1、BRITISH STANDARD BS EN 1611-1:2000 Incorporating Corrigendum No. 1 and Amendment No. 1 Sawn timber Appearance grading of softwoods Part 1: European spruces, firs, pines, Douglas fir and larches The European Standard EN 1611-1:1999, with the incorporation of amendment A1:2002, has the status of a Bri
2、tish Standard ICS 79.040 BS EN 1611-1:2000 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee on 15 April 2000 BSI 17 January 2003 ISBN 0 580 32955 0 National forewor
3、d This British Standard is the official English language version of EN 1611-1:1999, including amendment A1:2002. The start and finish of text introduced or altered by amendment is indicated in the text by tags . Tags indicating changes to CEN text carry the number of the CEN amendment. For example,
4、text altered by CEN amendment A1 is indicated by . The UK participation in its preparation was entrusted by Technical Committee B/543, Round and sawn timber, to Subcommittee B/543/2, Sawn timber, which has the responsibility to: A list of organizations represented on this subcommittee can be obtaine
5、d on request to its secretary. Cross-references The 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
6、the BSI Electronic 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. aid e
7、nquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This
8、document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 12038 Corrigendum No. 1 October 2000 Co
9、rrects front cover 13926 17 January 2003 See national forewordEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1611-1August 1999+ A1August 2002ICS 79.040.00 English version Sawn timber - Appearance grading of softwoods - Part 1 : European spruces, firs, pines, Douglas fir and larches (includes a
10、mendment A1:2002) Bois scis - Classement daspect des bois rsineux - Partie 1 : Epicas, sapins, pins, Douglas et mlzes europens (inclut lamendement A1:2002) Schnittholz - Sortierung nach dem Aussehen von Nadelholz - Teil 1 : Europasche Fichten, Tannen, Kiefern, Douglasie und Lrchen (enthlt nderung A1
11、:2002) This European Standard was approved by CEN on 23 July 1999. Amendment A1 was approved by CEN on 1 May 2002. 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
12、alteration. Up-to-date lists and bibliographical references concerning such national standards 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 made by t
13、ranslation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Irela
14、nd, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 B-1050 Brussels 1999 CEN All rights of exploitation in an
15、y form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1611-1:1999 + A1:2002 EPage 2 EN 1611-1:1999 BSI 17 January 2003 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions . 3 4 Rules for grading. 3 4.1 General rules 3 4.2 Determination of features. 4
16、5 Tables of rules for grading 5 Table 1 : Grading on two faces Maximum accepted values for knots for European spruces, firs, pines and Douglas firs 5 Table 2 : Grading on four sides Maximum accepted values for knots for European spruces , firs, pines and Douglas firs 6 Table 3 : Grading on two faces
17、 or four sides Maximum accepted values of other features for European spruces, firs, pines and Douglas firs 8 Foreword This European Standard has been prepared by the Technical Committee CEN/TC175, Round and sawn timber, the Secretariat of which is held by AFNOR. This European Standard shall be give
18、n the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2000, and conflicting national standards shall be withdrawn at the latest by February 2000. According to the CEN/CENELEC Internal Regulations, the national standards organizat
19、ions of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This standard is one of a
20、 series of standards concerning appearance grading of non-structural timber. The other standard of this series is: EN 975-1 Sawn timber - Appearance grading of hardwoods - Part 1: Oak and beech. Foreword to amendment A1 This amendment EN 1611-1:1999/A1:2002 to the EN 1611-1:1999 has been prepared by
