oSIST prEN 14732:2011

Timber structures - Prefabricated wall, floor and roof elements - Requirements

This European Standard specifies performance requirements at delivery for prefabricated structural (load-bearing) wall, floor and roof elements (diaphragm assemblies) consisting of framing members of timber and/or wood-based panels or boards on one or both sides, for use in service class 1 or 2 in accordance with EN 1995-1-1:2004. The panels and/or boards are connected to the joists by suitable adhesive bonding or by mechanical fixing. The cavities of the elements may be filled entirely or partially with insulating materials. The exterior faces of the elements may also be covered with insulation material.
This European Standard applies to elements with lengths and cross-sectional depths of up to 10 m and 0,30 m, respectively.
This European Standard specifies requirements for structural (3.3) and non-structural (3.4) components and lays down minimum requirements for the production of prefabricated elements.
The European Standard also covers methods to carry out the evaluation of conformity and marking of these elements.
This European Standard applies to elements that may have openings, e. g. for windows, doors etc. It does not apply to the properties of incorporated doors or windows.
Furthermore, it does not cover elements treated to enhance their fire performance.

Holzbauwerke - Vorgefertigte Wand-, Decken- und Dachelemente - Anforderungen

Diese Europäische Norm legt die Leistungsanforderungen bei Anlieferung vorgefertigter tragender Wand-, Decken- und Dachelemente fest, die aus Rahmenteilen aus Bauholz und/oder Holzwerkstoffplatten auf einer oder beiden Seiten bestehen und in Nutzungsklasse 1 oder Nutzungsklasse 2 nach EN 1995-1-1:2004 verwendet werden können. Die Platten sind mit den Balken durch geeignete Klebstoffe oder durch mechanische Befestigungsmittel verbunden. Die Hohlräume der Elemente können ganz oder teilweise mit Dämmstoffen gefüllt sein. Die Außenflächen der Elemente können ebenfalls mit Dämmstoff versehen sein. Diese Europäische Norm gilt für Elemente mit Längen und Querschnittensbreiten von bis zu 10 m bzw. 0,30 m. Diese Europäische Norm legt Anforderungen an tragende (3.3) und nicht tragende (3.4) Bauteile fest und beschreibt Mindestanforderungen an die Herstellung vorgefertigter Elemente. Diese Europäische Norm behandelt außerdem Verfahren zur Bewertung der Konformität und zur Kennzeichnung der Elemente. Diese Europäische Norm gilt für Elemente, die Öffnungen, z. B. für Fenster, Türen usw., aufweisen können. Sie gilt nicht für die Eigenschaften integrierter Türen oder Fenster. Darüber hinaus behandelt die Norm nicht Elemente, die zur Verbesserung ihres Brandverhaltens behandelt wurden.

Structures en bois - Eléments de mur, de plancher et de toiture préfabriqués - Exigences

La présente Norme européenne spécifie les exigences de performance à la livraison des éléments structuraux (porteurs) de mur, de plancher et de toiture préfabriqués (diaphragmes) constitués d'éléments d'ossature en bois et/ou de panneaux ou plaques à base de bois sur un côté ou des deux côtés, destinés à être utilisés en classe de service 1 ou 2 conformément à l'EN 1995-1-1:2004. Les panneaux et/ou plaques sont assemblés aux éléments de structure par collage à l'adhésif ou par fixation mécanique appropriés. Les cavités des éléments peuvent être entièrement ou partiellement remplies de matériaux isolants. Les faces extérieures des éléments peuvent également être revêtues d'un matériau isolant. La présente Norme européenne s'applique aux éléments dont la longueur et l’épaisseur totale sont respectivement inférieures ou égales à 10 m et 0,30 m. La présente Norme européenne spécifie les exigences relatives aux éléments structuraux (3.3) et non structuraux (3.4) et fixe les exigences minimales relatives à la production d'éléments préfabriqués. La présente Norme européenne couvre également les méthodes d'évaluation de la conformité et le marquage de ces éléments. La présente Norme européenne s'applique à des éléments pouvant comporter des ouvertures, par exemple pour des fenêtres, des portes, etc. Elle ne spécifie pas les exigences relatives aux portes et fenêtres elles-mêmes. De plus, elle ne couvre pas les éléments traités en vue d'améliorer leur comportement au feu.

