1、Designation:C444M17Standard Specification forPerforated Concrete Pipe(Metric)1This standard is issued under the fixed designation C444M;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
2、 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 specification covers perforated concrete pipe in-tended to be used for
3、 underdrainage.1.2 This specification is the SI companion to SpecificationC444.1.3 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 determi
4、ne 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
5、 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.Classification
6、4.1 Pipe manufactured to this specification shall be of twoclasses,Type 1 and Type 2,describing two arrangements ofperforations for pipe manufactured to the standard specifica-tions for plain or reinforced concrete pipe,and their classifi-cations.4.1.1 Type 1 perforated pipe shall have circular perf
7、orationsconforming to 6.1 and Table 1.4.1.2 Type 2 perforated pipe shall have slotted perforationsconforming to 6.2 and Table 2.4.1.3 It is intended that perforated pipe shall be specified byreference to this specification and the specification for the typeand class of pipe desired.NOTE1Example:“Per
8、forated concrete pipe shall conform to therequirements of Specification C444M Type 2,and all applicable require-ments of Specification C14M,Class 2.”5.Basis of Acceptance5.1 The acceptability of the pipe shall be determined by theresults of all applicable tests(Note 2)prescribed for the typeand clas
9、s of pipe specified,and by inspection to determinewhether the pipe conforms to this specification as to design andfreedom from defects.NOTE2It is intended that all tests will be applicable except thosehaving to do with permeability and the hydrostatic test.6.Perforations6.1 Type 1Perforations shall
10、be circular,not more than 8mm or less than 5 mm in diameter,and arranged in rowsparallel to the axis of the pipe.Perforations shall be 75 mmcenter-to-center,along rows,with no less than 13 mm of coverover any reinforcing steel.The spigot or tongue end shall notbe perforated for a length equal to the
11、 depth of the socket,ordepth of the groove plus 19 mm and perforations shall continueat uniform spacing along the length of the barrel.The numberof rows shall be as shown in Table 1.The rows shall be spacedover not more than 165 of circumference.Rows shall besymmetrically arranged with respect to th
12、e intended top orbottom of the pipe.6.2 Type 2Slots shall be circumferential in direction,notmore than 5 mm or less than 3 mm in width,and of the lengthsshown in Table 2.There shall be two rows of slots,spaced 165apart,and centered,in the case of elliptically reinforced pipe,about the minor axis of
13、the reinforcing.Slots shall be spaced asshown in Table 2,except as modified herein for plain-end pipewith no less than 13 mm of cover over any reinforcing steel.The distance from the spigot end,or from the shoulder of thetongue end,to the first pair of slots shall be not more than 251This specificat
14、ion is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.01 onNon-Reinforced Concrete Sewer,Drain and Irrigation Pipe.Current edition approved April 1,2017.Published May 2017.Originallyapproved in 1980.Last previous edition approved in
15、2009 as C444M 03(2009).DOI:10.1520/C0444M-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 Intern
16、ational,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 mm greater than the specified slot spacing.Slots shall continueat uniform spacing along the lengt
