1、Designation: A 1056 08Standard Specification forCast Iron Couplings Used for Joining Hubless Cast Iron SoilPipe and Fittings1This standard is issued under the fixed designation A 1056; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the materials and testing ofcast iron couplings for joining hubless cast iron
3、soil pipe andfittings for sizes 112 to 10 in.1.2 It is the purpose of this specification to furnish informa-tion as to the characteristics of a particular sleeve type couplingwhen applied to cast iron soil pipe and fittings manufactured inaccordance with SpecificationA 888, latest revision, and CISP
4、IDesignation 301, latest revision.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 The following precautionary caveat pertains onl
5、y to thetest method portion, Section 8, of this specification. Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability
6、 of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2A 48/A 48M Specification for Gray Iron CastingsA 644 Terminology Relating to Iron CastingsA 888 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste, and VentPiping Applicatio
7、nsC 564 Specification for Rubber Gaskets for Cast Iron SoilPipe and FittingsD 2240 Test Method for Rubber PropertyDurometerHardnessE8 Test Methods for Tension Testing of Metallic Materials2.2 ANSI Standards:3ANSI B18.2.1 Square and Hex Bolt and Screws Inch SeriesANSI B18.1.2 Square and Hex Nuts (Inc
8、h Series)2.3 CISPI Standard:4CISPI-301 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste and VentPiping Applications3. Terminology3.1 Definitions:3.1.1 Definitions of the following terms used in this speci-fication are found in Terminology A 644: elastomer
9、ic, durom-eter and dynamic.3.2 Definitions of Terms Specific to This Standard:3.2.1 center stop, nan integral part of the gasket centeredon the axial length of the gasket intended to limit the insertiondepth of the pipe and/or fitting to be coupled.3.2.2 clamp assembly, nthat portion of the coupling
10、excluding the gasket, nuts and bolts.3.2.3 coupling, nthe complete assembly.3.2.4 fitting, nparts of a pipeline other than straight pipes,valves, or couplings.3.2.5 gasket, nthe elastomeric portion of the coupling.3.2.6 joint, nthe point of assembly consisting of thecoupling and the joined pipes or
11、fittings, or both.3.2.7 manufacturer of the clamp assembly, nthe entitythat casts the clamp assembly.3.2.8 manufacturer of the coupling, nthe entity that as-sembles the components of the coupling such as the gasket andthe clamp assembly.3.2.9 manufacturer of the gasket, nthe entity that pro-duces th
12、e elastomeric portion of the coupling.1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.75 on Gaskets andCoupling for Plumbing and Sewer Piping.Current edition approved June 1, 2008. Published June 2008.2For refer
13、enced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43r
14、d St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from Cast Iron Soil Pipe Institute (CISPI), 5959 Shallowford Rd.,Suite 419, Chattanooga, TN 37421, http:/www.cispi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States
15、.4. Materials and Manufacture4.1 Physical properties of gaskets shall comply with Speci-fication C 564 and the dimensions, material specifications,physical and chemical properties as shown in Fig. 1, Fig. 2,Table 1, and Table 2.4.2 All cast iron parts shall be made of a minimum class 25cast iron and
