SIST EN 1058:2025

SLOVENSKI STANDARD
01-februar-2025
Lesne plošče - Ugotavljanje karakterističnih 5-percentilnih vrednosti in
karakterističnih srednjih vrednosti
Wood-based panels - Determination of characteristic 5-percentile values and
characteristic mean values
Holzwerkstoffe - Bestimmung der charakteristischen 5-%-Quantilwerte und der
charakteristischen Mittelwerte
Panneaux à base de bois - Détermination des valeurs caractéristiques correspondant au
fractile à 5 % d'exclusion et des valeurs caractéristiques moyennes
Ta slovenski standard je istoveten z: EN 1058:2024
ICS:
79.060.01 Lesne plošče na splošno Wood-based panels in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 1058
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 79.060.01 Supersedes EN 1058:2009
English Version
Wood-based panels - Determination of characteristic 5-
percentile values and characteristic mean values
Panneaux à base de bois - Détermination des valeurs Holzwerkstoffe - Bestimmung der charakteristischen
caractéristiques correspondant au fractile à 5 % 5-%-Quantilwerte und der charakteristischen
d'exclusion et des valeurs caractéristiques moyennes Mittelwerte
This European Standard was approved by CEN on 25 November 2024.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1058:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Symbols . 5
5 Reference population . 5
6 Determination of characteristic values of mechanical and physical properties . 5
6.1 Sampling . 5
6.2 Testing . 6
6.3 Analysis of data . 6
6.3.1 General. 6
6.3.2 Strength and stiffness properties. 6
6.3.3 Characteristic mean value (50-percentile characteristic value) . 6
7 Test report . 6
Annex A (informative) Calculation of the 5-percentile characteristic value of log-normal
distributed test data according to EN 14358 . 7
Annex B (informative) Calculation of the characteristic mean value (50-percentile value) of normal
distributed test data according to EN 14358 . 12
Bibliography . 13

European foreword
This document (EN 1058:2024) has been prepared by Technical Committee CEN/TC 112 “Wood-based
panels” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2025, and conflicting national standards shall be
withdrawn at the latest by June 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1058:2009.
This document includes the following significant technical changes with respect to EN 1058:2009:
— test methods like EN 1195 or any other relevant test referring to EN 1058 included in the scope;
— the calculation of mean values (50-percentile values) follows the statistical principles of
EN 14358:2016, 4.3: Calculation of characteristic stiffness properties (mean values);
— the characteristic mean values are taken as the sample mean value of EN 14358:2016, Formula (14);
— Annex B has been changed from normative to informative.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
On the basis of test results from wood-based panel products for structural purposes, this document
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 according to EN 14358.
Test data can be determined from tests using the test methods outlined in the test standard EN 789 or
other relevant test standard, performance standard or product standard normatively referring to
EN 1058.
NOTE See e.g. EN 1195 and EN 12871.
1 2
The statistical evaluation follows the principles of EN 1990:2023 , Annex D of EN 1995-1-1:2004 and of
EN 14358:2016.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 789, Timber structures - Test methods - Determination of mechanical properties of wood based panels
EN 1195, Timber structures - Test methods - Performance of structural floor decking
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
characteristic value
value of a material property which is defined as a fractile of the distribution of that property within the
total population of that material
Note 1 to entry: For all strength properties, this fractile is the fifth percentile. For stiffness properties as well as
physical properties, two different characteristic values can be used: the fifth percentile and the mean value.
3.2
panel
piece of wood-based sheet material large enough to permit the cutting of test pieces

As impacted by EN 1990:2002/A1:2005, EN 1990:2002/A1:2005/AC:2008 and EN 1990:2002/A1:2005/AC:2010.
As impacted by EN 1995-1-1:2004/A1:2008, EN 1995-1-1:2004/A2:2014 and EN 1995-1-1:2004/AC:2006.
...