SIST EN 12737:2004+A1:2008
(Main)Precast concrete products - Floor slats for livestock
Precast concrete products - Floor slats for livestock
This document specifies the requirements for reinforced and prestressed precast concrete floor slats used in slatted floors for the housing of livestock and provides for the evaluation of conformity of these products. This document does not cover slats for loadings other than stock and stockmen.
Betonfertigteile - Spaltenböden für die Tierhaltung
Dieses Dokument legt die Anforderungen an bewehrte und vorgespannte vorgefertigte Betonelemente als Spaltenböden für die Tierhaltung fest und regelt die Bewertung der Konformität dieser Produkte. Dieses Dokument gilt nicht für Spaltenböden, die anderen Belastungen als von Tieren und deren Haltern ausgesetzt sind.
Produits préfabriqués en béton - Caillebotis pour bétail
La présente Norme européenne spécifie les exigences relatives aux caillebotis préfabriqués en béton armé et précontraint utilisés dans les planchers ajourés destinés à la stabulation du bétail et fournit l'évaluation de la conformité de ces produits. La présente norme ne concerne pas les caillebotis destinés à supporter d'autres charges que le bétail et les éleveurs.
Montažni betonski izdelki - Hlevske gredice
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Precast concrete products - Floor slats for livestockMontažni betonski izdelki - Hlevske grediceProduits préfabriqués en béton - Caillebotis pour bétailBetonfertigteile - Spaltenböden für die TierhaltungTa slovenski standard je istoveten z:EN 12737:2004+A1:2007SIST EN 12737:2004+A1:2008en,fr91.100.30Beton in betonski izdelkiConcrete and concrete products65.040.10Poslopja, naprave in oprema za živinoLivestock buildings, installations and equipmentICS:SLOVENSKI
STANDARDSIST EN 12737:2004+A1:200801-januar-2008
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12737:2004+A1
October 2007 ICS 65.040.10; 91.100.30 Supersedes EN 12737:2004 English Version
Precast concrete products - Floor slats for livestock
Produits préfabriqués en béton - Caillebotis pour bétail
Betonfertigteile - Spaltenböden für die Tierhaltung This European Standard was approved by CEN on 24 June 2004 and includes Amendment 1 approved by CEN on 30 August 2007.
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, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12737:2004+A1:2007: E
EN 12737:2004+A1:2007 (E) 2 Contents !The numbering of clauses is strictly related to EN 13369:2004, Common rules for precast concrete products, at least for the first three digits. When a clause of EN 13369:2004 is not relevant or included in a more general reference of this standard, its number is omitted and this may result in a gap on numbering."
page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Requirements.6 4.1 Material requirements.6 4.2 Production requirements.6 4.3 Finished product requirements.7 5 Test methods.14 5.1 Compressive strength.14 5.2 Geometrical characteristics.14 5.3 Cement content.14 5.4 Water/cement ratio.14 5.5 Water absorption.14 6 Evaluation of conformity.14 7 Marking.14 8 Documentation.14 Annex A (normative)
Additional scheme for finished product inspection.15 Annex B (normative)
Acceptance testing of a consignment at delivery.16 B.1 General.16 B.2 Non-certified products.17 B.3 Certified products.17 Annex Y (informative)
!!!!Choice of CE marking method.18 Y.1 General.18 Y.2 Method 1.18 Y.3 Method 2.18 Y.4 Method 3.18 Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 89/109/EEC, EU Construction Products Directive.19 ZA.1 Scope and relevant characteristics.19 ZA.2 Procedure for attestation of conformity of floor slats.21 ZA.2.1 System of attestation of conformity.21 ZA.2.2 EC Certificate and Declaration of conformity.22 ZA.3 CE marking and labelling.23 ZA.3.1 General.23 ZA.3.2 Declaration of geometrical data and material properties.25 ZA.3.3 Declaration of product properties.26 ZA.3.4 Declaration of compliance with a given design specification.30 Bibliography.32
EN 12737:2004+A1:2007 (E) 3
Foreword This document (EN 12737:2004+A1:2007) has been prepared by Technical Committee CEN/TC 229 “Precast concrete products”, the secretariat of which is held by AFNOR and was examined by and agreed with a joint working party appointed by the Liaison Group CEN/TC 229-TC250, particularly for its compatibility with structural Eurocodes.
