1、Designation:C1448/C1448M05(Reapproved 2014)Standard Specification forNon-Asbestos Fiber-Cement Conduit1This standard is issued under the fixed designation C1448/C1448M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last
2、revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers non-asbestos fiber-cementconduit for use in electric-power systems and communicationsystems.The servic
3、e is for both underground and exposedconditions.1.2 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard.Within the text,theSI units are shown in brackets.The values stated in eachsystem are not exact equivalents;therefore each system shallbe used indepen
4、dently of the other.Combining values from thetwo systems may result in nonconformance with the specifi-cation.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety a
5、nd health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C150 Specification for Portland CementC497 Test Methods for Concrete Pipe,Manhole Sections,orTileC500 Test Methods for Asbestos-Cement PipeC595 Specification for Blen
6、ded Hydraulic CementsC1154 Terminology for Non-Asbestos Fiber-Reinforced Ce-ment Products2.2 Military Standard:MIL-STD-129 Marking for Shipment and Storage32.3 Federal Standard:No.123 Marking for Domestic Shipment(Civilian Agen-cies)32.4 ISO Standards:ISO 390 Products in Fibre Reinforced CementSampl
7、ingand Inspection4ISO 28591 Sampling Procedures for Inspection by Attri-butes Part 1:Sampling Schemes Indexed by AcceptanceQuality Limit(AQL)for Lot-by-Lot Inspection4ISO 3951 Sampling Procedures and Charts for Inspection byVariables for Percent Nonconforming42.5 Other Standards:Uniform Freight Clas
8、sification Rules5National Motor Freight Classification Rules63.Terminology3.1 DefinitionsRefer to Terminology C1154.3.1.1 conduit,nfiber-cement pipe used to protect wires forelectric-power or communication systems,for both under-ground and exposed situations.3.1.2 couplingcomponent made from a large
9、r diameterpipe of the same type or Type II and of the same class or ahigher class,or produced otherwise to yield at least equalperformance,for joining fiber-cement pipe that when properlyinstalled,forms a silt-tight joint,allows alignment correctionsand slight changes in direction,and provides an as
10、sembledjoint equivalent in serviceability and strength to the pipesections.3.1.3 fittingsfittings such as adapters,reducers,increasers,bends,and bell ends,for use in laying fiber-cement conduit asdescribed in Section 5 and made to such dimensions as willprovide equivalent strength and silt-tight joi
11、nts when as-sembled with the conduit.4.Classification4.1 The classes of conduit shall be as follows:4.1.1 Class BIntended for use encased in concrete afterinstallation,and4.1.2 ClassCIntendedforusewithoutconcreteencasement,or for exposed services.1This specification is under the jurisdiction of ASTM
12、 Committee C17 onFiber-Reinforced Cement Productsand is the direct responsibility of SubcommitteeC17.02 on Non-Asbestos Fiber Cement Products.Current edition approved Dec.1,2014.Published December 2014.Originallyapproved in 1999.Last previous edition approved in 2010 as C1448/C1448M 05(2010).DOI:10.
13、1520/C1448_C1448M-05R14.2For 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.3Available from Standardization Documents
14、Order Desk,Bldg.4 Section D,700Robbins Avenue,Philadelphia,PA 19111-5094.4Available from International Organization for Standardization(ISO),1 rue deVaremb,Case postale 56,CH-1211,Geneva 20,Switzerland.5Available from the Uniform Classification Commission,Room 1106,222 S.Riverside Plaza,Chicago,IL 6
15、0606.6Available from National Motor Freight Inc.,1616 P St.,NW,Washington,DC20036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 The types of conduit shall be known as Type I and TypeII corresponding to the chemical requirements give
16、n in SectionS3 of this specification.For a more thorough understandingand as a guide to the chemical resistance of fiber-cementconduit,reference is made to Test Methods C500.NOTE1There are no chemical requirements for Type I Conduit.NOTE2To assist the purchaser in choosing the type of conduit mostsuitable for his use,the following descriptions of usage may be consid-ered:4.2.1 Type IFor use where nonaggressive water and soil ofmoderate sulfate content are expected to come in contact withthe cond
