Nb Cpd Sg18!07!052 Glulam

NB-CPD/SG18/07/052 Page 1 of 22

GNB-CPD

SG18 Guidance from the Group of Notified Bodies

for the Construction Products Directive

89/106/EEC

NB-CPD/SG18/07/052 Issued: 2 November 2007

APPROVED GUIDANCE

GNB-CPD position paper from SG18 - EN 14080:2005 Certification of glued laminated timber

General scope, limitations and aim of this guidance for Notified Bodies (NBs)

This position paper contains guidance for Notified Bodies (NBs) involved in the attestation of conformity of glued laminated timber according to EN 14080:2005. The purpose is to help NBs work equivalently and come to common judgments. This guidance contains informative material (which NBs should or may follow) and normative guidance (which NBs shall follow or at least work equivalently to as circumstances demand).

This guidance is thought necessary to provide clarity and completeness for NBs so that they can work equivalently. It supplements and makes practical for NBs the harmonized standard EN 14080:2005, approved AG guidance, and Standing Committee guidance in the form of GPs, which also apply - unless otherwise explicitly stated in this guidance. This position paper should not contradict nor extend the scope of the work and role of a NB, nor impose additional burdens on the manufacturer, beyond those laid down in the CPD and EN 14080:2005.

This guidance should be considered valid until the relevant standards are amended to include the guidance (as thought fit by the CEN/TC); or until guidance from Commission, SCC, and AG has changed on relevant matters. Whereupon, the paper should be considered for withdrawal/revision and be replaced by new guidance as necessary.

This position paper was considered approved by SG18 on 30 May 2007 and by Advisory Group (AG) on 26 July 2007.


Contents

1 Foreword.................................................................................................................................3 2 Certification Process................................................................................................................3 3 Initial Type Testing and/or Assessment....................................................................................6

3.1 Glue bond quality.............................................................................................................6 3.2 Reaction to fire.................................................................................................................6

4 Factory Production Control ......................................................................................................7 4.1 Factory Production Control Manual..................................................................................7 4.2 Implementation of the Factory Production Control Manual................................................7

5 Initial Inspection of Factory and Factory Production Control.....................................................8 5.1 Initial Inspection of Initial Type Testing and/or Assessment ..............................................8 5.2 Initial Inspection of Factory Production Control.................................................................8 5.3 Initial Inspection of Testing of Samples according to a Prescribed Test Plan....................8

6 EC Certificate of Conformity.....................................................................................................8 7 Continuous Surveillance of Factory Production Control............................................................9 Annex A Checklist for assessment of ITT.................................................................................11 Annex B Checklist follow up .....................................................................................................13 Annex C Checklist FPC manual................................................................................................14 Annex D Checklist Manufacture of Glulam................................................................................15 Annex E Checklist Finger jointing of lamellae...........................................................................16 Annex F Checklist EN 408 Finger joint bending tests................................................................17 Annex G Checklist EN 387 Large finger joint.............................................................................18 Annex H Checklist EN 391 Delamination tests..........................................................................19 Annex I Checklist EN 392 Shear tests.....................................................................................20 Annex J Examples of EC documents.......................................................................................21 Annex K EN standards applying to glued laminated timber to EN 14080...................................22


1 Foreword

The aim of this position paper is to give guidance to notified bodies in working equivalently towards issuing an EC Certificate of Conformity to Annex ZA of EN 14080.

This position paper was prepared by Sector Group 18 of the Group of Notified Bodies under the CPD. It shows the tasks of the notified bodies in the field of the construction products directive given in mandate M/112 and Annex ZA of EN 14080. These comprise a system of initial type testing and the factory production control that gives the presumption that products placed on the market are in conformity with the technical specifications given in Annex ZA of EN 14080. Compliance with EN 14080 requires, by reference, compliance with EN 385, EN 386, EN 387, EN 1194 and EN 14081-1.

Errors found in EN 14080:

EN 14080 4.5.2 paragraph 2 only refers to the characteristic bending strength in accordance with Annex A, but bonding strength may alternatively be tested in tension. The word "bending" in paragraph two should be ignored.

