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.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
C478 Specification for Precast Reinforced Concrete Manhole Sections
C822 Terminology Relating to Concrete Pipe and Related Products
C913 Specification for Precast Concrete Water and Wastewater Structures
D395 Test Methods for Rubber Property--Compression Set
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D471 Test Method for Rubber Property--Effect of Liquids
D543 Practices for Evaluating the Resistance of Plastics to Chemical Reagents
D573 Test Method for Rubber--Deterioration in an Air Oven
D624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers
D883 Terminology Relating to Plastics
D1149 Test Methods for Rubber Deterioration--Cracking in an Ozone Controlled Environment
D1566 Terminology Relating to Rubber
D2137 Test Methods for Rubber Property--Brittleness Point of Flexible Polymers and Coated Fabrics
D2240 Test Method for Rubber Property--Durometer Hardness
definitions; design test method; marking; material requirements acceptance criteria; product marking; resilient connector; Sewer pipe (concrete)--specifications; Concrete construction materials/applications--specifications; Concrete pipe--specifications; Concrete pipe (reinforced)--specifications; Connectors (resilient); Gaskets--specifications; Laterals (concrete); Manhole materials/applications--specifications; Pond/canal/reservoir/ditch linings--specifications; Precast concrete products--specifications; Resilient connectorsr;
ICS Number Code 93.030 (External sewerage systems)
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