21、 Technical Committee CEN/TC 175, Round and sawn timber, the Secretariat of which is held by AFNOR. This amendment to the European Standard EN 1611-1:1999 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2003, an
22、d conflicting national standards shall be withdrawn at the latest by February 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, Fr
23、ance, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Page 3 EN 1611-1:1999 BSI 17 January 2003 1 Scope This European Standard defines appearance grades for European spruces, firs, pines, Douglas fir. and l
24、arches . The standard applies to dry and green sawn timber. This standard does not apply to the strength grading of structural timber. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at
25、 the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this part of European standard only when incorporated in it by amendment or revision. For undated references, the latest ed
26、ition of the publication referred to applies. EN 844-1 Round and sawn timber - Terminology - Part 1 : General terms common relating to round timber and sawn timber EN 844-3 Round and sawn timber - Terminology - Part 3 : General terms relating to sawn timber EN 844-4 Round and sawn timber - Terminolo
27、gy - Part 4 : Terms relating to moisture content EN 844-6 Round and sawn timber - Terminology - Part 6 : Terms relating to dimensions of sawn timber EN 844-7 Round and sawn timber - Terminology - Part 7 : Terms relating to anatomical structure of timber EN 844-9 Round and sawn timber - Terminology -
28、 Part 9 : Terms relating to features of sawn timber EN 844 -10 Round and sawn timber - Terminology - Part 10: Terms relating to stain and fungal attack EN 844-11 Round and sawn timber - Terminology - Part 11: Terms relating to degrade by insects. EN 1310:1997 Round and sawn timber - Method of measur
29、ement of features EN 1311 Round and sawn timber - Method of measurement of biological degrade 3 Definitions For the purposes of this standard, the definitions in EN 844-1, EN 844-3, EN 844-4, EN 844-6, EN 844-7, EN 844-9, EN 844-10 and EN 844-11 apply. 4 Rules for grading 4.1 General rules This stan
30、dard gives two grading procedures, G2 and G4 : G2 Knots on two faces (see table 1) and other features as per table 3 (Grades : G2-0, G2-1, .) G4 Knots on two faces and two edges (see table 2) and other features as per table 3 (Grades : G4-0, G4-1, .)Page 4 EN 1611-1:1999 BSI 17 January 2003 The grad
31、ing procedure used shall be specified in the contract. The grade of a piece of timber is based on the judgement of grade on each face/side separately. Procedure G2: If both faces are of the same grade, this is the grade of the piece. If there is a better and a worse face, the grade of the piece is o
32、ne grade better than the grade of the worse face. Procedure G4: If all four sides are of the same grade, this is the grade of the piece. If one of the faces is of a lower grade than any of the other three sides, the grade of the piece is one grade better than the grade of this worse face. If one of
33、the edges has the lowest grade among the four sides, this lowest grade is the grade of the piece. This standard only defines the lower limit of each grade. Any batch of softwood supplied graded to these rules shall contain a fair distribution of quality. When assessing the quality of a batch the max
34、imum number of non-conforming pieces shall be determined by reference to contract terms. 4.2 Determination of features 4.2.1 General Features are measured according to EN 1310. 4.2.2 Knots Knots shall be assessed with regard to form, position and condition : Knots of 10 mm or less are not considered
35、 unless unsound or loose ; Round or oval knots on faces are to be measured in accordance with 4.1.1 of EN 1310:1997 including the compensation rule; Round or oval knots on edges are to be measured in accordance with 4.1.2 of EN 1310:1997. NOTE 1: An intergrown knot can appear as a partially intergro
36、wn knot or a dead knot on the opposite face. NOTE 2: A partially intergrown knot can appear as an intergrown knot or a dead knot on the opposite face. NOTE 3: A dead knot can appear as an intergrown knot or a partially intergrown knot on the opposite face. 4.2.3 Wane Wane with bark is not permitted.
