EN 12871:2010

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Holzwerkstoffe - Leistungsspezifikationen und Anforderungen für tragende Platten zur Verwendung in Fußböden, Wänden und DeckenPanneaux à base de bois - Spécifications et exigences fonctionnelles pour panneaux travaillants utilisés en planchers, murs et toituresWood-based panels - Performance specifications and requirements for load bearing boards for use in floors, walls and roofs79.060.01Wood-based panels in generalICS:Ta slovenski standard je istoveten z:EN 12871:2010SIST EN 12871:2010en,fr,de01-julij-2010SIST EN 12871:2010SLOVENSKI
STANDARDSIST EN 12871:20041DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12871
March 2010 ICS 79.060.01 Supersedes EN 12871:2001English Version
Wood-based panels - Performance specifications and requirements for load bearing boards for use in floors, walls and roofs
Panneaux à base de bois - Spécifications et exigences fonctionnelles pour panneaux travaillants utilisés en planchers, murs et toitures
Holzwerkstoffe - Leistungsspezifikationen und Anforderungen für tragende Platten zur Verwendung in Fußböden, Wänden und Dächern This European Standard was approved by CEN on 30 January 2010.
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.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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, Sweden, Switzerland and United Kingdom.
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Wood-based panels structural roof decking on joist . 29A.1Scope . 29A.2Modification to EN 1195 . 29Annex B (informative)
Examples . 30B.1General . 30B.2Features of the end use . 30B.2.1Decking for flooring in housing applications . 30B.2.2Decking for an accessible cold roof (load category I) . 30B.3Type testing values of the component . 30B.3.1Main features of the testing (according to EN 1195) . 30B.3.2Results . 30B.4Values for the calculation parameters . 31B.5Determination of the Limit States of the component . 32B.5.1Ultimate Limit State . 32B.5.2Serviceability Limit State (according to EN 1995-1-1 and the recommendations of EN 12871) . 32B.6Compliance to requirements . 33B.6.1Flooring application in SC1 . 33B.6.2Cold roof application (load category I in SC2) . 33Bibliography . 36 SIST EN 12871:2010

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, 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, Sweden, Switzerland and the United Kingdom. SIST EN 12871:2010

However, these standards provide no evaluation for concentrated loads or impact loads. Non-standard calculation methods for these properties may not lead to an optimised design in terms of performance.
The second approach is to design the structure by type testing in order to satisfy the requirements for both impact and concentrated loading. This approach yields an optimised design since the results from the testing apply only to that one specific design.
This standard relates specifically to the second approach, namely, design by type testing. Thus, this standard sets out the specifications and requirements for structural floor or roof decking or wall sheathing using
wood-based panels. SIST EN 12871:2010

EN 1991-1-1, Eurocode 1: Actions on structures — Part 1-1: General actions – Densities, self-weight, imposed loads for buildings EN 1991-1-3, Eurocode 1 — Actions on structures — Part 1-3: General actions – Snow loads EN 1995-1-1, Eurocode 5: Design of timber structures — Part 1-1: General – Common rules and rules for buildings EN 12369-1, Wood-based panels — Characteristic values for structural design — Part 1: OSB, particleboards and fibreboards
EN 12369-2, Wood-based panels — Characteristic values for structural design — Part 2: Plywood
EN 12369-3, Wood-based panels — Characteristic values for structural design — Part 3: Solid-wood panels
EN 13446, Wood-based panels - Determination of withdrawal capacity of fasteners EN 14358, Timber structures — Calculation of characteristic 5-percentile values and acceptance criteria for a sample 2.2 Product standards EN 300, Oriented Strand Boards (OSB) — Definitions, classification and specifications EN 312, Particleboards — Specifications
EN 622-2, Fibreboards — Specifications — Part 2: Requirements for hardboards EN 622-3, Fibreboards — Specifications — Part 3: Requirements for medium boards EN 622-5, Fibreboards — Specifications — Part 5: Requirements for dry process boards (MDF) EN 634-2, Cement-bonded particleboards — Specifications — Part 2: Requirements for OPC bonded particleboards for use in dry, humid and external conditions EN 636, Plywood — Specifications EN 13353, Solid wood panels (SWP) — Requirements SIST EN 12871:2010

Modification factor defined by EN 1995-1-1 ku Conversion factor between Newtons and kilonewtons
n Number of specimens in a test sample qd Design (imposed) uniformly distributed load, in kilonewtons per square metre rL Coefficient of expansion of the panel in its plane, derived from EN 318, in 1/1 000 %
s Conventional snow-load per horizontal unit of area, specified in National Annexes to EN 1991-1-3 or, where not available, in EN 1991-1-3, in kilonewtons per square metre t Thickness of the panels, in mm SIST EN 12871:2010

to wall height by an X factor, specified in national regulations ( wrH = H/X), in millimetres w Deflection, as defined in EN 1195 for concentrated loading, in millimetres wrL Deflection w related to the span by an X factor, specified in national regulations or as recommended in this standard ( wrL = L/X), in millimetres γm Material partial factor according to 5.4.3 defined by National Annexes to EN 1995-1-1 or, where not available, by EN 1995-1-1 γq Action partial factor according to 5.4.2 defined by National Annexes to EN 1990 or, where not available, by EN 1990 ψ2 Factor for the quasi-permanent value of actions, defined by National Annexes to EN 1990 or, where not available, by EN 1990 3.2 Subscripts 1, 2, 3 Service class 1, 2 or 3 in accordance with EN 1995-1-1 d Design (value) instal refer to installation period
k Characteristic (in this standard, 5th percentile for test values) mean Mean value
p Panel Rd Racking SLS and ser related to Serviceability Limit State ULS Related to Ultimate Limit State max Maximum (related to Ultimate Limit State) . Roof slope (angle to the horizontal plane) 4 Terms and definitions For the purposes of this document, the following terms and definitions apply.
4.1 service class NOTE Service classes 1, 2 and 3 are defined in EN 1995-1-1. 4.2 serviceability limit state SLS NOTE SLS is defined in EN 1990. SIST EN 12871:2010

