SIST EN 14566:2008
(Main)Mechanical fasteners for gypsum plasterboard systems - Definitions, requirements and test methods
Mechanical fasteners for gypsum plasterboard systems - Definitions, requirements and test methods
This European Standard specifies the characteristics and performance of mechanical fasteners, including nails, screws and staples, intended to be used for the fixing of gypsum plasterboard, gypsum boards with fibrous reinforcement, products from secondary processing and suitable ancillary products as shown in Figure 2, to timber and metal, as appropriate, in building construction works. The fasteners secure the board to the framing enabling its surface to be finished by jointing or plastering to receive decoration. They can also be used for the construction of the framing and for the connection between substructure and load bearing components and for fixing boards together. Mechanical fasteners contribute to the stability of the assembly.
This European Standard covers the following product performance characteristics: reaction to fire and flexural strength to be measured according to the corresponding European test methods.
It provides for the evaluation of conformity of the product to this European Standard.
This European Standard also covers the additional technical characteristics that are of importance for the use and acceptance of the products by the construction industry and the reference tests for these characteristics.
This European Standard does not cover nails, screws and staples intended for use with materials other than plasterboard and the plasterboard based products referred to above and their associated system components.
Mechanische Befestigungsmittel für Gipsplattensysteme - Begriffe, Anforderungen und Prüfverfahren
Diese Europäische Norm legt die Eigenschaften und Leistung der mechanischen Befestigungsmittel, einschließlich Nägel, Schrauben und Klammern fest, die in Bauwerken zur Befestigung von Gipsplatten, faserverstärkten Gipsplatten, Produkten aus der Weiterverarbeitung und geeigneten Nebenprodukten, wie in Bild 4 dargestellt, auf Holz oder Metall, wie zutreffend, vorgesehen sind. Die Befestigungsmittel sichern die Platten auf der Unterkonstruktion und ermöglichen so, dass die mit Spachtel oder Putzauftrag versehenen Oberflächen gestrichen oder tapeziert werden können. Sie können auch zum Zusammenbau der Unterkonstruktion und für die Verbindung zwischen Unterkonstruktion und lasttragenden Teilen sowie zur Verbindung von Platten untereinander verwendet werden. Mechanische Befestigungsmittel tragen zur Stabilität des Gesamtsystems bei.
Diese Europäische Norm behandelt die folgenden Produkt-Leistungsmerkmale: Brandverhalten und Biegefestigkeit, die mit den entsprechenden europäischen Prüfverfahren nachzuweisen sind.
Sie legt die Bewertung der Konformität der von dieser Europäischen Norm erfassten Produkte fest.
Diese EN behandelt auch die zusätzlichen technischen Eigenschaften, die für die Anwendung und Akzeptanz der Produkte durch die Bauwirtschaft wichtig sind, und enthält die Referenzprüfverfahren für diese Eigenschaften.
Diese Europäische Norm gilt nicht für Nägel, Schrauben und Klammern, die für die Verarbeitung anderer Baustoffe als der oben erwähnten Gipsplatten oder aus Gipsplatten hergestellten Produkte und der zugehörigen System-Komponenten, verwendet werden.
Fixations mécaniques pour systèmes en plaques de plâtre - Définitions, spécifications et méthodes d'essai
La présente Norme européenne définit les caractéristiques et les performances des fixations mécaniques, telles que clous, vis et clous cavaliers, destinées à être utilisés pour fixer les plaques de plâtre, les plaques de plâtre armées de fibres, les produits obtenus par transformation secondaire ainsi que les produits accessoires appropriés représentés à la Figure 4 sur des ossatures en bois de construction et en métal, le cas échéant, dans les ouvrages de construction. Les fixations maintiennent la plaque de plâtre sur l’ossature, permettant ainsi à sa surface de recevoir une finition par jointoiement ou enduisage avant d’être décorée. Elles peuvent également servir à la construction de l’ossature et à la liaison entre l’infrastructure et les éléments porteurs ainsi qu’à la fixation des plaques entre elles. Les fixations mécaniques contribuent à la stabilité de l’assemblage.
La présente Norme européenne couvre les caractéristiques suivantes de performance des produits : réaction au feu et résistance à la flexion qui doivent être mesurées selon les méthodes d’essai européennes correspondantes.