Other comments to EN 14080 regarding its practical use:

-Definition. EN 14080 (EN 386) covers all structural glued laminated members manufactured by bonding together at least two timber laminations of finished lamination thickness not more than 45 mm, with their grain direction running essential parallel.

-Grading. If the Glulam producer grades the timber for the lamellae he shall additionally comply with EN 14081-1. There is a chain of reference from EN 14080 through EN 1194 to EN 338, which refers to EN 14081-1 for the grading method.

This means that the production process and FPC shall comply with the requirements given in EN 14081-1, and the certification procedure for EN 14080 shall include the relevant parts of EN 14081-1. However, the producer need not be certified to EN 14081-1 if he does not place the graded lamellae on the market.,

-GL classes. If EN 1194 6.2 is used to determine the GL strength class, based on full scale bending tests of beams, the grading criteria (visual according to EN 14081-1 Annex A or machine settings) of the lamellae shall furthermore be established as an ITT parameter. This applies also for non GL strength classes where a special strength profile is declared.

-If the glue laminated timber producer carries out biological treatment he shall additionally comply with prEN 15228

This means that the production process and FPC shall comply with the requirements given in prEN 15228 and the certification procedure for EN 14080 shall take into account the relevant parts of prEN 15228. However, the producer need not be certified to prEN 15228 if he does not place the treated lamellae on the market.

-The wording approved laboratory in EN 14080 shall be read as notified test laboratory.

2 Certification Process

The attestation of conformity (AoC) is system 1. A summary of the procedure and the party responsible for the different tasks are given in Table 1.


Table 1 - Summary of AoC 1 procedure

Task Responsible party

Clarification

Initial type testing and/or assessment, ITT

Manufacturer The manufacturer shall carry out and document

the ITT of the Glued laminated timber as follows:

Strength profile or GL class to EN 14080 from one of the three

methods of clause 4.2 Bending strength, compressive strength,

tensile strength, shear strength and modulus of elasticity.

Adhesive

EN 301 test report and relation to end use service class.

Guidance for use in production document.

Durability Use class (Service Class).

Preservative treatment

Biocide Directive 98/8/EC approval, if needed.

Documentation on influence on strength and stiffness (modification factors), if any

acc. prEN 15228. Change in equilibrium moisture content, if

any.

Reaction to fire If declared according to EN 14080,

Annex E.

Formaldehyde emission If tested or declared according to

EN 14080, Annex B. Note 2 and 3.



Clarification

Initial type testing

ITT

Notified body

Bonding strength of the laminate end joints

The notified test laboratory.

Bonding strength of glue lines

The notified test laboratory.

Bonding strength of large finger joints The notified test laboratory.

Reaction to fire The notified fire test laboratory

shall carry out and document the ITT, in case of Euroclass characteristics for reaction to fire, if not declared according to EN 14080,

Annex E.

Assessment The notified body is responsible for

assembling all of the ITT information, verifying that tasks have been carried out

according to the technical specification and assessing and certifying the conformity of the

product.

This evaluation can be given in an ITT evaluation report, following Guidance Paper

K 6.2.

Factory production control, FPC manual

Manufacturer The manufacturer shall establish, document and maintain

the FPC-system as well as implement and review it.

Factory production control, FPC Testing of samples

according to a prescribed test plan

Manufacturer The manufacturer shall in the FPC-system include the sampling plan for the raw material (E.g. the grading of structural

timber), finger jointed lamellae and bonding of the finished product, taken at

the factory to be tested by himself.

Initial inspection of factory and FPC

Notified body (Certification)

The notified body shall inspect and assess the factory and the tasks above

and document the results. (Initial audit report.)

EC-Certificate of conformity Notified body (Certification)

When the assessment of the initial inspection of factory and FPC is

satisfactory the notified body shall issue the EC-Certificate of conformity.



Clarification

Declaration of conformity Manufacturer (Certification)

After the certificate is issued the manufacturer shall declare the

conformity of his product according to the result of the ITT.