Lesene konstrukcije - Montažni stenski, stropni in strešni elementi - 1. del: Zahteve

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Apr-2011
• ICS: 91.060.01 - Elements of buildings in general
• ICS: 91.080.20 - Timber structures
• Technical Committee: KON.005 - Timber structures
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 28-Oct-2013
• Due Date: 02-Nov-2013
• Completion Date: 28-Oct-2013
• Directive: 89/106/EEC - Construction products
• Mandate: M/112 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on structural timber products
• Ref Project: FprEN 14732 - Timber structures - Structural prefabricated wall, floor and roof elements - Requirements

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 14732:2011
01-marec-2011
Lesene konstrukcije - Montažne stene, stropni in strešni elementi - 1. del: Zahteve
Timber structures - Prefabricated wall, floor and roof elements - Requirements
Holzbauwerke - Vorgefertigte Wand-, Decken- und Dachelemente - Anforderungen
Structures en bois - Eléments de mur, de plancher et de toiture préfabriqués - Exigences
Ta slovenski standard je istoveten z: prEN 14732
ICS:
91.060.01 Stavbni elementi na splošno Elements of buildings in
general
91.080.20 Lesene konstrukcije Timber structures
oSIST prEN 14732:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 14732:2011

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oSIST prEN 14732:2011


EUROPEAN STANDARD
DRAFT
prEN 14732
NORME EUROPÉENNE

EUROPÄISCHE NORM

January 2011
ICS 91.060.01; 91.080.20
English Version
Timber structures - Prefabricated wall, floor and roof elements -
Requirements
Structures en bois - Eléments de mur, de plancher et de Holzbauwerke - Vorgefertigte Wand-, Decken- und
toiture préfabriqués - Exigences Dachelemente - Anforderungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 124.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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-CENELEC 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14732:2011: E
worldwide for CEN national Members.

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oSIST prEN 14732:2011
prEN 14732:2011 (E)
Contents Page
Foreword .2
1 Scope .6
2 Normative references .6
3 Terms and definitions .9
4 Symbols . 11
5 Requirements for components . 11
5.1 Framing members . 11
5.1.1 Structural timber . 11
5.1.2 Finger jointed timber . 11
5.1.3 Glued laminated timber . 12
5.1.4 Laminated veneer lumber (LVL) . 12
5.1.5 Structural, prefabricated beams and columns . 12
5.2 Panels and/or boards . 12
5.2.1 Wood-based panels . 12
5.2.2 Gypsum boards . 12
5.3 Adhesives . 12
5.3.1 General . 12
5.3.2 Phenolic, melamine or melamine-urea adhesives . 13
5.3.3 Moisture curing one component polyurethane adhesives . 13
5.4 Mechanical fasteners and connectors. 13
5.5 Thermal insulation materials and systems . 13
5.6 Vapour barriers . 13
6 Requirements for prefabricated elements . 13
6.1 General . 13
6.2 Mechanical resistance of the elements . 14
6.2.1 General . 14
6.2.2 Determination and declaration . 14
6.3 Bonding strength . 14
6.3.1 Bond line integrity and shear strength . 14
6.3.2 Strength of mechanical fixing . 15
6.4 Thermal insulation properties . 15
6.5 Vapour barrier properties . 15
6.6 Fire performance. 16
6.6.1 Reaction to fire . 16
6.6.2 Fire resistance . 16
6.7 Release of dangerous substances . 17
6.7.1 General . 17
6.7.2 Release of formaldehyde . 18
6.7.3 Pentachlorophenol content . 18
6.8 Durability . 18
6.8.1 General . 18
6.8.2 Structural timber, glued laminated timber, LVL and wood-based panels . 18
6.8.3 Steel parts . 18
6.9 Tolerances . 18
6.9.1 Elements and openings . 18
6.9.2 Spacing and edge distances of mechanical fasteners . 20
6.9.3 Bond line thicknesses . 20
6.10 Moisture content of element components . 20
7 Manufacturing requirements . 20
2