Elle prévoit l’évaluation de la conformité du produit à la présente Norme européenne.
La présente Norme européenne couvre également les caractéristiques techniques supplémentaires qui sont importantes pour l’utilisation et l’acceptation des produits par l’industrie du bâtiment ainsi que les essais de référence relatifs à ces caractéristiques.
La présente Norme européenne ne couvre pas les clous, vis et clous cavaliers destinés à être utilisés avec des matériaux autres que les plaques de plâtre et les produits à base de plaques de plâtre mentionnés ci-dessus et les éléments associés correspondants.
Mehanska pritrdilna sredstva za sisteme iz mavčnih plošč - Definicije, zahteve in preskusne metode
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Mechanical fasteners for gypsum plasterboard systems - Definitions, requirements and test methodsFixations mécaniques pour systèmes en plaques de plâtre - Définitions, spécifications et méthodes d'essaiMechanische Befestigungsmittel für Gipsplattensysteme - Begriffe, Anforderungen und PrüfverfahrenTa slovenski standard je istoveten z:EN 14566:2008SIST EN 14566:2008en,de91.100.1021.060.99ICS:SLOVENSKI
STANDARDSIST EN 14566:200801-april-2008
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14566January 2008ICS 21.060.99; 91.100.10 English VersionMechanical fasteners for gypsum plasterboard systems -Definitions, requirements and test methodsFixations mécaniques pour systèmes en plaques de plâtre -Définitions, spécifications et méthodes d'essaiMechanische Befestigungsmittel für Gipsplattensysteme -Begriffe, Anforderungen und PrüfverfahrenThis European Standard was approved by CEN on 25 November 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14566:2008: E
EN 14566:2008 (E) 2 Contents page Foreword.3 Introduction.4 1 Scope.6 2 Normative references.6 3 Terms and definitions.7 4 Requirements.8 4.1 Reaction to fire.8 4.2 Flexural strength (bending behaviour).8 4.3 Release of (regulated) dangerous substances.8 4.4 Additional requirements.8 5 Test methods.10 5.1 General.10 5.2 Number of samples.11 5.3 Dimensional measurement.11 5.4 Determination of withdrawal force.11 5.5 Determination of bending behaviour.12 5.6 Drilling time test.13 5.7 Determination of the thickness and/or mass of coating.14 5.8 Determination of pull-through force.14 6 Evaluation of conformity.15 6.1 General.15 6.2 Type testing.16 6.3 Factory production control (FPC).16 7 Designation.18 7.1 Nails.18 7.2 Screws.18 7.3 Staples.18 8 Marking, labelling and packaging.19 Annex A (informative)
Examples of fixing types.20 Annex B (informative)
Sampling procedure for testing.23 Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive.25 Bibliography.29
EN 14566:2008 (E) 3 Foreword This document (EN 14566:2008) has been prepared by Technical Committee CEN/TC 241 “Gypsum and gypsum based products”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2008, and conflicting national standards shall be withdrawn at the latest by July 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. 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(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. 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, 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.
EN 14566:2008 (E) 4 Introduction Figures 1 and 2 show the relationship between this European Standard and the package of standards prepared to support the family of gypsum and ancillary products.