CE marking Manufacturer After the declaration of conformity is prepared the manufacturer can affix the

CE marking but only on products that fulfil the declared characteristics.

Continuous surveillance Notified body The notified body shall at least twice a year

inspect and assess the Product and the FPC and

document the results. Based on the assessment the certificate

of the product shall be maintained or withdrawn.

3 Initial Type Testing and/or Assessment

The manufacturer and the notified test laboratory shall carry out and document the initial type testing and/or assessment according to EN 14080 Annex ZA clause Z.2.1 and clause 5.2 Table 1. The tasks of the notified certification body are to attest conformity of the initial type testing and to assess the documentation of the declared characteristics, to attest conformity.

The initial type tests assigned to the NB are as follows:

3.1 Glue bond quality

For the glue bond quality:

Bonding strength of end joints. Tests according to EN 408 in relation to combination of finger joint production line/ adhesive/wood species.

Glue lines. Tests according to either EN 391 (Service Class 1, 2 and 3) or EN 392 (Service Class 1 and 2) for each combination of warm/cold pressing line / adhesive / wood species.

Bonding strength of EN 387 large finger joints. The finger joint shall be tested in straight beams according to EN 408.

3.2 Reaction to fire

For reaction to fire of all glulam for which the minimum mean density is at least 380 kg/m and the minimum thickness is at least 40 mm, the reaction to fire class "D-s2,d0" can be declared without testing. For glulam that does not fulfil these two requirements, or if the manufacturer wishes to declare better values, the testing and assessment shall be carried out in accordance with EN 13501-1.


4 Factory Production Control

4.1 Factory Production Control Manual

The NB shall assure itself that the manufacturer has established and documented and maintains a factory production control system in an FPC manual to ensure that the products conform to the declared characteristics. All declared characteristics shall be covered either by regular testing of the finished product and/or control of the raw materials, equipment and production process.

NOTE An FPC manual which complies with ISO 9000 is recognised as satisfying the FPC requirements only if it addresses all requirements of EN 14080.

Each of the standards EN 385: 2001 for finger jointed structural timber, EN 386:2001 for traditional production of glued laminated timber and EN 387:2001 for large finger joints in glued laminated timber includes an FPC scheme in its clause 7.

These schemes will need to be supplemented to take into consideration any special production methods, conditions, materials or functional requirements. For example EN 14081-1, Strength graded structural timber, prEN 15228 biological treated timber.

An FPC manual can have the following content based on Commission Guidance Papers B and D:

Section Contents Guidance paper B Guidance paper D

1 Introduction -

2 Quality objectives -

3 Organisation and responsibility 3.1.1, 3.1.1a, b, c 4 Production site - 5 Personnel 3.2.1 6 Quality control system 3.1.1, 3.1.2, 3.1.2a, 3.2.3 7 Document management 3.1.1, 3.1.2

8 Raw materials, purchase and contract work 3.1.3a, 3.3 9 Process management 3.1.3b 10 Control, assessment of results and status of test 3.1.2c,d , 3.1.3b,c, 3.2.2,

3.2.3, 3.2.4, 3.2.5 11 Management of control results 3.1.2c, 3.2.3, 3.2.5 12 Non-conformity products 3.1.2d, 3.2.3, 3.2.4, 3.2.5 13 Marking, documents of conformity, delivery

documents and traceability 3.2.2., 3.3 2, 3, 5, 2(11), 5(7)

14 Handling, storage etc. 3.1.3c 15 Corrective actions 3.1.2d, 3.2.4 16 Measuring tools 3.1.3c, 3.2.1 17 Internal audit 3.1.2b, 3.1.2d

4.2 Implementation of the Factory Production Control Manual

The NB shall assure himself that the manufacturer implements and reviews his FPC manual, and that he documents, and keeps records and reports in accordance with his FPC manual.


