EN 40-3-1:2013

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lichtmaste - Bemessung und Nachweis - Teil 3-1: Charakteristische Werte der LastenCandélabres d'éclairage public - Conception et vérification - Partie 3-1: Spécification pour charges caractéristiquesLighting columns - Design and verification - Part 3-1: Specification for characteristic loads93.080.40Street lighting and related equipment91.160.20Zunanja razsvetljava stavbExterior building lightingICS:Ta slovenski standard je istoveten z:EN 40-3-1:2013SIST EN 40-3-1:2013en,fr,de01-maj-2013SIST EN 40-3-1:2013SLOVENSKI
STANDARDSIST EN 40-3-1:20011DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 40-3-1
February 2013 ICS 93.080.40 Supersedes EN 40-3-1:2000English Version
Lighting columns - Part 3-1: Design and verification - Specification for characteristic loads
Candélabres d'éclairage public - Partie 3-1: Conception et vérification - Spécification pour charges caractéristiques
Lichtmaste - Teil 3-1: Bemessung und Nachweis - Charakteristische Werte der Lasten This European Standard was approved by CEN on 25 November 2012.
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.
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National wind and meteorological information . 14 Bibliography . 15
Scope This European Standard specifies design loads for lighting columns. It applies to lighting columns of nominal height (including any bracket) not exceeding 20 m. Special structural designs to permit the attachment of signs, overhead wires, etc. are not covered by this European Standard. The requirements for lighting columns made from materials other than concrete, steel, aluminium or fibre reinforced polymer composite (for example wood, plastic and cast iron) are not specifically covered in this standard. Fibre reinforced polymer composite lighting columns are covered in this document, in conjunction with Annex B of EN 40-7:2002. This European Standard includes performance requirements for horizontal loads due to wind. Passive safety and the behaviour of a lighting column under the impact of a vehicle are not addressed. Such lighting columns will have additional requirements (see EN 12767). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 40-1:1991, Lighting columns — Part 1: Definitions and terms EN 1990, Eurocode — Basis of structural design EN 1991-1-4:2005, Eurocode 1: Actions on structures — Part 1-4: General actions — Wind actions 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 40-1:1991 apply. 4 Symbols The following symbols are used in this European Standard. The definitions are abbreviated, the full definitions being given in the text.
Ab Projected area of section bracket being considered Ac Projected area of section of column shaft being considered Al Projected area of the luminaire c Shape coefficient CALT Altitude Factor ce(z)
Exposure coefficient Cs Probability factor
cr(z) Roughness Factor
D Diameter or distance across flats f Topography factor Fb Partial horizontal force on section of bracket being considered SIST EN 40-3-1:2013

p Design annual probability of exceedence q(10) Reference wind pressure q(z) Characteristic wind pressure r Radius of corner Re Reynolds number T Period of vibration V Wind speed v Kinematic viscosity of air Vref 10 minute mean wind velocity at 10 m above ground level for terrain category II Vref,o basic value of the reference wind velocity at 10 m above sea level z Height above ground
zmin Is the minimum length defined in Table 3 Zo Is the roughness length β Factor for the dynamic behaviour δ Factor for column size
ρ Air density 5 Basis of loads 5.1 Dead loads In addition to the selfweight of the lighting column, the weights of the brackets and the luminaires shall also be taken into consideration. 5.2
Wind pressures 5.2.1
General The characteristic wind pressure q(z), in N/m2, for any particular height above the ground, z, shall be obtained from the following formula: q(z) = δ× β× f×ce(z)×q(10) (1) where q(10) given in 5.2.2, is the reference wind pressure. δ given in 5.2.3, is a factor related to the column size. β given in 5.2.4, is a factor dependent on the dynamic behaviour of the column. f given in 5.2.5, is a factor related to topography. ce(z) given in 5.2.6, is a factor dependent on the terrain of the site and the height above the ground, z. NOTE 1 q(10), f and ce(z), are based on the principles given in EN 1991-1-4. SIST EN 40-3-1:2013

5.2.2
Reference wind pressure q(10) The value of q(10) (in N/m²) accounts for the geographical location of the lighting column. It is derived from the reference wind velocity Vref (in m/s) using the following formula: q(10) = 0,5×ρ×(Cs)2×Vref2 (2) where Vref is the 10 minute mean wind velocity at 10 m above ground level for terrain category II (see Table 1) having an annual probability of exceedence of 0,02 (commonly referred to as having a mean return period of 50 years).
Vref = CALT Vref,0 Vref,o is the basic value of the reference wind velocity at 10 m above sea level obtained from the wind maps referred to in Annex A; CALT is an altitude factor to be taken as 1,0 unless otherwise recommended in the National Annex to EN 1991-1-4
is the air density. The air density is affected by altitude and depends on the temperature and pressure to be expected at the site location during wind storms. The kg/m3, unless otherwise recommended in the National Annex to EN 1991-1-4. Cs is a factor to convert Vref from an annual probability of exceedence of 0,02 to other probabilities, and can be derived from the formula given in Annex A. For lighting columns the normal requirement is for a mean return period of 25 years, for which the factor Cs should be taken as .,920 5.2.3
Factor for column size δ The greater the size of a surface subject to wind, the more unlikely it is that the maximum pressure, on which the calculation is based, acts over its full area. The resultant smaller wind load on a component is taken into account by the factor δ dependent on the size of the area. The ruling dimension for the size of the area subject to the wind is the greatest dimension in one direction. For a lighting column, this is the nominal height in metres. The value of the factor δ shall be obtained from the formula: δ = 1 - 0,01 h 5.2.4
Factor for the dynamic behaviour of lighting columns, β The factor β is dependent upon the basic period of vibration T and the damping of the "column/luminaire" system and takes into account the increase in the load, resulting from the dynamic behaviour of the lighting column, caused by wind gusts.
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