BS EN 1309-2-2006 Round and sawn timber - Method of measurement of dimensions - Part 2 Round timber - Requirements for measurement and volume calculation rules《圆木和锯木 尺寸测量方法 圆木 测量和体.pdf

《BS EN 1309-2-2006 Round and sawn timber - Method of measurement of dimensions - Part 2 Round timber - Requirements for measurement and volume calculation rules《圆木和锯木 尺寸测量方法 圆木 测量和体.pdf》由会员分享，可在线阅读，更多相关《BS EN 1309-2-2006 Round and sawn timber - Method of measurement of dimensions - Part 2 Round timber - Requirements for measurement and volume calculation rules《圆木和锯木 尺寸测量方法 圆木 测量和体.pdf（20页珍藏版）》请在麦多课文档分享上搜索。

1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58dimensions Part 2: Round timber Requirements for measurement and volume calculation rulesThe Europe

2、an Standard EN 1309-2:2006 has the status of a British StandardICS 79.040Round and sawn timber Method of measurement of BRITISH STANDARDBS EN1309-2:2006BS EN 1309-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2006 BSI 2006IS

3、BN 0 580 49092 0Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electron

4、ic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis do

5、cument comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizati

6、ons represented on this committee can be obtained on request to its secretary. present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulg

7、ate them in the UK.National forewordThis British Standard is the official English language version of EN 1309-2:2006. The UK participation in its preparation was entrusted to Technical Committee B/543, Round and sawn timber, which has the responsibility to: aid enquirers to understand the text;EUROP

8、EAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1309-2March 2006ICS 79.040English VersionRound and sawn timber - Method of measurement ofdimensions - Part 2: Round timber - Requirements formeasurement and volume calculation rulesBois ronds et bois scis - Mthode de mesure desdimensions - Partie 2: Bois

9、ronds - Exigences pour lamesure et les rgles de calcul du volumeRund- und Schnittholz - Verfahren zur Messung der Mae -Teil 2: Rundholz - Anforderungen an die Messung undRegeln zur VolumenberechnungThis European Standard was approved by CEN on 23 January 2006.CEN members are bound to comply with the

10、 CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or t

11、o any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.C

12、EN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switz

13、erland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1

14、309-2:2006: EEN 1309-2:2006 (E) 2 Contents Page Foreword4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions .6 4 Measurement and volume calculation of round timber.6 4.1 General6 4.2 Length .6 4.2.1 Apparatus .6 4.2.2 Methods of measurement .7 4.2.3 Recording results 7 4.3 D

15、iameter7 4.3.1 Apparatus .7 4.3.2 Method of measurement .7 4.3.3 Recording of results7 4.4 Calculation volume7 5 Measurement and volume calculation of stacks 8 5.1 Apparatus .8 5.2 Methods of measurement .8 5.3 Determination of stacked volume 8 6 Measurement of weight Round timber and stacks8 6.1 ge

16、neral 8 6.2 Apparatus .8 6.3 Methods of measurement .8 6.4 Recording results 8 Annex A (informative) Examples of round timber measurement and volume calculation rules that meet the requirements given in this standard9 A.1 Austria.9 A.2 Czech Republic 9 A.3 Finland 10 A.4 France .11 A.5 Germany .12 A

17、.6 Ireland .12 A.7 Italy12 A.8 Lithuania .12 A.9 Netherlands 12 A.10 Norway 12 A.11 Sweden .12 A.12 Switzerland.12 A.13 United kingdom13 Annex B (normative) Measurement and volume calculation rules to apply when no national, regional or provincial rules exist .14 B.1 length 14 B.1.1 Apparatus .14 B.

18、1.2 Methods of measurement .14 B.1.3 Recording of results14 B.2 Diameter14 EN 1309-2:2006 (E) 3 B.2.1 Apparatus.14 B.2.2 Measurement .15 B.2.3 Method of measurement.15 B.2.4 Recording of results15 B.2.5 Determination of the volume16 EN 1309-2:2006 (E) 4 Foreword This document (EN 1309-2:2006) has be

19、en 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, at the latest by September 2006, and conflicting na

20、tional standards shall be withdrawn at the latest by September 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland,

21、France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 1309-2:2006 (E) 5 Introduction There are many different round timber measurement and

22、volume calculation rules in Europe. These have come into being based on historical influences and traditions. Much sawmilling and forestry data is based on these differing rules. Because of the diversity of existing rules in different countries, and in some cases between different regions in the sam

23、e country, it is currently impossible to lay down a single set of acceptable rules for all member states. This standard therefore gives basic principles which are to be followed when drawing up round timber measurement and volume calculation rules. Examples of rules currently in use and which meet t

24、hese principles are listed in Annex A. Annex B applies where no national, regional or provincial rules exist. This standard is one of a series, being methods of measurement for round timber and sawn timber. Other standards in this series are: EN 1309-1, Round and sawn timber Method of measurement of

25、 dimensions - Part 1: Sawn timber EN 1310, Round and sawn timber Method of measurement of features EN 1311, Round and sawn timber Method of measurement of biological degrade EN 1315-1, Dimensional classification Part 1: Hardwood round timber EN 1315-2, Dimensional classification Part 2: Softwood rou

26、nd timber EN 1309-2:2006 (E) 6 1 Scope This European Standard defines the principles which are to be used in the derivation of round timber measurement and volume calculation rules. This standard applies to rules for measuring hardwood and softwood felled round timber. It does not apply to tropical

