1、Designation: A 760/A 760M 09American Association State Highwayand Transportation Officials StandardAASHTO No. M 36/M 36MStandard Specification forCorrugated Steel Pipe, Metallic-Coated for Sewers andDrains1This standard is issued under the fixed designationA 760/A 760M; the number immediately follow
2、ing the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approve
3、d for use by agencies of the Department of Defense.1. Scope1.1 This specification covers corrugated steel pipe intendedfor use for storm water drainage, underdrains, the constructionof culverts, and similar uses. Pipe covered by this specificationis not normally used for the conveyance of sanitary o
4、rindustrial wastes. The steel sheet used in fabrication of the pipehas a protective metallic coating of zinc (galvanizing), alumi-num, 55 % aluminum-zinc alloy, or zinc-5 % aluminum-mischmetal alloy.1.1.1 Steel sheet with zinc and aramid fiber compositecoating may be specified for fabrication of pip
5、e. Pipe madefrom sheet with this composite coating is always furnishedwith an asphalt coating. Therefore, the requirements in thisspecification should be considered as applying to a semifin-ished pipe; the finished pipe must include provisions ofSpecification A 849.NOTE 1Pipe fabricated with zinc an
6、d aramid fiber composite coatedsheet and asphalt post coating may be used for sanitary sewers andindustrial applications. Petroleum products or similar materials in thesewer effluent may affect the performance of the asphalt coating.1.2 The several different metallic coatings may not provideequal pr
7、otection of the base metal against corrosion or abrasionin all environments, or both. Some environments may be sosevere that none of the metallic coatings included in thisspecification will provide adequate protection. Additional pro-tection for corrugated steel pipe can be provided by use ofcoating
8、s applied after fabrication of the pipe as described inSpecificationA 849, or by use of polymer precoated corrugatedsteel pipe as described in Specification A 762/A 762M.1.3 This specification does not include requirements forbedding, backfill, or the relationship between earth cover loadand sheet t
9、hickness of the pipe. Experience has shown that thesuccessful performance of this product depends upon theproper selection of sheet thickness, type of bedding andbackfill, controlled manufacture in the plant, and care in theinstallation. The installation procedure is described in PracticeA 798/A 798
10、M.1.4 This specification is applicable to orders in eitherinch-pound units as A 760 or in SI units as A 760M. Inch-pound units and SI units are not necessarily equivalent. SI unitsare shown in brackets in the text for clarity, but they are theapplicable values when the material is ordered to A 760M.
11、2. Referenced Documents2.1 ASTM Standards:2A 90/A 90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA 153/A 153M Specification for Zinc Coating (Hot-Dip) onIron and Steel HardwareA 307 Specification for Carbon Steel Bolts and Studs,60 000 PSI Tensil
12、e StrengthA 428/A 428M Test Method for Weight Mass of Coatingon Aluminum-Coated Iron or Steel ArticlesA 449 Specification for Hex Cap Screws, Bolts and Studs,Steel, Heat Treated, 120/105/90 ksi Minimum TensileStrength, General UseA 563 Specification for Carbon and Alloy Steel NutsA 563M Specificatio
13、n for Carbon and Alloy Steel Nuts(Metric)A 742/A 742M Specification for Steel Sheet, MetallicCoated and Polymer Precoated for Corrugated Steel PipeA 762/A 762M Specification for Corrugated Steel Pipe,Polymer Precoated for Sewers and DrainsA 780 Practice for Repair of Damaged and Uncoated Areasof Hot
14、-Dip Galvanized CoatingsA 796/A 796M Practice for Structural Design of Corru-gated Steel Pipe, Pipe-Arches, and Arches for Storm andSanitary Sewers and Other Buried ApplicationsA 798/A 798M Practice for Installing Factory-Made Corru-gated Steel Pipe for Sewers and Other Applications1This specificati
15、on is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.17 on Corrugated Steel Pipe Specifications.Current edition approved May 1, 2009. Published June 2009. Originallyapproved in 1979. Last previous edition app
16、roved in 2006 as A 760/A 760M - 06.2For 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.1Copyright ASTM Internatio
