EN 13224:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Betonfertigteile - Deckenplatten mit StegenProduits préfabriqués en béton - Éléments de plancher nervurésPrecast concrete products - Ribbed floor elements91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:Ta slovenski standard je istoveten z:EN 13224:2004SIST EN 13224:2004en,fr,de01-oktober-2004SIST EN 13224:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13224August 2004ICS 91.100.30 English versionPrecast concrete products - Ribbed floor elementsProduits préfabriqués en béton - Éléments de planchernervurésBetonfertigteile - Deckenplatten mit StegenThis European Standard was approved by CEN on 24 June 2004.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13224:2004: ESIST EN 13224:2004

2 Contents The numbering of clauses is strictly related to EN 13369, Common rules for precast concrete products, at least for the first three digits. When a clause of EN 13369 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.4 Introduction.6 1 Scope.7 2 Normative references.7 3 Terms, definitions, and symbols.7 3.1 Terms and definitions.7 4 Requirements.7 4.1 Material requirements.7 4.2 Production requirements.8 4.3 Finished product requirements.8 4.3.1 Geometrical properties.8 4.3.2 Surface characteristics.9 4.3.3 Mechanical resistance.9 4.3.4 Resistance and reaction to fire.10 4.3.5 Acoustic properties.10 4.3.6 Thermal properties.10 4.3.7 Durability.10 4.3.8 Other requirements.11 5 Test methods.11 5.1 Tests on concrete.11 5.2 Measuring of dimensions and surface characteristics.11 6 Evaluation of conformity.11 6.1 General.11 6.2 Type testing.11 6.3 Factory production control.11 7 Marking and labelling.12 8 Technical documentation.12 Annex A (informative)
Examples of elements.13 Annex B (normative)
Minor floor elements.14 B.1 General.14 B.2 Additional requirements for Minor Floor Elements.14 B.2.1 General.14 B.2.2 Dimensions.14 B.2.3 Minimum strength of concrete.15 B.3 Special rules for Minor Floor Elements.15 B.3.1 Bearing length.15 B.3.2 Transverse load distribution.15 B.3.3 Detailing.16 Annex C (informative)
Unintended negative moments.18 Annex D (informative)
Thermal maps.20 SIST EN 13224:2004

Transverse load distribution.24 Annex F (informative)
Diaphragm action.25 Annex Y (informative)
Choice of CE marking method.26 Y.1 General.26 Y.1 Method 1.26 Y.2 Method 2.26 Y.3 Method 3.26 Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or other provisions of EU Directives.27 ZA.1 Scope and relevant characteristics.27 ZA.2 Procedure for attestation of conformity of precast ribbed floor elements.28 ZA.2.1 System of attestation of conformity.28 ZA.2.2 EC Certificate and Declaration of conformity.29 ZA.3 CE marking and labelling.30 ZA.3.1 General.30 ZA.3.2 Declaration of geometrical data and material properties.31 ZA.3.3 Declaration of product properties.33 ZA.3.4 Declaration of compliance with a given design specification.36 Bibliography.38
4 Foreword This document (EN 13224:2004) has been prepared by Technical Committee CEN/TC 229 “Precast concrete 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 February 2005, and conflicting national standards shall be withdrawn at the latest by February 2007. 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 Construction Products Directive (89/106/EEC) of European Union (EU). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This standard is one of a series of product standards for precast concrete products For common aspects reference is made to EN 13369: Common rules for precast products, from which also the relevant requirements of the EN 206-1: Concrete - Part 1: Specification, performances, production and conformity are taken. The references to EN 13369 by CEN/TC229 product standards are intended to make them homogeneous and to avoid repetitions of similar requirements. Eurocodes are taken as a common reference for design aspects. The installation of some structural precast concrete products is dealt with by ENV 13670-1: Execution of concrete structures – Part 1: Common rules, which has at the moment the status of an European prestandard. In all countries it can be accompanied by alternatives for national application and it shall not be treated as a European Standard. The programme of standards for structural precast concrete products comprises the following standards, in some cases consisting of several parts:  EN 1168, Precast concrete products - Hollow core slabs  prEN 12794, Precast concrete products - Foundation piles  EN 12843, Precast concrete products - Masts and poles  EN 13224, Precast concrete products - Ribbed floor elements  EN 13225, Precast concrete products - Linear structural elements  EN 13693, Precast concrete products - Special roof elements  prEN 13747, Precast concrete products - Floor plates for floor systems  prEN 13978, Precast concrete products - Precast concrete garages  prEN 14843, Precast concrete products – Stairs  prEN 14844, Precast concrete products - Box culverts  prEN 14991, Precast concrete products - Foundation elements  prEN 14992, Precast concrete products - Wall elements: Products properties and performances SIST EN 13224:2004

