ASTM_D_4923_-_01.pdf

Designation:D 4923 01Standard Specification forReinforced Thermosetting Plastic Poles1This standard is issued under the fixed designation D 4923;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers reinforced thermosetting plas-tic poles used for outdoor lighting.Such poles may beapplicable to electric power and telecommunication distribu-tion installations.1.2 The design parameters of the poles shall be agreed uponby the purchaser and supplier and should take into consider-ation the anticipated service conditions of installation andtransportation of the product.1.3 This specification includes poles with above-ground orstandard mounting height of 10 ft(3.05 m)through 50 ft(15.24m).Two classes of poles are covered,one of standard design,the other of stiff design.1.4 The values stated in inch-pound units are to be regardedas standard.Equivalent SI units are indicated in parentheses.1.5 The following precautionary caveat pertains only to thetest methods portion of this specification,Section 10:Thisstandard does not purport to address all of the safety problems,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:A 153 Specification for Zinc Coating(Hot-Dip)on Iron andSteel Hardware2C 131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the LosAngeles Machine3D 149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power Frequencies4D 257 Test Methods for D-C Resistance or Conductance ofInsulating Materials4D 635 Test Method for Rate of Burning and/or Extent andTime of Burning of Self-Supporting Plastics in a Horizon-tal Position5D 883 Terminology Relating to Plastics5E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications6E 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method62.2AASHTO Standard:Standard Specifications for Structural Supports for HighwaySigns,Luminaires and Traffic Signals,198573.Terminology3.1 Definitions:GeneralAll other terms not specificallydefined shall be in accordance with Terminology D 883.3.2 Definitions of Terms Specific to This Standard:3.2.1 anchor basea device attached to the bottom end ofa pole designed to be mounted on an accommodating platform.3.2.2 arma structural member,approximately perpendicu-lar to a pole,that supports a luminaire.3.2.3 direct buriala term used to refer to a pole designedto be supported by surrounding earth(soil).(See also 3.2.9)3.2.4 effective projected area(EPA)maximum projectedarea of an object multiplied by a drag coefficient(Cd)for thespecific shape of the object.3.2.5 flexural fatiguechange in property(ies)of a pole asinfluenced by cyclical wind loading that induces flexuralstresses and strains in the pole.3.2.6 luminairea complete lighting fixture that includeslight source,lens,reflector,housing,mounting provision,andmay include ballast.3.2.7 mounting heightthe vertical distance betweenground level and the center of the light source in a post top orarm-mounted luminaire.3.2.8 percent deflectionthe ratio(expressed in percent)ofthe pole-top deflection caused by a specific load to theabove-ground height of the pole.3.2.9 polea reinforced thermosetting plastic shaft thatincludes provisions for installing a luminaire or arm(s)and isprovided with service access and wire entry holes(if required).1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.18 on ReinforcedThermosetting Plastics.Current edition approved Feb.10,2001.Published April 2001.Originallypublished as D 4923-89.Last previous edition D 4923-92.2Annual Book of ASTM Standards,Vol 01.06.3Annual Book of ASTM Standards,Vol 04.02.4Annual Book of ASTM Standards,Vol 10.01.5Annual Book of ASTM Standards,Vol 08.01.6Annual Book of ASTM Standards,Vol 14.02.7Available from the American Association of State Highway and TransportationOfficials,444 North Capitol St N.W.,Washington,DC 20001.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.3.2.10 S-1 soila soil that will effectively anchor a directburial pole in the ground and resist environmental conditions.83.2.11 service access(or hand hole)a covered opening inthe pole,the axis of which is perpendicular to the axis of thepole and located above ground level,that provides access tointernal