EN 1520:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prefabricated reinforced components of lightweight aggregate concrete with open structureArmirani montažni elementi iz betona iz lahkega agregata z odprto strukturoProduits préfabriqués armés en béton de granulats légers a structure ouverteVorgefertigte bewehrte Bauteile aus haufwerksporigem Leichtbeton91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:SIST EN 1520:2003enTa slovenski standard je istoveten z:EN 1520:200201-julij-2003SIST EN 1520:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1520November 2002ICS 91.100.30English versionPrefabricated reinforced components of lightweight aggregateconcrete with open structureProduits préfabriqués armés en béton de granulats légers àstructure ouverteVorgefertigte bewehrte Bauteile aus haufwerksporigemLeichtbetonThis European Standard was approved by CEN on 16 October 2002.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1520:2002 E

Evaluation by calculation.52A.1General.52A.2Partial safety factors.52A.3Ultimate limit state - Design for bending and combined bending and axial compression.52A.3.1Design assumptions.52A.3.2Stress-strain diagram for LAC.53A.3.3Stress-strain diagram for reinforcing steel.54A.4Ultimate limit state - Design for shear.56A.4.1Shear design for components under predominantly transverse load, e.g. roof and floorcomponents and beams.56A.4.2Shear design for components under predominantly centric or eccentric axial compressionforces, e.g. walls and piers.57A.5Ultimate limit state - Design for centric and eccentric axial compression forces.57A.6Serviceability limit states.58A.6.1Serviceability limit state of cracking.58A.6.2Serviceability limit state of deformation.59A.7Components requirements.59A.7.1Roof and floor components.59

Evaluation by testing.64B.1General.64B.2Safety evaluation.64B.2.1General.64B.2.2Brittle and ductile failure.64B.2.3Partial safety factors.65B.3Ultimate limit states.65B.3.1General.65B.3.2Transversely loaded components.65B.3.3Longitudinally loaded components.67B.3.4Simultaneously transversely and longitudinally loaded components.68B.4Serviceability limit states.69B.4.1Elastic deformations.69B.4.2Time dependent deformations.69Annex C (informative)
Partial safety factors (Example).70C.1Ultimate limit states (ULS).70C.2Serviceability limit states (SLS).70Annex ZA (informative)
Provisions for the CE marking of prefabricated reinforced components oflightweight aggregate concrete with open structure under the EC Construction ProductDirective.71Bibliography.85FiguresFigure 1 — Determination of dry thermal conductivity ll10dry.25Figure 2 — Examples of solid slab (a), hollow core slab (b) and multilayer slab (c)
(with respect totransverse reinforcement, see 5.4.2).33Figure 3 — Anchorage of smooth reinforcing bars.34Figure 4 — Anchorage of ribbed reinforcing bars.34Figure 5 — Limits of slenderness ratio S of loadbearing walls and piers.37Figure A.1 — Bi-linear stress-strain diagram for LAC in compression for cross-sectional of design.54Figure A.2 — Design stress-strain diagram for reinforcing steel.55Figure A.3 — Strain diagrams in the ultimate limit state.55Figure A.4 — Distribution of concentrated load.60Figure B.1 — Definition of shear span ls.66Figure B.2 — Simplified N/M interaction diagram of the cross-section, representing results
of three testseries.69TablesTable 1 — Tolerances on declared mean value of dry density of LAC.19Table 2 — Density classes of LAC.19Table 3 — Determination of the characteristic strength fk and required minimum strength fmin.19Table 4 — Statistical coefficient Kn for determination of characteristic strength.20

for evaluation of final drying shrinkage of LAC.23Table 10 — Final creep coefficient jj0(¥,t0) of normal weight concrete.24Table 11 — Coefficient hh4 for evaluation of the final creep coefficient of LAC.24Table 12 — Dry thermal conductivity ll10dry of LAC for 50% and 90% of production, with a confidence levelgg = 90 % (compiled according to EN 1745).26Table 13 — Basic values for moisture content and moisture conversion coefficient of LAC
(compiledaccording to EN 12524).27Table 14 — Types of components.29Table 15 — Maximum permissible deviation from squareness in the plane of components.30Table 16 — Limits of reinforcement in roof and floor components in the case of evaluation by calculation(plain steel, with fyk £ 220 MPa).Error! Bookmark not defined.Table 17 — Minimum concrete cover if corrosion protection is achieved by embedding the bars in con-crete with closed structure.39Table 18 — Initial type-testing of the components.44Table 19 — Factory production control, testing of the finished product, LAC components for structuraluses.45Table 20 — Factory production control, testing of the finished product, LAC components for non-loadbearing uses.47Table A.1 — Required dimensions of beams without verification of loadbearing capacity.62Table C.1 — Partial safety factors ggM for material properties.70Table C.2 — Partial safety factors ggcomp for components.70Table ZA.1a — Harmonised clauses for loadbearing wall components.72Table ZA.1b — Harmonised clauses for retaining wall components.73Table ZA.1c — Harmonised clauses for roof components.74Table ZA.1d — Harmonised clauses for floor components.75Table ZA.1e — Harmonised clauses for linear components.76Table ZA.1f — Harmonised clauses for non-loadbearing wall components.77Table ZA.1g — Harmonised clauses for cladding components.78Table ZA.1h — Harmonised clauses for small box culvert components.79
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