DIN EN 1309-2-2006 Round and sawn timber - Method of measurement of dimensions - Part 2 Round timber - Requirements for measurement and volume calculation rules English version of .pdf

1、 DEUTSCHE NORMJune 2006DIN EN 1309-2 ICS 79.040 Round and sawn timber Method of measurement of dimensions Part 2: Round timber Requirements for measurement and volume calculation rules English version of DIN EN 1309-2:2006-06 Rund- und Schnittholz Verfahren zur Messung der Mae Teil 2: Rundholz Anfor

2、derungen an die Messung und Regeln zur Volumenberechnung Englische Fassung DIN EN 1309-2:2006-06 Document comprises 18 pages No part of this standard may be reproduced without prior permission of DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclu

3、sive right of sale for German Standards (DIN-Normen). English price group 10 www.din.de www.beuth.de !,o0“10.06 9761327DIN EN 1309-2:2006-06 2 National foreword This standard has been prepared by CEN/TC 175 Round and sawn timber (Secretariat: France). The responsible German body involved in its prep

4、aration was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Committee), Technical Committee NA 042-01-14 AA Rund- und Schnittholz. EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1309-2March 2006ICS 79.040English VersionRound and sawn timber - Method of measurement ofdi

5、mensions - Part 2: Round timber - Requirements formeasurement and volume calculation rulesBois ronds et bois scis - Mthode de mesure desdimensions - Partie 2: Bois ronds - Exigences pour lamesure et les rgles de calcul du volumeRund- und Schnittholz - Verfahren zur Messung der Mae -Teil 2: Rundholz

6、- 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 CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard with

7、out any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language mad

8、e 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.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Gre

9、ece, 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 NORMUNGManagement C

10、entre: 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 1309-2:2006: EEN 1309-2:2006 (E) 2 Contents Page Foreword4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions .6

11、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 Diameter7 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

12、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 general 8 6.2 Apparatus .8 6.3 Methods of measurement .8 6.4 Recording results 8 Annex A (informative) Examples of round timber measuremen

13、t 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.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

14、 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.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

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 been prepared by Technical Committee CEN/TC 175 “Round and sawn timber”, the secretariat of which is held by AFNOR. This European Standard

16、 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 national standards shall be withdrawn at the latest by September 2006. According to the CEN/CENELEC Internal Regulations, the national sta

17、ndards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

18、Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 1309-2:2006 (E) 5 Introduction There are many different round timber measurement and volume calculation rules in Europe. These have come into being based on historical influences and traditions. Much sawmilling and forest

19、ry 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 same country, it is currently impossible to lay down a single set of acceptable rules for all member states. This standard therefore gives

20、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 these principles are listed in Annex A. Annex B applies where no national, regional or provincial rules exist. This standard is one of a

21、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 dimensions - Part 1: Sawn timber EN 1310, Round and sawn timber Method of measurement of features EN 1311, Round and sawn timber Method

22、 of measurement of biological degrade EN 1315-1, Dimensional classification Part 1: Hardwood round timber EN 1315-2, Dimensional classification Part 2: Softwood round 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 tim

23、ber measurement and volume calculation rules. This standard applies to rules for measuring hardwood and softwood felled round timber. It does not apply to tropical timber. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refe

24、rences, 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 Termino

25、logy 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 timber Ter

26、minology 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 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-

27、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 rules shall include as a minimum the following requirements when establishing the parameters that are to be used when calculating volume. W

28、here 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 device shall be specified. The requirements of calibration and accuracy shall be stated. EN 1309-2:2006 (E) 7 4.2.2 Methods of measurement Ru

29、les 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 with multiple sweep; round timber with undercut or a butt trimming. 4.2.3 Recording results The unit of metric measurement shall be stated

30、. 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 Apparatus A manual or automatic measuring device shall be specified. The requirements of calibration and accuracy shall be stated. 4.3.2 M

31、ethod of measurement Rules shall define: where the diameter is to be measured; procedure when the preferred measuring point is not available; number of measurements to be made when using the specified apparatus; whether the measurement is to be taken over or under bark and any conversion methods. 4.

32、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 defined. The rounding convention used when expressing results shall be stated. 4.4 Calculation volume The unit of metric measurement shall

33、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 volume calculation of stacks 5.1 Apparatus A manual or automatic measuring device shall be specified. The requirements of calibration and ac

34、curacy 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, rules shall define how these shall be measured. Rules shall also describe the number and position of measurements required to be taken d

35、ependent 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 is calculated. If solid volume of stack is to be calculated, rules shall define the calculation procedure. The rounding convention used

36、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 determination for each method of weight measurement shall be specified. 6.2 Apparatus Calibrated measuring devices shall be specified t

37、ogether 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 each method of weight measurements. 6.4 Recording results Weight shall be expressed in metric tons or kilograms. The rounding convention us

38、ed 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 Annex A (informative) Examples of round timber measurement and volume calculation rules that meet the requirements given in this standard1

39、A.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 tlouky Tables of logs volume according to mid diameter SN 48 0008 Tabulky objemu vez podle epov tlouky Tables of logs volume according t

40、o 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 bark SN 48 0050 Surov dv Zkladn a spolen ustanoven Rough wood Basic and common regulations SN 48 0055 Jehlinat sortimenty surovho dv Te

41、chnick poadavky Coniferous assortments of raw wood Technical requirements SN 48 0056 Listnat sortimenrty surovho dv Technick poadavky Broadleaved assortments of raw wood Technical requirements Examples of determination of timber volume by weight (not stated in SN 48 0050): Measurement of timber by g

42、reen 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 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 calib

43、rated 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 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-

44、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 sawdust 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 c

45、ut 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 each end of a log. Sawdust from one delivery is mixed together and put into a suitable transport packing preventing sawdust from the dry-u

46、p. 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 least 150 g must

47、be taken and weight calibrated with accuracy of 0.01 g. Drying is under way for 8 to 12 hours in laboratory drying box with air circulation at temperature (103 2) C up to the constant weight of a sample. After the dry-up, a sample shall be weighed to determine oven-dry weight. Dry matter is a share

48、of oven-dry weight of a sample and its green weight. Formula: wodmmmw =where mw is the green weight of a sample m0is oven-dry weight of a sample wdmis value of dry matter Determination of oven-dry weight of load Oven-dry weight of load is calculated as the product of green weight and dry matter as f

49、ollows: dmgwowGG = where: G0is oven-dry weight Ggwis green weight wdmis value of dry matter Taking of samples, determination of weight, drying, calculations and records are conducted by a skilled person who is supervised by an independent body. Detailed technical conditions are set out according to the national rules. A.3 Finland Hakkuukonemittaus (MMM*:n mrykset nro 100/99 Dnro 2424/66/99 27.10.1999) Scaling of timber by harvesters or ti