NOTE The load values are defined in the National Annexes to EN 1991-1-1 or, where not available, in EN 1991-1-1. 4.6 structural wall-sheathing vertical (or quasi-vertical) assembly of wood-based panels, supported by studs, capable of taking up loading in the 3 directions of space 4.7 structural floor-decking horizontal (or quasi-horizontal) assembly of wood-based panels fixed to supporting joists and spanning over them NOTE When a load is applied on the decking, it is free to deflect between the joists. 4.8 sub-floor structural panel meant to be covered by overlays
4.9 structural roof-decking usually, a sloping assembly of wood based panels, fixed to supporting joists and spanning over them NOTE When a load is applied on the decking, it is free to deflect between the joists. 4.10 warm roof roof design in which the panels supported by the joists are placed below the insulation NOTE Usually, the panels are considered to be under conditions corresponding to service class 1.
4.11 cold roof roof design in which the panels and some of the supporting joists are placed above the insulation NOTE Usually, the panels are considered to be under conditions corresponding to service class 2.
4.12 set irreversible deformation (unevenness between two adjoining panels) of the test floor, wall or roof after the removal of the applied load SIST EN 12871:2010

deflection derived according to the ratio of length L upon a factor X NOTE Usually, factor X is specified in standards or in national regulations. 4.14 deflection relative to height vrH deflection derived according to the ratio of height H upon a factor X NOTE Usually, factor X is specified in standards or in national regulations. 4.15 racking stiffness ratio of shear load upon associated displacement at the top of the wall, in the elastic phase of the deformation 4.16 racking resistance load carrying capacity of a component to resist to a shear load 4.17 punching shear strength stress in the section of a panel under a concentrated load applied perpendicularly to its face by means of a loading head with a specified cross section 5 General requirements 5.1 General 5.1.1 Panels intended for load-bearing application Table 1 specifies the wood-based panel types for load bearing purposes in floor-decking, roof-decking and wall sheathing. SIST EN 12871:2010

LVL-1/2/3 EN 14279 EN 14374 Fibreboard HB-LA/LA1/LA2 MB-L/H, MB-H/HH MDF-LA/HLS EN 622-2 EN 622-3 EN 622-5 Cement bonded particle board a
— EN 634-2 a To be used only if are determined : - the bending properties according to EN 789 and EN 1058,
- the creep properties according to ENV 1156 for kmod and kdef
5.1.2 Relevant factors in load applications Table 2 sets out the parameters related to the definition of the test set-up and the relevant test methods for structural uses. SIST EN 12871:2010

Properties Span (joist spacing) for floors EN 1195
Concentrated load
Soft body impact Span (stud spacing) depth, width, for walls EN 594 or
EN 1995-1-1 EN 596 Racking properties
Pendular soft body impact Span (joist spacing) for roofs EN 1195
Concentrated load
Soft body impact Panel dimensions EN 324-1 See 6.4.1 and 6.4.2 Thickness, length and width Tolerances Joints – the method of supporting the panel edges
EN 324-1/ EN 324-2
Actual clearance
– type of panel to panel joints (e.g. tongued and grooved, square edged with noggins) EN 324-1 Actual tolerances
– type and spacing of fasteners (e.g. nailed, screwed and spacing)
EN 13446 EN 1383
Withdrawal and pull through resistance in panels Load-bearing nailed and stapled joints – type of glue for panel installation, if relevant EN 301 EN 204 Determined from the performance test Conditioning before installation – moisture content a
EN 322 Creep behaviour to be related to service class in accordance with EN 1995-1-1 – dimensional changes of the panel due to change in moisture content EN 318 Related to service class and determining joint design a Testing to be carried out in standard climate, i.e. nominally: 20 °C and 65 % relative humidity.
5.2 Durability For all load-bearing applications within the scope of this standard, the resistance of the bonding to moisture and the biological durability shall be specified in accordance with Table 7 in EN 13986:2004, taking into account the service classes and the use classes respectively. 5.3 Mechanical properties 5.3.1 General Test methods relevant to this standard are set out in Table 3. SIST EN 12871:2010

EN 789
EN 12369-1, -2, -3 Sampling for and determination of characteristic values Tests for determination of characteristic values Tabled values for structural use a Applicable only if the panel transmits racking loads. Concentrated load Floor decking EN 1195
Specified by the performance test Determination of concentrated load and related deflection. Load category and field of application Wall sheathing EN 594 Specified by the performance test Determination of racking load and related deflection. Load category and field of application Roof decking EN 1195 Specified by the performance test Determination of concentrated load and related deflection. Load category and field of application Requirements See 6.2 See 6.3 Floor and roof decking Wall sheathing Sampling See Clause 7 Sampling for and determination of characteristic values Soft body impact test
Relevant EN Explanation Floor decking EN 1195 Specified by the performance test Wall sheathing EN 596 Specified by the performance test Roof decking EN 1195 Specified by the performance test Requirements See 6.2.4 See 6.3.4 Floor and roof decking Wall sheathing Sampling See Clause 7 Sampling for and determination of characteristic values
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