EN 1927-2-2008 en Qualitative classification of softwood round timber - Part 2 Pines (Incorporating corrigendum April 2009)《圆软木的定性分类 第2部分 松木 合并勘误表2009年4月》.pdf

1、BRITISH STANDARDBS EN 1927-2:2008Qualitative classification of softwood round timber Part 2: PinesICS 79.040g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g

2、47g36g58Incorporating April 2009corrigendum BS EN 1927-2:2008This British Standard waspublished under the authorityof the Standards Policy andStrategy Committee on 30 May 2008 BSI 2009National forewordThis British Standard is the UK implementation of EN 1927-2:2008,incorporating corrigendum April 20

3、09. It supersedes DD ENV 1927-2:1999The UK participation in its preparation was entrusted to Technical CommitteeB/543, Round and sawn timber.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary

4、 provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity fromlegal obligations. Amendments/corrigenda issued since publicationwhich is withdrawn.Date Comments May 2009 Implementation of CEN corrigendum April 2009Text modifi

5、ed in Table 1, row 3, column 3ISBN 978 0 580 67572 031EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1927-2March 2008ICS 79.040 Supersedes ENV 1927-2:1998 English VersionQualitative classification of softwood round timber - Part 2: PinesClassement qualitatif des bois ronds rsineux - Partie 2 :Pin

6、sQualitts-Sortierung von Nadel-Rundholz - Teil 2: KiefernThis European Standard was approved by CEN on 23 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without

7、any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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

8、by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Ge

9、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGMa

10、nagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1927-2:2008: EIncorporating corrigendum April 2009EN 1927-2:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references

11、 4 3 Terms and definitions .4 4 Qualitative classification for which the intended use is unknown.5 5 Rules for grading .6 6 Additional criteria 7 Annex A (informative) Qualitative classification for which the intended use is known.8 Annex B (informative) Adeviations9 BS EN 1927-2:2008EN 1927-2:2008

12、(E) 3 Foreword This document (EN 1927-2:2008) has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,

13、 at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identify

14、ing any or all such patent rights. This document will supersede ENV 1927-2:1998. EN 1927 consists of the following parts with the main title Qualitative classification of softwood round timber: EN 1927-1, Spruces and firs EN 1927-2, Pines EN 1927-3, Larches and Douglas fir According to the CEN/CENEL

15、EC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembo

16、urg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1927-2:2008EN 1927-2:2008 (E) 4 1 Scope This European Standard specifies the qualitative classification for the roundwood of pines. It applies to Scots pine (Pinus

17、 sylvestris), Corsican or Austrian pine (Pinus nigra), maritime pine (Pinus pinaster) and radiata pine (Pinus radiata). The classification is made either using Clauses 4 and 5 or using Annex A. Clauses 4 and 5 describe the qualitative classification of round timber for which the intended use is unkn

18、own. Informative Annex A gives a list of characteristics which serves as a guideline for contracts describing qualities for round timber of pines where the intended use is known. 2 Normative references The following referenced documents are indispensable for the application of this document. For dat

19、ed references, only the edition cited applies. For undated references, the latest edition 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

20、Terminology Part 2: General terms relating to round timber EN 844-5:1997, Round and sawn 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 tim

21、ber Terminology Part 8: Terms relating to features of round timber EN 844-9:1997, Round and sawn timber Terminology Part 9: Terms relating to features of sawn timber EN 844-10:1998, Round and sawn timber Terminology Part 10: Terms relating to stain and fungal attack EN 844-12:2000, Round and sawn ti

22、mber Terminology Part 12: Additional terms and general index EN 1309-2, Round and sawn timber Method of measurement of dimensions Part 2: Round timber Requirements for measurement and volume calculation rules EN 1310, Round and sawn timber Method of measurement of features EN 1311, Round and sawn ti

23、mber Method of measurement of biological degrade ISO 2036, Wood for manufacture of wood flooring Symbols for marking according to species 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

24、:1997, EN 844-9:1997, EN 844-10:1998 and EN 844-12:2000 apply. BS EN 1927-2:2008EN 1927-2:2008 (E) 5 4 Qualitative classification for which the intended use is unknown The qualitative grading has four classes: A, B, C and D. The grading is based on the following general description of quality classe

25、s: Quality class A First quality timber. Generally corresponding to a butt log with clear timber, without defects or with only minor defects and with few restrictions to its use. Quality class B Timber of average to first quality, with no specific requirements for clear wood. Knots are permitted to

26、such an extent as is considered to be average for each species. Quality class C Timber of average to low quality, allowing all quality characteristics which do not seriously reduce the natural characteristics of the wood. Quality class D Timber which can be sawn into usable wood, which, because of i

27、ts characteristics, falls into none of the quality classes A, B or C. The classes are defined more precisely in Table 1. All the listed qualitative characteristics in Table 1 shall be taken into account when a class is assigned, and measurements shall be made according to EN 1309-2, EN 1310 and EN 1