5 Initial Inspection of Factory and Factory Production Control

5.1 Initial Inspection of Initial Type Testing and/or Assessment

The manufacturer and the notified body are each responsible for part of the initial type testing and/or assessment (ITT). The notified body shall assess the ITT to ensure that it is representative of current production, and that the factory production control (FPC) will enable production to conform to the declared characteristics of the product. An example of a check list for the assessment of the ITT is given in Annex A.

5.2 Initial Inspection of Factory Production Control

The manufacturer is responsible for establishing, documenting and maintaining the factory production control system in a FPC manual, and for implementing and reviewing it. The notified body shall evaluate the FPC manual to ensure that its content is sufficient to ensure that the product is in conformity with the declared characteristics. Furthermore, the notified body shall check that the FPC manual include procedures etc. for the maintenance, implementation and review of the FPC manual.

The notified body shall document the results of his inspection.

NOTE 1 Before carrying out the initial inspection of factory and FPC the notified bodies may find it convenient to pre-evaluate the FPC manual. If nonconformities are found, these shall be closed before the initial inspection will be carried out.

NOTE 2 During the initial inspection it may be too early to ensure that the manufacturer has fully implemented the FPC manual. The notified body needs to focus on the manufacturer's ability and aim to do that. Full implementation can then be assessed as a part of the forthcoming continuous surveillance of FPC .

Examples of check lists for the initial inspection are given in Annex C FPC manual, Annex D Manufacturing of Glulam, Annex E Finger jointing of lamellae, Annex F EN 408 Finger joint bending tests, Annex G EN 391 Delamination tests, and Annex H EN 392 Shear tests.

NOTE It is important that notified bodies understand that they are only required to ascertain that the FPC as detailed in the manual is appropriate to meet the requirements of EN 14080 Annex ZA, and is maintained to ensure that it continues to achieve this, and that the FPC of the mill is implemented in accordance with the manual..

5.3 Initial Inspection of Testing of Samples according to a Prescribed Test Plan

The initial inspection of testing of samples according to a prescribed test plan is covered under clause 6.2 of this position paper.

6 EC Certificate of Conformity

The notified body shall issue an EC certificate of conformity only when its assessment of ITT and the initial inspection of factory and factory production control have been completed and the results of them are satisfactory. In cases when nonconformity is detected during the initial inspection, all nonconformities shall be dealt with to the satisfaction of the notified body.

The certificate should follow the examples available in several languages on GNB-CPD CIRCA, in document NB/CPD/AG/04/082r2 in folder NB-CPD/AG/03/003r1. An example of a product description for an EC Certificate of Conformity is given in Annex J.


An individual certificate may cover more than one mill provided that each mill operates an identical FPC, and may cover a range of glulam products. Alternatively, separate certificates may be provided for individual mills, production lines, product variants, etc.

NOTE An advantage of issuing separate certificates for different plants and products is that it may be easier to withdraw one certificate, if problems arise with one type of product (or the product is not produced anymore), than to revise a complex certificate covering multiple products and sites.

No expiry date shall be given in the certificate. However, the certificates shall be re-issued when EN 14080 is revised.

NOTE 1 The notified body inspects the FPC at least twice per year, so in general the certificate is confirmed after each inspection, although not re-issued.

NOTE 2 The year of the standard (EN 14080:2005) is given in the certificate. Hence, the certificate shall be revised when a new version of the standard replaces an older one.

If the manufacturer extends the product range or changes the raw materials, production lines, production methods or production equipment or intends to declare new or revised characteristics the notified body shall assess whether it is necessary to carry out a new initial assessment of ITT and inspection of factory and factory production control before he issues a new or extended EC Certificate of conformity. In any case the notified body shall assess the changes to the product and FPC.

7 Continuous Surveillance of Factory Production Control

The notified certification body shall carry out and document the continuous surveillance of factory production control to ensure that the results from the factory production control (FPC) conform to the declared characteristics of the product.

The FPC visits shall be carried out at least twice per year. The notified body decides if further FPC visits are needed when nonconformities in the FPC are identified. It is usual for NBs to co-ordinate their FPC surveillance with the production mill, but they have the discretion to make unannounced visits if required.