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 April 2008, and conflicting national standards shall be withdrawn at the latest by July 2009. This document supersedes EN 12737:2004. This document includes Amendment 1, approved by CEN on 2007-08-30. The start and finish of text introduced or altered by amendment is indicated in the text by tags !". !deleted text" !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 the Construction Products Directive (89/106/EEC). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document." This document is consistent with the Council Directive 2001/88/EC of 23 October 2001 amending Directive 91/630/EEC laying down minimum standards for the protection of pigs. 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 the United Kingdom.
EN 12737:2004+A1:2007 (E) 4 1 Scope This document specifies the requirements for reinforced and prestressed precast concrete floor slats used in slatted floors for the housing of livestock and provides for the evaluation of conformity of these products. This document does not cover slats for loadings other than stock and stockmen. 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 13369:2004, Common rules for precast concrete products 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13369:2004 and the following apply. 3.1 floor slat floor component suitable for use by livestock situated above a slurry pit or channel and provided with openings for the draining of slurry, feed and straw waste to the slurry pit or channel underneath (see Figure 1) 3.2 slat beam single beam used as a floor slat 3.3 twin slat assembly of two parallel spaced beams, mutually linked by means of two or more transversal connections, perpendicular to the longitudinal direction of those beams used as a floor slat 3.4 multiple slat assembly of two or more parallel spaced beams, mutually linked by means of two or more transversal connections, perpendicular to the longitudinal direction of those beams, and/or with a perforated slab in between used as a floor slat 3.5 perforated panel panel with a regular pattern of holes used as a floor slat 3.6 load class class of floor slats according to the type of stock and mass of animal (see Table 3)
EN 12737:2004+A1:2007 (E) 5
3.7 acceptance number highest number of nonconforming products for which the consignment is accepted 3.8 rejection number smallest number of nonconforming products for which the consignment is rejected
a) Slat beams
b) Twin slats
c) Multiple slats
d) Perforated panels Figure 1 — Examples of floor slats
EN 12737:2004+A1:2007 (E) 6 4 Requirements 4.1 Material requirements 4.1.1 General Subclause 4.1.1 of EN 13369:2004 shall apply. 4.1.2 Constituent materials of concrete Subclause 4.1.2 of EN 13369:2004 shall apply, provided that high alumina and super-sulphated cement are not used. Special consideration shall be given to aggregates which may become slippery under the abrasion of hooves. 4.1.3 Reinforcing steel 4.1.3.1 Bars, coils and welded fabric Subclause 4.1.3 of EN 13369:2004 shall apply. 4.1.3.2 Lattice girders The suitability of lattice girders shall be verified following 4.1.1 of EN 13369:2004. 4.1.4 Prestressing steel Subclause 4.1.4 of EN 13369:2004 shall apply. 4.2 Production requirements 4.2.1 Concrete production Subclause 4.2.1 of EN 13369:2004 shall apply. 4.2.2 Hardened concrete Subclause 4.2.2 of EN 13369:2004 shall apply, provided that the strength class is at least C35/45 for reinforced concrete and at least C 45/55 for prestressed concrete. 4.2.3 Structural reinforcement Subclause 4.2.3 of EN 13369:2004 and the following shall apply. The reinforcement shall be positioned correctly throughout the component. The longitudinal reinforcement of reinforced concrete components shall continue to less than 10 mm and more than 25 mm before the head-end of the component. The exposed ends of prestressing tendons shall be protected.
