1、 DEUTSCHE NORMJune 2006DIN EN 14951 ICS 79.060.99 Partially supersedes DIN 68126-1:1983-07 Solid hardwood panelling and cladding Machined profiles elements English version of DIN EN 14951:2006-06 Innen- und Auenbekleidungen aus massivem Laubholz Profilholzelemente Englische Fassung DIN EN 14951:2006
2、-06 Document comprises 27 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 exclusive right of sale for German Standards (DIN-Normen). English price group 12 www.din.de www.b
3、euth.de !,o/;“10.06 9761224DIN EN 14951:2006-06 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 preparation was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Commi
4、ttee), Technical Committee NA 042-01-14 AA Rund- und Schnittholz. Amendments This standard differs from DIN 68126-1:1983-07 as follows: a) New terms and definitions have been included. b) Some rules for the most commonly used species have been amended or stated more precisely (see subclause 5.3.2).
5、c) A classification named free class has been specified. Previous editions DIN 68126-1: 1968-11, 1970-08, 1977-08, 1983-07 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14951March 2006ICS 79.060.99English VersionSolid hardwood panelling and cladding - Machined profileselementsLambris et bardages
6、 en bois massif feuillus - Lamesprofiles usinesInnen- und Auenbekleidungen aus massivem Laubholz -ProfilholzelementeThis 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 E
7、uropeanStandard 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 to any CEN member.This European Standard exists in three official versions (English
8、, 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.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Re
9、public, Denmark, Estonia, Finland, France,Germany, Greece, 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 N
10、ORMALISATIONEUROPISCHES 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 14951:2006: EEN 14951:2006 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5
11、2 Normative references 5 3 Terms and definitions .5 4 Symbols and abbreviations 6 5 Requirements.6 5.1 General6 5.2 Wood species.6 5.3 Appearance 6 5.3.1 General uses 6 5.3.2 Rules for the most commonly used species 7 5.3.3 Free class .17 5.3.4 Natural colours.17 5.4 Moisture content17 5.5 Geometric
12、al characteristics17 5.5.1 General17 5.5.2 Dimensional characteristics .17 5.5.3 Examples of profiles18 5.5.4 Nominal dimensions20 5.5.5 Permitted deviations from nominal dimensions of the element.20 5.5.6 Squareness and other angular deviations 20 5.5.7 Machining .21 5.6 Technical specifications an
13、d properties .21 5.6.1 Specific site requirements 21 5.6.2 Appearance 21 6 Sampling.22 7 Marking .22 Annex A (normative) Principles for the classification of the free class23 Annex B (informative) Sampling in case of dispute 24 Bibliography 25 EN 14951:2006 (E) 3 Foreword This document (EN 14951:200
14、6) 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 publication of an identical text or by endorsement, at the latest by September 2006, and confl
15、icting national standards shall be withdrawn at the latest by September 2006. This standard is one of a series of standards concerning solid wood panelling and wood flooring (including parquet). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
16、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, Romania, Slovakia, Slovenia, Spain, Sw
17、eden, Switzerland and United Kingdom. EN 14951:2006 (E) 4 Introduction This document specifies the characteristics of solid hardwood panelling and cladding elements. It is based upon current dimensional standards within the industry and other characteristics together with functions that have been ve
18、rified by test. A large amount of knowledge exists about solid hardwood panelling and cladding elements and values for product characteristics are attested by long use and experience. It is therefore not necessary to have test results for those products and species described. The appearance of the h
19、ardwood panelling and cladding is mainly influenced by species, classification and the pattern (e.g. the profile and system of assembly). EN 14951:2006 (E) 5 1 Scope This document specifies the characteristics of solid hardwood panelling and cladding elements with or without grooves and/or tongues,
20、for interior or exterior use. It does not cover characteristics of the possible coating system. NOTE 1 Products sold in The European Economic Area will have to comply with prEN 14915. NOTE 2 For softwood see EN 14519. 2 Normative references The following referenced documents are indispensable for th
21、e 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 351-1, Durability of wood and wood-based products Preservative-treated solid wood Part 1: Classification
22、of preservative penetration and retention EN 460, Durability of wood and wood-based products - Natural durability of solid wood - Guide of the durability requirements for wood to be used in hazard classes EN 844-9:1997, Round and sawn timber Terminology Part 9: Terms relating to features of sawn tim
23、ber EN 1309-1:1997, 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 of measurement of biological degrade EN 13183-1, Moisture content of a piece of sawn timber - P
24、art 1: Determination by oven dry method EN 13183-2, Moisture content of a piece of sawn timber - Part 2: Estimation by electrical resistance method EN 13647, Wood and parquet flooring and wood panelling and cladding - Determination of geometrical characteristics EN 13756:2002, Wood flooring Terminol
25、ogy prEN 14915, Solid wood panelling and cladding - Characteristics, evaluation of conformity and marking 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13756:2002, EN 844-9:1997 and EN 1309-1:1997 and the following apply. 3.1 panelling and cladding
26、without tongue and groove boards of solid wood without “tongue and groove” that have been machined on the face and two edges. The back is either machined or hit and/or missed, depending on the product. The arrises may be chamfered or rounded. For special purposes (for instance, acoustic) the edges m
27、ay have fastening grooves. The ends of the boards may be end-matched. EN 14951:2006 (E) 6 3.2 panelling and cladding with tongue and groove tongued and grooved boards of solid wood which have been machined on the face and two edges. The back is either machined or hit and/or missed, depending on the
28、product. The ends of the boards may be end-matched with tongue and groove. 3.3 panelling rigid or semi-rigid elements of solid wood mainly for interior use 3.4 cladding rigid or semi-rigid elements of solid wood mainly for exterior use 3.5 hit or missed feature of the surface of a board where some a