During the surveillance visits the notified body shall ensure that the manufacturer is implementing all parts of the FPC manual.

NOTE If the manufacturer has allocated incorrect grades or strength classes to timber pieces/lamellae, this is a failure of the manufacturers factory production control. The notified body shall then raise a nonconformity.

The notified body should use check lists during his control visits. Examples of check lists are given in Annexes B to I. Since the FPC manual has been inspected and assessed in detail as a part of the initial inspection of factory and FPC, it is not necessary to re-inspect the FPC manual during each visit. The FPC manual inspection should be focused on maintenance, implementation, internal reviews and possible revisions of the FPC manual.

If the notified body determines that the manufacturer has not implemented the FPC manual a nonconformity shall be raised. The manufacturer is then responsible to investigate the cause of the nonconformity and report his corrective and preventive actions to the notified body.

If the notified body assesses the manufacturers report on the nonconformity to be satisfactory he shall then inform the manufacturer of that and the certificate of factory production control shall remain valid.


If the notified body assesses the manufacturers report on the nonconformity to be unsatisfactory he shall then inform the manufacturer of that and the actions he intends to take. If the notified body decides to withdraw the certificate of factory production control he shall promptly inform the manufacturer of that and the reasons for it.


Annex A Checklist for assessment of ITT

Item Reference EN 14080

ITT Definition / Class / Reference

ITT-1 4.2

Product / Production definition:

- Production line(s), type(s)

- Species - Thickness of lamellae - Dimensions and

tolerances - Method of strength

classification (4.2.2-3-4)

- Strength classes, lamellae

- Grading rules and grades

- GL Strength classes - Strength profile (non-

GL) - Service class

(EN 14081-1, EN 1194, EN 1912, EN 338)

ITT-2 4.2 Grading of lamellae ITT Check list

ITT-3 4.3 Bonding strength. Large finger joints - geometry - product family - bending strength

(EN 387)

ITT-4 4.4.1 Natural durability: - Listed class - Tested class - Service class

(EN 350)

ITT-5 4.4.2 Treated against biological attack - Type of treatment - Approval (Biocide

Products Directive) - Influence on mechanical

properties - Influence on moisture

content

(prEN 15228 and Biocidal products directive 98/8/EC)

.


Item Reference EN 14080

ITT Definition / Class / Reference

ITT-6 4.5.1 Bonding Adhesive - Adhesive type - Type acc. to EN 301 - Type acc. to Annex C - Certificate - Specification

4.5.2 Annex A

Bonding strength of end joints - Bending strength acc.

EN 408, or - Tension strength acc.

EN 408 - Characteristic strength

acc. Annex A - Compliance criteria of

EN 1194:1999, 6.3.2

4.5.3 Bonding strength of glue lines - Lamella thickness - EN 391 delamination test - EN 392 shear test - Compliance criteria of

EN 386:2001, 5.5 - Service class

ITT-7 4.6 Reaction to fire: - Listed class - Tested class

ITT-8 4.7 Formaldehyde emission - Declared class - Tested class


Annex B Checklist follow up

Opening meeting and follow up

Nr. Ref. General Non-conformity / Remarks / Observations Ge-1 - Changes since last visit:

- Products - Certificates - Markings - Persons - Raw-material - Production process - Production equipment

Ge-2 - Actions since last visit: - Corrective actions - Information given to inspection body

Ge-3 - Reclaims: - Related to the product - Handled in a proper way - Recorded


Annex C Checklist FPC manual

Item Reference EN 14080 5.3

FPC manual OK Non-conformity / Remarks / Observations

FPC-1 EN 386 7.1.1 EN 386 7.2 EN 386 7.3

FPC System: - Established - Documented - Maintained - Implemented - Internal review

NOTE: This check list covers only the FPC manual. The ongoing FPC carried out by the manufacturer is controlled used separate checklists, Be-1 to Be-4, DE-1 to De-4, Gl-1 to Gl-6, Fi-1 to Fi-5 and Sh-1 to Sh-4

FPC-2 Organisation: - Key persons - FPC persons - Machine operators - Graders - Training

NOTE: To be inspected that the FPC manual defines all relevant persons, their competence and their responsibilities.