37、Page 5 EN 1611-1:1999 BSI 17 January 2003 5 Tables of rules for grading Table 1 : Grading on two faces Maximum accepted values for knots for European spruces, firs, pines, Douglas fir and larches (to be used in conjunction with clauses 1 to 4) see NOTE FEATURES LIMITS grade G2-0 grade G2-1 grade G2-
38、2 grade G2-3 grade G2-4 (A) Size of round/oval knots on graded face sound intergrown 10% of width + 10 mm 10% of width + 20 mm 10% of width + 35 mm 10% of width + 50 mm unlimited but (B) dead or partially intergrown 10% of width + 0 mm 10% of width + 10 mm 10% of width + 20 mm 10% of width + 50 mm m
39、aintaining encased (bark ringed) not permitted 10% of width + 0 mm 10% of width + 15 mm 10% of width + 40 mm the integrity unsound or loose not permitted not permitted 10% of width + 15 mm 10% of width + 40 mm of the piece (A) Knot number per worst meter total number 2 4 6 unlimited (C) of which uns
40、ound / loose or encased 0 1 (*) 25 of which spike and splay 0 4 6 unlimited (*) only applies to encased knots NOTES : (A) Knots of 10 mm or less are not considered unless unsound or loose (B) In spruces, firs, Douglas fir and larches in widths of 225 mm or wider, knot size shall be increased by 10 m
41、m In pines in widths of 180 mm or wider, knot size shall be increased by 10 mm (C) For pieces for which the width is in excess of 225 mm the total number of knots shall be increased by 50%Page 6 EN 1611-1:1999 BSI 17 January 2003 Table 2 : Grading on four sides Maximum accepted values for knots for
42、European spruces, firs, pines, Douglas fir and larches (to be used in conjunction with clauses 1 to 4) see NOTE FEATURES LIMITS grade G4-0 grade G4-1 grade G4-2 grade G4-3 grade G4-4 (A) Size of round/oval knots on graded face sound intergrown 10% of width + 10 mm 10% of width + 20 mm 10% of width +
43、 35 mm 10% of width + 50 mm (B) dead or partially intergrown 10% of width + 0 mm 10% of width + 10 mm 10% of width + 20 mm 10% of width + 50 mm unlimited encased (bark ringed) not permitted 10% of width + 0 mm 10% of width + 15 mm 10% of width + 40 mm unsound or loose not permitted not permitted 10%
44、 of width + 15 mm 10% of width + 40 mm but (A) Size of round/oval knots on the edges sound intergrown- % of thickness 50 90 100 100 maintaining - maximum size no larger than maximum permitted face knot (D) dead or partially intergrown -% o f thickness 33 67 75 100 the - maximum size no larger than m
45、aximum permitted face knot integrity encased (bark ringed) -% o f thickness 03 35 09 0 - maximum size no larger than maximum permitted face knot of the piece unsound or loose -% o f thickness 0 0 50 90 - maximum size no larger than maximum permitted face knot ./.Page 7 EN 1611-1:1999 BSI 17 January
46、2003 Table 2 (concluded) see NOTE FEATURES LIMITS grade G4-0 grade G4-1 grade G4-2 grade G4-3 grade G4-4 Knot number on graded face per worst metre total number 2 4 6 unlimited unlimited but (A) of which unsound / loose or encased 0 1(*) 25 maintaining of which spike and splay 0 4 6 unlimited (C) Kn
47、ot number per worst metre on either edge total number 1 2 4 unlimited the integrity of which unsound/ loose or encased 0 1 2 3 of the piece(*)only applies to encased knots NOTES : (A) Knots of 10 mm or less are not considered unless unsound or looose (B) In spruces, firs, Douglas fir and larches in
48、widths of 225 mm or wider, knot size shall be increased by 10 mm In pines in widths of 180 mm or wider, knot size shall be increased by 10 mm (C) For pieces for which the width is in excess of 225 mm the total number of knots shall be increased by 50% (D) Traversing knots are allowed in a piece of g
49、rades G4-2, G4-3 and G4-4.Page 8 EN 1611-1:1999 BSI 17 January 2003 Table 3 : Grading on two faces or four sidesMaximum accepted values of other features for European spruces, firs, pines, Douglas fir and larches (to be used in conjunction with clauses 1 to 4) See NOTE FEATURES LIMITS grade G2/G4-0 grade G2/G4-1 grade G2/G4-2 grade G2/G4-3 grade G2/G4-4 Bark pockets number per worst metre 0 2 2 4 unlimited on graded face total length (mm) 0 100 200 3