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oSIST prEN 14732:2011
prEN 14732:2011 (E)
7.1 Element construction . 20
7.2 Premises . 20
7.2.1 General . 20
7.2.2 Storage . 20
7.2.3 Additional requirements for production of adhesive bonded elements . 20
7.3 Equipment . 21
7.3.1 General . 21
7.3.2 Additional requirements for adhesively bonded elements . 21
7.4 Materials . 21
7.4.1 Moisture content of timber and glulam products . 21
7.4.2 Insulation products . 21
7.5 Production . 21
7.5.1 Tolerances of elements . 21
7.5.2 Assembly of framework and panels . 21
7.5.3 Assembling by bonding . 22
7.6 Element documents . 22
8 Evaluation of conformity . 22
8.1 General . 22
8.2 Initial type testing (ITT) . 22
8.3 Factory production control (FPC) . 24
8.3.1 General . 24
8.3.2 FPC requirements for all manufacturers . 24
8.3.3 Manufacturer-specific FPC system requirements . 24
9 Marking and labelling . 27
Annex A (normative) Bond line shear strength test for adhesively fixed joist-panel bonds . 28
A.1 General . 28
A.2 Glue line shear test . 28
A.2.1 Principle. 28
A.2.2 Testing machine . 28
A.3 Specimen preparation . 28
A.4 Procedure . 29
A.5 Results . 29
A.6 Test report . 29
Annex B (normative) Requirements for bonding and cramping . 32
B.1 Bonding requirements . 32
B.2 Cramping requirements . 32
Annex C (normative) Bond strength evaluation . 33
C.1 Calculation . 33
C.2 Control chart . 33
C.3 Conformity. 33
Annex D (normative) Additional requirements for gap filling adhesives and for one-component
polyurethane adhesives and relevant test methods . 34
D.1 General . 34
D.2 Additional tensile shear tests for glue line thicknesses up to 2 mm . 34
D.3 Additional long-term sustained load test under cyclic climate conditions with specimens
loaded perpendicular to the glue line for glue line thicknesses up to 2 mm . 34
D.4 Additional long-term sustained load test under cyclic climate conditions with specimens
loaded perpendicular to the glue line . 34
D.4.1 General description . 34
D.4.2 Preparation of the specimens . 35
D.4.3 Test procedure and climate conditions . 35
D.4.4 Requirements . 36
Annex E (normative) Reaction to fire performance - Classified without further testing (CWFT) . 37
E.1 General . 37
E.2 Structural timber, glulam, wood-based panels . 37
E.3 Gypsum plasterboards . 40
3

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oSIST prEN 14732:2011
prEN 14732:2011 (E)
E.3.1 Classification . 40
E.3.2 Mounting and fixing . 41
Annex F (normative) Treatment of mechanical resistance and fire resistance . 43
F.1 Initial type testing (ITT), including initial type calculation (ITC) . 43
F.1.1 Prefabricated element under attestation of conformity (AoC) system 1 . 43
F.1.2 Product under AoC system 2+ . 43
F.2 Factory production control (FPC) . 44
F.2.1 Product under AoC system 1 . 44
F.2.2 Product under AoC system 2+ . 44
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Directive . 46
ZA.1 Scope and relevant characteristics . 46
ZA.2 Procedure for attestation of conformity of prefabricated structural wall, floor and roof
elements . 49
ZA.2.1 Systems of attestation of conformity . 49
ZA.2.2 EC certificate of conformity and EC declaration of conformity . 53
ZA.3 CE marking and labelling . 54
Bibliography . 64
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oSIST prEN 14732:2011
prEN 14732:2011 (E)
Foreword
This document (prEN 14732:2011) has been prepared by Technical Committee CEN/TC 124 “Timber
structures”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive 89/106/EEC.
For relationship with EU Directive 89/106/EEC, see informative Annex ZA which is an integral part of this
document.