FPC-3 EN 386 7.1.1 EN 386 7.3

Raw and incoming material:- Instructions - Criteria for acceptance

and rejection - Control records

NOTE: To be inspected that the FPC manual defines the raw material. Furthermore, it has to include all control records to be used.

FPC-4 EN 386 7.1.1 EN 386 7.1.3 EN 386 7.3 EN 387 7

Production : - Production line and

type - Instructions - Recording - Control of process and

equipment handled in: Fi-1 to Fi-5, Gl-1 to Gl-6 and Lf-1 to Lf-3

NOTE: To be inspected that the FPC manual includes instructions for the whole production. Furthermore, it has to include all control records to be used.

FPC-5 EN 14081-1 Visual and EN 14081-4 Machine approvals

Grading conditions: - Skill of staff - Temperature of air - Relative humidity of air - Lighting and visibility - FPC and calibration

NOTE: Checklist in GNB-CPD SG 18 Position Paper

regarding EN 14081-1 shall furthermore be used

FPC-6 EN 386 7.1.2

EN 386 7.1.4 Tests: - Instructions - Recording - Control of tests and

equipment handled in: Be-1 to Be-4, DE-1 to De-4 and Sh-1 to Sh-4

NOTE: To be inspected that the FPC manual includes instructions for sampling, testing, calibration and evaluation of test results. Furthermore, it has to include all control records to be used.

FPC-7 EN 386 7.4 Non-conforming results: - Criteria for acceptance

and rejection - Proc. for supplemental

inspections/tests - Proc. for marking and

dispose of marking - Recording


Annex D Checklist Manufacture of Glulam

Nr. Ref. Manufacturing of Glulam

OK Non-conformity / Remarks / Observations

Gl-1 EN 386 6.1 Production conditions: - Skill of staff - Temperature of air - Relative humidity of air - Adhesive storage - FPC and calibration

Gl-2 EN 386 6.4.1 EN 1194 6.3

Lamellae and lay-up: - Planning - Thickness - Grade of outer lamellae - Grade of inner lamellae - Orientation - FPC and calibration

Gl-3 EN 386 6.3 Adhesive: - Type - Glue - Hardener - Best before - FPC of above

Gl-4 EN 386 6.3 EN 386 6-4

Adhesive application: - Surfaces - Mixing - Application - Open and closed time - FPC and calibration

Gl-5 EN 386 6.4 Pressing: - Cramping - Tightening-up - Time in press - Pressure in press - Temperature in press - Curing - FPC and calibration

Gl-6 EN 386 6.4 EN 390 5

Finished product - Storing - Dimensions - Surfaces - Marking - FPC and calibration


Annex E Checklist Finger jointing of lamellae

Nr. Ref. Finger jointing of lame llae OK Non-conformity / Remarks / Observations

Fi-1 EN 386 6.1 Production conditions: - Skill of staff - Temperature of air - Relative humidity of air - Adhesive storage - FPC and calibration

Fi-2 EN 385 5.2 EN 386 6.4.1

Lamellae at finger joints: - Finger profile - Knots and slope of grain - Wane and edge damage - Temperature - Moisture content - FPC and calibration

Fi-3 EN 386 6.3 Adhesive: - Type - Glue - Hardener - Best before - FPC of above

Fi-4 EN 385 6.3 Adhesive application: - Mixing - Application - Open and closed time - FPC and calibration

Fi-5 EN 385 6.4 EN 386 6.4.1

Pressing: - Time in press - Pressure in press - Curing - FPC and calibration


Annex F Checklist EN 408 Finger joint bending tests

Nr. Ref. Bending tests OK Non-conformity / Remarks / Observations

Be-1 EN 386 7.1.2 EN 385 7.1.2

Sampling: - Work shift - Production line - Grade - Adhesive - Number of specimens

