1、Designation: C1644 06 (Reapproved 2011)Standard Specification forResilient Connectors Between Reinforced Concrete On-SiteWastewater Tanks and Pipes1This standard is issued under the fixed designation C1644; the number immediately following the designation indicates the year oforiginal adoption or, i
2、n the case of revision, 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 minimum performance andmaterial requirements for res
3、ilient connectors used for connec-tions between reinforced concrete tanks used for septic effluenttreatment/detention, including those referenced in Specifica-tions C913 and C1227.1.1.1 These connectors are designed to eliminate leakagebetween the pipe(s) and tank.1.2 A complete metric companion to
4、Specification C1644has been developedC1644M; therefore, no metric equiva-lents are presented in this specification.NOTE 1This specification covers the design, material, and perfor-mance of the resilient connection only. Connections covered by thisspecification are adequate for hydrostatic pressures
5、up to 5 psi (11.5 ft)without leakage when tested in accordance with Section 7. Infiltration orexfiltration quantities for an installed system are dependent upon manyfactors other than the connectors between tanks and pipes, and allowablequantities must be covered by other specifications and suitable
6、 testing ofthe installed pipe and system.1.3 The following precautionary caveat pertains only to thetest methods portion, Section 7, 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
7、 standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for PressureVessels and f
8、or General ApplicationsC822 Terminology Relating to Concrete Pipe and RelatedProductsC913 Specification for Precast Concrete Water and Waste-water StructuresC1227 Specification for Precast Concrete Septic TanksD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubbe
9、r and Thermo-plastic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Therm
10、oplastic ElastomersD746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD883 Terminology Relating to PlasticsD1149 Test Methods for Rubber DeteriorationCrackingin an Ozone Controlled EnvironmentD1566 Terminology Relating to RubberD2240 Test Method for Rubber PropertyDurome
11、terHardness3. Terminology3.1 Definitions:3.1.1 Terms relating to plastics and rubber shall be asdefined in Terminologies D883 and D1566, respectively.3.1.2 Terms relating to precast concrete tanks, and relatedproducts shall be as defined in Terminology C822 and asmodified in 3.1.3-3.1.5.3.1.3 connec
12、torthe entire assembly including resilientseals and metallic or nonmetallic mechanical devices, if any,used therein.3.1.4 pipethe inlet or outlet pipe connected to the tank.3.1.5 pipe stuba short section of pipe, installed in thestructure as an inlet or outlet pipe, for future connection.4. Material
13、s and Manufacture4.1 All materials shall be suitable for use in sanitary sewageapplications.4.1.1 Resilient MaterialsResilient materials for connec-tors shall be manufactured from natural or synthetic materialsand shall conform to the requirements prescribed in Table 1and 4.1. If a splice is used in
14、 the manufacture of the seal, its1This specification is under the jurisdiction ofASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.30 on Waterand Wastewater Containers.Current edition approved May 1, 2011. Published June 2011. Originallyapproved in 2
15、006. Last previous edition approved in 2006 as C1644 06. DOI:10.1520/C1644-06R11.2For referenced 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
16、 onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.strength shall be such that the splice can withstand a 180 bendwith no visible separation.4.1.2 Mechanical DevicesExpansion rings, tension bands,and take-up devices
17、used for mechanically compressing theresilient portion of the connector against the pipe, or tank shallbe made from a material or materials in combination that willensure durability, strength, resistance to corrosion, and haveproperties that will ensure continued resistance to leakage. Allmetallic m
18、echanical devices, including castings and bolt as-semblies used in or with the connector shall be constructed ofseries 300 stainless steel in accordance with SpecificationA240/A240M.NOTE 2Experience has shown that successful performance of thisproduct depends on the type of bedding and backfill and
19、the care in thefield installation of the tank and connecting pipes. The owner is cautionedto require inspection at the construction site.5. Principles of Design5.1 The design of the connector shall be such that positiveseal is accomplished at two locations: (1) between the connec-tor and the tank an
20、d (2) between the connector and the pipe.The seal between the connector and the tank, and between theconnector and the pipe, may be made by any suitable anddurable means, provided that it meets the requirements of Table1 and Section 7.5.2 Purchaser shall require that all pipe stubs installed, toallo
21、w for future connection to the structure, be mechanicallyrestrained from movement by means of, and in addition to, theresilient connectors.6. Basis of Acceptance6.1 Each connector design shall be tested in accordancewith the requirements of Section 7. For connectors into whichmore than one pipe size
22、 may be installed, each pipe size shallbe tested independently.6.2 The acceptability of the resilient connector shall bedetermined by the results of the physical tests prescribed in thisspecification, and by inspection, to determine whether theconnector conforms to the specification with regards to
