ASTM C1719-2011(2017) Standard Test Method for Installed Precast Concrete Tanks and Accessories by the Negative Air Pressure (Vacuum) Test Prior to Backfill《回填前采用负风压(真空)试验测定已安装预制混凝.pdf

1、Designation: C1719 11 (Reapproved 2017)Standard Test Method forInstalled Precast Concrete Tanks and Accessories by theNegative Air Pressure (Vacuum) Test Prior to Backfill1This standard is issued under the fixed designation C1719; the number immediately following the designation indicates the year o

2、foriginal adoption or, in 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 test method covers procedures for testing precastconc

3、rete tanks (and installed accessories) used for on-sitewastewater treatment, grease interception, grit/oil separation,water storage, or other applications requiring watertight con-struction and installation. This test method uses partial vacuumto demonstrate the integrity of the installed materials

4、and theconstruction processes.1.2 This test method is intended to be used to demonstratethe condition of the installed system (precast concrete tank andaccessories) prior to backfill.1.3 Testing of the system before backfill is necessary so asto preclude inadvertent structural overloading of the sys

5、temcomponents during the test.NOTE 1Vacuum test criteria presented in this test method are similarto those in general use. The test and criteria have been widely andsuccessfully used in testing manholes as specified in Test Method C1244.1.4 The values stated in inch-pound units are to be regardedas

6、standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of thi

7、s standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principl

8、es for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C822 Terminology Relating to Concrete Pipe and RelatedProductsC1227 Specification for Precast Con

9、crete Septic TanksC1244 Test Method for Concrete Sewer Manholes by theNegative Air Pressure (Vacuum) Test Prior to Backfill3. Terminology3.1 For definitions of terms relating to tanks, see Terminol-ogy C822.4. Summary of Test Method4.1 The tank shall be set in its installed position. Requiredaccesso

10、ries and pipes shall be installed. All openings and pipesentering the tank shall be plugged. A vacuum shall be drawnand vacuum retention over a specified time period is used todetermine the acceptability of the tank and installed accesso-ries.5. Significance and Use5.1 This is not a routine test. Th

11、e values recorded areapplicable only to the tank being tested and at the time oftesting. This test is intended only to demonstrate the sealingeffectiveness of the installed system. Structural design of thetank is defined or demonstrated within the scope of otherapplicable specifications and test met

12、hods, including Specifi-cation C1227.6. Equipment Required6.1 A vacuum device is required and shall be capable ofreliably drawing the required vacuum. Suitable vacuum de-vices include vane- and venturi-type pumps, vehicle vacuumsystems, and high-performance shop-style vacuum cleaners.6.2 A vacuum me

13、asuring device is required and shall be avacuum gauge, mercury manometer, or water manometeraccurate to 0.1 in. (2.5 mm) Hg 1.4 in. (35 mm) H2O. If a1This test method is under the jurisdiction of ASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.30 o

14、n Waterand Wastewater Containers.Current edition approved June 1, 2017. Published July 2017. Originally approvedin 2011. Last previous edition approved in 2011 as C1719 11. DOI: 10.1520/C171911R17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service a

15、t serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accord

16、ance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1gauge is used, it shall be in cur

17、rent calibration to standardstraceable to NIST and shall have a range of no more than 10 in.(254 mm) Hg.6.3 Suitable pipes (or pipe stubs), pipe plugs, and properblocking for same shall be used. If temporary stubs are used,they shall be of the same size and type of pipe as that to be usedin the fina

18、l installation of the system, and shall be placed in thesame orientation as required by the final installation of thesystem.6.4 Suitable hose/tubing, valves, and related vacuumplumbing shall be used to allow the test to be conducted asrequired below.7. Preparation of the System7.1 The tank shall be

19、placed into its final installed position.All section joints of the tank shall be sealed as required by themanufacturer.7.2 All pipes and conduits entering the tank shall beinstalled and temporarily plugged, taking care to securely bracethe pipes and plugs to prevent them from being drawn into thetan

20、k.7.3 Risers and their lids shall be installed to finished leveland sealed as required by the manufacturer.8. Procedure8.1 The test vacuum shall be introduced either through oneof the risers or through an entry pipe, as long as either is sealedagainst loss of vacuum in accordance with the manufactur

21、ersrecommendations.8.2 A vacuum of 4 in. (102 mm) Hg 54 in. (1385 mm)H2O shall be drawn on the system, the valve on the vacuumline of the test head closed, and the vacuum pump shut off.8.3 The system shall pass if the vacuum is maintained for 5min. Should the negative pressure fall below 4 in. (102

22、mm)Hg during the test, the pressure shall be returned to 4 in. (102mm) Hg and the test time restarted. This shall not be prohibitedand the system shall be deemed acceptable if it passes therequirements on subsequent testing.8.4 If the installed system fails the test, the system shall notbe prohibite

23、d from being repaired and retested. Repairs shall bemade by the manufacturers recommended method.9. Report9.1 At the conclusion of the test, a report shall be recordedand shall include at a minimum: Date, time, and location of thetest; staff performing test and anyone else present; test equip-ment u

24、sed and verification of calibration (as required); testset-up; test results and comments; and a positive statement asto the conformance of the system with this test method.9.2 The test report shall be presented to the system owner ortheir representative, and a copy shall be retained by theindividual

25、 performing the test.10. Precision and Bias10.1 No justifiable statement can be made either on theprecision or bias of this procedure, since the test result merelystates whether there is conformance to the criteria of the testspecified.11. Keywords11.1 acceptance criteria; concrete; on-site; tank; t

26、estmethod; vacuum testFIG. 1 Preparation of Tank for Vacuum Testing (Schematic Representation)C1719 11 (2017)2ASTM 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

27、 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 responsible technical committee and must be reviewed every five years andif not revised, either rea

28、pproved 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 consideration at a meeting of theresponsible technical committee, which you may attend. If yo

29、u 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, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual

30、 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 11 (2017)3