EN 1520:2011

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Armirani montažni elementi iz betona iz lahkega agregata z odprto strukturoVorgefertigte bewehrte Bauteile aus haufwerksporigem LeichtbetonComposants préfabriqués en béton de granulats légers à structure ouverte avec des armatures structurales et non-structuralesPrefabricated reinforced components of lightweight aggregate concrete with open structure91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:Ta slovenski standard je istoveten z:EN 1520:2011SIST EN 1520:2011en,de01-junij-2011SIST EN 1520:2011SLOVENSKI
STANDARDSIST EN 1520:2003/AC:2003SIST EN 1520:20031DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1520
March 2011 ICS 91.100.30 Supersedes EN 1520:2002English Version
Prefabricated reinforced components of lightweight aggregate concrete with open structure with structural or non-structural reinforcement
Composants préfabriqués en béton de granulats légers à structure ouverte avec des armatures structurales et non-structurales
Vorgefertigte Bauteile aus haufwerksporigem Leichtbeton und mit statisch anrechenbarer oder nicht anrechenbarer Bewehrung This European Standard was approved by CEN on 5 February 2011.
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-CENELEC 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-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1520:2011: ESIST EN 1520:2011

Design of components by calculation . 53Annex B (informative)
Design of components by testing . 81Annex C (informative)
Recommended values for partial safety factor . 87Annex ZA (informative)
Provisions for the CE marking of prefabricated components of lightweight aggregate concrete with open structure with structural or non-structural reinforcement under the EU Construction Product Directive . 88Bibliography . 109 SIST EN 1520:2011

(With respect to transverse reinforcement, see 5.4.2.1) .34Figure 3 — Support length a0.35Figure 4 — Basic design of hollow core wall components .36Figure A.1 — Bi-linear stress-strain diagram for LAC in compression for cross-sectional design .55Figure A.2 — Design stress-strain diagram for reinforcement steel .56Figure A.3 — Possible strain diagrams in the ultimate limit state .56Figure A.4 — Limits of slenderness ratio S of loadbearing walls and piers .62Figure A.5 — Design loads for cellar walls .67Figure A.6 — Additional horizontal force Hfd due to inclination of the components and effects of second order theory .72Figure A.7 — Tensile splitting forces in wall components with oversail s .73Figure A.8 — Tensile splitting forces at the top of a hollow core wall component. .74Figure A.9 —Tensile splitting force T due to centric loading .75Figure A.10 — Anchorage of smooth reinforcing bars .79Figure A.11 — Anchorage of ribbed reinforcing bars .79Figure B.1 — Definition of shear span ls .83Figure B.2 — Simplified Ν/Μ interaction diagram of the cross-section, representing results of three test series .86Figure ZA 1 – Example of CE marking with Method 1 .101Figure ZA 2 – Example of CE marking with Method 2 .103Figure ZA.3 – Example of CE marking with Method 3a .105Figure ZA.4 – Example of CE marking with Method 3b .107Figure ZA.5 — Example of simplified label .108Tables
Table 1 — Tolerances on declared mean dry density of LAC .20Table 2 — Density classes of LAC .21Table 3 — Determination of the characteristic strength fk and required minimum strength fmin .21Table 4 — Statistical coefficient Kn for determination of characteristic strength .22Table 5 — Reduction factors for compressive strength of cores with indicated diameter and equal length of cubes .22SIST EN 1520:2011

(compiled according to EN ISO 10456) . 29Table 10 — Types of components . 30Table 11 — Maximum permissible deviation from squareness in the plane of components . 32Table 12 — Minimum percentage of reinforcement R . 33Table 13 — Description of permissible exposure classes with respect to risk of reinforcement corrosion . 37Table 14 — Embedding in a zone of normal concrete or LC-concrete with closed structure -
Minimum concrete cover in mm . 38Table 15 — Minimum concrete cover in mm for hot dip galvanized reinforcement steel . 39Table 16 — Minimum concrete cover in mm with regard to durability and test method to pass by initial type-test and FPC for bars with a corrosion protective coating . 40Table 17 — Initial type-testing of the LAC components . 45Table 18 — Factory production control, testing of the finished product
LAC components for structural uses . 46Table 19 — Factory production control, testing of the finished product, LAC components for non-loadbearing uses . 48Table A.1 — Minimum percentages of shear reinforcement w,min for reinforcement steel with fyk= 500 MPa . 60Table A.2 — Coefficient
for the determination of the buckling length l0 at different boundary conditions (used in Equation (A. 25), l0 = ·lw) . 64Table A.3 — Required dimensions of beams without verification of loadbearing capacity . 71Table A.3 — Limits of reinforcement in roof and floor components for design by calculation
(plain steel, with characteristic yield strength fyk ≤ 220 MPa) . 78Table C.1 — Partial safety factors γM for material properties . 87Table C.2 — Partial safety factors γcomp for components . 87Table ZA.1a — Harmonised clauses for loadbearing wall components . 89Table ZA.1b — Harmonised clauses for retaining wall components . 90Table ZA.1c — Harmonised clauses for roof components . 91Table ZA.1d — Harmonised clauses for floor components . 92Table ZA.1e — Harmonised clauses for linear components . 93Table ZA.1f — Harmonised clauses for non-loadbearing wall components . 94Table ZA.1g — Harmonised clauses for cladding components . 95SIST EN 1520:2011

