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ASTM C923/C923M-20
Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
NORMA vydaná dňa 1.9.2020
Informácie o norme:
Označenie normy: ASTM C923/C923M-20
Dátum vydania normy: 1.9.2020
Kód tovaru: NS-1004620
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM C923/C923M-20 :
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.
Keywords:
definitions, design test method, marking, material requirements acceptance criteria, product marking, resilient connector ,, ICS Number Code 93.030 (External sewerage systems)
Doplňujúce informácie
| 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 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. |
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