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ASTM C923-07

(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

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 1This 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 . 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.
The following precautionary caveat pertains only to the test methods portion, Section , 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.

General Information

Status
Historical
Publication Date
28-Feb-2007
ICS
93.030 - External sewage systems
Technical Committee
C13 - Concrete Pipe
Drafting Committee
C13.06 - Manholes and Specials
Current Stage
Ref Project

Relations

Replaces
ASTM C923-02 - Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes and Laterals
Effective Date
01-Mar-2007
Replaced By
ASTM C923-08 - Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
Effective Date
01-Mar-2008
Referred By
ASTM F2946-12(2021) - Standard Specification for PVC Hub and Elastomeric Seal (Gasket) Tee Connection for Joining Plastic Pipe to Insitu Pipelines and Manholes
Effective Date
01-Mar-2007

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ASTM C923-07 - Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and LateralsASTM C923-07 - Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
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ASTM C923-07 - Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C 923 – 07
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 A 493 Specification for Stainless Steel Wire and Wire Rods
for Cold Heading and Cold Forging
1.1 This specification covers the minimum performance and
A 666 Specification for Annealed or Cold-Worked Austen-
material requirements for resilient connectors used for connec-
itic Stainless Steel Sheet, Strip, Plate, and Flat Bar
tions between reinforced concrete manholes conforming to
C 478 Specification for Precast Reinforced Concrete Man-
Specification C 478 and pipes, between wastewater structures
hole Sections
and pipes, and between precast reinforced concrete pipe and
C 822 Terminology Relating to Concrete Pipe and Related
laterals.
Products
1.1.1 These connectors are designed to minimize leakage
C 913 Specification for Precast Concrete Water and Waste-
between the pipe and manhole, and between the pipe and
water Structures
lateral.
D 395 Test Methods for Rubber Property—Compression
1.2 A complete metric companion to Specification C 923
Set
hasbeendeveloped—C 923M;therefore,nometricequivalents
D 412 Test Methods for Vulcanized Rubber and Thermo-
are presented in this specification.
plastic Elastomers—Tension
NOTE 1—This specification covers the design, material, and perfor-
D 471 Test Method for Rubber Property—Effect of Liquids
mance of the resilient connection only. Connections covered by this
D 543 Practices for Evaluating the Resistance of Plastics to
specification are adequate for hydrostatic pressures up to 13 psi (30 ft)
Chemical Reagents
without leakage when tested in accordance with Section 7. Infiltration or
D 573 Test Method for Rubber—Deterioration in an Air
exfiltration quantities for an installed system are dependent upon many
Oven
factors other than the connections between manhole structures and pipe,
and allowable quantities must be covered by other specifications and
D 624 Test Method for Tear Strength of Conventional
suitable testing of the installed pipeline and system.
Vulcanized Rubber and Thermoplastic Elastomers
D 746 Test Method for Brittleness Temperature of Plastics
1.3 The following precautionary caveat pertains only to the
and Elastomers by Impact
test methods portion, Section 7, of this specification: This
D 883 Terminology Relating to Plastics
standard does not purport to address all of the safety concerns,
D 1171 Test Method for Rubber Deterioration—Surface
if any, associated with its use. It is the responsibility of the user
Ozone Cracking Outdoors or Chamber (Triangular Speci-
of this standard to establish appropriate safety and health
mens)
practices and determine the applicability of regulatory limita-
D 1566 Terminology Relating to Rubber
tions prior to use. For a specific precaution statement, see
D 2240 Test Method for Rubber Property—Durometer
7.2.5.
Hardness
2. Referenced Documents
NOTE 2—For more information about wastewater structures, see Speci-
2
2.1 ASTM Standards:
fication C 913.
3. Terminology
1
This specification is under the jurisdiction of ASTM Committee C13 on
3.1 Definitions:
Concrete Pipe and is the direct responsibility of Subcommittee C13.06 on Manholes
3.1.1 Terms relating to plastics and rubber shall be as
and Specials.
Current edition approved March 1, 2007. Published March 2007. Originally
defined in Terminologies D 883 and D 1566, respectively.
approved in 1979. Last previous edition approved in 2002 as C 923 – 02.
3.1.2 Terms relating to precast concrete pipe, manholes, and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
related products shall be as defined in Terminology C 822 and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on as modified in 3.1.3-3.1.6.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C923–07
3.1.3 connector—the entire assembly including resilient connector and the wall of the manhole or wastewater structure
seals and metallic or nonmetallic mechanical devices, if any, shall be made by either mechanical means, compression of the
used therein. resilient material between the outside surface of the pipe and
3.1.4 lateral—the small diamet
...

