1、Designation: C 1644 06Standard Specification forResilient Connectors Between Reinforced Concrete On-SiteWastewater Tanks and Pipes1This standard is issued under the fixed designation C 1644; the number immediately following the designation indicates the year oforiginal adoption or, in the case of re
2、vision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the minimum performance andmaterial requirements for resilient connecto
3、rs used for connec-tions between reinforced concrete tanks used for septic effluenttreatment/detention, including those referenced in Specifica-tions C 913 and C 1227.1.1.1 These connectors are designed to eliminate leakagebetween the pipe(s) and tank.1.2 A complete metric companion to Specification
4、 C 1644has been developedC 1644M; 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 up to 5 psi
5、 (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 testing of
6、the 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 standard t
7、o establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2A 240/A 240M Specification for Chromium andChromium-Nickel Stainless Steel Plate, Sheet, and Stripfor Pressure Vessels and for General
8、 ApplicationsC 822 Terminology Relating to Concrete Pipe and RelatedProductsC 913 Specification for Precast Concrete Water and Waste-water StructuresC 1227 Specification for Precast Concrete Septic TanksD 395 Test Methods for Rubber PropertyCompressionSetD 412 Test Methods for Vulcanized Rubber and
9、Thermo-plastic ElastomersTensionD 471 Test Method for Rubber PropertyEffect of LiquidsD 543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD 573 Test Method for RubberDeterioration in an AirOvenD 624 Test Method for Tear Strength of ConventionalVulcanized Rubber and Thermopla
10、stic ElastomersD 746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD 883 Terminology Relating to PlasticsD 1149 Test Method for Rubber DeteriorationSurfaceOzone Cracking in a ChamberD 1566 Terminology Relating to RubberD 2240 Test Method for Rubber PropertyDurometerHardn
11、ess3. Terminology3.1 Definitions:3.1.1 Terms relating to plastics and rubber shall be asdefined in Terminologies D 883 and D 1566, respectively.3.1.2 Terms relating to precast concrete tanks, and relatedproducts shall be as defined in Terminology C 822 and asmodified in 3.1.3-3.1.5.3.1.3 connectorth
12、e entire assembly including resilientseals and metallic or nonmetallic mechanical devices, if any,used therein.1This specification is under the jurisdiction ofASTM Committee C27 on PrecastConcrete Structures and is the direct responsibility of Subcommittee C27.30 onPrecast Concrete Septic Tanks and
13、Grease Interceptors.Current edition approved July 1, 2006. Published July 2006.2For 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 o
14、nthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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 conne
15、ction.4. Materials 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
16、splice is used in the manufacture of the seal, itsstrength 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 used for mechanically compressing theresilient portion of the connector against the p
17、ipe, 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 mechanical devices, including castings and bolt as-semblies used in or with the connec
18、tor shall be constructed ofseries 300 stainless steel in accordance with SpecificationA 240.NOTE 2Experience has shown that successful performance of thisproduct depends on the type of bedding and backfill and the care in thefield installation of the tank and connecting pipes. The owner is cautioned
19、to 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 and (2) between the connector and the pipe.The seal between the connector and the tank, and
20、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, toallow for future connection to the structure, be mechanicallyrestrained from movement by means
21、 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 may be installed, each pipe size shallbe tested independently.6.2 The acceptability of th
22、e 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 designand freedom from defects.6.3 When requested, a current certification shall be fur-ni
23、shed 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 connector has been tested and inspected inaccordance with the provisions of Table 1 and Section 7.
24、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 tests is to demonstrate resistance ofthe tank/connector/pipe interface to hydrostatic infil
25、tration 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 wall test section. Install the pipe(s) according to thedirections of the connector manufac
26、turer. 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 inopposite directions (bi-directional) and testing both simulta-neously under each condition belo
27、w, 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 highestconnector. Each condition below shall be tested for a period of5 min with infiltration an
28、d 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 currentTABLE 1 Resilient Material TestsTest Test RequirementsAASTM Test MethodChemical Resistance1 N sulfuric acid No weight loss D 543, at 22
29、C for 48 h1 N hydrochloric acid No weight lossTensile strength 1000 psi, min D 412Elongation at break 350 %, minHardnessB65 from manufacturers specified hardness D 2240 (Type A Durometer)Accelerated oven-aging Decrease of 15 %, max, of original tensile strength,Decrease of 20 %, max, of original elo
30、ngationD 573,706 1C for 7 daysCompression set Decrease of 25 %, max, of original deflection D 395, method B, at 70C for 22 hWater absorption Increase of 10 %, max, of original by weight D 471, immerse 0.75 by 2 in. specimenin distilled water at 70C for 48 hOzone resistance Rating 0 D 1149Low-tempera
31、ture brittle point No fracture at 40C D 746Tear resistance 150 lbf/in., min. D 624, Die BASpecimens shall be prepared from connector specimens, and shall not be prepared from laboratory slabs or by direct molding.BThe connector manufacturer shall select the hardness appropriate for each component of
32、 the connector. Thereafter, the hardness shall comply within the tolerancesin Table 1.C1644062calibration traceable to NIST and have a maximum 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 conn
33、ector permits more than one pipe size,O.D., or type to be installed, each pipe size, O.D., or type shallbe individually tested and certified 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
34、(s) shall besubjected to infiltration and exfiltration test pressures for aperiod of 5 min in each condition.7.3.2 Axial Deflection of the Pipe(s)The pipe(s) shall beaxially deflected at least 7 in any direction and the connec-tor(s) shall be subjected to infiltration and exfiltration testpressures
35、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 be supportedat a point 24-in. from the structure wall. Both the load and thesupport shall
36、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 constant load, the connector(s)shall be subjected to infiltration and exfiltration test p
37、ressuresfor 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 CautionIt is suggested that hydrostatic pressure berelieved while changes are made between different test condi
38、-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 at random locations or at the base ofthe outlet in the form of patches or beads adhering
39、 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 the connector manufacturer with his trade name and thesize designation or part number.9.
40、 Keywords9.1 definitions; design test method; marking; material re-quirements acceptance criteria; product marking; resilientconnectorC1644063FIG. 1 Suggested Methodology for Hydrostatic TestingC1644064ASTM International takes no position respecting the validity of any patent rights asserted in conn
41、ection 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 rights, are entirely their own responsibility.This standard is subject to revision at any time by the respons
42、ible 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 standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful c
43、onsideration 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 Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 10
44、0 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).C1644065