23、designand freedom from defects.6.3 When requested, a current certification shall be fur-nished as the basis of acceptance. The certification shall consistof the connector manufacturers test report, or statement by themanufacturer, accompanied by a copy of the test results, thatthe resilient connecto
24、r has been tested and inspected inaccordance with the provisions of Table 1 and Section 7.NOTE 3Certification shall be deemed current, if it represents presentdesign, and bears a date that is no more than five years older than thecurrent date.7. Test Methods and Requirements7.1 The intent of these t
25、ests is to demonstrate resistance ofthe tank/connector/pipe interface to hydrostatic infiltration andexfiltration. The test report shall clearly define the specificmethods used in testing so that these may be readily under-stood.7.2 Install the connector(s) to be tested into a tank or into aprecast
26、wall test section. Install the pipe(s) according to thedirections of the connector manufacturer. Seal the test tank orsection so that test pressure can be applied to the entire areaaround the section, connector, and pipe. Testing shall beperformed either by installing two connectors oriented inoppos
27、ite directions (bi-directional) and testing both simultane-ously under each condition below, or by applying infiltrationand exfiltration test pressure in series to a single connector/pipe/wall section under each condition below. Hydrostaticpressure shall be 5 psi at the pipe centerline of the highes
28、tconnector. Each condition below shall be tested for a period of5 min with infiltration and 5 min with exfiltration test pressure.In simultaneous bi-directional testing, only one 5-min test shallbe required. Gages used for this testing shall be in currentcalibration traceable to NIST and have a maxi
29、mum limit of nomore than 15 psi. If a water column is used, it shall measure noless than 11.5 ft in height to the centerline of the highestconnector. If the connector permits more than one pipe size,O.D., or type to be installed, each pipe size, O.D., or type shallbe individually tested and certifie
30、d to the requirements ofSection 7.7.3 Required Tests:7.3.1 Straight Alignment of the Pipe(s)With the pipe(s)aligned to the test wall section at 90, the connector(s) shall besubjected to infiltration and exfiltration test pressures for aperiod of 5 min in each condition.TABLE 1 Resilient Material Tes
31、tsTest Test RequirementsAASTM Test MethodChemical Resistance1 N sulfuric acid No weight loss D543, at 22C for 48 h1 N hydrochloric acid No weight lossTensile strength 1000 psi, min D412Elongation at break 350 %, minHardnessB65 from manufacturers specified hardness D2240 (Type A Durometer)Accelerated
32、 oven-aging Decrease of 15 %, max, of original tensile strength,Decrease of 20 %, max, of original elongationD573,706 1C for 7 daysCompression set Decrease of 25 %, max, of original deflection D395, method B, at 70C for 22 hWater absorption Increase of 10 %, max, of original by weight D471, immerse
33、0.75 by 2 in. specimenin distilled water at 70C for 48 hOzone resistance Rating 0 D1149Low-temperature brittle point No fracture at 40C D746Tear resistance 150 lbf/in., min. D624, Die BASpecimens shall be prepared from connector specimens, and shall not be prepared from laboratory slabs or by direct
34、 molding.BThe connector manufacturer shall select the hardness appropriate for each component of the connector. Thereafter, the hardness shall comply within the tolerancesin Table 1.C1644 06 (2011)27.3.2 Axial Deflection of the Pipe(s)The pipe(s) shall beaxially deflected at least 7 in any direction
35、 and the connec-tor(s) shall be subjected to infiltration and exfiltration testpressures for a period of 5 min in each condition.7.3.3 Shear Loading of the Pipe(s)A constant verticalload of 50 lb/in. pipe diameter shall be applied at a point 12-in.from the structure wall. The end of the pipe shall b
36、e supportedat a point 24-in. from the structure wall. Both the load and thesupport shall utilize a radiused form at least 2-in. wide andclosely fitting the outside diameter of the test pipe section forat least 120 of its circumference to prevent collapse of the pipesection. After application of the
37、constant load, the connector(s)shall be subjected to infiltration and exfiltration test pressuresfor a period of 5 min in each condition.NOTE 4Fig. 1 shows one method of performing these tests. Anysuitable method may be used, provided that all required tests areperformed.7.3.4 WarningIt is suggested
38、 that hydrostatic pressure berelieved while changes are made between different test condi-tions.7.4 Leakage shall be construed to mean freely drippingwater emanating at the interface between the connector and thestructure or the pipe, or through the body of the connectoritself.7.5 Moisture appearing
39、 at random locations or at the base ofthe outlet in the form of patches or beads adhering to thesurfaces shall not be considered leakage.7.6 A delay of up to 24 h is not prohibited prior to makingobservations of leakage.8. Product Marking8.1 Each connector shall be marked permanently and leg-ibly by
40、 the connector manufacturer with his trade name and thesize designation or part number.9. Keywords9.1 definitions; design test method; marking; material re-quirements acceptance criteria; product marking; resilientconnectorC1644 06 (2011)3FIG. 1 Suggested Methodology for Hydrostatic TestingC1644 06
41、(2011)4ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such righ
42、ts, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional
43、standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM
44、Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C1644 06 (2011)5