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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.
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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.  
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5.1 This is a quality test control performed at the manufacturing plant to establish that the finished, shippable pipe meets the leakage limits stated in the specifications.
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1.4 Test times tabulated and the rate of air loss in this standard are based on successful testing of installed pipelines. However, since air and water have different physical properties, retests of some pipelines not meeting field air tests have been successful when tested with water. The leakage rates of 0.0017 CFM/ft2 and 0.0003 CFM/ft2, were determined empirically as the maximums for pipe to meet the 50 and 200 gal/(in. of internal diameter) (mile of sewer) (24h) test rates, respectively  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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ASTM F3220-17(2023)(Practice)
Standard Practice for Prioritizing Sewer Pipe Cleaning Operations by Using Transmissive Acoustic Inspection

SIGNIFICANCE AND USE
4.1 Significance:  
4.1.1 Collection system maintenance requires allocating cleaning resources to the right place prior to system failure (sanitary sewer overflows, mainline blockages, and building backups). Transmissive acoustic inspection provides a tool to assist in allocating cleaning resources by prioritizing pipe segments based on their blockage assessment and thereby facilitating efficient cleaning resource allocation.  
4.1.2 This standard practice provides minimum requirements and suggested practices regarding the transmissive acoustic inspection of gravity-fed sewer line blockage assessment to meet the needs of maintenance personnel, engineers, contractors, authorities, regulatory agencies, and financing institutions.  
4.2 Limitations and Appropriate Uses:  
4.2.1 The blockage assessment provided by the transmissive acoustic inspection may not resolve the type of blockage(s) within the pipe segment nor resolve the location(s) of the blockage(s) within the pipe segment.  
4.2.2 Due to the physics associated with transmissive acoustic inspection, the blockage assessment may be confounded due to:
(1) Structural designs resulting in poor acoustic coupling,
(2) Pipe segments completely filled with water, for example, full pipe sag or inverted siphon, and
(3) Transient conditions within the pipe, for example, active lateral discharge or temporary flow surcharges.
These issues are addressed as part of the performance criteria specified in X1.5.  
4.2.3 Due to physics associated with acoustics and trade-offs in equipment design for conducting transmissive acoustic inspection, there are limitations based on the following pipe segment attributes:
(1) Pipe diameter,
(2) Pipe segment length,
(3) MH depth, and
(4) Flow levels.
Inspections conducted outside the manufacturer’s recommended ranges for these pipe segment attributes may result in the transmissive acoustic blockage assessment deviating from the performance criteria specified in X1.5...
SCOPE
1.1 This practice covers procedures for assessing the blockage within gravity-fed sewer pipes using transmissive acoustics for the purpose of prioritizing sewer pipe cleaning operations.2 The assessment is based on an acoustic receiver measuring the acoustic plane wave transmitted through the pipe segment under test in order to evaluate the blockage condition of an entire segment and to provide an onsite assessment of the blockage within the pipe segment. (1, 2, 3, 4, 5)3  
1.2 The scope of this practice covers the use of the transmissive acoustic inspection as a screening tool. The blockage assessment provided by the acoustic inspection should be used to identify and prioritize pipe segments requiring further maintenance action such as cleaning or visual inspection, or both. Thereby, also identifying the pipe segments which are sufficiently clean and do not require additional maintenance action.  
1.3 This standard practice does not address structural issues with the pipe wall.  
1.4 The inspection process requires access to the manhole (MH) from ground level. It does not require physical access to the sewer line by either the equipment or the operator.  
1.5 This standard practice applies to all types of pipe material.  
1.6 The inspection process requires access to sewers and operations along roadways or other locations that are safety hazards. This standard does not describe the hazards likely to be encountered or the safety procedures that must be carried out when operating in these hazardous environments.  
1.7 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.8 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 s...

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ASTM F2551-09(2023)(Practice)
Standard Practice for Installing a Protective Cementitious Liner System in Sanitary Sewer Manholes

ABSTRACT
This practice describes the procedures involved in the structural reinforcement, sealing, protection, and rehabilitation of sanitary sewer manholes by the application of a prepackaged protective cementitious liner system to all cleaned interior surface from the bottom of the frame to the bench. The manholes to which the cementitious liner shall be applied may be made of brick, concrete, block, and various other materials. Detailed descriptions are given for all prepackaged materials necessary for this practice that include materials for substrate repairs, cementitious repair materials, infiltration water control materials, cementitious water control materials, chemical grout materials, and lining materials. Detailed descriptions are also provided for each procedure involved here which includes surface preparation, high pressure cleaning, surface repair, mixing of prepackaged cementitious repair materials, spray application of the cement liner by manual surface sealing or centrifugal cast process, and curing of the freshly applied cementitious mortar.
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Standard Practice for Sealing Sewer Manholes Using Chemical Grouting

SIGNIFICANCE AND USE
3.1 This practice is used as a guide for the installation of chemical grout in the practice of sealing sewer manholes from leaks, cracks, and around penetrations. It is attended to assist sewer owners and engineer, owner’s representative, or authorized inspectors for installation method specification and for contractors to refer to during installations of chemical grout for manhole sealing.
SCOPE
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1.2 The contractor shall be responsible for furnishing all labor, supervision, materials, equipment, and inspection follow-up required for the completion of chemical grouting of manhole defects in accordance with the contract documents.  
1.3 Materials, additives, mixture ratios, and procedures utilized for the grouting process shall be in accordance with manufacturer’s recommendations and shall be appropriate for the application.  
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.5 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.  
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