NTERNATONAL STANDARD 3399 NTERNATONAL ~RGA! JQATON FQS STANDARDZATCN.Mf:X~b H,PPO;HA~ OPr4HM3AUM5i l-l0 CTAHLAPTM3AUMM~ORGANSATON NTERNATONALE DE NORMALSATON Dit document mag slechts op een stand-alone PC worden geinstalleerd. Gebruik op een netwerk is alleen. toestaan als een aanvullende licentieovereenkomst voor netwerkgebruik met NEN is afgesloten. This document may only be used on a stand-alone PC. Use in a network is only permitted when a supplementary license agreement for us in a network with NEN has been concluded. Broadleaved wood raw parquet blocks - Classification of beech parquet blocks Frises brutes en bois feuillus pour parquets - Classement des frises de hetre First edition - 1976-04-01 UDC 69.025.351.3 : 674.031.12.001.3 Ref.No. SO 3399-1976 (E) Descriptors : construction materials, wood products, floor coverings, wood floors, parquet Strips, beech wood, classifications. Price based on 3 pages
FOREWORD SO (the nternational Organization for Standardization) is a worldwide federation of national Standards institutes (SO Member Bodies). The work of developing nternational Standards is carried out through SO Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be represented on that Committee. nternational organizations, governmental and non-governmental, in iaison with SO, also take part in the work. Draft nternational Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as nternational Standards by the SO Council. nternational Standard 60 3399 was drawn up by Technical Committee SO/TC 99, Semi-manufactures of timber, and circulated to the Member Bodies in May 1974. lt has been approved by the Member Bodies of the following countries : Austria taly Bulgaria Netherlands France Norway Germany Poland Hungary Roman ia reland South Africa, Rep. of Spain Thailand Turkey Yugoslavia The Member Bodies of the following document on technical grounds : countries expressed disapproval of the Czechoslovakia U.S.S.R. 0 nternational Organkation for Standardkation, 1976 l Printed in Switzerland
NTERNATONAL STANDARD SO 3399-1976 (E) Broadleaved wood raw parquet blocks - Classification beech parquet blocks of 1 SCOPE AND FELD OF APPLCATON This nternational Standard establishes the classification, by quality, of beech raw parquet blocks used for manufacturing the Strips for different types of wood parquets. 2 REFERENCE SO 3397, Broadleaved wood raw parquet blocks - General charac teris tics. 3 MANUFACTURE, CHARACTERSTCS, DELVERY CONDTONS 3.1 The regulations for the manufacture, the characteristics and the delivery conditions are fixed by SO 3397. 3.2 Unless otherwise requested, the wood shall be steamed before delivery. 4 CLASSFCATON 4.1 Raw parquet blocks shall not contain more defects than those allowed in 4.4, for each grade. 4.2 Raw parquet blocks are divided into two grades : 4.3 Raw parquet blocks containing more defects than those allowed for the last grade (11) shall not be delivered under the designation SO beech raw parquet blocks, nor under any other designation which may lead to confusion with one of the grades given. 4.4 The two grades shall correspond to the conditions stated in tables 1, 2 and 3. 5 TYPE OF PARQUET BLOCKS SAWNG The type of sawing (quarter, half-quarter, slab) of the parquet blocks of the above grades may be the subject of special agreements in the orders.
SO 3399-1976 (E) TABLE 1 - General characteristics L Grades Wood or sawing defects. Doat and decay Straightness of grain appreciably straight grain and parallel to the axis of the piece slope of grain not exceeding 10 % 1 Texture regu lar all textures permitted Bow permitted only in one plane, if the deflection does not exceed 1 % of the length of the piece, 4 Spring permitted if the deflection does not exceed 0,5 % of the length of the piece Twist r 1 Saw marks permitted up to a depth of 0,5 mm TABLE 2 - Face Wood defects Grades Medullary sheath (Sound heart) Redheartwood Sound permitted Colouring very slight differentes of colouring permitted, veins of deep colour excluded slight differentes of colouring permitted in the form of veins and stacking spots if the wood is Sound Shakes shallow Checks and permitted, not exceeding in depth 1 mm 2mm through permitted on ends, not exceeding in length the increment given for the length of the piece nbark and frost Cracks 1 very small permitted in unlimited number provided that their diameter does not exceed : - 2 mm for Sound knots - 1 mm for black knots
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