EN 12737:2004+A1:2007 (E) 7 4.3 Finished product requirements 4.3.1 Geometrical characteristics 4.3.1.1 Dimensions The nominal length of the floor slat shall be declared by the manufacturer. The nominal sizes of the beam width and gap width between beams, or for perforated slabs the diameter of round holes shall be as given in Table 1 (see also Figure 2). Table 1 — Nominal sizes for floor slats (dimensions in millimetres) Load class Beam width (b) Gap width (s) Hole diameter (d) A1 70 - 120 20 - 28 ≤ 30 A2 70 - 160 30 - 35 A3 70 - 180 30 - 40 ≤ 50 B1 50 - 80 10 – 14 a ≤ 20 B2 80 - 120 14 - 18 B3 80 - 120 14 - 20 ≤ 25 a For piglets, the maximum gap width is 11 mm (see Council Directive 2001/88/EC of 23 October 2001).
EN 12737:2004+A1:2007 (E) 8
Key r ≤ 5 mm for load class A 5 ≤ h1 (mm) ≤ 20 ≤ 3 mm for load class B 88° ≤ α ≤ 90° β ≥ 5° Figure 2 — Geometry of slat beam sections 4.3.1.2 Dimensional tolerances The maximum permitted dimensional deviations of length (∆ l), height (∆ h), beam width (∆ b) or gap width (∆ s) and diameter (∆ d) of round holes shall be as given in Table 2. Table 2 — Maximum permitted dimensional deviations (dimensions in millimetres) Maximum permitted deviation Load class ∆ l ∆ h ∆ b = ∆ s ∆ d A1 ± 3 A2 A3 + 0 − 10 ± 3 ± 5 ± 5 B1 ± 2 ± 2 B2 B3 + 0 − 6 ± 3 ± 3 ± 3
EN 12737:2004+A1:2007 (E) 9 4.3.1.3 Shape of the gaps The inclination of the side faces of the openings in floor slats shall conform to Figure 2 so as to enable efficient slurry drainage. The top of the beams shall have no sharp edges. Where radius or chamfer are provided these shall not exceed 5 mm for load class A and 3 mm for load class B. 4.3.1.4 Flatness The upper face of the floor slats shall be flat across the width. The flatness of end supported floor slats subjected only to their self weight shall conform to the following: for reinforced concrete components the upper face of the component shall not deviate more than 5 mm from the connection line between the upper faces at the ends; for prestressed concrete components the vertical camber along the length of the component shall not deviate from the declared camber by more than 5 mm. 4.3.2 Surface characteristics Before use, the upper face and edges shall be free from burrs and projections. At departure from the factory, slats shall show no cracks with a width greater than 0,1 mm. 4.3.3 Mechanical resistance 4.3.3.1 General Subclause 4.3.3.1 of EN 13369:2004 shall apply. 4.3.3.2 Loads Table 3 gives the classification of the slats for livestock housing defined on the base of type of stock and mass of animals.
EN 12737:2004+A1:2007 (E) 10 !!!!Table 3"""" — Classification of floor slats for livestock housing Load class Type of stock Mass of animal (kg) A1 Calves < 200 A2 A3 Cattle 200 - 825 B1 Piglets and weaner pigs < 40 B2 Rearing and finishing pigs, sheep and goats 20 - 125 B3 Gilts after service, sows and boars, sheep and goats 25 - 250 NOTE 1 Mass of animal relates to the average of a group. The mass of a single animal can exceed the tabulated mass by up to 15 %. NOTE 2 Type of livestock not mentioned in this table should be classified according to their mass.
