EN 14279:2004+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Slojnat furnirni les (LVL) - Definicije, klasifikacija in specifikacijeFurnierschichtholz (LVL) - Definitionen, Klassifizierung und SpezifikationenLamibois (LVL) - Définitions, classification et spécificationsLaminated Veneer Lumber (LVL) - Definitions, classification and specifications79.060.99Other wood-based panelsICS:Ta slovenski standard je istoveten z:EN 14279:2004+A1:2009SIST EN 14279:2005+A1:2009en,fr,de01-julij-2009SIST EN 14279:2005+A1:2009SLOVENSKI
STANDARDSIST EN 14279:2005/kprA1:2008SIST EN 14279:20051DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14279:2004+A1
March 2009 ICS 79.080; 79.060.20 Supersedes EN 14279:2004English Version
Laminated Veneer Lumber (LVL) - Definitions, classification and specifications
Lamibois (LVL) - Définitions, classification et spécifications Furnierschichtholz (LVL) - Definitionen, Klassifizierung und Spezifikationen This European Standard was approved by CEN on 14 October 2004 and includes Amendment 1 approved by CEN on 3 February 2009.
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 alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
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B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14279:2004+A1:2009: ESIST EN 14279:2005+A1:2009

Evaluation of the bonding quality of laminated veneer lumber . 12 Annex B (informative)
Supplementary properties . 23 Bibliography . 24
EN 14374 and EN 14279 (this document), prepared under Mandates M/112 and M/113 respectively. In the field of application of Mandate M/112 "Structural timber products and ancillaries", LVL is a material used for manufacturing structural products. In the field of application of Mandate M/113 "Wood-based panels", LVL is a product. The fields of application are to some extent overlapping. In some cases, the standard to be used is specified in the design standards, in other cases it is up to the user to specify the standard to be used. For relationship with Council Directive 89/106/EEC, EN 14374:2004 has its own Annex ZA. EN 14279 applies to LVL products for general purposes as well as to LVL products for use in construction, for relationship with Council Directive 89/106/EEC, refer to Annex ZA of EN 13986:2004. This document has been prepared in concert with CEN/TC 124. Consequently, some parts are common with EN 14374, e.g. some definitions and general specifications. SIST EN 14279:2005+A1:2009

Tolerances on dimensions — Thickness (sanded) within and between LVLs — Thickness (unsanded) within and between LVLs — Length and width
EN 324-1
EN 315 2a Edge straightness tolerance
EN 324-2 ≤ 1,5 mm/m 3a Squareness tolerance
EN 324-2 ≤ 2,0 mm/m 4
Moisture content
EN 322 6 % to 12 % 5
Tolerance on the mean density within a LVL
EN 323 ± 10 % 6
Bending strength — major axis — minor axis
EN 310
5th percentile Value determined at the initial testing of the product with regard to actual lay-up, density, veneer thickness and veneer grades 7
Modulus of elasticity in bending — major axis — minor axis
EN 310
Bonding quality
EN 314-1 In connection
with Annex A Shear strength and wood fibre failure in accordance with EN 314-2 9
Veneer grade — Hardwood
— Softwood
EN 635-5
EN 635-2 appearance class EN 635-3 appearance class a Certain uses of LVL can require other tolerances: see separate performance standards. SIST EN 14279:2005+A1:2009

Test method EN 717-1 Requirement Release ≤ 0,124 mg/m3 air Factory production control Test method EN 717-2 Requirement Release ≤ 3,5 mg/m2 h or ≤ 5 mg/m2 h within 3 days after production a For established products, initial testing may also be done on the basis of existing data with EN 717-2 testing, either from factory production control or from external inspection.
Table 3 — Definition of formaldehyde class E2 Initial type testing either Test method EN 717-1 Requirement Release > 0,124 mg/m3 air or Test method EN 717-2 Requirement Release > 3,5 mg/m2 h to ≤ 8 mg/m2 h or > 5 mg/m2 h to ≤ 12 mg/m2 h within 3 days after production Factory production control Test method EN 717-2 Requirement Release > 3,5 mg/m2 h to ≤ 8 mg/m2 h or > 5 mg/m2 h to ≤ 12 mg/m2h within 3 days after production
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