ASTM C923/C923M-20

Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals

ABSTRACT
This specification covers resilient connectors between reinforced concrete manhole structures, pipes, and laterals. Resilient materials for connectors and filler rings shall be manufactured from natural or synthetic rubber and shall conform to the prescribed requirements. Mechanical devices 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 pipe connectors and pipe stubs are specified. The physical properties and chemical composition shall conform to the required tests 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.
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 C478/C478M 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 The values stated in inch pound or SI units are to be regarded separately as standard. The SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
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) [90 kPa (9.1 m)] 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific precaution statement, see 7.2.5.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Aug-2020
• ICS: 93.030 - External sewage systems
• Technical Committee: C13 - Concrete Pipe
• Drafting Committee: C13.06 - Manholes and Specials

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:C923/C923M −20
Standard Specification for
Resilient Connectors Between Reinforced Concrete Manhole
1
Structures, Pipes, and Laterals
This standard is issued under the fixed designation C923/C923M; 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 U.S. Department of Defense.
1. Scope Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
1.1 This specification covers the minimum performance and
Barriers to Trade (TBT) Committee.
material requirements for resilient connectors used for connec-
tions between reinforced concrete manholes conforming to
2. Referenced Documents
Specification C478/C478M and pipes, between wastewater
2
2.1 ASTM Standards:
structures and pipes, and between precast reinforced concrete
A493 Specification for Stainless Steel Wire and Wire Rods
pipe and laterals.
for Cold Heading and Cold Forging
1.1.1 These connectors are designed to minimize leakage
A666 Specification forAnnealed or Cold-WorkedAustenitic
between the pipe and manhole, and between the pipe and
Stainless Steel Sheet, Strip, Plate, and Flat Bar
lateral.
C478/C478M Specification for Circular Precast Reinforced
1.2 The values stated in inch pound or SI units are to be
Concrete Manhole Sections
regarded separately as standard. The SI units are shown in
C822 Terminology Relating to Concrete Pipe and Related
brackets. The values stated in each system may not be exact
Products
equivalents;therefore,eachsystemshallbeusedindependently
C913 Specification for Precast Concrete Water and Waste-
of the other. Combining values from the two systems may
water Structures
result in nonconformance with the standard.
D395 Test Methods for Rubber Property—Compression Set
NOTE 1—This specification covers the design, material, and perfor- D412 Test Methods for Vulcanized Rubber and Thermoplas-
mance of the resilient connection only. Connections covered by this
tic Elastomers—Tension
specification are adequate for hydrostatic pressures up to 13 psi (30 ft) [90
D471 Test Method for Rubber Property—Effect of Liquids
kPa (9.1 m)] without leakage when tested in accordance with Section 7.
D543 Practices for Evaluating the Resistance of Plastics to
Infiltration or exfiltration quantities for an installed system are dependent
Chemical Reagents
upon many factors other than the connections between manhole structures
and pipe, and allowable quantities must be covered by other specifications
D573 Test Method for Rubber—Deterioration in an Air
and suitable testing of the installed pipeline and system.
Oven
1.3 The following precautionary caveat pertains only to the
D624 Test Method for Tear Strength of Conventional Vul-
test methods portion, Section 7, of this specification: This
canized Rubber and Thermoplastic Elastomers
standard does not purport to address all of the safety concerns,
D883 Terminology Relating to Plastics
if any, associated with its use. It is the responsibility of the user
D1149 Test Methods for Rubber Deterioration—Cracking in
of this standard to establish appropriate safety, health, and
an Ozone Controlled Environment
environmental practices and determine the applicability of
D1566 Terminology Relating to Rubber
regulatory limitations prior to use. For a specific precaution
D2137 Test Methods for Rubber Property—Brittleness Point
statement, see 7.2.5.
of Flexible Polymers and Coated Fabrics
1.4 This international standard was developed in accor-
D2240 Test Method for Rubber Property—Durometer Hard-
dance with internationally recognized principles on standard-
ness
ization established in the Decision on Principles for the
NOTE 2—For more information about wastewater structures, see Speci-
fication C913.
1
This specification is under the jurisdiction of ASTM Committee C13 on
Concrete Pipe and is the direct responsibility of Subcommittee C13.06 on Manholes
2
and Specials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2020. Published September 2020. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1979. Last previous edition approved in 2018 as C923 – 18. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0923_C0923M-20. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consho
...

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 − 18 C923/C923M − 20
Standard Specification for
Resilient Connectors Between Reinforced Concrete Manhole
1
Structures, Pipes, and Laterals
This standard is issued under the fixed designation C923;C923/C923M; 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 U.S. 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 C478C478/C478M 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 SpecificationThe values stated in inch pound C923 has been developed—or SI units
areC923M; therefore, no metric equivalents are presented in this specification. to be regarded separately as standard. The SI units
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.are shown in brackets. The values stated in each system
may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two
systems may result in nonconformance with the standard.
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) [90 kPa (9.1 m)] 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, health, and environmental practices and determine the applicability of regulatory
limitations prior to use. For a specific precaution statement, see 7.2.5.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
1
This specification is under the jurisdiction of ASTM Committee C13 on Concrete Pipe and is the direct responsibility of Subcommittee C13.06 on Manholes and Specials.
Current edition approved Sept. 1, 2018Sept. 1, 2020. Published October 2018September 2020. Originally approved in 1979. Last previous edition approved in 20132018
ɛ1
as C923 – 08C923 – 18.(2013) . DOI: 10.1520/C0923-18.10.1520/C0923_C0923M-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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

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C923/C923M − 20
A493 Specification for Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging
A666 Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
C478C478/C478M Specification for Circu
...