16、 shall show compliance to this requirement usingtest methods contained in Specification A 48/A 48M.Dimensions in. (mm)112 (38.100) 2 (50.800) 3 (76.200) 4 (101.600) 5 (127.000) 6 (152.400) 8 (203.200) 10 (254.000)A 2.125(53.975)2.125(53.975)2.125(53.975)2.125(53.975)3.000(76.200)3.000(76.200)4.000(1
17、01.600)4.000(101.600)B 1.531(38.887)1.969(50.013)2.969(75.413)4.000(101.600)4.969(126.213)5.969(151.613)7.969(202.413)10.085(256.159)C 1.937(49.200)2.344(59.538)3.344(84.938)4.406(111.912)5.344(135.737)6.344(161.138)8.344(211.938)10.460(265.684)D 1.531(38.887)1.969(50.013)2.969(75.413)4.000(101.600)
18、4.969(126.213)5.969(151.613)7.969(202.413)10.085(256.159)E 1.037(26.340)2.250(57.150)3.250(82.550)4.313(109.550)5.250(133.350)6.250(158.750)8.250(209.550)10.366(263.296)F 1.937(49.200)2.344(59.538)3.344(84.938)4.406(111.912)5.344(135.737)6.344(161.138)8.344(211.938)10.460(265.684)G 2.125(53.975)2.53
19、1(64.287)3.531(89.687)4.594(116.688)5.532(140.513)6.532(165.913)8.532(216.713)10.650(270.510)H 2.219(56.363)2.625(66.675)3.625(92.075)4.684(118.974)5.626(142.900)6.626(168.300)8.626(219.100)10.744(272.898)J 2.313(58.750)2.719(69.063)3.719(94.463)4.781(121.437)5.720(145.288)6.720(170.688)8.720(221.48
20、8)10.838(275.285)NOTEDimensional Tolerances to be RMA Class 3 (see Table 1).FIG. 1 Rubber GasketA10560824.2.1 The manufacturer of the clamp assembly shall per-form tests to determine mechanical properties of the iron usedin the manufacture of iron soil couplings. Tension test speci-mens shall be emp
21、loyed. The manufacturer of the clampassembly shall maintain a record of mechanical tests for aminimum of 7 years.4.2.2 Tensile Strength TestTest bars shall be cast inaccordance with the requirements of Specification A 48/A 48M. The machined test bar dimensions and drawing anddimensions of as cast te
22、st bars are found in Fig. 1 of Specifi-cation A 888. The tensile strength shall be determined inaccordance with Test Methods E8. The tensile strength shall benot less than 25 000 psi (145 MPa).4.2.3 Tension test reports shall include breaking load of testbars, machined diameter of test bar, and calc
23、ulated tensilestrength.4.2.4 Analysis of castings or test bars after the time ofproduction shall not be used as evidence of compliance to thisspecification.4.3 Nuts and bolts shall be stainless steel Grade 304, shallconform to the requirements of ANSI Specification B18.2.1and B18.2.2, and shall not
24、have screwdriver slots.5. Elastomeric Gasket Requirements5.1 The elastomeric gasket shall consist of one piece con-forming to the physical requirements of Specification C 564with hardness (nominal durometer 6 5) 70 as tested inaccordance with Specification D 2240.5.1.1 The elastomeric gasket shall h
25、ave an inside center stopthat does not create an enlargement chamber or recess with aledge, shoulder, or reduction of pipe area or offer an obstruc-tion to flow.5.1.2 The elastomeric gasket shall be free of defects thataffect the use and serviceability.6. Clamp Assembly Requirements6.1 The clamp ass
26、embly material shall be class 25 cast ironand comply with 4.2.2 of this specification.6.1.1 The clamp assembly shall comply with dimensionspecifications, as are given in Fig. 2, Fig. 3, and Fig. 4. Theclamp assembly shall consist of two sections that interlockusing a nut and bolt. The clamp assembly
27、 shall have theminimum wall thickness along the ring wall and the minimumwall thickness along the ear wall with tapered ends as shownon Fig. 4.6.1.2 Clamp assemblies shall be tested to withstand no lessthan 125 % of manufacturer of the couplings stated installa-tion torque or a minimum of 175 lbfin.
