ASTM_C_969_-_17.pdf

Designation:C96917Standard Practice forInfiltration and Exfiltration Acceptance Testing of InstalledPrecast Concrete Pipe Sewer Lines1This standard is issued under the fixed designation C969;the number immediately following the designation indicates the year oforiginal 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This practice covers procedures for testing installedprecast concrete pipe sewer lines using either water infiltrationor exfiltration acceptance limits to demonstrate the integrity ofthe installed materials and construction procedure.1.2 This practice is the inch-pound companion to PracticeC969M;therefore,no SI equivalents are presented in thepractice.NOTE1The owner shall specify the following:who will conduct,observe,and furnish labor,furnish material and measuring devices,andpay for the tests;who is responsible for determining local groundwaterconditions;and which test is to be conducted,that is,an infiltration test oran exfiltration test.NOTE2The user of this practice is advised that test criteria presentedin this practice are similar to those in general use.Pipe,24-in.diameter orlarger,may be accepted by visual inspection when testing for infiltration.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility 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.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles 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 RelatedProducts3.Terminology3.1 DefinitionsFor definitions of terms relating to concretepipe,see Terminology C822.4.Summary of Practice4.1 Determine the groundwater conditions surrounding thesection of sewer to be tested and select the type of test to beconducted.4.2 For the infiltration test,the amount of water leaking intothe sewer line is measured,and the rate of infiltration isdetermined.If the rate is less than or equal to the allowablelimit,the section of sewer tested is acceptable.4.3 For the exfiltration test,the sewer line is filled withwater to the specified test head and the rate of water loss isdetermined.If the rate is less than or equal to the allowablelimit,the section of sewer tested is acceptable.5.Significance and Use5.1 This is not a routine test.The values recorded areapplicable only to the sewer being tested and at the time oftesting.6.Preparation of the Sewer Line6.1 The sewer shall should be free of debris prior to testing.6.2 The manholes,the ends of the branches,laterals,wyesand stubs to be included in the test shall be plugged.All plugsshall be secured to prevent leakage blowout due to testingpressure.7.Procedure7.1 Infiltration Testing:7.1.1 Conduct testing from manhole to manhole or betweenmore than two manholes.The length of main tested shall notexceed 700 ft.7.1.2 Stop all dewatering operations and allow the ground-water to return to its normal level.Infiltration testing shall notbe used unless the groundwater level is at least 2 ft above thecrown of the pipe for the entire length of the test section.7.1.3 Plug all pipe outlets discharging into the upstreammanhole.1This practice is under the jurisdiction of ASTM Committee C13 on ConcretePipe and is the direct responsibility of Subcommittee C13.09 on Methods of Test.Current edition approved April 15,2017.Published May 2017.Originallyapproved in 1982.Last previous edition approved in 2009 as C969 02(2009).DOI:10.1520/C0969-17.2For 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 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 accordance 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.1 7.1.4 Measure the groundwater elevation and determine theaverage head over the test section.7.1.5 Measure infiltration leakage at the outlet of the testsection.Because leakage allowances are small,measurementsare best made by either timing the filling of a small con