Figure 1 — Family of gypsum products
EN 14566:2008 (E) 5
Figure 2 — Family of ancillary products
EN 14566:2008 (E) 6 1 Scope This European Standard specifies the characteristics and performance of mechanical fasteners, including nails, screws and staples, intended to be used for the fixing of gypsum plasterboard, gypsum boards with fibrous reinforcement, products from secondary processing and suitable ancillary products as shown in Figure 2, to timber and metal, as appropriate, in building construction works. The fasteners secure the board to the framing enabling its surface to be finished by jointing or plastering to receive decoration. They can also be used for the construction of the framing and for the connection between substructure and load bearing components and for fixing boards together. Mechanical fasteners contribute to the stability of the assembly. This European Standard covers the following product performance characteristics: reaction to fire and flexural strength to be measured according to the corresponding European test methods. It provides for the evaluation of conformity of the product to this European Standard. This European Standard also covers the additional technical characteristics that are of importance for the use and acceptance of the products by the construction industry and the reference tests for these characteristics. This European Standard does not cover nails, screws and staples intended for use with materials other than plasterboard and the plasterboard based products referred to above and their associated system components. 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 338, Structural timber — Strength classes EN 520, Gypsum plasterboards — Definitions, requirements and test methods EN 10016 (all parts), Non-alloy steel rod for drawing and/or cold rolling EN 10230-1, Steel wire nails — Part 1: Loose nails for general applications EN 10327, Continuously hot-dip coated strip and sheet of low carbon steels for cold forming — Technical delivery conditions EN 14195, Metal framing components for gypsum plasterboard systems — Definitions, requirements and test methods EN ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005) EN ISO 7049, Cross recessed pan head tapping screws (ISO 7049:1983) EN ISO 7050, Cross recessed countersunk (flat) head tapping screws (common head style) (ISO 7050:1983) EN ISO 9001:2000, Quality management system — Requirements (ISO 9001:2000) EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2006) EN ISO 12777-3:2002, Methods of test for pallet joints — Part 3: Determination of strength of pallet joints
(ISO 12777-3:2002)
EN 14566:2008 (E) 7 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 plasterboard nail corrosion resistant steel wire nail with purpose made head, shank and point NOTE Nails can vary in head profile, material and level of corrosion resistance. See Table 1 and Table A.1. 3.2 plasterboard screw screw used without pilot holes for the assembly of plasterboard systems NOTE Screws which go directly into plasterboard usually have a trumpet head. They are straight and free from burrs and capable of being driven by a power operated screwdriver. See Table A.2. 3.3 head wide part of nail or screw used to drive the nail or screw into the materials to be joined NOTE The head of nails can be one of two types according to function (see Table A.1). The surface can be smooth or chequered. The head of screws can be domed, flat or concave depending upon its use (see Table A.2). 3.4 point sharp end opposite to the head which first penetrates the materials to be joined NOTE The style and shape of the nail point is formed to permit entry and penetration of the timber. 3.5 shank connection between the head and the point NOTE Nails have a straight shank. The diameter of the round shank can vary according to length, function and thickness of the corrosion resistant treatment. It may be plain, have indentations, be annular ring rolled or may be separately treated to improve resistance to withdrawal. 3.6 thread spiral extension to the shank of specific pitch and diameter appropriate to its function and use NOTE The thread may be of single or multiple lead design. 3.7 plasterboard staple double right angle, fastener, made from round, oval, square or rectangular wire, with two legs (shanks) usually of the same length connected by its crown (head) with the tips inclined, see Table A.4 NOTE Staples are U shaped, neatly formed and free from defects. Staples can be resin coated to increase withdrawal strength. The legs are straight and parallel and can be designed, in conjunction with the tip, to provide additional holding power when driven into substrate. The style and shape of the tips permit entry and guide and control the line and shape of the penetration of the timber or substrate. The tips have an inclined plane on one or both sides.
EN 14566:2008 (E) 8 4 Requirements 4.1 Reaction to fire Plasterboard nails, screws and staples made from steel are classified A1 (EN 13501-1) (no contribution to fire) without testing when they are not coated. When they have an organic coating, their contribution to reaction to fire in end use condition is so small in the total assembly that they have no influence on the classification of the system tested. 4.2 Flexural strength (bending behaviour) When tested in accordance with 5.5 no fastener shall show signs of breakage or cracking. 4.3 Release of (regulated) dangerous substances NOTE See Annex ZA. 4.4 Additional requirements 4.4.1 Protective treatment Where the producer is using a protective coating to achieve durability, the coating shall be sufficient to provide a satisfactory level of protection against corrosion. It shall reflect the condition where the fastener is subjected to temporary exposure during storage, construction and its remaining life in an unexposed cavity of the completed building. Fasteners protected with coating other than zinc shall satisfy one of the three classes of performance given in Table 1, when tested in accordance with EN ISO 9227. This class shall be stated by the producer in its technical literature. Table 1 — Classes of corrosion protection Classification Test duration In hours Criterion Class 24 24 No visible rusting Class 48 48 No visible rusting Class 96 96 No visible rusting
Fasteners protected with zinc coating shall have a minimum coating thickness of 5 µm (35 g/m²) for screws and nails and 3 µm (21 g/m²) for staples when tested in accordance with 5.7. 4.4.2 Requirements for plasterboard nails 4.4.2.1 Materials Plasterboard nails shall be produced from wire drawn from rods produced in accordance with EN 10016-1 to -4. 4.4.2.2 Head - Dimensions and tolerances The diameter and tolerance of the head shall be stated by the producer in its technical literature. When measured in accordance with 5.3.3.3, no more than five nails shall fail.