29、reas of a face remain untouched during the planning process, leaving a sawn or partially sawn finish 4 Symbols and abbreviations Symbols and abbreviations used in this document are given in Figures 1 and 2 and in Tables 10 and 11. 5 Requirements 5.1 General All requirements apply at the time of prod
30、uction, unless the manufacturer states otherwise. Finger jointing is acceptable and has to be specified by the manufacturer. NOTE The bonding should be appropriate for the intended use (see prEN 13307-2). 5.2 Wood species The most commonly used hardwood species for wood panelling and cladding elemen
31、ts are those mentioned in 5.3.2.1 to 5.3.2.4 (European species) and 5.3.2.5 (Tropical species and other species). Other species may be used if indicated in contracts. 5.3 Appearance 5.3.1 General uses The following tables identify the features, and their limits, that shall be considered with regard
32、to the appearance, use and general characteristics of the species where assigned to each grade. Tables 1 to 9 define the classification relating to appearance rules for the face and for the non-visible parts (back and edges) of an element of the most commonly used hardwood species for solid wood pan
33、elling and cladding as defined in this standard. Features shall be measured according to EN 1310 (knots assessed according to the general method of EN 1310). Biological alteration is measured according to EN 1311. A classification with two appearance classes is specified, designated A and B. A class
34、ification named “Free class“ is based on the principles laid out in Annex A. EN 14951:2006 (E) 7 The face shall include the entire visible surface of the element. It shall therefore extend to the chamfering1), if any. The wood shall be free from shake and shall be sound. Sapwood cannot always be dis
35、tinguished and generally is not suitable for external use. The boards may be finished with a surface coating. The grading is done before the coating is applied. 5.3.2 Rules for the most commonly used species 5.3.2.1 Quercus spp.(oak) Rules for oak are given in Table 1 1) The chamfering is visible wh
36、en elements are assembled. EN 14951:2006 (E) 8 Table 1 Classification for Quercus spp.(oak) Face of the element Features b) c) d)Class A B Sound sapwooda)Not permitted for outdoor use, permitted for indoor use Not permitted for outdoor use, permitted for indoor use Knotse)Sound and intergrown Unsoun
37、d knots (if not in clusters) Permitted if: 20% of the width of the element diameter 2 mm Permitted if: 50 % of the width of the element diameter 10 mm Checks Total length one width of the element per m. Total length 2 width of the element per m. Split Not permitted Total length one width of the elem
38、ent per m. End shakes (going through the element) for end- matched elements Not permitted Total length 1/2 width of the element End shakes (going through the element) for non end- matched elements Total length 1/2 width of the element Total length one width of the element Bark pockets Not permitted
39、Slope of grain Permitted Colour variation Slight variation permitted Medullary ray Permitted All features permitted without limit to size or quantity if these do not impair the use Biological alteration (Fungal attack, insect damage) Not permitted Not permitted, except blue stain and black holes Non
40、-visible parts All features permitted without limit to size or quantity if these do not impair the use. In the case of class A sound sapwood is permitted from the back up to the upper part of the tongue (for elements with tongue) and up to 3mm for elements without tongue and groove. Information must
41、 be expressed in the marking to say what is outside use or indoor use a)See Clause 5.3.1. b) Not more than 5 % of the quantity of the consignment is allowed to be in the next lower grade. Pieces not achieving the requirements of the B grade must fulfil the principles of panelling and cladding end us
42、e. c) The classification for appearance does not take into account features which may impair the element when installed. d) The face compromises the whole visible surface of the strip when assembled. It therefore extends to the edges and in particular to the chamfers. e) Cat paws allowed EN 14951:20
43、06 (E) 9 5.3.2.2 Fraxinus excelsior (ash) Rules for ash are given in Table 2. Table 2 Classification for Fraxinus excelsior (ash) Face of the element Class Features b) c) d)A B Sound sapwooda Normally not distinguishable from heartwood Knots Sound and intergrown Unsound knots Permitted if: 20% of th
44、e width of the element diameter 2 mm Permitted if: 50% of the width of the element diameter 10 mm Checks Total length one width of the element per m. Total length 2 width of the element per m. Split Not permitted Total length one width of the element per m. End shakes (going through the element) for
45、 end- matched elements Not permitted Total length 1/2 width of the element End shakes (going through the element) for non end- matched elements Total length 1/2 width of the element Total length one width of the element Bark pockets Not permitted Slope of grain Permitted Colour variation Natural col
46、our variation accepted Stick marks Not permitted All features permitted without limit to size or quantity if these do not impair the use Biological alteration (Fungal attack, insect damage) Not permitted Not permitted, except blue stain and black holes Non-visible parts All features permitted withou
47、t limit to size or quantity if these do not impair the use a)See Clause 5.3.1. b) Not more than 5 % of the quantity of the consignment is allowed to be in the next lower grade. Pieces not achieving the requirements of the B grade must fulfil the principles of panelling and cladding end use. c) The c
48、lassification for appearance does not take into account features which may impair the element when installed. d) The face compromises the whole visible surface of the strip when assembled. It therefore extends to the edges and in particular to the chamfers. EN 14951:2006 (E) 10 5.3.2.3 Fagus sylvati
49、ca (beech) Rules for beech are given in Table 3. Table 3 Classification for Fagus sylvatica (beech) Face of the element Class Features e) c) d)A B Sound sapwoodb) Normally not distinguishable from heartwood Knots Sound and intergrown Unsound knots Permitted if: 20% of the width of the element diameter 2 mm Permitted if: 50% of the width of the element diameter 10 mm Checks Total length one width of the element per m. Total length 2 width of the element per m. Split Not permitted Total length one