27、timber. 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, Rou

28、nd 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 844-7:1

29、997, 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 844-12:2000, Round and sawn timber Terminology Part 12: Additional terms and general index 3 Terms an

30、d 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 844-12:2000 apply. 4 Measurement and volume calculation of round timber 4.1 General Round timber measurement and volume calculation rul

31、es shall include as a minimum the following requirements when establishing the parameters that are to be used when calculating volume. Where no national, regional or provincial rules exist, the methods specified in Annex B shall apply. 4.2 Length 4.2.1 Apparatus A manual or automatic measuring devic

32、e shall be specified. The requirements of calibration and accuracy shall be stated. EN 1309-2:2006 (E) 7 4.2.2 Methods of measurement Rules shall clearly define how the length of the following types of timber shall be measured: straight round timber; round timber with a simple sweep; round timber wi

33、th multiple sweep; round timber with undercut or a butt trimming. 4.2.3 Recording results The unit of metric measurement shall be stated. If a nominal length is required the length shall be rounded down to the nearest nominal length. The rounding conventions shall be specified. 4.3 Diameter 4.3.1 Ap

34、paratus A manual or automatic measuring device shall be specified. The requirements of calibration and accuracy shall be stated. 4.3.2 Method of measurement Rules shall define: where the diameter is to be measured; procedure when the preferred measuring point is not available; number of measurements

35、 to be made when using the specified apparatus; whether the measurement is to be taken over or under bark and any conversion methods. 4.3.3 Recording of results The unit of metric measurement shall be stated. When two or more measurements are taken the procedure for calculating the mean shall be def

36、ined. The rounding convention used when expressing results shall be stated. 4.4 Calculation volume The unit of metric measurement shall be stated. Rules shall show the formula by which the volume is calculated. The rounding convention used shall be stated. EN 1309-2:2006 (E) 8 5 Measurement and volu

37、me calculation of stacks 5.1 Apparatus A manual or automatic measuring device shall be specified. The requirements of calibration and accuracy shall be stated. 5.2 Methods of measurement The unit of metric measurement shall be stated. If the volume determination is based on width, depth and length,

38、rules shall define how these shall be measured. Rules shall also describe the number and position of measurements required to be taken dependent on the type of stack. 5.3 Determination of stacked volume The unit of metric measurement shall be stated. Rules shall show the formula by which the volume

39、is calculated. If solid volume of stack is to be calculated, rules shall define the calculation procedure. The rounding convention used shall be stated. 6 Measurement of weight Round timber and stacks 6.1 General There are two measures of the weight of wood: dry weight or green weight. The method of

40、 determination for each method of weight measurement shall be specified. 6.2 Apparatus Calibrated measuring devices shall be specified together with the required degree of accuracy. 6.3 Methods of measurement It shall be specified how the weight of round timber and stacks shall be calculated for eac

41、h method of weight measurements. 6.4 Recording results Weight shall be expressed in metric tons or kilograms. The rounding convention used when expressing results shall be stated. When two or more measurements are taken the procedure for calculating the mean shall be defined. EN 1309-2:2006 (E) 9 An

42、nex A (informative) Examples of round timber measurement and volume calculation rules that meet the requirements given in this standard1A.1 Austria sterreichische Holzhandelsusancen 1973; edition 2001 NORM L 1021; edition 2001-04-01 A.2 Czech Republic SN 48 0007 Tabulky objemu kulatiny podle stedov

43、tlouky Tables of logs volume according to mid diameter SN 48 0008 Tabulky objemu vez podle epov tlouky Tables of logs volume according to top diameter SN 48 0009 Tabulky objemu kulatiny bez kry podle stedov tlouky men v ke Volume tables of roundwood under bark according to mid diameter measured over

44、 bark SN 48 0050 Surov dv Zkladn a spolen ustanoven Rough wood Basic and common regulations SN 48 0055 Jehlinat sortimenty surovho dv Technick poadavky Coniferous assortments of raw wood Technical requirements SN 48 0056 Listnat sortimenrty surovho dv Technick poadavky Broadleaved assortments of raw

45、 wood Technical requirements Examples of determination of timber volume by weight (not stated in SN 48 0050): Measurement of timber by green weight Green weight of each delivery is determined as the difference between brutto weight found out on the arrival in the mill (weight of a truck + load) and

46、the weight of a truck after unloading. Larger cover of snow, ice or rime has to be removed from the load. Timber is weighed at the calibrated weighbridge (railweight) with the printer. One mark on a scale is 50 kg at maximum. Weigh card is printed specifying the weight of load and all identification

47、 numbers of load. Measurement of timber by oven-dry weight This method is based on comparison of green weight of a sample with its oven-dry weight. 1Unofficial translations in italics EN 1309-2:2006 (E) 10 Taking of samples Samples are taken from each delivery in a representative way. Takings of saw

48、dust samples are conducted by a motor saw, at least on 10 pieces of timber loaded on trucks or 15 pieces of timber loaded on wagons. A cut made with the motor saw shall go through of a half of log diameter all the way to the heartwood and samples are taken at the distances at least 25 cm from the ea

49、ch end of a log. Sawdust from one delivery is mixed together and put into a suitable transport packing preventing sawdust from the dry-up. The packing shall be labeled with all identification numbers. Determination of dry matter of samples Dry matter is expressed as a share of oven-dry and green weights of a sample. Green weight of a sample is determined immediately after sampling. For drying from a mixed sample at