EN 14566:2008 (E) 9 4.4.2.3 Shank The shank diameter and tolerance shall be stated by he producer in its technical literature. When measured in accordance with 5.3.3.1, no more than five nails shall fail. 4.4.2.4 Length The nominal length and tolerance shall be stated by the producer in its technical literature. When measured in accordance with 5.3.3.2, no more than five nails shall fail. 4.4.2.5 Withdrawal force The withdrawal force from wood shall be at least 200 N when tested in accordance with 5.4. Not more than five nails shall fail. 4.4.3 Requirements for plasterboard screws 4.4.3.1 Materials and manufacture Plasterboard screws shall be manufactured from carbon steel either to EN ISO 7049 or EN ISO 7050. 4.4.3.2 Withdrawal force The diameter and pitch of the threaded portion shall also be capable of providing sufficient withdrawal force to allow the screw to achieve a minimum value of 450 N when tested in accordance with 5.4. Not more than five screws shall fail. 4.4.3.3 Point The points shall be designed to be self tapping (designation N) or self drilling (designation D) (see Table A.2 for examples of fastener types). For type N screws, the points shall be designed with suitable thread to be capable of penetrating 0,6 mm galvanised steel sheet to EN 10327 when screws are tested in accordance with 5.6. No more than 5 screws shall exceed a penetration time of 1 s. For type D screws, the points shall be designed to allow penetration of sections made from steel sheet to
EN 10327 up to a thickness of 2 mm when screws are tested in accordance with 5.6. No more than 5 screws shall exceed a penetration time of 4 s. 4.4.3.4 Length The nominal length and tolerances shall be stated by the producer in its technical literature. When measured in accordance with 5.3.3.2, no more than five screws shall be outside the stated tolerances. 4.4.3.5 Hardness The surface of the screws shall be case hardened to a minimum depth of 0,05 mm with a case hardness of
55 HRC to Rockwell cone according to EN ISO 6508-1. Not more than five screws shall fail.
EN 14566:2008 (E) 10 4.4.4 Requirements for plasterboard staples 4.4.4.1 Materials and manufacture Staples shall be manufactured from steel wire to EN 10230-1 by rolling to form a rectangular profile with oval edges having a minimum tensile strength of 950 N/mm2 for wires of 1 mm to 1,3 mm and of 680 N/mm2 for wires greater than 1,3 mm. 4.4.4.2 Withdrawal force The withdrawal force of the staple from timber shall be 100 N when tested in accordance with 5.4. Not more than five staples shall fail. 4.4.4.3 Length The nominal length and tolerances shall be stated by the producer. When measured in accordance with 5.3.3.2, no more than five staples shall be outside the stated tolerances. 4.4.4.4 Crown width The nominal width and tolerances of the crown shall be stated by the producer. When measured in accordance with 5.3.3.3, no more than five staples shall be outside the stated tolerances. 5 Test methods 5.1 General Not all tests specified in Clause 4 are appropriate to every type of fastener. Those tests which results from the requirements of clause 4 shall be carried out. For convenience, these are summarised in the Table 2 below. Table 2 — Test methods Tests to be done Nails Screws Staples 5.3.3.1 Diameter of shank 4.4.2.3
5.3.3.2 Length 4.4.2.4 4.4.3.4 4.4.4.3 5.3.3.3 Head diameter or Crown width 4.4.2.2
4.4.4.4 5.4 Withdrawal force 4.4.2.5 4.4.3.2 4.4.4.2 5.5 Bending behaviour 4.2 4.2 4.2 5.6 Drilling performance test
4.4.3.3
5.7 Determination of coating thickness/mass 4.4.1 4.4.1 4.4.1 EN ISO 6508-1 Hardness
4.4.3.5
EN 14566:2008 (E) 11 5.2 Number of samples Testing requires a representative quantity of samples proportionate to the delivery or consignment covering each type, length and profile. Certain test methods specify a minimum number of specimens and the quantity sampled shall be sufficient to enable all the tests to be carried out. When no specific number is indicated in the respective test methods, a minimum of 50 fasteners shall be tested. NOTE Informative Annex B gives suggested methods for sampling. 5.3 Dimensional measurement 5.3.1 Principle Diameter of shank, length, head thickness and diameter, where relevant, shall be measured. 5.3.2 Apparatus a) micrometer permitting a reading to 0,01 mm; b) vernier calliper permitting a reading to 0,1 mm. 5.3.3 Procedure 5.3.3.1 Diameter of shank Measure the diameter of shank with the micrometer in three separate positions on a representative surface area away from point or tip. 5.3.3.2 Length Place the specimen in the vernier calliper and measure the overall length. 