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Standard Test Method for Joint Restraint Products for Use with PVC Pipe
Přeložit název
NORMA vydána dne 1.11.2018
Označení normy: ASTM F1674-18
Datum vydání normy: 1.11.2018
Kód zboží: NS-910119
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
This test method describes a procedure for qualifying the performance of joint restraint products for use on PVC pressure pipe systems by evaluating the effect of the joint restraint product on the performance characteristics of PVC pipe during cyclic pressure tests and static pressure tests. This test method is useful for establishing any effects that a joint restraint product has on the performance of PVC pressure pipe. This test method is designed so that success in all three parts of the test provides reasonable assurance that a joint restraint product may be used on PVC pipe at the full pressure rating and capacity of the pipe. Pipe specimen length, minimum burst pressure test, sustained pressure test, and cyclic surge pressure test shall be performed to conform with the specified requirements.
Keywords:
cyclic surge pressure test, joint restraint for PVC, mechanical joint restraint for PVC pipe, Vinson equation ,, ICS Number Code 23.040.99 (Other pipeline components)
Significance and Use | ||||||||||||
4.1 This test method is useful for establishing any effects that a joint restraint product has on the performance of PVC pressure pipe. This test method is designed so that success in all three parts of the test provides reasonable assurance that a joint restraint product may be used on PVC pipe at the full pressure rating and capacity of the pipe. 4.2 Restrained joint test specimens shall be subjected to internal pressures that are equal to the minimum burst pressure requirements for the pipe alone. The minimum burst pressure requirements for some common dimension ratios are shown in Table 1. The minimum burst pressures for other dimension ratios of pipe produced from 12454 PVC Compound (that is, pipe conforming to Specification D1785) may be determined based on a hoop stress of 6400 psi (44.13 MPa). 4.3 Testing of restrained joint test
specimens for 1000 h at the sustained pressure requirements
indicates any tendency of the restraint to fail in the long term.
The minimum sustained pressure requirements for some common
dimension ratios are shown in Table
2. The minimum sustained pressure for other dimension ratios
of pipe produced from 12454 PVC Compound (for example, pipe
conforming to Specification D1785) may be determined based on a hoop
stress of 4200 psi (28.96 MPa).
4.4 A cyclic surge pressure test of
restrained joint test specimens determines the effect of the joint
restraint product on the cyclic fatigue life of PVC pipe. This test
method provides a means for quickly identifying any reduction in
performance that might result from the combination of the joint
restraint product and the pipe. The peak hoop stress shall be
determined for the pipe based on the Vinson equation for a period
of 1 000 000 cycles. The base pressure shall be one half of the
peak pressure. The peak pressure requirements for some common
dimension ratios are shown in Table
3. The peak pressure for other dimension ratios for pipe
produced from 12454 PVC Compound (for example, pipe conforming to
Specification D1785) may be
determined based on a hoop stress of 1587 psi (10.94 MPa).
1.1 This test method describes a
procedure for qualifying the performance of joint restraint
products for use on PVC pressure pipe systems by evaluating the
effect of the joint restraint product on the performance
characteristics of PVC pipe during cyclic pressure tests and static
pressure tests. The PVC pipe property values referenced in this
test method are for the 12454 compound as described in
Specification D1784 and a
4,000 HDB shall be obtained by categorizing the LTHS in accordance
with Table 1 in Test Method D2837. That includes, but is not limited
to, pipe produced in accordance with the following standards:
Specifications D1785 and
D2241, and AWWA C900.
1.2 This test method determines the short-term performance of a joint restraint product on PVC pipe, which involves the testing of restrained joint test sections to the minimum burst pressure requirements of the pipe to determine quick burst performance. 1.3 This test method determines the long-term effect of a joint restraint product on PVC pipe, which involves the testing of restrained joint test sections to the sustained pressure requirements of the pipe for a period of 1000 h. 1.4 This test method addresses restraint products that are rated at the full pressure capacity of the PVC pipe on which they are used. There are joint restraint devices available that are not rated at the full pressure capacity of the pipe. While those products have proven acceptable and useful in the marketplace, this test method does not apply to those products. 1.5 This test method determines the performance of a joint restraint product on PVC pipe subjected to cyclic pressure surges. The performance is compared to the baseline performance of pipe without joint restraint products established by Herbert W. Vinson.1.6 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. 1.7 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. 1.8 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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2. Referenced Documents | ||||||||||||
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