6 Introduction The evaluation of conformity given in this standard refers to the completed precast elements which are supplied to the market and covers all the production operations carried out in the factory. For design rules and resistance to fire reference is made to EN 1992-1-1 and EN 1992-1-2. Additional complementary rules are provided where necessary. Clauses 4.3.3 and 4.3.4 of this document includes specific provisions resulting from the application of EN 1992-1-1, and EN 1992-1-2 rules made specific for the concerned product. The use of these provisions is consistent with a design of works made with EN 1992-1-1 and EN 1992-1-2. SIST EN 13224:2004

1-2: General rules - Structural fire design. EN 13369:2004, Common rules for precast concrete products. 3 Terms, definitions, and symbols 3.1 Terms and definitions For the purpose of this document, the definitions given in EN 1992-1-1:2004 and EN 13369:2004 and the following apply. 3.1.1 ribbed precast concrete element precast unit consisting in a slab stiffened by one or more ribs 3.1.2 minor floor element ribbed precast floor elements having limited dimensions, which are in compliance with the normative Annex B 4 Requirements NOTE Requirements for minor floor elements are listed in the Annex B. 4.1 Material requirements For general aspects, constituent materials of concrete, reinforcing and prestressing steel, inserts and connectors, the relevant clauses of EN 13369:2004 4.1 shall apply. In particular the ultimate tensile and tensile yield strength of steel shall be considered. SIST EN 13224:2004

8 4.2 Production requirements The production of precast ribbed elements shall comply with the requirements in EN 13369:2004, Clause 4.2. NOTE In addition to Clause 4.2.2 of EN 13369:2004, for cast-in-situ concrete considered to act compositely with precast units in the structural resistance (e.g. structural toplayer), the minimum strength class is C 20/25. In particular the compressive strength of concrete shall be considered. For minor floor elements, strength classes shall comply with B.2.3. 4.3 Finished product requirements 4.3.1 Geometrical properties 4.3.1.1 Production tolerances Complementary to Clause 4.3.1.1 of EN 13369:2004 the following tolerance shall apply (Figure 1).
Figure 1 — Reference points for standard check of tolerances DIMENSION PERMITTED DEVIATION
(mm) Skewness () ± 15 Lateral bow (0) ± 10 or L/1 000 (whichever is greater) Planarity
± 15 Angular deviation of ribs (/) ± 15 Methods of measurements are given in 5.2. For prestressed elements the values of tolerance in lateral bow (0) and angular deviation of ribs (/) can be increased by 50 %; this includes the effect of prestressing tolerances. The differences in camber or sag, with respect to the declared value, shall be not greater than L/500. SIST EN 13224:2004

10 4.3.3.3 Shear and negative moments In elements without shear reinforcement, negative moments and unintended restraining effects at the supports should be considered in the design of the elements and in the detailing of the connections at the supports in order to prevent possible restraint cracks which can initiate shear failure near the support. Two methods to deal with negative or unintended fixing moments are applicable:  detailing the connection in such a way that these negative moments will not occur;  design by calculations. Design methods to consider negative or unintended moments are given in Annex C. 4.3.3.4 Longitudinal shear Clause 6.2.4 of EN 1992-1-1 shall apply. If the composite action with a cast on site topping is considered, the producer shall declare the type of roughness of the surface according to clause 6.2.5 of EN 1992-1-1. 4.3.3.5 Bearing system The bearing system shall allow the longitudinal shortening of elements. NOTE Soft pads designed according to the actual support conditions are usually suitable. Full restraint supports of prestressed elements at both ends (for instance by welding) should be avoided unless the effect of restrained deformations is carefully taken into account. 4.3.4 Resistance and reaction to fire 4.3.4.1 Resistance to fire Fire resistance dealing with loadbearing capacity R, integrity E and insulation I of ribbed floor elements, expressed in terms of classes, shall be declared following 4.3.4.1, 4.3.4.2 and 4.3.4.3. of EN 13369:2004. Load bearing classification R by calculation may be carried out using the thermal maps given in Annex D. Load bearing classification R by tabulated data may be made on the basis of data given in EN 1992-1-2 using beam data for the ribs and slab data for the slab, respectively. NOTE If the option of tabulated data is selected, as they do not take into account the actual position of the reinforcement nor the actual load level, they usually lead to an over dimensioning of the cross section. 4.3.4.2 Reaction to fire For reaction to fire, Clause 4.3.4.4 of EN 13369:2004 shall apply. 4.3.5 Acoustic properties Clause 4.3.5 of EN 13369:2004 shall apply. 4.3.6 Thermal properties Clause 4.3.6 of EN 13369:2004 shall apply. 4.3.7 Durability Clause 4.3.7 of EN 13369:2004 shall apply. SIST EN 13224:2004