5.3.3.3 Head diameter or crown width Place the head or the crown of the specimen in the micrometer and measure the head diameter or crown width. 5.3.3.4 Expression of results Record the results to the nearest 0,1 mm. Compare the difference between each measured value and the nominal value with the producer’s declared tolerance. 5.4 Determination of withdrawal force 5.4.1 Principle The force to withdraw a fastener from a piece of timber or a metal section shall be measured. 5.4.2 Apparatus a) testing device as shown in Figure 3; b) calibrated loading machine, capable of applying a force of 1 000 N ± 10 N at a rate of (450 ± 200) N per min; c) metal section (0,60 ± 0,04) mm thick to EN 14195. d) timber member 50 mm × 50 mm (fastener perpendicular to the grain) conforming to EN 338, class C 16 having (15 ± 3) % moisture content.
EN 14566:2008 (E) 12 Dimensions in millimetres
Key 1 coupling ring 2 clamping device adapted to the type of fastener (the figure gives example for screws) 3 support (plate) 4 metal section or wood Figure 3 — Device for determining the extraction force of fasteners 5.4.3 Procedure Prepare the timber section which should be free from knots, local grain distortion, fissures and warping. Drive the appropriate fastener perpendicular into the timber to a depth of 20 mm. In the case of metal a depth of 10 mm is required. Anchor the support plate. Apply the clamping device to the head or crown of the fastener. Attach the coupling ring to the loading machine. Apply a progressive force at the rate of 450 N per min to determine the total withdrawal force. 5.4.4 Expression of results Record the test results and compare with the requirements of 4.4.2.5, 4.4.3.2 and 4.4.4.2. 5.5 Determination of bending behaviour 5.5.1 Principle The fastener is clamped in such a way as to resist bending at two points A and B (see Figure 3 of
EN ISO 12777-3:2002). A force is then applied to the unclamped portion of the fastener at a set point C, using a pivot bending actuator to which torque is applied.
EN 14566:2008 (E) 13 5.5.2 Apparatus A three point loading static bend apparatus as described in EN ISO 12777-3 or equivalent. 5.5.3 Procedure Clamp the fastener under test in the position required by the particular apparatus in use. Slowly apply a force to produce a bend (10° and 15° for pointed and flat end screws, respectively, and 90° for nails and staples over a radius not greater than the diameter of the nail or staple) in the shank. 5.5.4 Expression of results Record any breakage or signs of cracking visible with 10 × magnifying lens. 5.6 Drilling time test 5.6.1 Principle The ability of the screw to penetrate a piece of galvanised steel under controlled force and speed is measured. 5.6.2 Apparatus a) Phillips number 2 bit or to screw producer’s specification; b) power screwdriver 300 w
to 350 w, no load speed (2 350 ± 350) revolutions per min; c) fixed support mounting for the power screwdriver; d) application force: Power screwdriver plus dead weight = 15 kg; e) stop watch with pre-setting to start at the commencement of drilling and stop when screw penetrates to a depth of 10 mm. This fixed depth allows all lengths of screws to be tested; f) cold rolled galvanised steel sheet (0,6 ± 0,04) mm manufactured to EN 10327 of a size large enough for 50 type N screws to be inserted without interference with one another.(See Table A.2). g) cold rolled galvanised steel sheet (2 ± 0,09) mm manufactured to EN 10327 of a size large enough for 50 type D screws to be inserted without interference with one another. (See Table A.2). 5.6.3 Procedure Select 50 screws from the batch of screws to be tested. Secure the sample metal below the mounted screwdriver. Locate the bit in the power screwdriver and engage a sample screw with the tip of the screw in contact with the metal prior to power being applied. Set the stop watch to zero. Start the drill. The watch will stop automatically after the screw has penetrated 10 mm. Note the penetration time for type N screws and repeat for the remainder or note the number of type D screws which fail to penetrate. 5.6.4 Expression of results Record for type N screws, the average drilling time and the number of screws exceeding the 1 s penetration time (see 4.4.3.3.). Record for type D screws, the average drilling time and the number of screws exceeding the 4 s penetration time (see 4.4.3.3.).