Floor slats for use solely by stock and stockmen shall be designed in accordance with the indicated vertical and horizontal variable characteristic loads. Self weight of floor slats and other additional loads (e.g. self weight of pen partitions, feeding troughs, .) shall be dealt with in the design. The following variable characteristic loads shall be taken: a vertical characteristic linear load qk; a vertical characteristic point load Fk,v; a horizontal characteristic point load Fk,h. Values of qk, Fk,v and Fk,h shall be as given in Table 4. For single beams these values shall be multiplied by 1,1. !!!!Table 4"""" — Characteristic loading values Load class Linear load qk
(kN/m) Vertical point load Fk,v (kN) Distance a (m) Horizontal point load Fk,h (kN) A1 2,5 1,2 0,5 0,5 A2 5,0 4,2 0,8 2,5 A3 5,0 4,2 0,8 2,5 B1 0,8 0,8 0,3 0,1 B2 1,5 1,0 0,5 0,5 B3 2,5 1,3 0,5 1,0 The given loading values include possible dynamic effects.
EN 12737:2004+A1:2007 (E) 11 NOTE Special consideration in design should be given to loading values for stock with a mass of animal greater than the maximum values of load classes A2/A3 and B3. 4.3.3.3 Design by calculation 4.3.3.3.1 General Subclause 4.3.3.2 !deleted text" of EN 13369:2004 and the following shall apply. 4.3.3.3.2 Load cases The following load cases shall be taken into account separately: a) A combination of a vertical characteristic linear load qk and a vertical characteristic point load Fk,v, located at the most unfavourable position on the axis of a beam (see Figure 3). Further linear load(s) qk, placed at distance a (see Table 4) shall be added if this increases the action-effect. The vertical point load shall act at a location that is relevant for the action-effect under consideration. NOTE 1 Locations within a distance h from the inner edge of a support, where h is the height of the floor slat, need not be considered. In the case of floor slats with a/2 < b1 < a where b1 = bo - b - s and bo represents the overall slat width, b the beam width and s the gap width, a linear load k12qab−1 shall be added at distance b1. The combination of a linear load qk and a vertical point load Fk,v shall be replaced by a point load 2 Fk,v, located at the most unfavourable position on the axis of a beam, whenever this increases the action-effect.
Key 1 Variable Figure 3 — Vertical loads b) A horizontal characteristic point load Fk,h, acting at the most unfavourable location for the action-effect under consideration (see Figure 4). NOTE 2 The torsional effects caused by the horizontal point load need not be considered.
EN 12737:2004+A1:2007 (E) 12
Key 1 Variable Figure 4 — Horizontal load 4.3.3.3.3 Partial safety factors Partial safety factors for all loads shall be 1,25 in the ultimate limit state and 1,0 in the serviceability limit state. Partial safety factors for material properties shall be 1,5 for concrete and 1,15 for reinforcing and prestressing steel. For reduction of partial safety factors, Annex C of EN 13369:2004 shall apply. 4.3.3.3.4 Section and member design The following aspects shall be taken into account: a) Internal forces and moments In multiple slats with at least one intermediate transversal connection, it may be assumed that loads acting at the crossings of longitudinal beams and transversal connections are distributed over the various beams as if the connections have infinitely great stiffness. This may be assumed only on the condition that the cross sectional area of the connections equals at least 0,85 times the cross sectional area of the beams, and that the upper and lower reinforcement bars of the connections possess satisfactory anchorage. The torsional stiffness may only be taken into account when the torsional stresses are checked and taken on by reinforcement. b) Ultimate limit state The shear reinforcement of floor slats may be omitted on the condition that the design value of the applied shear force is not greater than the design shear resistance of the section of a slat without shear reinforcement. c) Serviceability limit state Design in the serviceability limit state shall include the following limit states: 1) Cracking
EN 12737:2004+A1:2007 (E) 13 For reinforced concrete components, the maximum design crack width at the concrete surface due to characteristic loads shall not exceed min0,20ccwith a maximum of 0,25 mm, where c is the chosen concrete cover to the outer reinforcement and cmin is the concrete cover to be applied as stipulated in 4.3.4.2. For prestressed concrete components under characteristic loads, all parts of the tendons shall lie at least 25 mm within the concrete compression zone. 2) Deflection The design deflection of the component shall not exceed l/250 with a maximum of 12 mm where l is the theoretical span, given in millimetres. 4.3.3.4 Design by testing Subclause 4.3.3.4 of EN 13369:2004 and the following shall apply. The design by testing with respect to an ultimate or serviceability limit state, under the load conditions specified in 4.3.3.3.2, shall lead to the same level of reliability as the design by calculation. The design by testing procedure shall be developed by the manufacturer and be approved by the relevant party. 