standard specifies the procedure for determining the performance characteristics through type testing, of load-bearing wood-based panels fitted on:
a)   structural joists for decking:
1)   in flooring applications in load categories A, B, C and D;
2)   in roof applications in load categories H and I;
for which type testing involves:
i)   punching shear under concentrated loading;
ii)   vertical soft body impact;
b)   studs for walling application for which type testing involves:
1)   pendular soft body impact.
Annex A (normative) lists modifications to EN 1195, particularly the contact area of the loading head that may be used for concentrated loading.
Annex B (informative) provides proposals for national performance requirements.
Annex C (informative) provides examples for a decking application in a floor and a roof.

This European Technical Specification defines terms, establishes a classification and specifies test methods for flat, factory made, non-structural, faced and unfaced sandwich boards for use in furniture manufacturing (SWB-F) for dry (service class 1) and humid conditions (service class 2). This European Technical Specification does not specify requirements.
Guidance is provided for the selection of board properties which are relevant for specific board applications.
This European Technical Specification is not applicable to products which are already covered by existing standards.

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.
NOTE   The 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.

The standard specifies methods for measuring the thickness, length and width of test pieces of wood-based panels.

This European Standard provides information on the characteristic values for use in designing structures incorporating wood-based panels. The characteristic values given in this standard are to be used in accordance with  EN 1995-1-1.
When utilizing the classification system for derivation of plywood characteristic values, this part of this standard can only be applied with reference to EN 636.
This part of this standard includes the characteristic values of the mechanical properties for plywood complying with EN 636 in bending, tension, compression, panel shear and planar shear. EN 636 classifies bending properties into two sets of classes, one for stiffness and another for strength. Stiffness and strength in tension and compression are related to the same properties in bending.
For shear properties, fixed values determined by correlation to density are provided.
Where optimised values are needed, the characteristic values are determined directly by testing in accordance with EN 789 and EN 1058 or by combination of testing according to the latter two standards and calculation according to prEN 14272.
This part of this standard applies to panels complying with the three following conditions:
-   5 layers or more and 6 mm overall thickness and more;
-    the ratio of the cumulative thickness of veneers in alternate directions does not exceed 2,5;
-    wood species with a mean density greater than 350 kg/m3 and not exceeding 750 kg/m3.

On the basis of test results from wood-based panel products for structural purposes, this European Standard specifies a method for the determination of:
- characteristic 5-percentile values of mechanical properties under the assumption of a log-normal distribution of the test data according to EN 14358; and
- characteristic mean values (50-percentile values) of physical properties under the assumption of a normal distribution of the test data.
Test data should be determined from tests using the test methods outlined in EN 789.

This Technical Specification specifies small-scale test methods for estimating the following mechanical properties of wood-based panels:
-   indicative planar shear strength (sometimes referred to as block shear);
-   indicative panel shear strength;
-   indicative strength and modulus of elasticity in tension in the plane of the panel;
-   indicative strength in compression in the plane of the panel.
Reference should be made to EN 310 for bending properties. For plywood, EN 314 1 may also be used as an indicator of planar shear strength.
These test methods are intended for indicative purposes only and should not be used as a means of determining structural design values. They may not be suitable for all panel types. They may be used as a means of supporting quality control procedures for structural panels, if correlations with EN 789 test results can be established (CEN Technical Report in preparation).

This European Standard specifies methods for the verification of compliance of one or more properties of an isolated lot of wood-based panels with the requirements of the relevant EN specification standards. Different sample sizes are given depending on wether or not the production is controlled according to EN 326-2.
For panels, the production of which is controlled in accordance to EN 326-2 this European Standard can be used in case of a dispute. It is not applicable for the factory production control. For these purposes, EN 326-2 applies.
In this standard, verification of compliance is based on the testing of small test pieces.

This European Standard provides the performance specifications and requirements for wood-based panels used in floating floors.

This European Standard specifies test methods for loading a floating floor with static concentrated point loads, alternating loads and dynamic impact loads for determining the values of the resulting deflections. NOTE: These test methods form part of the basis for classification of floating floor constructions. The requirements, i.e. load values, number of load cycles, and deformation limits for the different load categories, are given in prEN (WI 00 112 134).

This European Standard specifies a test method for determining the withdrawal capacity of nails, screws and staples inserted into wood-based panels.
This test method can be used for any combination of fastener type and wood-based panel product.
NOTE   This method differs from EN 320 which characterises fibreboards in terms of their resistance to the withdrawal load of only a single type of screw.

This European Standard specifies a method for the determination of strength, stiffness, creep and duration of load when wood-based panels are loaded in edgewise bending.
It is not applicable to extruded panels.

This European Standard specifies a method for the determination of dimensional changes in wood-based panels, due to changes in the relative humidity of the air.

This European Standard specifies a test method for the determination of the moisture resistance of wood-based
panels under cyclic test conditions.

This European Standard provides information on the characteristic values for use in designing structures incorportating wood-based panels. For dry process fibreboards (MDF), particleboards and certain fibreboards this standard includes the minimum characteristic values of both the mechanical properties and density. The characteristic values given in this standard are as defined in ENV 1995-1-1.

This European Standard specifies a method for determining the moisture content of test pieces of wood-based panels. Such result may be used to estimate the moisture content of wood-based panels according to EN 326-1.