EN 14566:2008 (E) 14 5.7 Determination of the thickness and/or mass of coating 5.7.1 Principle The thickness and/or mass of the coating may be measured in two ways: a) using electro or magnetic probe (for thickness); b) stripping method (for mass and thickness). 5.7.2 Apparatus a) electro or magnetic probe measuring equipment or a micrometer permitting a reading to 0,01 mm; b) stripping reagent made by dissolving about 3,2 g of antimonous chloride (Sb Cl3) or 2 g of antimonous oxide (Sb2O3) in 500 ml of concentrated hydrochloric acid. Dilute the solution with distilled water to 1 000ml. 5.7.3 Procedure 5.7.3.1 Probe The electro or magnetic equipment gives direct readings. 5.7.3.2 Stripping Measure the thickness T or weight W of the product, including the coating; immerse the sample completely in stripping reagent at room temperature and leave until the coating has completely dissolved. The end of the dissolution process can be recognised by the cessation of the original brisk evolution of hydrogen. Rinse the sample in running water and, if necessary, brush to remove any loose substance which may be adhering to the surface. Dip in alcohol and quickly dry. Measure the thickness t or weight w of the base metal. The coating thickness is given by: 1/2 (T - t). The coating mass is given by: w21. (W-w).100 in % 5.7.4 Expression of results Record the measurements of thickness or weight and calculate the arithmetic average for each of the five specimens. Compare the results with the producer’s declared thickness or weight and tolerances for the coating. 5.8 Determination of pull-through force 5.8.1 Principle The test is to determine the resistance against pull through provided by the head or crown of the fastener through the plasterboard. 5.8.2 Apparatus a) testing device as shown in Figure 4; b) calibrated loading machine, capable of applying a force of (1 000 ± 10) N applied at rate of (450 ± 200) N per min; c) 12,5 mm gypsum plasterboard to EN 520, of the type for which the fastener is intended to be used. Fasteners intended to be used only in board thicker that 12,5 mm shall be tested with the thinnest board of the intended type.
EN 14566:2008 (E) 15 Dimensions in millimetres
Key 1 coupling ring 2 clamping device 3 support (plate) 4 gypsum plasterboard
Figure 4 — Device for determining the pull-through force of the fasteners 5.8.3 Procedure The fastener shall be driven through the plasterboard in such a manner that the shank penetrates the plasterboard vertically to the surface with the head/crown levelled with the paper surface unless the screw head does not require countersinking. Place the board under the support plate and attach the clamping device to the fastener. Apply a progressive force at the rate of (450 ± 200) N per minute to determine the pull-through force. 5.8.4 Expression of results Record the force in Newtons, required to pull the fastener through the board. 6 Evaluation of conformity 6.1 General The compliance of mechanical fasters with the requirements of this document and with the stated values (including classes) shall be demonstrated by: Initial Type Testing (ITT); Factory Production Control by the producer (FPC).
EN 14566:2008 (E) 16 For the purposes of testing, mechanical fasters may be grouped into families, where it is considered that the selected property is common to all mechanical fasters within that family. The decision on those products or properties which fall within a family shall be made by the producer. 6.2 Type testing 6.2.1 General Sampling and testing shall be in accordance with Clause 5. The results of all type tests shall be recorded and held by the producer for at least 5 years. 6.2.2 Initial type testing Initial type testing shall be performed to show conformity with this document. Initial type testing shall be performed at the beginning of the production of a new mechanical fasters type (unless it is a member of a family previously tested) or at the beginning of a new method of production (where this may significantly affect the stated properties). Tests previously performed in accordance with the provisions of this European Standard (same product, same characteristic(s), test method, sampling procedure, system of attestation of conformity etc.) may be taken into account. All product characteristics in Clause 4 applicable to the intended uses shall be subject to initial type testing, with the following exceptions: release of dangerous substances may be assessed indirectly by controlling the content of the substance concerned; when design values or declared value
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