DIN EN 1316-2-2013 Hardwood round timber Qualitative classification Part 2 Poplar German version EN 1316-2 2012《硬木圆形木材 质量分级 第2部分 白杨木 德文版本EN 1316-2-2012》.pdf

1、January 2013 Translation by DIN-Sprachendienst.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、 79.040!$L“1934158www.din.deDDIN EN 1316-2Hardwood round timber Qualitative classification Part 2: Poplar;English version EN 1316-2:2012,English translation of DIN EN 1316-2:2013-01Laub-Rundholz Qualitts-Sortierung Teil 2: Pappel;Englische Fassung EN 1316-2:2012,Englische bersetzung von DIN EN 1316-

3、2:2013-01Bois ronds feuillus Classement qualitatif Partie 2: Peuplier;Version anglaise EN 1316-2:2012,Traduction anglaise de DIN EN 1316-2:2013-01SupersedesDIN EN 1316-2:1997-06www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 8 pages12.1

4、2 DIN EN 1316-2:2013-01 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft un

5、d Mbel (Timber and Furniture Standards Committee), Working Committee NA 042-01-14 AA Rund- und Schnittholz SpA zu CEN/TC 175 und ISO/TC 218. Amendments This standard differs from DIN EN 1316-2:1997-06 as follows: a) Clause 4 “Qualitative classification” has been completely revised and classes A to C

6、 have been defined; b) Table 1 “Grading rules for poplar” has been revised and new features have been added; c) the standard has been editorially revised. Previous editions DIN EN 1316-2: 1997-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1316-2 October 2012 ICS 79.040 Supersedes EN 1316-2

7、:1997English Version Hardwood round timber - Qualitative classification - This European Standard was approved by CEN on 18 August 2012. 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

8、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

9、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

10、 Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUR

11、OPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1316-2:2012: EPart 2: Popla

12、r Partie 2: Peuplier Bois ronds feuillus - Classement qualitatif - Teil 2: Pappel Laub-Rundholz - Qualitts-Sortierung -EN 1316-2:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Qualitative classification .44.1 Grading principles .44.2 Designation of gr

13、ades .44.3 Features to be taken into account for the classification .55 Table of rules for grading .6DIN EN 1316-2:2013-01 EN 1316-2:2012 (E) 3 Foreword This document (EN 1316-2:2012) has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber”, the secretariat of which is held by AFN

14、OR. 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 April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility that some o

15、f the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1316-2:1997. This standard is one of a series of standards concerning round timber (softwoods and hardwoods

16、). Other parts of this standard are: EN 1316-1, Hardwood round timber Qualitative classification Part 1: Oak and beech The main changes compared to the previous edition are: a) Clause 4 “qualitative classification” completely revised and classes A to C defined; b) Table 1 “grading rules for poplar”

17、revised and new features added; c) Editorial revision. 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, Finl

18、and, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 1316-2:2013-01 EN 1316-2:

19、2012 (E) 4 1 Scope This European Standard specifies a qualitative classification and grade designations for felled round timber of poplar in the form of long poles or logs. The classifications describe quality classes of round timbers for which the intended use is not known. This classification is a

20、pplicable to all merchantable clones of poplar. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition

21、 of the referenced document (including any amendments) applies. EN 844-1:1995, Round and sawn timber Terminology Part 1: General terms common to round timber and sawn timber EN 844-2:1997, Round and sawn timber Terminology Part 2: General terms relating to round timber EN 844-5:1997, Round and sawn

22、timber Terminology Part 5: Terms relating to dimensions of round timber EN 844-7:1997, Round and sawn timber Terminology Part 7: Terms relating to anatomical structure of timber EN 844-8:1997, Round and sawn timber Terminology Part 8: Terms relating to features of round timber EN 844-10:1998, Round

23、and sawn timber Terminology Part 10: Terms relating to stain and fungal attack EN 1309-2, Round and sawn timber Method of measurement of dimensions Part 2: Round timber Re-quirements for measurement and volume calculation rules EN 1310, Round and sawn timber Method of measurement of features EN 1311

24、, Round and sawn timber Method of measurement of biological degrade 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 844-1:1995, EN 844-2:1997, EN 844-5:1997, EN 844-7:1997, EN 844-8:1997 and EN 844-10:1998 apply. 4 Qualitative classification 4.1 Gradi

25、ng principles Each long pole, log or portion of a round timber individualized by a theoretical crosscut point, is qualified according to its dimensions and to the presence, size, and distribution (e.g. concentration) of specific features. 4.2 Designation of grades Standardized designation of classes

26、 includes 3 characters, the last one separated by a dash: DIN EN 1316-2:2013-01 EN 1316-2:2012 (E) 5 the first and second characters are the genus initial and first letter in Latin; the third character indicates the quality class. The classification of poplar is divided into three quality classes: P

27、o-A is an exceptional quality class; Po-B is a normal quality class; Po-C is a quality class, which includes long poles, logs or portions of long poles not permitted in the other quality classes. For class Po-C, more than 40 % of the volume of the wood shall be useable. 4.3 Features to be taken into

28、 account for the classification Table 1 gives the features taken into account in this classification and these shall be measured according to EN 1309-2, EN 1310 and EN 1311. A long pole, log or portion of round wood shall be downgraded by its failure to meet the requirements of any single feature. L

29、ength and diameter shall be measured using the method stated in EN 1309. A culling may be specified by contract for the following features: bark pocket, burl, buckle, felling shake, shear, dote, rot, canker, carbonized wood, scar, foreign bodies, mistletoe, bird peck, dry side. DIN EN 1316-2:2013-01

30、 EN 1316-2:2012 (E) 6 5 Table of rules for grading Table 1 Grading rules for Poplar Features Class Po-A Po-B Po-C (1) dimension minimum length2,5 mb2 mb2 mbminimum mid dia- meter under barka30 cmb25 cmb20 cmb(2) sound knots 1 ( 6 cm) per 2,5 mc1 ( 12 cm) per 1 m; or 1 branch whorl per 2 m (every sin

31、gle knot 8 cm) 12 cm permitted (3) unsound knots not permitted not permitted 1 ( 12 cm) per 1 m (4) simple sweep 2 cm/m 5 cm/m unlimited (5) ovality 10 % unlimited unlimited (6) heart shake no traversing cracks length of the crack on the surface shall be smaller than half of the mid diameter permitt

32、ed (7) ring shake not permitted permitted in the central 15 % of the radius on the butt end only permitted in the central 15 % of the radius on the butt end only (8) frost crack not permitted not permitted permitted (9) rot not permitted not permitted not permitted (10) insect attack not permitted not permitted permitted acontractors need to agree on a bark reduction bexcept clauses stipulated by contract cnot permitted for veneer logs DIN EN 1316-2:2013-01