4.3.4 !!!!Resistance and reaction to fire 4.3.4.1 Resistance to fire Subclauses 4.3.4.1 to 4.3.4.3 of EN 13369:2004 shall apply." 4.3.7 Durability 4.3.7.1Durability of concrete 4.3.7.1.1 Concrete composition The concrete shall have a composition such that the water/cement ratio is no more than 0,45 and the cement content no less than 320 kg/m3. NOTE The minimum cement content of 320 kg/m3 may be assumed suitable for CEM I and CEM II. For other cement types with a lesser proportion of clinker, a higher cement content may be necessary to ensure a satisfactory carbonatation resistance. 4.3.7.1.2 Water absorption Water absorption of concrete shall not exceed 5 % by mass. 4.3.7.2 Concrete cover The minimum concrete cover to be applied on the outer reinforcement shall be at least 25 mm for reinforced concrete components, and 35 mm for prestressed concrete components. NOTE 1 This value can be reduced by 5 mm if the maximum aggregate particle size does not exceed 20 mm. In addition, another reduction of 5 mm can be made where concrete of strength class C 40/50 and above is used. NOTE 2 Lower cover values are permitted if the reinforcement is adequately protected against corrosion.
EN 12737:2004+A1:2007 (E) 14 5 Test methods 5.1 Compressive strength Subclause 5.1.1 of EN 13369:2004 shall apply. 5.2 Geometrical characteristics Dimensional tolerances and shape tolerances of floor slats shall be verified in accordance with Annex J of EN 13369:2004. 5.3 Cement content The cement content of concrete shall be verified on the basis of the factory production documents. 5.4 Water/cement ratio The water/cement ratio of concrete shall be verified on the basis of the results from measurements of the effective water content and the mass of added cement. 5.5 Water absorption Subclause 5.1.2 of EN 13369:2004 shall apply. 6 Evaluation of conformity Clause 6 of EN 13369:2004 shall apply. An additional scheme for finished product inspection is given in Annex A. For acceptance testing of a consignment at delivery, Annex H of EN 13369:2004 and Annex B apply. 7 Marking Clause 7 of EN 13369:2004 shall apply. In addition, marking shall include: the load classification; the number of this document; the mark, if applicable. NOTE Additional information can be added in the form of an identified coding. 8 Documentation The manufacturer shall supply the procedures for delivery, handling, storage, transport and installation (including the bearing) and should include adequate information on marking and use.
EN 12737:2004+A1:2007 (E) 15 Annex A (normative)
Additional scheme for finished product inspection
Subject Aim Method Frequency 1 Dimensions Conformity with 4.3.1.1 and 4.3.1.2 Measuring according to 5.2 ° As type test on 3 slats ° Once per day for each size produced by each production line with a minimum of once per 100 slats 2 Shape of the gaps, flatness Conformity with 4.3.1.3 and 4.3.1.4 Measuring according to 5.2 ° As type test on 3 slats ° Once per day for each size produced by each production line with a minimum of once per 100 slats 3 Surface characteristics Conformity with 4.3.2 Visual inspection Daily 4 Water absorption of concrete Conformity with 4.3.4.1.2 Testing according to 5.5 on 2 specimens cut from a slat ° As type test on 3 slats ° Once per three months for each concrete type ° Inspection with covermeter ° Once per week on 1 slat for each size produced 5 Concrete cover Conformity with 4.3.4.2 ° Measuring on a slat or on a specimen cut from a slat ° Once per month for each size produced
EN 12737:2004+A1:2007 (E) 16 Annex B (normative)
Acceptance testing of a consignment at delivery B.1 General This annex gives specifications for an acceptance testing of a consignment at delivery by a second party (purchaser or his representative) or third party (inspection body). Acceptance testing shall be concerned with checking: the appearance of the floor slats; the geometrical characteristics of the floor slats; the mechanical performances of the floor slats (see 4.2.3 and 4.3.3); the water absorption of the concrete. The checks shall be conducted successively for each characteristic in the sequence listed above, and the verification shall be performed with the method specified in this document. In the event of the consignment being rejected for failure to conform to a stipulated characteristic, the remaining check(s) shall not be performed. The sampling plans to be used are given in Table B.1 Table B.1 — Sampling plans for receiving inspection Non-certified products Certified products Characteristic (Table B.2) (Table B.3) Appearance B E Geometrical characteristics A D Mechanical performances (see 4.2.3 and 4.3.3) C F Water absorption C F NOTE The sampling plans, based on ISO 2859-1, should be used for an inspection of continuous series of batches. For an inspection of isolated batches ISO 2859-2 should be used.
