1、Designation:D725817Standard Specification forPolymeric Piles1This standard is issued under the fixed designation D7258;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 ye
2、ar of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification addresses the use of round and rect-angular cross-section polymeric piles in axial and lateralload-bearing applications,including but not limited to marine,w
3、aterfront,and corrosive environments.1.2 This specification is only applicable to individual poly-meric pile products.Sheet pile and other mechanically con-nected polymeric pile products using inter-locking systems,arenot part of this specification.1.3 The piling products considered herein are chara
4、cterizedby the use of polymers,whereby(1)the pile strength orstiffness requires the inclusion of the polymer,or(2)aminimum of fifty percent(50%)of the weight or volume isderived from the polymer.The type classifications of poly-meric piles described in Section 4 show how they can bereinforced by com
5、posite design for increased stiffness orstrength.1.4 This specification covers polymeric piles fabricatedfrom materials that are virgin,recycled,or both,as long as thefinished product meets all of the criteria specified herein.Diverse types and combinations of inorganic filler systems arepermitted i
6、n the manufacturing of polymeric piling products.Inorganic fillers include such materials as talc,mica,silica,wollastonite,calcium carbonate,etc.Pilings are often placed inservice where they will be subjected to continuous damp or wetexposure conditions.Due to concerns of water sensitivity andpossib
7、le affects on mechanical properties in such serviceconditions,organic fillers,including lignocellulosic materialssuch as those made or derived from wood,wood flour,flaxshive,rice hulls,wheat straw,and combinations thereof,are notpermitted in the manufacturing of polymeric piling products.1.5 The val
8、ues are stated in inch-pound units as these arecurrently the most common units used by the constructionindustry.1.6 Polymeric piles under this specification are designedusing design stresses determined in accordance with TestMethods D6108,D6109,and D6112 and procedures containedwithin this specifica
9、tion unless otherwise specified.1.7 Although in some instances it will be an importantcomponent of the pile design,frictional properties are currentlybeyond the scope of this document.1.8 Criteria for design are included as part of this specifi-cation for polymeric piles.Certain Types and sizes of p
10、oly-meric piles will be better suited for some applications thanothers.Polymeric piles designed and manufactured under thedifferent Type classifications as defined within this specifica-tion will,as a whole,exhibit a wide-range of mechanicalproperties.For example,a 10-in.diameter Type II,choppedglas
11、s fiber reinforced high-density polyethylene(HDPE)pilewill likely have an apparent stiffness much different than a10-in.diameter Type V,glass fiber reinforced composite tubefilled with concrete.Similarly,the ultimate moment capacity ofthese two example piles will also likely be significantlydifferen
12、t from each other.Use of a licensed ProfessionalEngineer is,therefore,highly recommended for designing andselecting polymeric piles in accordance with this specification.1.9 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of
13、the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this specification.2.Referenced Documents2.1 ASTM Standards:2D883 Terminology Relating to PlasticsD1141 Pra
14、ctice for the Preparation of Substitute OceanWaterD2344/D2344M Test Method for Short-Beam Strength ofPolymer Matrix Composite Materials and Their LaminatesD2915 Practice for Sampling and Data-Analysis for Struc-tural Wood and Wood-Based ProductsD5033 Guide for Development ofASTM Standards Relating1T
15、his specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.20 on Plastic Lumber.Current edition approved March 1,2017.Published March 2017.Originallyapproved in 2009.Last previous edition approved in 2014 as D7258 14.DOI:10.1520/
16、D7258-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recogni