5

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oSIST prEN 14732:2011
prEN 14732:2011 (E)
1 Scope
This European Standard specifies performance requirements at delivery for prefabricated structural (load-
bearing) wall, floor and roof elements (diaphragm assemblies) consisting of framing members of timber and/or
wood-based panels or boards on one or both sides, for use in service class 1 or 2 in accordance with
EN 1995-1-1:2004. The panels and/or boards are connected to the joists by suitable adhesive bonding or by
mechanical fixing. The cavities of the elements may be filled entirely or partially with insulating materials. The
exterior faces of the elements may also be covered with insulation material.
This European Standard applies to elements with lengths and cross-sectional depths of up to 10 m and
0,30 m, respectively.
This European Standard specifies requirements for structural (3.3) and non-structural (3.4) components and
lays down minimum requirements for the production of prefabricated elements.
The European Standard also covers methods to carry out the evaluation of conformity and marking of these
elements.
This European Standard applies to elements that may have openings, e. g. for windows, doors etc. It does not
apply to the properties of incorporated doors or windows.
Furthermore, it does not cover elements treated to enhance their fire performance.
2 Normative references
The following referenced documents are indispensable for the 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 300, Oriented strand boards (OSB) — Definitions, classification and specifications
EN 301, Adhesives, phenolic and aminoplastic, for load-bearing structures — Classification and performance
requirements
EN 302-1, Adhesives for load-bearing timber structures — Test methods — Part 1: Determination of bond
strength in longitudinal tensile shear strength
EN 302-2, Adhesives for load-bearing timber structures — Test methods — Part 2: Determination of
resistance to delamination
EN 302-3, Adhesives for load-bearing timber structures — Test methods — Part 3: Determination of the effect
of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength
EN 302-4, Adhesives for load-bearing timber structures — Test methods — Part 4: Determination of the
effects of wood shrinkage on the shear strength
EN 302-6, Adhesives for load-bearing timber structures — Test methods — Part 6: Determination of the
conventional pressing time
EN 312, Particleboards — Specifications
EN 335-1, Durability of wood and wood-based products — Definition of use classes — Part 1: General
EN 335-2, Durability of wood and wood-based products — Definition of use classes — Part 2: Application to
solid wood
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oSIST prEN 14732:2011
prEN 14732:2011 (E)
EN 335-3, Durability of wood and wood-based products — Definition of use classes — Part 3: Application to
wood-based panels
EN 336, Structural timber — Sizes, permitted deviations
EN 350-1, Durability of wood and wood-based products — Natural durability of solid wood — Part 1: Guide to
the principles of testing and classification of the natural durability of wood
EN 350-2, Durability of wood and wood-based products — Natural durability of solid wood — Part 2: Guide to
natural durability and treatability of selected wood species of importance in Europe
EN 351-1, Durability of wood and wood-based products — Preservative-treated solid wood — Part 1:
Classification of preservative penetration and retention
EN 386, Glued laminated timber — Performance requirements and minimum production requirements
EN 408, Timber structures — Structural timber and glued laminated timber — Determination of some physical
and mechanical properties
EN 460-1, Durability of wood and wood-based products — Preservative-treated solid wood — Part 1:
Classification of preservative penetration and retention
EN 520, Gypsum plasterboards — Definitions, requirements and test methods
EN 594, Timber structures — Test methods — Racking strength and stiffness of timber frame wall panels
EN 596, Timber structures — Test methods — Soft body impact test of timber framed walls
EN 622-2, Fibreboards — Specifications — Part 2: Requirements for hardboards
EN 622-3, Fibreboards — Specifications — Part 3: Requirements for medium boards
EN 622-4, Fibreboards — Specifications — Part 4: Requirements for softboards
EN 622-5, Fibreboards — Specifications — Part 5: Requirements for dry process boards (MDF)
EN 634-1, Cement-bonded particleboards — Specifications — Part 1: General requirements
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 717-1, Wood-based panels — Determination of formaldehyde release — Part 1: Formaldehyde emission
by the chamber method
EN 1195, Timber structures — Test methods — Performance of structural floor decking
EN 1365-1, Fire resistance tests for loadbearing elements — Part 1: Walls
EN 1365-2, Fire resistance tests for loadbearing elements — Part 2: Floors and roofs
EN 1931, Flexible sheets for waterproofing — Bitumen, plastic and rubber sheets for roof waterproofing —
Determination of water vapour transmission properties
EN 1990, Eurocode: Basis of structural design
EN 1995-1-1:2004, Eurocode 5: Design of timber structures — Part 1-1: General rules and rules for buildings
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oSIST prEN 14732:2011
prEN 14732:2011 (E)
EN 1995-1-2, Eurocode 5: Design of timber structures — Part 1-2: General rules — Structural fire design
EN 12524, Building materials and products — Hygrothermal properties — Tabulated design values
EN 12871, Wood-based panels — Performance specifications and requirements for load bearing boards for
use in floors, walls and roofs
EN 12939, Thermal performance of building materials and products — Determination of thermal resistance by
means of guarded hot plate and heat flow meter methods — Thick products of high and medium thermal
resistance
EN 13162, Thermal insulation products for buildings — Factory made mineral wool (MW) products —
Specification
EN 13163, Thermal insulation products for buildings — Factory made products of expanded polystyrene foam
(EPS) — Specification
EN 13164, Thermal insulation products for buildings — Factory made products of extruded polystyrene foam
(XPS) — Specification
EN 13165, Thermal insulation products for buildings — Factory made products of rigid polyurethane foam
(PUR) — Specification
EN 13166, Thermal insulation products for buildings — Factory made products from phenolic foam (PF) —
Specification
EN 13167, Thermal insulation products for buildings — Factory made cellular glass products (CG) —
Specification
EN 13168, Thermal insulation products for buildings — Factory made wood wool products (WW) —
Specification
EN 13169, Thermal insulation products for buildings — Factory made products of expanded perlite (EPB) —
Specification
EN 13170, Thermal insulation products for buildings — Factory made products of cork (ICB) — Specification
EN 13171, Thermal insulation products for buildings — Factory made wood fibre products (WF) —
Specification
EN 13183-2, Moisture content of a piece of sawn timber — Part 2: Estimation by electrical resistance method
EN 13353, Solid wood panels (SWP) — Requirements
EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using
test data from reaction to fire tests
EN 13501-2, Fire classification of construction products and building elements — Part 2: Classification using
data from fire resistance tests, excluding ventilation services
EN 13823, Reaction to fire tests for building products —
...