EN 12737:2004+A1:2007 (E) 17 B.2 Non-certified products If non-certified products are submitted to acceptance testing, the assessment of conformity of the consignment shall be conducted in accordance with the sampling and acceptance plans given in Tables B.2 and B.3. Table B.2 — Sampling plans for non-certified products Sampling plan Batch size 1st sample size Acceptance number Rejection number 2nd sample size Acceptance number Rejection number A 2 - 25 26 - 50 3 3 0 0 1 1 - - - - - - B 2 - 25 26 - 50 3 5 0 0 1 2 - 5 - 1 - 2 C 2 - 25 26 - 50 2 2 0 0 1 1 - - - - - - NOTE The sampling plans are based on ISO 2859-1, general inspection level I (for plans A and C) and II (for plan B), normal (for plans A and B) and reduced (for plan C) inspection, acceptable quality level 4,0 %. B.3 Certified products When the products are certified, acceptance testing is normally not performed, except on labelling. However, if the purchaser requests for an acceptance testing (of which he bears the expenses when conformity of the consignment is demonstrated), it shall be conducted in accordance with the sampling and acceptance plans given in Tables B.1 and B.3. Table B.3 — Sampling plans for certified products Sampling plan Batch size Sample size Acceptance number Rejection number D 2 - 50 3 0 1 E 2 - 50 3 0 1 F 2 - 50 2 0 1 NOTE The sampling plans are based on ISO 2859-1, special inspection level S-3 (for plans D and F) and S-4 (for plan E), normal (for plans D and E) and reduced (for plan F) inspection, acceptable quality level 4,0 %.
EN 12737:2004+A1:2007 (E) 18 Annex Y (informative)
!!!!Choice of CE marking method Y.1 General The producer should choose to apply, for CE marking, one of the methods described in ZA.3, on the basis of the following conditions. Y.2 Method 1 The declaration of geometrical data and material properties as specified in ZA.3.2 may be applied when the following condition occurs: off the shelf and catalogue products. Y.3 Method 2 The declaration of product properties determined following this standard and EN Eurocodes, as specified in ZA.3.3, should be applied when the following condition occurs: precast product with product properties declared by the producer. Y.4 Method 3 The declaration of compliance with a given specification as specified in ZA.3.4 may be applied when the following condition occurs: all other cases than Y.2 and Y.3."
EN 12737:2004+A1:2007 (E) 19 Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 89/109/EEC, EU Construction Products Directive ZA.1 Scope and relevant characteristics This European Standard has been prepared under the mandate M/100"Precast Concrete Products"1given to CEN by the European Commission and the European Free Trade Association The clauses of this European Standard shown in this annex meet the requirements of the mandate given under the EU Construction Products Directive (89/106/EEC). Compliance with these clauses confers a presumption of fitness of the floor slats covered by this annex for the intended uses indicated herein; reference sha
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