1、Round and sawn timber - Permitted deviations and preferred sizes - Part 2: Hardwood sawn timber The European Stanard EN 1313-2: 1998 has the status of a British Standard ICs 79.040 5s EN .313-2:1999 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYBIGi LAW STD-BSI BS EN 3313-2-ENGL 1999
2、= Lb2Libb9 0866033 bL2 BS EN 1313-2:1999 - been ppared under the direction of the Sector Committee for Building and Ci Engineeing, was published under the authority of the standards Committee and comes into effect on 16 March 1999 Amd No. 10981 No. 1 8 BSI 082000 National foreword Date Text affected
3、 August 2000 Indicated by a sideline. This Brijsh StanM is the English language version of EN 131S2 1998, including conigendum August 2000. It Supersedes BS 5450:1977 which is withdram The UK participation in its preparation was entrusted by Technical Committee W54.3, Round and sawn timber, to Subco
4、mmittee B/543/2, Sawn timber, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related internaiional and European developments and promulgate interpretation, or proposals for change, and keep the U
5、K interests informed; them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secrem. National annex NA (informative) contains the recommended reduction of sawn hardwood by processing. Cross-references The British Stan& which implement intemationai
6、or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Intemationai Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards Electronic Catalogue. Informative reference BS 57561997, Sfkaton for visual
7、 stmyth gmding of hardwood. A British Standard does not purport to include all the necessary provisions of a contract Users of British standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legd obligations. Summary of page
8、s This document comprises a front cover, an inside front cover, the EN tide page, pages 2 to 4, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. ISBN O 680 32079 O STDeBSI BS EN L313-2-ENGL 1949 = Lb24bb9 OBbb034
9、559 EuRopEANsrANDARD EN 13132 NORME EUR0PEE”E EUROP- NORM November 1998 ICs 79.040 Incorporating conigendum June 1999 kript wood, sawlogs, sawn timber, hardwood, dimensional deviations, dimensionai stabiity, humidity, dimensions English version RoundandSaWnthber- Permitted deviations and preferred s
10、izes - Part2 Hardwood sawntimber Bois mnds et bois scis - Ecars admissibles et imensions p&Entielles - partie 2: Bois scis feuillus hd- und Schnioh - Zuhssige AbWeiChUngen und VOIZUKE& - Teil2Laubschni tthOlZ This European Standard was approved by CEN on 8 November 1998. CEN members are bound to com
11、ply with the CENKENELEC Internai Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Uptodate lists and bibliographicd references concerning such national standards may be obtained on application to the Centrai Secreta
12、riat or to any CEN member. This European Standard exists in three official versions (English, French, German). Aversion in any other ianguage made by translation under the responsibility of a CEN member into its own language and noed to the Central Secretariat has the same status as the official ver
13、sions. CEN members are the national standards bodies of Ausria, Belgium, Czech Republic, Denmark, Fnland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Unitd Kingdom. CEN European Committee for Standardization Comit Europe
14、n de Normalisation Europisches Komitee fur Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref. No. EN 1313-2:1998 E STD=BSI BS EN II3L3-2-ENGL II999 D II624669 0866035 495
15、 D Page 2 EN 1313-21998 Foreword This European Standard has been prepared by Technical Committee CENlC 175, Round and sawn timber, the Secretariat of which is held by AFNOR. This European Standard shali be given the status of a national stan- either by publication of an identical text or by endorsem
16、ent, at the latest by May 1999, and confiicting national standards shall be withdrawn at the latest by May 1999. According to the CEN/CENELEC Internai Regukions, the national standards organizations of the foiiowing counties are bound to implement this European Stan- Austria, Belgium, Czech Republic
17、, Denmark, Fnland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzeriand and the United Kingdom This standard is one of two conceniing permitted deviations and preferred sizes of sawn timber. The other standard is: EN 1313-1, Round an
18、d sawn timber- Permitted dayiations and pqfd sizes - Part 1: SoJEwood sawn timber. Contents Foreword 1 Scope 2 Normative references 3 Definitions 4 Moisturecontent 5 Change in size due to changes in moisture content 6 Permitfeddeviations 7 Preferredsizes Annex A (informative) Complementary national
19、sizes page 2 3 3 3 3 3 3 3 4 Q BSI 082000 STD-ES1 BS EN 1333-2-ENGL 1979 1624bb9 OBbb03b 321 Page 3 EN 1313-21998 1 scope This European Standard specifies permitted deviations and preferred sizes of European hardwood sawn timber at a moisture content of 20 %. 2 Normative references This European Sta
20、ndard incorporates, by dated or undated reference, provisions from other pubiicaons. These nonnative references are cited at the appropriate piaces in the text and the pubidons are listed hereafta For dated references, subsequent amendments to or revisions of any of these publications appiy to this