12 Clause 6.3 of EN 13369:2004, shall apply. 6.3.6.5 Finished products In addition to items 3 to 5 of D.4.1 of table D.4 of EN 13369:2004, the check of Table 1 shall be performed. Table 1 — Finished product inspection Subject Method Purpose Frequency Dimensions See Clause 5.2 Conformity with drawings and specified tolerances 1 every 10 elements or 1 every casting line Camber or sag
Skewness Lateral bow Planarity Angle deviation of the rib See Clause 5.2 Conformity with drawings and specified tolerances Every month Slippage of tendons Appropriated check /measurement Conformity with Clause 4.2.3.2.4 of EN 13369:2004. Only if release is not gradual Surface appearance
Visual inspection In case of doubt, check according Annex J4 of EN 13369:2004 Conformity with specified tolerances Every element 7 Marking and labelling Clause 7 of EN 13369:2004 shall apply. NOTE For CE marking see Annex ZA. 8 Technical documentation The detailing of the element, with respect to geometrical data and complementary properties of materials and inserts, shall be given in technical documentation, which includes the construction data, such as the dimensions, the tolerances, the layout of reinforcement, the concrete cover, the surface characteristics (when relevant), the expected transient and final support conditions and lifting conditions. The composition of technical documentation is given in Clause 8 of EN 13369:2004. SIST EN 13224:2004

Examples of elements Some examples of cross-sections of precast elements considered in this document are shown in Figure A.1. The elements can be simply supported, or connected longitudinally on or with the beams, achieving total or partial continuity. They also can be designed with half joints at the ends, in order to reduce the total thickness. According to the different situations, the elements can be: a) placed on site without transversal connections, eventually supporting secondary elements between them (isolated members); b) provided with steel plates at their lateral edges to be connected together at their top flanges by welded shear connectors; c) shaped in form of shear keys at their lateral edges to be connected together by
cast in situ shear joints, and/or be provided with steel plates for welded connections on site; d) provided with a cast in situ reinforced concrete topping. Such topping, if effectively restrained to the precast elements by bond, with or without steel reinforcement projecting from the elements, may be taken into account in the resistant section. Combinations of the preceding cases are also possible. According to the different arrangement of connections, the elements can be:  able to act as a diaphragm in order to transfer horizontal forces to the bracing elements (cases b, c, d and a if the secondary elements are adequately connected).  able to transfer vertical shear from heavier loaded elements to the surrounding ones (cases c, d and b if the welded connection is arranged in an appropriate way).
a)
b)
c)
d)
e)
f)
g) Figure A.1 — Examples of some forms of ribbed floor elements SIST EN 13224:2004

14 Annex B (normative)
Minor floor elements B.1 General In view of their use as specified in B.2.1, minor floor elements may be designed in the lower consequences class of Clause B.3.1 of EN 1990:2002. In this case they shall be in compliance with the additional requirements and special rules of this annex. Design, production and application of Minor Floor Elements, according to these special rules, is only allowed if manufacturing takes place under strict production control.
B.2 Additional requirements for Minor Floor Elements B.2.1 General Minor Floor Elements are ribbed precast floor elements with limited dimensions, used only for a suspended floor with a maximum below air space of 1 000 mm between the floor and the ground, which are in compliance with the additional requirements of paragraph B.2.2 and B.2.3. NOTE According to consequences classes stated in B.3.1 of 1990:2002, taking into account the use stated above, some special design rules are given for these products. Examples of some forms of Minor floor elements are given in Figure B.1.
Figure B.1 — Possible forms of Minor Floor Elements
B.2.2 Dimensions Minor floor elements shall comply with the following dimensions (referred to the concrete-element, without thermal insulation): span of the elements ≤ 8 000 mm height of the elements ≤ 400 mm width of the ribs ≥ 60 mm spacing between ribs ≤ 1 200 mm thickness of the slab: SIST EN 13224:2004
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