28、 (19.77 Nm) of appliedtorque, whichever is greater, without visible signs of failure.The clamp assembly shall be tested over a steel mandrel of theappropriate diameter and torqued as required.6.1.3 The clamp assembly shall be designed to accommo-date maximum and minimum ODs of pipe and fittings assh
29、own in Table 3.7. Sampling7.1 The manufacturer of the coupling shall, upon receipt ofa shipment of clamp assemblies from the manufacturer of theclamp assemblies, take a random sampling of couplingsNominal Size in. (mm) Coupling Size in. (mm) Bolt Size in. (mm)Coupling Size Pipe Diameter Height X Wid
30、th Y Depth Z No. Size 3 Length112 (38) 1.90 6.06 (48.26 61.52) 2.875 (73.025) 4.50 (114.300) 2.125 (53.975) 2 0.375 3 1.502 (50) 2.35 6.09 (59.69 6 2.29) 3.375 (85.725) 4.875 (123.825) 2.125 (53.975) 2 0.375 3 1.503 (76) 3.35 6.09 (85.09 6 2.229) 4.25 (107.950) 6 (152.400) 2.125 (53.975) 2 0.375 3 1
31、.504 (101) 4.38 +.09/-.05 (111.252 + 2.286 1.270) 5.25 (133.350) 7 (177.800) 2.125 (53.975) 2 0.375 3 1.505 (127) 5.30 +.09/-.05 (111.25 + 2.229 1.27) 6 .25 (158.750) 8.625 (219.075) 3.125 (79.375) 4 0.375 3 1.506 (152) 6.30 +.09/-.05 (160.02 + 2.229 1.270) 7.50 (190.500) 9.25 (234.950) 3.125 (79.37
32、5) 4 0.375 3 1.508 (203) 8.38 +.09/-.09 (212.85 + 3.3 2.29) 9.50 (241.300) 11.75 (298.450) 4 (101.600) 4 0.375 3 210 (254) 10.56 6.09 (268.22 62.29) 11.813 (300.203) 14.33 (364.058) 4 (101.600) 4 0.375 3 2.25NOTETolerance shall be 6 0.125 in. (0.975) unless otherwise specified.FIG. 2 Clamp Assembly
33、DimensionsTABLE 1 Dimensional Tolerances for RubberStandardDimensional Tolerances RMA CLASS 3NOTE8.000 and overmultiplied by 0.0050. These are commercialtolerances.Size in. (mm)Fixed,6 in. (mm)Closure,6 (in. (mm)0 to 0.499 (0 to 12.675) 0.010 (0.254) 0.015 (0.381)0.500 to 0.999 (12.700 to 25.375) 0.
34、010 (0.254) 0.018 (0.457)1.000 to 1.999 (25.400 to 50.744) 0.015 (0.381) 0.020 (0.508)2.000 to 2.999 (50.800 to 76.175) 0.020 (0.508) 0.025 (0.635)3.000 to 3.999 (76.200 to 101.575) 0.025 (0.635) 0.030 (0.762)4.000 to 4.999 (101.600 to 126.975) 0.030 (0.762) 0.035 (0.889)5.000 to 7.999 (127.000 to 2
35、03.175) 0.035 (0.889) 0.050 (1.270)A1056083manufactured therefrom and subject them to the tests specifiedin Section 8. If a coupling fails any of the tests, then the entireshipment of clamp assemblies of that size shall be rejected andreturned to the manufacturer of the clamp assemblies. Themanufact
36、urer of the coupling shall retain the test results andrelated documentation for not less than 7 years.8. Coupling Requirements and Test Methods8.1 Assemble each coupling tested according to the manu-facturer of the couplings instructions between two sections ofrandomly selected hubless cast iron soi
37、l pipe meeting therequirements of CISPI-301 or Specification A 888 or onesection of randomly selected hubless cast iron soil pipemeeting the requirements of CISPI-301 or Specification A 888and a fitting and conduct the following tests: deflection andshear. In addition, an unrestrained hydrostatic te
38、st will beperformed between two sections of machined steel pipe.8.1.1 Deflection Test:8.1.1.1 A test apparatus such as the one shown in Fig. 5 issuggested. Other testing apparatuses that provide restraint tothe assembly shall also be permitted. Close the outboard endsof the pipe with test plugs.8.1.
