SIST EN 12509:2002
(Main)Timber poles for overhead lines - Test methods - Determination of modulus of elasticity, bending strength, density and moisture content
Timber poles for overhead lines - Test methods - Determination of modulus of elasticity, bending strength, density and moisture content
This European Standard specifies methods of test to determine modulus of elasticity, bending strength, density and moisture content of solid wood poles for overhead transmission and telecommunication lines. It is applicable to both hardwood and softwood poles.
This standard covers only single poles under cantilever and/or compression loading. For example, this standard does not cover poles used as beams.
The provision of poles for use in any overhead line or cable infrastructure shall take into account a range of factors not covered by this standard which will necessitate the specification by the end user of complementary and synonymous attributes to those defined in this standard. This refers to requirements for a number of factors including safety, overhead plant, handling, fittings, installation machinery and working practices including climbing.
Holzmaste für Freileitungen - Prüfverfahren - Bestimmung des Elastizitätsmoduls, der Biegefestigkeit, der Dichte und des Feuchtigkeitsgehalts
Diese Europäische Norm beschreibt Prüfverfahren zur Bestimmung des Elastizitätsmoduls, der Biegefestigkeit, der Rohdichte und des Feuchtegehalts von Vollholzmasten für Energieüber-tragungs-- und Fernmeldefreileitungen. Sie gilt für Laub- und Nadelholzmaste.
Diese Norm gilt nur für eingespannte einstielige Maste und/oder Druckbeanspruchung. Diese Norm berücksichtigt zum Beispiel nicht die Verwendung von Masten als Biegeträger.
Der Einsatz von Masten in Freileitungen, erfordert die Berücksichtigung einer Reihe von Faktoren, die in der vorliegenden Norm nicht erfaßt sind; der Betreiber kann seine speziellen Anforderungen mit ergänzenden Anforderungen zu den in der vorliegenden Norm definierten vervollständigen. Dies betrifft Anforderungen an die Sicherheit, die Freileitungsanlage, die Handhabung, das Zubehör, die Hilfsmittel für die Errichtung und an die Arbeitsvorgänge einschließlich der Mastbesteigung.
Poteaux en bois pour lignes aériennes - Méthodes d'essai - Détermination du module d'élasticité, de la résistance a la flexion, de la masse volumique et de la teneur en humidité
La présente norme spécifie des méthodes d'essai permettant de déterminer le module d'élasticité, la résistance à la flexion, la masse volumique et la teneur en humidité des poteaux en bois massif destinés aux lignes aériennes de transmission et de télécommunication. La présente norme s'applique aussi bien aux poteaux en bois feuillus qu'en bois résineux.
La présente norme s'applique uniquement aux poteaux simples soumis à une charge en porte-à-faux et/ou à une charge en compression. La présente norme ne concerne pas les poteaux utilisés comme poutres, par exemple.
Lors de l'utilisation de poteaux en bois pour un usage au sein de toute infrastructure aérienne de lignes ou de câbles, il est nécessaire de prendre en compte une série de facteurs sortant du domaine d'application de la présente norme, et nécessitant de la part de l'acheteur final, la spécification de prescriptions supplémentaires et synonymes de celles qui sont définies dans la présente norme. Cette nécessité a trait aux prescriptions de conformité à l'égard d'un certain nombre de facteurs relatifs à la sécurité, aux installations aériennes, à la manutention, aux équipements, aux machines d'installation et aux pratiques d'usage, y compris l'escalade.
Leseni drogovi za nadzemne vode - Preskusni postopki - Ugotavljanje modula elastičnosti, upogibne trdnosti, gostote in vlage
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Holzmaste für Freileitungen - Prüfverfahren - Bestimmung des Elastizitätsmoduls, der Biegefestigkeit, der Dichte und des FeuchtigkeitsgehaltsPoteaux en bois pour lignes aériennes - Méthodes d'essai - Détermination du module d'élasticité, de la résistance a la flexion, de la masse volumique et de la teneur en humiditéTimber poles for overhead lines - Test methods - Determination of modulus of elasticity, bending strength, density and moisture content79.080Polizdelki iz lesaSemi-manufactures of timber29.240.20DaljnovodiPower transmission and distribution linesICS:Ta slovenski standard je istoveten z:EN 12509:2001SIST EN 12509:2002en01-julij-2002SIST EN 12509:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12509November 2001ICS 29.240.20; 79.080English versionTimber poles for overhead lines - Test methods - Determinationof modulus of elasticity, bending strength, density and moisturecontentPoteaux en bois pour lignes aériennes - Méthodes d'essai -Détermination du module d'élasticité, de la résistance à laflexion, de la masse volumique et de la teneur en humiditéHolzmaste für Freileitungen - Prüfverfahren - Bestimmungdes Elastizitätsmoduls, der Biegefestigkeit, der Dichte unddes FeuchtigkeitsgehaltsThis European Standard was approved by CEN on 13 October 2001.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, 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© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12509:2001 ESIST EN 12509:2002
(informative)
Example of suitable cantilever bending test method.13Bibliography.14SIST EN 12509:2002
2)°C, per unit volume of undried materials3.3minimum diameterminimum diameter of the pole at the section of measurement3.4moisture contentratio of the mass of the quantity of water in a material to the mass of the dry materialSIST EN 12509:2002
In the case of creosote treated timber, moisture content may be determined in accordance with EN 212.5.2.3In the case of ultimate strength tests, the disc shall be cut as closely as possible to the fracture.5.2.4For determining the moisture content of a pole prior to treatment or test the procedures given in ISO 3130may be applied to borings taken in accordance with EN 12465:2001, annex A. The boring sample used fordetermination of moisture content shall include the full depth of sapwood or the innermost 75 mm of sapwoodwhichever is the lesser. Alternative methods of measurement, such as electrical resistance moisture meters, maybe used provided that it can be demonstrated that the measurements taken relate to measurements taken inaccordance with the above method.5.3 Determination of density5.3.1For untreated poles the dry density of the whole cross-section of the test pieces shall be determined inaccordance with the procedures given in ISO 3131 on a disc of timber cut from the poles. The disc shall be of fullcross-section, free from knots and resin pockets and shall be at least 50 mm in thickness. For poles that have beentreated, the presence or otherwise of treatment in the test piece shall be recorded.5.3.2Where separate heartwood and sapwood densities are required these should be determined fromrectangular prisms cut from appropriate regions of the disc in accordance with ISO 3131. In the case of ultimatestrength tests, the discs for determination of density shall be cut as closely as possible to the fracture.5.3.3 The bulk density of the poles shall be determined from the overall weight and volume of the pole at the timeof test. The weight shall be measured and the volume shall be determined from circumference measurementstaken at 0,5 m intervals along the length of the pole.SIST EN 12509:2002
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