ASTM_C_923M_-_08b_2013.pdf

Designation:C923M08b(Reapproved 2013)Standard Specification forResilient Connectors Between Reinforced Concrete ManholeStructures,Pipes,and Laterals(Metric)1This standard is issued under the fixed designation C923M;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the minimum performance andmaterial requirements for resilient connectors used for connec-tions between precast reinforced concrete manholes conform-ing to Specification C478 and pipes,and between precastreinforced concrete pipe and laterals.1.1.1 These connectors are designed to minimize leakagebetween the pipe and manhole,and between the pipe andlateral.1.2 This specification is the SI companion to SpecificationC923.NOTE1This specification covers the design,material,and perfor-mance of the resilient connection only.Connections covered by thisspecification are adequate for hydrostatic pressures up to 70 kPa(7.1 m)without leakage when tested in accordance with Section 7.Infiltration orexfiltration quantities for an installed system are dependent upon manyfactors other than the connections between manhole structures and pipe,and allowable quantities must be covered by other specifications andsuitable testing of the installed pipeline and system.1.3 The following precautionary caveat pertains only to thetest methods portion,Section 7,of this specification:Thisstandard does not purport to address all of the safety concerns,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.For a specific precaution statement,see7.2.5.2.Referenced Documents2.1 ASTM Standards:2A493 Specification for Stainless Steel Wire and Wire Rodsfor Cold Heading and Cold ForgingA666 Specification for Annealed or Cold-Worked AusteniticStainless Steel Sheet,Strip,Plate,and Flat BarC478 Specification for Circular Precast Reinforced ConcreteManhole SectionsC822 Terminology Relating to Concrete Pipe and RelatedProductsC913 Specification for Precast Concrete Water and Waste-water StructuresD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD883 Terminology Relating to PlasticsD1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD1566 Terminology Relating to RubberD2137 Test Methods for Rubber PropertyBrittleness Pointof Flexible Polymers and Coated FabricsD2240 Test Method for Rubber PropertyDurometer Hard-nessNOTE2For more information about wastewater structures,see Speci-fication C913.3.Terminology3.1 Definitions:3.1.1 Terms relating to plastics and rubber shall be asdefined in Terminologies D883 and D1566,respectively.3.1.2 Terms relating to precast concrete pipe,manholes,andrelated products shall be as defined in Terminology C822 andas modified in 3.1.3 3.1.6.3.1.3 connectorthe entire assembly including resilientseals and metallic or nonmetallic mechanical devices,if any,used therein.3.1.4 lateralthe small diameter pipe connected to themain line.3.1.5 pipethe inlet or outlet pipe connected to the man-hole.1This specification is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.06 on Manholesand Specials.Current edition approved July 1,2013.Published July 2013.Originally approvedin 1980.Last previous edition approved in 2008 as C923M 08b.DOI:10.1520/C0923M-08BR13.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.6 pipe stuba capped or plugged pipe,or section ofpipe,installed in a manhole to allow for future connections.4.Materials and Manufacture4.1 All materials shall conform to the following require-ments:4.1.1 Resilient materials for connectors and filler rings shallbe manufactured from natural or synthetic rubber and shallconform to the requirements prescribed in Table 1.If a spliceis used in the manufacture of the seal,its strength shall be suchthat the seal shall withstand a 180 bend with no visibleseparation.4.2 Mechanical DevicesExpansion rings,tension bands,and take-up devices used for mechanically compressing