1、Designation:C1214M13Standard Test Method forConcrete Pipe Sewerlines by Negative Air Pressure(Vacuum)Test Method(Metric)1This standard is issued under the fixed designation C1214M;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the y
2、ear 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 concretepipe sewerlines,when using the negative air pressure(vacuum)t
3、est method to demonstrate the integrity of the installedmaterial and the construction procedures.This test methodcovers testing of 100 to 900-mm diameter circular concretepipe sewerlines utilizing gasketed joints.NOTE1The user of this specification is advised that methodsdescribed in this test metho
4、d may also be used as a preliminary test toenable the manufacturer or installer to demonstrate the condition of sewerpipe prior to delivery or backfill.Minimum test times presented in Table1 are for pipelines.Holding times for testing an individual pipe may haveto be increased to allow for the accum
5、ulation of leakage when the testedpipe are incorporated into a continuous pipeline.NOTE2The user of this test method is advised that the negative airpressure(vacuum)test criteria presented in this test method are similar tothose in general use.The test and criteria have been used widely andsuccessfu
6、lly in testing smaller diameter pipe.Larger pipe will be acceptedmore conveniently by visual inspection and individual joint testing.NOTE3Test times tabulated and the rate of air loss in this standard arebased on successful testing of installed pipelines.However,since air andwater have different phy
7、sical properties,retests of some pipelines notmeeting field air tests have been successful when tested with water.1.2 This test method is the SI companion to Test MethodC1214.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibilit
8、y of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.See Section 6 forspecific safety precautions.2.Referenced Documents2.1 ASTM Standards:2C822 Terminology Relating to Concrete Pipe and RelatedPr
9、oductsC924 Practice for Testing Concrete Pipe Sewer Lines byLow-Pressure Air Test MethodC969 Practice for Infiltration and Exfiltration AcceptanceTesting of Installed Precast Concrete Pipe Sewer Lines3.Terminology3.1 DefinitionsFor definitions of terms relating to concretepipe,see Terminology C822.4
10、.Summary of Test Method4.1 The sewerline to be tested is plugged.Air is removedfrom the plugged line by a vacuum pump or vacuum reservoir.The amount of vacuum loss is used to determine the accept-ability of the sewerline.5.Significance and Use5.1 This is not a routine test.The values recorded areapp
11、licable only to the sewer being tested and at the time oftesting.6.Safety Precautions6.1 WarningThe user of this test method is advised thatthis test will be dangerous if a line is not prepared properly andproper procedures are not followed.6.2 Access manholes or structures must be ventilated and ai
12、rquality continuously monitored.6.3 No one shall be allowed in or near the manholes duringtesting.7.Preparation of the Sewerline7.1 Where practical,clean the line prior to testing,wet thepipe surface,and eliminate debris.NOTE4The user of this test method is advised that a wetted exteriorpipe surface
13、 is desirable and will produce more consistent test results.Airmay pass through the walls of dry pipe.This can be overcome by wettingthe pipe.Usually,moisture absorbed from the backfill is sufficient to copewith this situation.If the problem persists,segmental testing of the linewill establish if th
14、ere is a significant leak.7.2 Plug all pipe outlets including laterals.Review safetyprecautions in Section 6.1This test method is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.09 on Methodsof Test.Current edition approved July 1,201
15、3.Published December 2013.Originallyapproved in 1992.Last previous edition approved in 2009 as C1214M 02(2009).DOI:10.1520/C1214M-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume informati
16、on,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 States1 8.Procedure8.1 Determine the test time for the sewerline to be tested byusing Table 1.Table 1 has been established using the criteriaspecified in Table 2 and the formulas contained in the Appen-dixes.The test time is the time required for the vacuum to dropfrom 23.6 to 16.9 kPa.NOTE5To provide satisfactory test results,th