28、311. This classification shall be completed with the Latin name of specified species. The abbreviation of this Latin name can also be used instead of the full name. EXAMPLE 1 Scots pine: Pinus sylvestris class B or PINS-B1. EXAMPLE 2 Corsican or Austrian pine: Pinus nigra class B or PINN-B1. EXAMPLE

29、 3 Maritime pine: Pinus pinaster class B or PINP-B1. EXAMPLE 4 Radiata pine: Pinus radiata class B or PINR-B1. 1Symbols given in ISO 2036 BS EN 1927-2:2008EN 1927-2:2008 (E) 6 5 Rules for grading Table 1 Grading of pines Classes Characteristics A B C D knots intergrown, sound not permitted a 5 cm 8

30、cm permitted dead not permitted 4 cm 7 cm permitted unsound not permitted not permitted 4 cm permitted buckle not permittedpermittedbpermitted permitted resin pocket not permitted a1 per cross-section permitted permitted rate of growth Pinus radiata, Pinus pinaster 6 mm 8 mm unlimited unlimited Pinu

31、s sylvestris, Pinus nigra 4 mm 7 mm unlimited unlimited growth spiral grain 3 cm/m 7 cm/m 10 cm/m unlimited eccentric pith 10 % 20 % unlimited unlimited reaction wood cnot permitted 10 % 33 % unlimited sweep Pinus radiata, Pinus pinaster 2 cm/m 2 cm/m 4 cm/m 6 cm/m Pinus sylvestris, Pinus nigra 1 cm

32、/m 1,5 cm/m 3 cm/m 4,5 cm/m taper d 35 cm unlimited 1,5 cm/m 2,5 cm/m unlimited 35 cm unlimited 2 cm/m 4 cm/m unlimited shakes 35 cm not permitted not permitted 1/2 permitted heart shakes (except check) d 35 cm 1/4 1/3 1/2 permitted ring shakes d 35 cm not permitted not permitted not permitted 1/2 3

33、5 cm not permitted 1/4 1/3 1/2 insect attack 2 mm (e.g. Trypodendron lineatum) not permitted not permitted not permitted epermitted 2 mm (e.g. Sirex, Cerambycidae) not permitted not permitted not permitted small scale attack permitted BS EN 1927-2:2008slight bucklesareEN 1927-2:2008 (E) 7 Table 1 (c

34、ontinued) Classes Characteristics A B C D rot not permitted not permitted not permitted f permittedstain not permitted not permitted permitted in the sap area gpermitted a Specific contract regulations may be necessary. b Refer to the general description of quality classes. c Method of measurement:

35、width of reaction wood as a function of the cross section diameter (in addition to EN 1310). d Mid diameter under bark. e Initial stages of Trypodendron lineatum attack permitted. f Small areas of surface rot are permitted in the area of the butt swelling. g Specific contract regulations are recomme

36、nded. 6 Additional criteria In case of doubt, any externally visible or possible hidden flaws (e.g. knots under buckles, overgrown shakes, stripping damage) shall be laid bare and the revealed flaws assessed according to the quality specifications. Foreign bodies (e.g. shrapnel) are not dealt with i

37、n this standard. Where some characteristics of roundwood of the classes A and B do not fulfil the quality criteria on agreement, they can be compensated by higher quality in other characteristics. Generally, the following characteristics cannot be compensated: insect attack (especially Trypodendron

38、lineatum), rot and stain. If there is compensation for minor rot of little consequence, an agreement is necessary. Each log can be graded either in a single class or in more than one class by using theoretical crosscut points. The minimum length, accepted for a theoretical crosscut point, is 3 m for

39、 Scots pine, Corsican or Austrian pine and radiata pine, and 2 m for maritime pine. BS EN 1927-2:2008EN 1927-2:2008 (E) 8 Annex A (informative) Qualitative classification for which the intended use is known The following list of characteristics should be considered for contracts where the intended u

40、se is known. EN 1309-2, EN 1310 and EN 1311 shall be used as a reference. NOTE The following list is not exhaustive. Additional characteristics may be considered. butt swelling; eccentric pith; foreign body; insect attack; knots; rate of growth; reaction wood; resin pocket; rot; shakes; spiral grain

41、; stain; sweep; taper; tapping cut; undercut. BS EN 1927-2:2008EN 1927-2:2008 (E) 9 Annex B (informative) Adeviations A- deviation: National deviation due to regulations, the alteration of which is for the time being outside the competence of the CEN/ CENELEC national member. This European Standard

42、does not fall under any Directive of the EU. In the relevant CEN/ CENELEC countries these A- deviations are valid instead of the provisions of the European Standard until they have been removed. Lithuania Apvaliosios medienos apskaitos tvarkos apraas Order of description for registration of round ti

43、mber (in., (Official Gazette) 21-12-2007, No. 135-5502; valid since 01-01-2008). Apvaliosios medienos klasifikavimo ir enklinimo taisykls Rules for classification and marking of round timber (in., (Official Gazette) 13-07-2001, No. 61-2198; valid since 14-07-2001). BS EN 1927-2:2008BSI Group Headqua

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