BS EN 1315-2010 Dimensional classification of round timber《圆木的尺寸分类》.pdf

1、BS EN 1315:2010ICS 79.040NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDDimensionalclassification of roundtimberThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2010 BSI 2010ISBN 978 0 580 617

2、86 7Amendments/corrigenda issued since publicationDate CommentsBS EN 1315:2010National forewordThis British Standard is the UK implementation of EN 1315:2010. It supersedes BS EN 1315-1:1997 and BS EN 1315-2:1997 which are withdrawn.The UK participation in its preparation was entrusted to Technical

3、Committee B/543, Round and sawn timber.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a Britis

4、h Standard cannot confer immunity from legal obligations.BS EN 1315:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1315 January 2010 ICS 79.040 Supersedes EN 1315-1:1997, EN 1315-2:1997English Version Dimensional classification of round timber Classement dimensionnel des bois ronds Dimensi

5、ons-Sortierung von Rundholz This European Standard was approved by CEN on 18 December 2009. 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

6、lists and bibliographical references concerning such national standards 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 by translation under the

7、responsibility of a CEN member into its own language and notified to the CEN 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, Greec

8、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Managemen

9、t Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1315:2010: EBS EN 1315:2010EN 1315:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Dim

10、ensional classification 4BS EN 1315:2010EN 1315:2010 (E) 3 Foreword This document (EN 1315:2010) 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

11、publication of an identical text or by endorsement, at the latest by July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. 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 s

12、hall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1315-1:1997 and EN 1315-2:1997. The main changes with respect to EN 1315-1:1997 and EN 1315-2:1997 are listed below: a) EN 1315-1:1997 and EN 1315-2:1997 have been merged into one standard; b) Sco

13、pe has been modified according to the merging; c) Classes D 6 and R 6 have been modified, Classes D 7/R 7 and D 8/R 8 have been added; d) 4.2 “Length classes“ and 4.3 “Combination of mid diameter and length classes“ of EN 1315- 2:1997 have been deleted. According to the CEN/CENELEC Internal Regulati

14、ons, the national standards organizations 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,

15、 Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1315:2010EN 1315:2010 (E) 4 1 Scope This European Standard specifies a dimensional classification for round timber (softwood and hardwood) for which the intended use is not k

16、nown. 2 Normative references The following referenced documents are indispensable for the application 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 844-1:1995, Round

17、 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 timber Terminology Part 5: Terms relating to dimensions of round timber EN 1309-2, R

18、ound and sawn timber Method of measurement of dimensions Part 2: Round timber Requirements for measurement and volume calculation rules 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 844-1:1995, EN 844-2:1997 and EN 844-5:1997 apply. 4 Dimensional cl

19、assification Dimensional classification shall be made, irrespective of length, into classes according to the mid diameter under bark or over bark. The under bark classification is described by a D letter. The over bark classification is described by an R letter. The D or R letter shall specify the t

20、ype of class. If round timber is measured over bark, this should be agreed by contract including the bark allowance. Possibilities for bark allowance are e.g.: agreed reduction from the diameter (medium or top diameter); reduction in percent (%) of the circular area; use of regional common bark allo

21、wance tables. The classification shall be made using either one or the other following classes: BS EN 1315:2010EN 1315:2010 (E) 5 Table 1 Dimensional classification of round timber Class under barkClass over barkMid diameter cm D 0 D 1a D 1b D 2a D 2b D 3a D 3b D 4 D 5 D 6 D 7 D 8 R 0 R 1a R 1b R 2a

22、 R 2b R 3a R 3b R 4 R 5 R 6 R 7 R 8 10 10 to 14 15 to 19 20 to 24 25 to 29 30 to 34 35 to 39 40 to 49 50 to 59 60 to 69 70 to 79 80 Subdivisions into “a“ and “b“ subclasses may be disregarded or extended to all classes. Mid diameter shall be measured using the method stated in EN 1309-2. BS EN1315:2

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