39、1.2 Fill the assembly with water, expel all air, andhydrostatically pressurize to 4.3 psi (29.6 kPa) for the durationof the test. One pipe shall be rigidly supported and while theassembly is under pressure, raise the opposite end of the otherpipe12 in. (12.7 mm) per lineal foot of pipe. Maintain the
40、pressure for 5 min. Any leakage shall mean failure.8.1.2 Shear Test:8.1.2.1 Support two joined lengths of randomly selectedhubless cast iron soil pipe on blocks, a minimum of 112 in.(38.1 mm) high, at three locations. One length shall be aminimum of 24 in. (609.6 mm) in length, supported on blocks,o
41、ne near the uncoupled end, and the other immediatelyadjacent to the coupling. Firmly restrain this length in positionas shown in Fig. 6. The other coupled length shall be aTABLE 2 Rubber Gasket Physical RequirementsNOTE 1Material: The sealing sleeve shall be made from an elastomeric compound that me
42、ets the requirements of Specification C 564.NOTE 2Physical Tests: The test specimens shall be obtained from finished sleeves and tested pursuant to the methods described in the following table.TestPhysical Tests,Min or Max RequirementsASTM MethodTensile Strength 1500 psi (105.49 kg/cm) min D 412Elon
43、gation 250 min D 412Durometer (Shore A) 70 6 5at766 5 D 2240Accelerated Aging 15 % max tensile and 20 % max elongation deterioration, 10 points max; increase in hardness,all determinations after oven aging for 96 h at 158F (70C)D 573Compression Set 25 % max after 22 h at 158F (70C) D 395 Method BOil
44、 Immersion 80 % max volume change after immersion in ASTM oil no. IRM903 for 70 h at 212F (100C) D 471Ozone Cracking No visible cracking at 2 times magnification of the gasket after 100 h. Exposure in 1.5 ppmozone concentration at 100F (37.778C). Testing and inspection to be on gasket which is loopm
45、ounted to give approximately 20 % elongation of outer surfaceD 1149Tear Resistance Die C; 150 lb (68.089 mm) min per in. (25.400 mm) of thickness D 624Water Absorption 20 % max by weight after 7 days at 158F (70C) D 471Nominal Pipe SizeStyle 1 Style 2ABCD112 1.0625 3.7600 2 1.0625 4.1875 3 1.0625 5.
46、1875 4 1.0625 6.3437 5 2.0625 7.59376 2.0625 8.62508 1.6562 10.87510 1.6562 13.315NOTETolerance shall be 6 0.125 in. (0.975) unless otherwise specified.FIG. 3 Bolt Hole Layout DimensionsA1056084minimum of 5 ft (1.52 m) in length and supported by a singleblock 6 in. (152.4 mm) from the end of the pip
47、e.8.1.2.2 Fill the assembly with water and expel all air. Applya load of 50 lb/in. of nominal diameter at a point 6 in. (152.4mm) from the edge of the coupling upon a 12 in. (304.8 mm)length of (3 by 3) angle iron or load distribution pad located onthe top of the pipe immediately adjacent to the cou
48、pling of thepipe having one support only. Under this loading there shall beno visible leakage or displacement of more than38 in. (9.53mm) from true alignment adjacent to the coupling, when aninternal pressure equivalent to a 10 ft (3.05 m) head of water.4.3 psi (29.6 kPa) is applied. Maintain the lo
49、ad and internalpressure for 15 min.8.1.3 Unrestrained Hydrostatic Test:8.1.3.1 Assemble each coupling tested according to themanufacturers instruction between two sections of pipe andconduct the unrestrained hydrostatic test.8.1.3.2 The assembly shall consist of a maximum outsidediameter pipe connected to a minimum outside diameter pipewith diameters as referenced in Table 3 and lengths as shownin Fig. 7. Machine the plain ends of the pipe to be used for theunrestrained hydrostatic test to the corre