17、nal, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.A 849 Specification for Post-Applied Coatings, Pavings,and Linings for Corrugated Steel Sewer and Drainage PipeA 885/A 885M Specification for Steel Sheet, Zinc and Ara-mid Fiber Composite Coated for Corrugated S
18、teel Sewer,Culvert, and Underdrain Pipe3A 929/A 929M Specification for Steel Sheet, Metallic-Coated by the Hot-Dip Process for Corrugated Steel PipeB 633 Specification for Electrodeposited Coatings of Zincon Iron and SteelB 695 Specification for Coatings of Zinc MechanicallyDeposited on Iron and Ste
19、elC 443 Specification for Joints for Concrete Pipe and Man-holes, Using Rubber GasketsC 443M Specification for Joints for Concrete Pipe andManholes, Using Rubber Gaskets MetricD 1056 Specification for Flexible Cellular MaterialsSponge or Expanded Rubber,F 568M Specification for Carbon andAlloy Steel
20、 ExternallyThreaded Metric Fasteners (Metric)2.2 AASHTO Standards:4T241 Test for Helical Continuous Welded Seam CorrugatedSteel PipeT249 Test for Helical Lock Seam Corrugated Pipe3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 fabricatorthe producer of the pipe.3.1.2 manufactu
21、rerthe producer of the sheet.3.1.3 minimized coating structure a coating characterizedby a finer metallurgical coating structure obtained by a treat-ment designed to restrict the formation of the normal coarse-grain structure formed during solidification of the Zn-5Al-MMalloy coating.3.1.4 purchaser
22、the purchaser of the finished product.3.1.5 regular coating structure the normal coating struc-ture resulting from unrestricted grain growth during normalsolidification of the Zn-5 Al-MM alloy coating.3.2 Abbreviations:3.2.1 55 Al-Zn55 % aluminum-zinc.3.2.2 MMmischmetal.3.2.3 Zn-5 Al-MMzinc-5 % alum
23、inum-mischmetal.4. Classification4.1 The corrugated steel pipe covered by this specification isclassified as follows:4.1.1 Type IThis pipe shall have a full circular crosssection, with a single thickness of corrugated sheet, fabricatedwith annular (circumferential) or helical corrugations.4.1.2 Type
24、 IAThis pipe shall have a full circular crosssection, with an outer shell of corrugated sheet and an innerliner of smooth (uncorrugated) sheet, fabricated with helicalcorrugations and lock seams.4.1.3 Type IRThis pipe shall have a full circular crosssection with a single thickness of smooth sheet, f
25、abricated withhelical ribs projecting outwardly.4.1.4 Type ISThis pipe shall have a full circular crosssection with a single thickness of smooth sheet, fabricated withhelical ribs projecting outwardly, and shall also have metallic-coated steel inserts placed in the ribs so that the inside surfaceof
26、the pipe is essentially smooth.4.1.5 Type IIThis pipe shall be a Type I pipe which hasbeen reformed into a pipe-arch, having an approximately flatbottom.4.1.6 Type IIAThis pipe shall be a Type IApipe which hasbeen reformed into a pipe-arch, having an approximately flatbottom.4.1.7 Type IIRThis pipe
27、shall be a Type IR pipe whichhas been reformed into a pipe-arch, having an approximatelyflat bottom.4.1.8 Type IISThis pipe shall be a Type IS pipe which hasbeen reformed into a pipe-arch, having an approximately flatbottom.4.1.9 Type IIIThis pipe, intended for use as underdrains orfor underground d
28、isposal of water, shall be a Type I pipe whichhas been perforated to permit the inflow or outflow of water.4.1.10 Type IIIAThis pipe, intended for use as underd-rains, shall consist of a semicircular cross section, having asmooth (uncorrugated) bottom with a corrugated top shield.4.2 Perforations in
29、 Type III pipe are included in threeclasses as described in 8.3.2.4.3 Zn-5 Al-MM alloy-coated material is available in twocoating classes, or structures, as follows:4.3.1 Class AMinimized coating structure.4.3.2 Class BRegular coating structure.5. Ordering Information5.1 Orders for material to this
30、specification shall include thefollowing information as necessary, to adequately describe thedesired product.5.1.1 Name of material (corrugated steel pipe),5.1.2 Type of metallic coating (zinc, aluminum, 55 Al-Znalloy, Zn-5 Al-MM alloy, or zinc and aramid fiber compositecoating (see 6.1).5.1.2.1 For
31、 Zn-5A1-MM coating, the class coating structure(Class A minimized, etc.) (4.3).5.1.3 ASTM designation and year of issue, as A 760-_for inch-pound units or as A 760M-_ for SI units.5.1.4 Type of pipe (4.1),5.1.5 Diameter of circular pipe (Table 1), or span and rise ofpipe-arch section (Tables 2-9),5.
