Standards by Category

APA Guidelines Standards by Category

Table of contents

Design Code of Practice

EuroCode 5 (BS) EN 1995-1-1:2004+A2:2014

This is the core standard for designing timber structures, but each country has its own national annexes giving individual requirements. It also includes values for modification factors (kmod and kdef) which are specific to LVL

Harmonised/Designated Standards

(BS) EN 13986:2004 +A1:2015

As the overall standard for wood-based products for construction, it applies to all applications. See separate listings for specific characteristics

(BS) EN 14374:2004

This specifies the requirements for LVL in structural applications, including the tests to be used and methods for conformity evaluation

Product Standards

(BS) EN 14279:2004+A1:2009

Laminated Veneer Lumber (LVL) – Definitions, classification and specifications

(BS) EN 300:2006

The core product standard for OSB providing definitions, classification and specification

(BS) EN 636:2012+A1:2015

The core plywood standard – for general purpose load-bearing applications in all conditions, with a  classification for bending properties



(BS) EN 15804:2012+A2:2019

This is relevant to all structural applications – the most important environmental standard, providing core rules for creating an Environmental Product Declaration (EPD)

Engineering values

(BS) EN 14272:2011

(BS) EN 14272 : 2011
Plywood – Calculation method for some mechanical properties

PD CEN/TR 12872:2014

Guidance on the use of load-bearing panels in floors, walls and roofs

(BS) EN 1195:1998

Specifies two aspects for floor decking: how to determine the strength and stiffness under a point load and separately impact resistance. See also (BS) EN 12871

(BS) EN 12369-1:2001

Characteristic values for structural design using OSB


(BS) EN 789:2004

Specifies how to determine some mechanical properties

(BS) EN 596:1995

Explains how to specify and test for soft body impact on timber framed walls

(BS) EN 594: 2011

Standard for determining racking resistance of wall panels

(BS) EN 12871:2013

Performance characteristics for load-bearing in floors, walls and roofs – specifying a method for determining the performance characteristics through type testing

(BS) EN 12369-2:2011

Provides information on the characteristic values for the use of plywood in structural design

(BS) EN 1156:2013

This standard specifies how to determine duration of load and creep factors.  Use to determine mechanical durability or take the appropriate modification factors from (BS) EN 1995-1-1

(BS) EN 1058:2009

This covers specific engineering values for design ie determining the characteristic five percentile values for mechanical properties and 50 percentile values for physical properties from test data


(BS) EN 325:2012

Wood-based panels – determination of dimensions of test pieces

(BS) EN 324-2:1993

Wood-based panels – determination of squareness and edge straightness

(BS) EN 324-1:1993

Wood-based panels – determination of thickness, width and length

(BS) EN 315:2000

Plywood – Tolerances for dimensions

(BS) EN 318:2002

(BS) EN 318 : 2002
Wood-based panels – Determination of dimensional changes associated with changes in relative humidity

(BS) EN 317:1993

(BS) EN 317 specifies how to determine swelling by thickness


(BS) EN 322:1993

(BS) EN 322 : 1993
Wood-based panels – Determination of moisture content

(BS) EN 321:2002

Specifies how to determine the moisture resistance under cyclic test conditions for wood-based panels

(BS) EN 1087-1:1995

For a boil test, (BS) EN 1087-1 provides a test method for evaluating OSB bond quality


(BS) EN 323:1993

(BS) EN 323 : 1993
Wood-based panels – Determination of density

Sampling and Quality Control

(BS) EN 326-2:2010+A1:2014

Methods for internal initial type testing and factory production control

(BS) EN 326-3:2003

Wood-based panels – inspection of an isolated lot of panels

(BS) EN 326-1:1994

This covers rules for test piece sampling & cutting and how to record, express and present test results. For determining bond quality in plywood and internal bond for OSB

(BS) EN 310:1993

Specifies how to determine bending strength and stiffness

Bond Quality

(BS) EN 319:1993

This OSB standard specifies how to determine the internal bond

(BS) EN 314-2:1993

Specifies the requirements for bonding classes of veneer plywood according to their end uses.  Also useful for LVL

(BS) EN 314-1:2004

Test method for determining bond quality by shear testing


(BS) EN 350:2016

Testing and classification of the durability to biological agents of wood and wood-based materials

(BS) DDCEN/TS 1099 : 2007

Plywood: biological durability – guidance for the assessment of plywood for use in different use classes

(BS) EN 335:2013

Defines the Use Classes representing different service situations


(BS) EN ISO 354:2003

Specifies how to determine the sound absorption coefficient

Formaldehyde release

(BS) EN ISO 12460-5:2015

Guidance for all products to determine any formaldehyde release by the extraction (or perforator) method.  Refer also to (BS) EN 717-1 & -2 for plywood and LVL

(BS) EN 717-1:2004

(BS) EN 717-1 specifies how to determine formaldehyde emission by the chamber method

(BS) EN ISO 12460-3:2020

How to determine formaldehyde release by the gas analysis method (see part 3 in standard.  For plywood and LVL, also refer to (BS) EN 717-2:1994 

(BS) EN 717-2:1994

Specifies a method for determining formaldehyde emission by the gas analysis method


(BS) EN 16733:2016

Reaction to fire tests for building products – determining a product’s propensity for  continuous smoldering

(BS) EN 13501-1:2018

Fire classification of construction products and building elements – using test data from reaction to fire tests

Product Appearance

(BS) EN 635-5:1999

Part of a series relating the surface appearance of plywood. This sets down the methods for measuring & expressing characteristics & defects

(BS) EN 635-3:1995

Part of a series, this gives the classification by surface appearance for softwood plywood. Does not apply to overlaid panels


(BS) EN 635-1:1995

This part of the series on surface appearance sets down five appearance classes  – E, I, II, III and IV. This is based on the number and extent of certain natural characteristics of wood and manufacturing defects. Also see (BS) EN 635-3 and (BS) EN 635-5

Air Permeability

(BS) EN 12114:2000

(BS) EN 12114 determination of and how to express the air permeability coefficient

Thermal Conductivity

(BS) EN 12664:2001

This provides a testing method for determining the thermal performance of plywood, OSB and LVL


Water Vapour Permeability

(BS) EN ISO 12572:2001

Specifies how to determine water vapour resistance and water vapour transmission properties by the cup method


Embedment Strength

(BS) EN 383:2007

Optional standard to consider for determining the embedment strength of fasteners

Classification and Terminology

(BS) EN 313-2:2000

Plywood classification and terminology – terminology

(BS) EN 313-1:1996

Plywood classification and terminology – classification. See also product standard (BS) EN 636

Common Technical Symbols

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