ASTM C923-08
(Specification)Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
ABSTRACT
This specification covers the minimum performance and material requirements for resilient connectors used for connections between reinforced concrete manholes and pipes, between wastewater structures and pipes, and between precast reinforced concrete pipe and laterals. These connectors are designed to minimize leakage between the pipe and manhole, and between the pipe and lateral. Materials for connectors and filler rings shall be manufactured from natural or synthetic rubber and shall conform to the resilient material test requirements for chemical resistance, tensile strength, elongation at break, hardness, accelerated oven-aging, compression set, water absorption, ozone resistance, low-temperature brittle point, and tear resistance. Expansion rings, tension bands, and take-up devices used for mechanical compression of connectors shall be made from a material or materials in combination that will ensure durability, strength, resistance to corrosion, and have properties that will ensure continued resistance to leakage. The design of the connector shall be such that positive seal is accomplished at two locations: (1) between the connector and the wall of the manhole or wastewater structure and (2) between the connector and the pipe. For lateral to pipe connectors, the design of the connector shall be such that a positive seal is accomplished at two locations: (1) between the connector and the pipe wall and (2) between the connector and the lateral. The acceptability of the resilient connector shall be determined by the results of the test methods prescribed in this specification.
SCOPE
1.1 This specification covers the minimum performance and material requirements for resilient connectors used for connections between reinforced concrete manholes conforming to Specification C 478 and pipes, between wastewater structures and pipes, and between precast reinforced concrete pipe and laterals.
1.1.1 These connectors are designed to minimize leakage between the pipe and manhole, and between the pipe and lateral.
1.2 A complete metric companion to Specification C 923 has been developed—C 923M; therefore, no metric equivalents are presented in this specification.
Note 1—This specification covers the design, material, and performance of the resilient connection only. Connections covered by this specification are adequate for hydrostatic pressures up to 13 psi (30 ft) without leakage when tested in accordance with Section 7. Infiltration or exfiltration quantities for an installed system are dependent upon many factors other than the connections between manhole structures and pipe, and allowable quantities must be covered by other specifications and suitable testing of the installed pipeline and system.
1.3 The following precautionary caveat pertains only to the test methods portion, Section 7, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific precaution statement, see 7.2.5.
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Designation:C923 −08
StandardSpecification for
Resilient Connectors Between Reinforced Concrete Manhole
1
Structures, Pipes, and Laterals
This standard is issued under the fixed designation C923; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope A493 Specification for Stainless Steel Wire and Wire Rods
for Cold Heading and Cold Forging
1.1 This specification covers the minimum performance and
A666 Specification forAnnealed or Cold-WorkedAustenitic
material requirements for resilient connectors used for connec-
Stainless Steel Sheet, Strip, Plate, and Flat Bar
tions between reinforced concrete manholes conforming to
C478 Specification for Precast Reinforced Concrete Man-
Specification C478 and pipes, between wastewater structures
hole Sections
and pipes, and between precast reinforced concrete pipe and
C822 Terminology Relating to Concrete Pipe and Related
laterals.
Products
1.1.1 These connectors are designed to minimize leakage
C913 Specification for Precast Concrete Water and Waste-
between the pipe and manhole, and between the pipe and
water Structures
lateral.
D395 Test Methods for Rubber Property—Compression Set
1.2 Acomplete metric companion to Specification C923 has
D412 Test Methods forVulcanized Rubber andThermoplas-
been developed—C923M; therefore, no metric equivalents are
tic Elastomers—Tension
presented in this specification.
D471 Test Method for Rubber Property—Effect of Liquids
D543 Practices for Evaluating the Resistance of Plastics to
NOTE 1—This specification covers the design, material, and perfor-
mance of the resilient connection only. Connections covered by this Chemical Reagents
specification are adequate for hydrostatic pressures up to 13 psi (30 ft)
D573 Test Method for Rubber—Deterioration in an Air
without leakage when tested in accordance with Section 7. Infiltration or
Oven
exfiltration quantities for an installed system are dependent upon many
D624 Test Method for Tear Strength of Conventional Vul-
factors other than the connections between manhole structures and pipe,
canized Rubber and Thermoplastic Elastomers
and allowable quantities must be covered by other specifications and
suitable testing of the installed pipeline and system.
D883 Terminology Relating to Plastics
D1149 Test Methods for Rubber Deterioration—Cracking in
1.3 The following precautionary caveat pertains only to the
an Ozone Controlled Environment
test methods portion, Section 7, of this specification: This
D1566 Terminology Relating to Rubber
standard does not purport to address all of the safety concerns,
D2137 Test Methods for Rubber Property—Brittleness Point
if any, associated with its use. It is the responsibility of the user
of Flexible Polymers and Coated Fabrics
of this standard to establish appropriate safety and health
D2240 Test Method for Rubber Property—Durometer Hard-
practices and determine the applicability of regulatory limita-
ness
tions prior to use. For a specific precaution statement, see
7.2.5.
