1、Designation:A71608(Reapproved 2014)Standard Specification forDuctile Iron Culvert Pipe1This standard is issued under the fixed designation A716;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 par
2、entheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers 14 to 64-in.ductile-iron cul-vert pipe centrifugally cast.1.2 The values stated in inch-pound units are to be regardedas stand
3、ard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The following safety hazards caveat pertains only to thetest methods portions,Sections 6 and 7,of this specification-:This standard does not purport t
4、o address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E8 Test Methods
5、for Tension Testing of Metallic MaterialsE23 Test Methods for Notched Bar Impact Testing of Me-tallic Materials2.2 ANSI/AWWA Standards:C 150A21.50 Thickness Design of Ductile-Iron Pipe3C 151A21.51Ductile-Iron Pipe Centrifugally Cast,forWater32.3 AASHTO Standard:AASHTO T-99 Moisture Density Relations
6、 of Soils Using a5.5-lb(2.5-kg)Rammer 12-in.(305-mm)Drop43.General Requirements3.1 The pipe shall be manufactured of ductile iron thatmeets the requirements of Sections 6 and 7.See Table 1 forpipe thicknesses and weights;see also Fig.1.3.2 The pipe shall be provided with suitable joints,such aspush-
7、on or other types of joints that prevent lateral displace-ment.Plain-end pipe for use with suitable couplings may befurnished.3.3 Unless otherwise specified,pipe shall have a nominallength of 18 or 20 ft(5.5 or 6.1 m).Amaximum of 20%of thetotal number of pipe of each size specified in an order may b
8、efurnished as much as 24 in.(610 mm)shorter than the nominallaying length,and an additional 10%may be furnished asmuch as in 6 in.(152 mm)shorter than the nominal layinglength.4.Tolerances or Permitted Variations4.1 DimensionsThe spigot end,bell,and socket of thepipe and the accessories shall be gag
9、ed with suitable gages atsufficiently frequent intervals to assure that the dimensionscomply with the requirements of this specification.The small-est inside diameter(ID)of the sockets and the outside diameter(OD)of the spigot ends shall be tested with circular gages.Other socket dimensions shall be
10、 gauged as may be appropri-ate.4.2 ThicknessMinus thickness tolerances of pipe shall notexceed those shown below:Nominal Size,in.Minus Tolerance,in.(mm)14 to 420.07(1.8)480.08(2.0)54 to 640.09(2.3)NOTE1An additional minus tolerance of 0.02 in(0.05 mm)shall bepermitted along the barrel of the pipe fo
11、r a distance not to exceed 12 in.(305 mm).4.3 WeightThe weight of any single pipe shall not be lessthan the tabulated weight by more than 5%.5.Coating5.1 All pipe shall be coated inside and outside with anasphaltic or equivalent material approximately 1 mil(0.025mm)thick.The finished coating shall b
12、e continuous andsmooth,neither brittle when cold,nor sticky when exposed tothe sun,and shall be strongly adherent to the pipe.1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.12 on Pipes andTubes.Current edition
13、approved Oct.1,2014.Published October 2014.Originallyapproved in 1975.Last previous edition approved in 2008 as A716 08.DOI:10.1520/A0716-08R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volum
14、e information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from American Association of State Highway and TransportationOfficials(AASHTO),444 N.Capit
15、ol St.,NW,Suite 249,Washington,DC 20001,http:/www.transportation.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Acceptance Tests6.1 The standard acceptance tests for the physical charac-teristics of the pipe shall be as follows:6.2
16、 Tension TestUnless otherwise specified by thepurchaser,a tension test specimen shall be cut longitudinally orcircumferentially from the midsection of the pipe wall.In caseof dispute,the specimen shall be cut longitudinally.Thisspecimen shall be machined and tested in accordance with Fig.2 and Test Methods E8.The yield strength shall be determinedby the 0.2%offset,halt-of-pointer,or extension-under-loadmethods.If check tests are to be made,the 0.2%offset methodshall be used.All specimens shall b