(for non structural or light structural components) under System 4.98 SIST EN 1520:2011

Regulatory classes are only given for "Reaction to fire" and "Resistance to fire". All other classes used in this European Standard, i.e. density classes and strength classes, are technical classes. SIST EN 1520:2011

for non-structural elements:  non-loadbearing wall components (e.g. for partition walls);  cladding components (without fixtures) intended to be used for external facades of buildings;  small box culverts used to form channels for the enclosure of services;  components for noise barriers. NOTE 1 In addition to their loadbearing and encasing function, components can also be used to provide fire resistance, sound insulation and thermal insulation. Components covered by this European Standard are only intended to be subjected to predominantly non-dynamic actions, unless special measures are introduced in the relevant clauses of this European Standard. The term "reinforced" relates to reinforcement used for both structural and non-structural purposes. This European Standard does not cover:  rules for the application of these components in structures;  joints (except their strength);  fixtures;  finishes for external components, such as tiling. NOTE 2 LAC components can be used in noise barriers if they are designed to fulfil also the requirements of EN 14388. 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 206-1:2000, Concrete — Part 1: Specification, performance, production and conformity EN 990, Test methods for verification of corrosion protection of reinforcement in autoclaved aerated concrete and lightweight aggregate concrete with open structure EN 991, Determination of the dimension of prefabricated reinforced components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure SIST EN 1520:2011

(ISO 6892-1:2009) EN ISO 6946, Building components and building elements — Thermal resistance and thermal transmittance — Calculation method (ISO 6946:2007) EN ISO 10456, Building materials and products — Hygrothermal properties — Tabulated design values and procedures for determining declared and design thermal values (ISO 10456:2007) EN ISO 12572, Hygrothermal performance of building materials and products — Determination of water vapour transmission properties (ISO 12572:2001) EN ISO 15148, Hygrothermal performance of building materials and products — Determination of water absorption coefficient by partial immersion (ISO 15148:2002) ISO 80000-1, Quantities and units — Part 1: General SIST EN 1520:2011

LWA aggregate of mineral origin having a particle density not exceeding 2 000 kg/m3 (2,00 Mg/m3) or a loose bulk density not exceeding 1 200 kg/m3 (1,20 Mg/m3) 3.1.2 lightweight aggregate concrete LAC concrete with an open structure having an oven-dry density of not more than 2 000 kg/m3 and made with aggregates consisting entirely or partly of lightweight aggregates (LWA) 3.1.3 loadbearing component component which carries permanent, variable or accidental actions NOTE Components exposed mainly to wind loads or acting as part of fire resisting walls are considered to be loadbearing. 3.1.4 non loadbearing component component that mainly supports its own weight and does not contribute to the stability of the works 3.2 Symbols 3.2.1 General symbols A area b width of component d effective depth of cross-section E modulus of elasticity e eccentricity f strength h overall depth or thickness of cross-section or of component I moment of inertia i radius of inertia k coefficient, factor l length, height of wall component, span length of a roof or floor component M bending moment N axial compression force t time V shear force SIST EN 1520:2011

width of the vertical solid web of hollow core components (Figure 4) bw minimum width of the section over the effective depth, minimum width of the section in the compression zone CRd parameter for shear capacity cd concrete cover d effective thickness of a cross-section Ecm mean value of the modulus of elasticity of LAC Ered
=0,6Ecm reduced modulus of elasticity of LAC taking into account the effects of creep Es modulus of elasticity of reinforcement steel e basis of natural logarithm (= 2,718) ea additional eccentricity of the longitudinal action due to geometrical imperfections ec additional eccentricity due to creep eg declared eccentricity at the top of a vertical component perpendicular to its plane, i.e. the eccentricity used in the operational testing em
first order eccentricity due to transverse load eN
eccentricity of the longitudinal action in the plane of the component e0 first order eccentricity of the longitudinal action etot total eccentricity of the design axial compression force Nd e1 resulting first order eccentricity of the longitudinal load perpendicular to the plane of the component, taken as the sum of e0 and ea e2 resulting second order eccentricity
fcd design
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