Be-2 EN 385 7.1.3 Testing: - Method - Equipment - Calibration (Load)

Be-3 EN 385 7.1.3 Recording: - Date of production - Date of testing - Species - Grade - Type of adhesive - Dimensions - Ultimate load - Bending strength - Failure mode

Be-4 EN 386 7.1.2 EN 1194 6.3

Evaluation of results: - Declared bending strength - 100 last results (5% and min) - 15 last results (5%)


Annex G Checklist EN 387 Large finger joint

Nr. Ref. Dimension control OK Non-conformity / Remarks / Observations

Lf-1 EN 387 7.1 Sampling: - Work shift - Production line - Grade - Adhesive - Number of specimens

Lf-2 EN 387 7 Recording: - Date of production - Date of control - Species - Grade - Type of adhesive - Dimensions -Finger profile

Lt-3 EN 387

Evaluation of results:


Annex H Checklist EN 391 Delamination tests

Nr. Ref. Delamination tests OK Non-conformity / Remarks / Observations

De-1 EN 386 7.1.4


De-2 EN 386 5.5 EN 386 7.1.4

EN 391 6

Testing: - Method - Equipment - Calibration (Pressure vessel, drying duct and balance)

De-3 EN 391 6 Recording: - Test method - Date of production - Date of testing - Species - ID of Glulam member - Type of adhesive - Total delamination % - Maximum delamination %

De-4 EN 386 5.5 Evaluation of results: - Total delamination % - Maximum delamination %


Annex I Checklist EN 392 Shear tests

Nr. Ref. Shear tests OK Non-conformity / Remarks / Observations

Sh-1 EN 386 7.1.4


Sh-2 EN 386 5.5 EN 386 7.1.4

EN 392 6

Testing: - Method - Equipment - Calibration (Load)

Sh-3 EN 392 6 Recording: - Date of production - Date of testing - Species - ID of Glulam member - Type of adhesive - Ultimate load - Shear strength - Wood failure %

Sh-4 E 386 5.5 Evaluation of results: - Shear strength - Wood failure %


Annex J Examples of EC documents

This Annex gives an example of a product description for an EC Certificate of conformity under EN 14080 (AoC system 1). The certificate should follow the examples available in several languages on GNB-CPD CIRCA, in document NB-CPD/AG/04/082r2 in folder NB-CPD/AG/03/003r1

Strength classes GL 32h, GL 32c, GL 28h, GL 28c, GL 24h and GL 24c

Reaction to fire class D-s2,d0 Formaldehyde class E1

Adhesive Type I according to EN 301 Spruce (Picea abies) NNE Europe Durability Class 4

Service Class 1 and 2


Annex K EN standards applying to glued laminated timber to EN 14080

The following standards are used for the assessment and shall form part of the manufacturers FPC system

EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures: Classification and performance requirements

EN 338, Structural timber - Strength classes

EN 385, Finger jointed structural timber - Performance requirements and minimum production requirements

EN 386, Glued laminated timber - Performance requirements and minimum production requirements

EN 387, Glued laminated timber - Large finger joints - Performance requirements and minimum production requirements, when relevant

EN 390, Glued laminated timber - Sizes - Permissible deviations

EN 391, Glued laminated timber - Delamination test of glue lines, when relevant

EN 392, Glued laminated timber - Shear test of glue lines, when relevant

EN 408, Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties

EN 1194, Timber structures - Glued laminated timber - Strength classes and determination of characteristic values

EN 1912, Structural timber - Strength classes - Assignment of visual grades and species

EN 14080, Timber structures - Glued laminated timber Requirements

EN 14081-1, Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements

EN 14081-4, Timber structures - Strength graded structural timber with rectangular cross section - Part 4: Machine Grading - Grading machine settings for machine controlled systems, when relevant

prEN 15228, Structural timber - Structural timber preservative treated against biological attack , when relevant

Other documents

Commission Guidance Paper B, The Definition Of Factory Production Control In Technical Specifications For Construction Products

Commission Guidance Paper D, CE Marking Under The Construction Products Directive

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