NOTE 2—For more information about wastewater structures, see Speci-
fication C913.
2. Referenced Documents
2
2.1 ASTM Standards:
3. Terminology
3.1 Definitions:
1
This specification is under the jurisdiction of ASTM Committee C13 on 3.1.1 Terms relating to plastics and rubber shall be as
Concrete Pipe and is the direct responsibility of Subcommittee C13.06 on Manholes
defined in Terminologies D883 and D1566, respectively.
and Specials.
3.1.2 Terms relating to precast concrete pipe, manholes, and
Current edition approved March 1, 2008. Published April 2008. Originally
related products shall be as defined in Terminology C822 and
approved in 1979. Last previous edition approved in 2007 as C923 – 07. DOI:
10.1520/C0923-08.
as modified in 3.1.3-3.1.6.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.1.3 connector—the entire assembly including resilient
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
seals and metallic or nonmetallic mechanical devices, if any,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. used therein.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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C923−08
3.1.4 lateral—the small diameter pipe connected to the resilient material between the outside surface of the pipe and
main line pipe. the pipe opening in the wall of the manhole or wastewater
structure,orbycastingtheconnectorint
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C923–07 Designation: C 923 – 08
Standard Specification for
Resilient Connectors Between Reinforced Concrete Manhole
1
Structures, Pipes, and Laterals
This standard is issued under the fixed designation C 923; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This specification covers the minimum performance and material requirements for resilient connectors used for connections
between reinforced concrete manholes conforming to Specification C 478 and pipes, between wastewater structures and pipes, and
between precast reinforced concrete pipe and laterals.
1.1.1 These connectors are designed to minimize leakage between the pipe and manhole, and between the pipe and lateral.
1.2 A complete metric companion to Specification C 923 has been developed—C 923M; therefore, no metric equivalents are
presented in this specification.
NOTE 1—This specification covers the design, material, and performance of the resilient connection only. Connections covered by this specification
are adequate for hydrostatic pressures up to 13 psi (30 ft) without leakage when tested in accordance with Section 7. Infiltration or exfiltration quantities
for an installed system are dependent upon many factors other than the connections between manhole structures and pipe, and allowable quantities must
be covered by other specifications and suitable testing of the installed pipeline and system.
1.3 The following precautionary caveat pertains only to the test methods portion, Section 7, of this specification: This standard
does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
For a specific precaution statement, see 7.2.5.
2. Referenced Documents
2
2.1 ASTM Standards:
A 493 Specification for Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging
A 666 Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
C 478 Specification for Precast Reinforced Concrete Manhole Sections
C 822 Terminology Relating to Concrete Pipe and Related Products
C 913 Specification for Precast Concrete Water and Wastewater Structures
D 395 Test Methods for Rubber PropertyCompression Set
D 412 Test Methods for Vulcanized Rubber and Thermoplastic ElastomersTension
D 471 Test Method for Rubber PropertyEffect of Liquids
D 543 Practices for Evaluating the Resistance of Plastics to Chemical Reagents
D 573 Test Method for RubberDeterioration in an Air Oven
D 624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers D746Test Method for
Brittleness Tem-
perature of Plas-
tics and Elas-
tomers by Impact
D 883 Terminology Relating to Plastics
D1171Test Method for Rubber DeteriorationSurface Ozone Cracking Outdoors or Chamber (Triangular Specimens) 1149 Test
Methods for Rubber DeteriorationCracking in an Ozone Controlled Environment
D 1566 Terminology Relating to Rubber
1
ThisspecificationisunderthejurisdictionofASTMCommitteeC13onConcretePipeandisthedirectresponsibilityofSubcommitteeC13.06onManholesandSpecials.
Current edition approved March 1, 2007.2008. Published March 2007.April 2008. Originally approved in 1979. Last previous edition approved in 20022007 as
C 923 – 027.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C923–08
D 2137 Test Methods for Rubber PropertyBrittleness Point of Flexible Polymers and Coated Fabrics
D 2240 Test Method for Rubber PropertyDurometer Hardness
NOTE 2—For more information about wastewater structures, see Specification C 913.
3. Terminology
3.1 Definitions:
3.1.1 Terms relating to plastics and rubber shall be as defined in Terminologies D 883 and D 1566, respectively.
3.1.2 Terms relating to precast concr
...
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