Home>ASTM Standards>ASTM C425-04(R2018) pdf free download

ASTM C425-04(R2018) pdf free download

ASTM C425-04(R2018) pdf free download.Standard Specification for Compression Joints for Vitrified Clay Pipe and Fittings
1. Scope
1.1 This specification covers materials and test requirements for compression joints for vitrified clay pipe and fittings. See Specification C700 for pipe specifications. The test require- ments are applicable to pipe joint assemblies prior to field installation of pipe. N OTE 1—Install pipe in accordance with Practice C12. 1.2 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. 1.3 The following precautionary caveat pertains only to the Test Requirements portion, Section 7, of this standard. This standard does not purport to address all ofthe safety concerns, ifany, associated with its use. It is the responsibility ofthe user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
5. Materials and Manufacture
5.1 Rubber ring-sealing elements shall conform to the requirements of Table 1. 5.2 Rubber for other than ring-sealing elements shall con- form to the requirements of Table 2.5.3 Plastic components shall conform to the requirements of Table 3. 5.4 Metallic components shall be of corrosion-resistant metal conforming to Specifications A167 and A240/A240M. 5.5 If any of the test specimens fail to meet the chemical resistance requirements, the manufacturer will be allowed a retest of two additional specimens, representative of the original material tested, for each one that failed. The jointing material will be acceptable if all retest specimens meet the test requirements. 5.6 Joints complying with this standard are suitable for most domestic and commercial applications. However, attention is called to the fact that industrial effluents vary in content, concentration, duration of discharge and temperature; and specific evaluations of joint performance in such environments are necessary. In those instances, consult the manufacturer.
6. Joint Specimen Preparation
6.1 When required, assembled joints representative of the pipe and joints to be used, shall be selected from the supplier’s stock by the purchaser or his representative. 6.2 Specimens selected for the test shall be up to 0.25 % of the number of joints to be furnished. No fewer than two assembled joints shall be tested for each diameter of pipe furnished. 6.3 Test specimens shall not be taken from damaged joints or pipe.
7. Test Requirements for Joints
7.1 Joints shall meet the requirements of 7.1.1 and 7.1.2 or 7.1.1 and 7.1.3, when subjected to an internal 10-ft (3.1-m) head of water pressure (4.3 psi (30 kPa)), for a total test period of 1 h. The recommended temperature of the water, pipe, and atmosphere is 60 to 75°F (16 to 24°C). 7.1.1 Joints shall not leak when tested in the straight position and when deflected to amounts shown in Table 4. The ends of the test line shall only be restrained the amount that is necessary to prevent longitudinal movement. The deflection shall be determined by measuring the distance the free end of one pipe moves away from the center line in any direction while the other pipe remains fixed. 7.1.2 Assembled joints shall not leak when subjected to shear. The shear load shall be a force of 150 lbf/in. (26 kN/m) of nominal diameter uniformly applied over an arc of not less than 120° (2.1 rad) along a longitudinal distance of not more than 12 in. (305 mm) at the spigot end of one pipe. The load is applied immediately adjacent to the assembled joint with the other pipe adequately secured and supported on blocks placed immediately adjacent to the joint. 7.1.3 Joints shall not leak when the jointed ends are dis- placed relative to one another in any direction perpendicular to the pipe axis a distance of 0.04 in./in. (0.04 mm/mm) of pipe diameter.

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