This European Standard specifies a method of determining the density of test pieces of wood-based panels. Such result may be used to estimate the density of wood-based panels according to EN 326-1, clause 6.

This European Standard specifies a method of determining the apparent modulus of elasticity in flatwise bending and bending strength of wood-based panels of nominal thickness equal to or greater than 3 mm. Note: Structural design values shall be determined according to methods according to EN (124.102).

This European Standard specifies methods for measuring the thickness, width and length of wood-based panels. It applies to whole flat boards. The method for the determination of squareness and edge straightness is specified in part 2 of this European standard.

This European standard specifies methods for measuring the squareness and edge straightness of wood-based panels. It applies to whole flat boards. The method for the determination of thickness, width and length is specified in part 1 of this European standard.

This European Standard specifies certain rules for sampling and cutting of test pieces and the evaluation and presentation of test results, in order to obtain information on the properties of wood-based panels.

On the basis of test results from wood-based panel products for structural purposes, this European Standard specifies a method for the determination of:
- characteristic 5-percentile values of mechanical properties under the assumption of a log-normal distribution of the test data according to EN 14358; and
- characteristic mean values (50-percentile values) of physical properties under the assumption of a normal distribution of the test data.
Test data should be determined from tests using the test methods outlined in EN 789.

This European Standard specifies methods for internal initial type testing (ITT) and internal factory production control (FPC) as well as external control of wood-based panels for their compliance with EN 13986 and other relevant product specifications. However, it may also apply, at the option of the manufacturer, to wood-based panels applied for non-construction purposes.

This European Standard provides information on the characteristic values for use in designing structures incorporating wood-based panels. The characteristic values given are as defined in EN 1995-1-1.
This European Standard includes the characteristic values of the mechanical properties and of the raw density for solid-wood panels complying with EN 13353:2008 technical classes SWP/1 S, SWP/2 S, SWP/3 S.

This document gives guidance on the use of wood-based panels in structural applications as structural floor and roof decking on joists or structural wall sheathing on studs in accordance with EN 12871. It provides information on:
   inspection at site;
   transport and delivery;
   handling;
   stacking;
   storage;
   moisture content, conditioning and the effects of moisture;
   cutting and machining;
   selection;
   installation.

This European Standard specifies methods for internal initial type testing (ITT) and internal factory production control (FPC) as well as external control of wood-based panels for their compliance with EN 13986 and other relevant product specifications. However, it may also apply, at the option of the manufacturer, to wood-based panels applied for non-construction purposes.
This European Standard is not applicable for the assessment of compliance with specifications of panels comprised in consignments. In such cases, EN 326-3 applies.
For factory production control, if required, methods for the assessment of conformity of batches and of production over longer periods are given.
For external control, if required, methods for the initial inspection of a factory and initial type testing of a product, and for the surveillance of the factory production control, are given.
In the factory production control small test pieces are used. The statistics of evaluation is based on normal distribution.

This European Standard specifies the performance requirements and the procedure for demonstrating compliance, through type testing, of load-bearing wood-based panels fitted on:
a)   structural joists for decking:
-   in flooring applications in categories of use A, B, C and D;
-   in roof applications in categories of use H and I;
for which type testing involves:
-   punching shear under concentrated loading;
-   vertically dropped soft body impact;
b)   studs for walling application for which type testing involves:
-   racking behaviour;
-   pendular soft body impact.
This European Standard also provides a calculation method related to soft overlays that may be installed on roofs or floors with uniform loading.
NOTE   Soft body impact, addressing safety matters both during construction and in service, is defined in EN 1990 and EN 1991-1.
Annex A (normative) lists the contact areas of the loading heads that may be used for concentrated loading.
Annex B (informative) provides examples for a decking application in a floor and a roof.

This European Prestandard 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 B; this method can also be used for test pieces loaded under varying climates.

This European Standard specifies a method for measuring the thickness, length and width of test pieces of wood-based panels.

TC - Numerous modifications of equations throughout text

This European Standard specifies methods for both factory production control and external control of conformity of the properties of wood-based panels with the relevant EN specifications. However, it may also apply, at the option of the manufacturer, to wood-based panels applied for non-construction purposes. This European Standard is not applicable for the assessment of conformity with specifications of the properties of panels comprised in consignments. In such cases, EN 326-3 applies. For factory production control, if required, methods for the assessment of conformity of batches and of production over longer periods are given. For external control, if required, methods for the initial inspection of a factory and initial type testing of a product, and for the surveillance of the factory production control, are given. In this standard, control is based on the testing of small test pieces.

Migrated from Progress Sheet (TC Comment) (2000-07-10): Result of the merging of WIs 019-021, 038-040, 067 (TC Res 263/1998)(CC/981223) ++ Res. 278 : approved for FV (MB/990415)

This European Standard gives guidance on the use of wood-based panels in structural applications as structural floor and roof decking on joists or structural wall sheathing on studs in accordance with EN 12871. It provides information on: - inspection at site; - transport and delivery; - handling; - stacking; - storage; - moisture content, conditioning and the effects of moisture; - cutting and machining; - selection;
- installation.

This European Standard specifies methods for the verification of compliance of one or more properties of a consignment of panels with the requirements of a contract, or with the claimed values of properties of panels in a consignment as documented by the supplier. This European Standard is not applicable for the internal or external control of conformity of products in the factory. For these purposes, prEN 326-2 applies. In this standard, verification of compliance is based on the testing of small test pieces.