21、European Standard oniy when incorporated in it by amendment or revision. For undated references, the latest edition of the publication refemd to applies. EN 336, SEruchmL timber- ConiferozLs and poplar- sizes, pemwle d,#iuth. EN 844-1, Round and sawn timber- Tminabgy- part 1: Genmd terms common to m
22、nd timber and sawn timber. EN 844-3, Round and sawn timber- Tminabgy- Part3: kneml terms relating to sawn timber. EN 844-4, Round and sawn timber- hindogy- Partk lbms rehting to moishm content. EN 844-6, Round and sawn timber- Tmmbgy- Part 6: Terms relating to dimensms of sawn timber. EN 1309-1, Rou
23、nd and sawn tinaber- Method of measumt of dim - Part 1: Sawn timber. prEN 13183-1, Round and sawn timber- Method of measuremat of nwistum content - Part 1: Method for determining moisture content of a piece of sawn timber (Oven-dr.q method). prEN 13183-2, Round and sawn tiwtber- Method of measuremen
24、t of rrwishre content - Part 2: Method for estimating misi?uw content of a piece of sawn timber (ElecW method). 3 Denitions For the purposes of this standard, the definitions contained in EN 844-1, EN 844-3, EN 844-4 and EN 844-6 apply. 4 Moisture content The measurement of moisture content sha be c
25、arried out according to prEN 13183-1 or prEN 131B2. The reference moisture content is 20 %. 6 Change in size due to changes in moisture content Unies there is evidence to the contrary, it is assumed that the thickness and width of a piece of timber will increase by 0,25 % for every 1 % of moisture c
26、ontent higher than 20 % up to 30 %, and wiii decrease by 0,25 % for every 1 % of moisture content lower than 20 %. The above values are independent of the species. 6 Permitted deviations For a specifed number of pieces of hardwood sawn timber of the same target thickness andor width, the average thi
27、ckness andor width shall not be les than the target thickness andor widh. If the timber is for structural use, the permitted deviations shall be those specified in EN 336. The permitted deviations, at a moisture content of 20 %, are the foliowing. 6.1 On thicknesses (t) t 32mm: -lm, +3m1 t32mm: -2mm
28、,+4111 The permitted deviations of thickn- appiy to all thicknesses, not ony to preferred ones. 6.2 On widths (b) bs100mm: -2nt1, +6mm b 200m 1OOmm c b s 200 m -3mm, +9 mm I -4 mm, +12 mm 6.3 On lengths (2) - For unedged timber O, +3 % of the target and boules: length but no more than90mm. -For squa
29、re edged O, +3 % of the target timber. length but no more than90mm. 7 Preferred sizes Sizes are measured according to EN 1309-1 at a moisture content of 20 %. 7.1 Preferred thicknesses 20mm,27mm,32mm,40mm,50mm,60mm, 65 mm, 70 mm, 80 mm and 100 mm 7.2 Preferred widths 10 mm intervals for widths betwe
30、en 60 mm and 90 mm 20 mm intervals for widths of 100 nun or more 7.3 Preferred lengths For unedged timber and boules: OJO m intervals for lengths between 2,00 m and 6,00 m For square edged timber: 0,05 m intervals where I I i,00 m O, 10 m intends where I 1,OO m STD-BSI BS EN 1313-2-ENGL 1999 9 1b24b
31、b9 08bb037 268 m Page 4 EN 1313-2199s Annex A (informative) Complementary national sizes Complementary preferred sizes in Germany (DE) Thicknesses (in millimetres): 18 22 Thickness of the board for all standardized pallets 24 Standardized thickness of the industrid packages 25 30 35 45 52 63 78 “hic
32、knw of the blocks for all the standardized pallets Width (in miilimetres): 145 Width of the boards in standardized pailets, especially in Ewepallets Complementary preferred sizes in the United Kingdom (GB) Thicknesses (in millimetres): 19,26,38,52,63,75 Complementary preferred sizes in Ireland (IR)
33、Thicknesses (in milhetres): 25,38, 63,75 Complementary preferred sizes in Italy (IT) Width (in millimetres): 250 Complementary preferred sizes in the Netherlands (NL) Thicknesses (in millimetres): 15,18,26,34,41,45,52, 54,63,75 Complementary preferred sizes in Norway (NO) Width (in millimetres): 63,
34、75,125,160,250 Complementary preferred sizes in France (FR) Thicknaes (in millimetres): 3655 Q BSI 082000 National annex NA (informative) Reduction of sawn hardwoods by processing NA.1 General Processing of hardwoods to accurate finished sizes involves rextions in size which vary with the size, the
35、process and the product. The figures in Table NA1 have been established in the United Kingdom as being economic, workable and not wasteful. NA.2 Reductions The recommended reductions appropriate to some end uses and products appear in Table NA.1. Any finished sizes in British Standards covering part
36、icular hardwood products and components will take precedence over those in Table NA1. For other end uses not specifically mentioned, the same figures as those for one of the end uses listed may be adopted. intermediate figures would be unlikely to achieve any greater accuracy and would tend to confu
37、se. If the timber is for structurai use, the reduction hits specified in BS 6766 apply. NA.3 Permitted deviations For all finished sizes after processing, permitted deviations of fo,5 mm are recommended If the timber is for structurai use, the permitted deviations specified in BS EN 336 apply. End u
38、se or product Floorings,matchingsand interlocked boarding and planed aii round nhn Joinery and cabinet wood Reduction from sawn size to ilnished target size For target sizes of width or thickness 15 to 26 26to 50 51 to 100 101 to 150 151 to 300 5 6 7 7 7 6 7 8 9 10 7 9 10 12 14 BS EN 1313-2:1999 BSI
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