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EN 384:2016+A1:2018/FprA2

(Amendment)

Structural timber - Determination of characteristic values of mechanical properties and density

Structural timber - Determination of characteristic values of mechanical properties and density

This European Standard gives a method for determining characteristic values of mechanical properties and density, for defined populations of visual grades and/or strength classes of machine graded structural timber. Additionally it covers the stages of sampling, testing, analysis and presentation of the data.
The standard provides methods to derive strength, stiffness and density properties for structural timber from tests with defect-free specimen.
The values determined in accordance with this standard for mechanical properties and density are suitable for assigning grades and species to the strength classes of EN 338.
NOTE 1   For assigning grades and species to the strength classes in EN 338 only three properties, i.e. bending or tension strength, modulus of elasticity parallel to grain in bending or tension and density need to be determined from test data, other properties can be calculated according to Table 2.
NOTE 2   EN 1912 gives examples of established visual grades assigned to strength classes.

Bauholz für tragende Zwecke - Bestimmung charakteristischer Werte für mechanische Eigenschaften und Rohdichte

Bois de structure - Détermination des valeurs caractéristiques des propriétés mécaniques et de la masse volumique

Konstrukcijski les - Ugotavljanje karakterističnih vrednosti mehanskih lastnosti in gostote

General Information

Status
Not Published
Publication Date
15-Aug-2022
Withdrawal Date
13-Nov-2022
ICS
79.040 - Wood, sawlogs and sawn timber
Technical Committee
CEN/TC 124 - Timber structures
Drafting Committee
CEN/TC 124/WG 2 - Solid timber
Current Stage
5060 - Closure of Vote - Formal Approval
Start Date
12-Feb-2022
Due Date
03-Jun-2021
Completion Date
12-Feb-2022
Ref Project
SIST EN 384:2016+A1:2019/kprA2:2022 - Structural timber - Determination of characteristic values of mechanical properties and density

Relations

Merged Into
EN 384:2016+A2:2022 - Structural timber - Determination of characteristic values of mechanical properties and density
Effective Date
19-Jan-2023
Amends
EN 384:2016+A1:2018 - Structural timber - Determination of characteristic values of mechanical properties and density
Effective Date
20-Mar-2019

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EN 384:2016+A1:2019/oprA2:2020EN 384:2016+A1:2019/oprA2:2020
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EN 384:2016+A1:2019/oprA2:2020
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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 384:2016+A1:2019/oprA2:2020
01-januar-2020
Konstrukcijski les - Ugotavljanje karakterističnih vrednosti mehanskih lastnosti in
gostote
Structural timber - Determination of characteristic values of mechanical properties and
density
Bauholz für tragende Zwecke - Bestimmung charakteristischer Werte für mechanische
Eigenschaften und Rohdichte
Bois de structure - Détermination des valeurs caractéristiques des propriétés
mécaniques et de la masse volumique
Ta slovenski standard je istoveten z: EN 384:2016+A1:2018/prA2
ICS:
79.040 Les, hlodovina in žagan les Wood, sawlogs and sawn
timber
91.080.20 Lesene konstrukcije Timber structures
SIST EN 384:2016+A1:2019/oprA2:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 384:2016+A1:2019/oprA2:2020

---------------------- Page: 2 ----------------------
SIST EN 384:2016+A1:2019/oprA2:2020


DRAFT
EUROPEAN STANDARD
EN 384:2016+A1:2018
NORME EUROPÉENNE

EUROPÄISCHE NORM
prA2
November 2019
ICS 79.040
English Version

Structural timber - Determination of characteristic values
of mechanical properties and density
Bois de structure - Détermination des valeurs Bauholz für tragende Zwecke - Bestimmung
caractéristiques des propriétés mécaniques et de la charakteristischer Werte für mechanische
masse volumique Eigenschaften und Rohdichte
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 124.

This draft amendment A2, if approved, will modify the European Standard EN 384:2016+A1:2018. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN 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, Turkey and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 384:2016+A1:2018/prA2:2019 E
worldwide for CEN national Members.

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SIST EN 384:2016+A1:2019/oprA2:2020
EN 384:2016+A1:2018/prA2:2019 (E)
Contents Page
European foreword . 3
1 Modifications to 5.1, "Sampling" . 4
2 Modification to 5.4.2, "Moisture content" . 4



2

---------------------- Page: 4 ----------------------
SIST EN 384:2016+A1:2019/oprA2:2020
EN 384:2016+A1:2018/prA2:2019 (E)
European foreword
This document (EN 384:2016+A1:2018/prA2:2019) has been prepared by Technical Committee
CEN/TC 124 “Timber structures”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
3

---------------------- Page: 5 ----------------------
SIST EN 384:2016+A1:2019/oprA2:2020
EN 384:2016+A1:2018/prA2:2019 (E)
1 Modifications to 5.1, "Sampling"
Replace the first sentence "The sampling shall be representative of the population."
with
"The sampling shall be representative of the population, including commercial practices.".
th
In the 5 paragraph, replace the sentence "A length of at least 30 times the depth or 3.6 m whichever is
the lesser meets this requirement."
with
"However, care should be taken to avoid biasing the sample through selection of unusually long lengths
compared to industrial practice.
NOTE
...

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