32、1.6 Length, either total length or length of each piece andnumber of pieces,5.1.7 Description of corrugations (7.2),5.1.8 Sheet thickness (8.1.2),5.1.9 For Type I and Type II pipe, the pipe fabricationmethod, whether with annular corrugations or helical corruga-tions (see 7.1.1),NOTE 2Pipe with annu
33、lar corrugations with spot welded or rivetedseams is designed by different criteria compared to pipe with helicalcorrugations. Pipe with annular corrugations must consider seam strength.Therefore, consideration of the method of fabrication is important when3Withdrawn. The last approved version of th
34、is historical standard is referencedon www.astm.org.4Available from American Association of State Highway and TransportationOfficials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,http:/www.transportation.org.A 760/A 760M 092pipe is installed under certain conditions of loading.5
35、.1.10 For Types IS and IIS pipe, the type of insert required,whether from metallic coated steel sheet or from polymer-precoated metallic-coated steel sheet (see 6.6 and 8.1.2).NOTE 3Aluminized steel Type 2 inserts are not available with apolymer coating5.1.11 When zinc and aramid fiber composite coa
36、ted sheetis used for fabrication of pipe, the type of asphalt coating (1.1.1and 8.5),NOTE 4See Specification A 849 for additional ordering informationappropriate to post-coatings on pipe.TABLE 1 Pipe SizesNominalInsideDiameterCorrugation SizesARibbed PipeMinimumOutsideCircumferenceBin. mm112 by14 in
37、.38by6.5mm223 by12 in.68by13mm3by1in.75by25mm5by1in.125 by 25 mm34 by34 by 712 in.19by19by190mm34 by1by1112 in.19by25by292mm34 by1by812 in.19by25by216mmin. mm4 100 X 11.4 2646 150 X 17.7 4418 200 X 24.0 59810 250 X 30.2 75512 300 X X 36.5 91215 375 X X XC46.0 114818 450 X X X X X 55.4 138321 500 X X
38、 X X 64.8 162024 600 X X X X 74.2 185427 675 X X X X 83.6 209130 750 X X X X 93.1 248333 825 X X X X 102.5 256136 900 X X X X X X 111.9 279742 1050 X X X X X X 130.8 326948 1200 X X X X X X 149.6 373954 1350 X X X X X X 168.4 420960 1500 X X X X X X 187.0 467566 1650 X X X X X X 205.7 514272 1800 X
39、X X X X X 224.3 560978 1950 X X X X X X 243.0 607584 2100 X X X X X X 261.7 654290 2250 X X X X X 280.3 700896 2400 X X X X X 299.0 7475102 2550 X X X X X 317.6 7941108 2700 X X X X X 336.3 8408114 2850 X X X X 355.0 8874120 3000 X X X X 373.6 9341126 3150 X X X 392.3 9807132 3300 X X X 410.9 102741
40、38 3450 X X X 429.6 10740144 3600 X X X 448.3 11207AAn“ X” indicates standard corrugation sizes for each nominal diameter of pipe.BMeasured in valley of annular corrugations. Not applicable to helically corrugated pipe.CAdditional size for Type IS pipe.TABLE 2 Pipe Arch Requirements223 by12-in. Corr
41、ugations(A 760)Pipe ArchSize, in.EquivalentDiameter,in.Span,Ain.Rise,Ain.MinimumCornerRadius, in.MaximumB,Bin.17 by 13 15 17 13 3 51421 by 15 18 21 15 3 624 by 18 21 24 18 3 71428 by 20 24 28 20 3 835 by 24 30 35 24 3 91242 by 29 36 42 29 312 101249 by 33 42 49 33 4 111257 by 38 48 57 38 5 131264 by
42、 43 54 64 43 6 1571 by 47 60 71 47 7 161277 by 52 66 77 52 8 1883 by 57 72 83 57 9 20AA tolerance of 61 in. or 2 % of equivalent diameter, whichever is greater, ispermissible in span and rise.BB is defined as the vertical dimension from a horizontal line across the widestportion of the arch to the l
43、owest portion of the base.TABLE 3 Pipe Arch Requirements68 by 13-mmCorrugations A 760MPipe ArchSize, mmEquivalentDiameter,mmSpan,AmmRise,AmmMinimumCornerRadius, mmMaximumB,Bmm430 by 330 375 430 330 75 135530 by 380 450 530 380 75 155610 by 460 525 610 460 75 185710 by 510 600 710 510 75 205780 by 56
44、0 675 780 560 75 225885 by 610 750 870 630 75 240970 by 690 825 970 690 75 2551060 by 740 900 1060 740 90 2651240 by 840 1050 1240 840 100 2901440 by 970 1200 1440 970 130 3451620 by 1100 1350 1620 1100 155 3801800 by 1200 1500 1800 1200 180 4201950 by 1320 1650 1950 1320 205 4602100 by 1450 1800 21
45、00 1450 230 510AA tolerance of 625 mm or 2 % of equivalent diameter, whichever is greater, ispermissible in span and rise.BB is defined as the vertical dimension from a horizontal line across the widestportion of the arch to the lowest portion of the base.A 760/A 760M 0935.1.12 Joining systems, incl
46、uding the type of joint from 9.1and gasket, if required (If no joining system is specified, thefabricator shall select the system.),5.1.13 For Type III pipe, class of perforations, if other thanClass 1 (8.3.2),5.1.14 Certification, if required (14.1), and5.1.15 Special requirements.6. Materials and
47、Manufacture6.1 Steel Sheet for PipeAll pipe fabricated under thisspecification shall be formed from zinc-coated sheet,aluminum-coated sheet, 55 % aluminum-zinc alloy-coatedsheet, zinc-5 % aluminum-mischmetal alloy-coated sheet allconforming to Specification A 929/A 929M, or zinc and ara-mid fiber co
48、mposite coated sheet conforming to SpecificationA 885/A 885M. If the type of metallic coating is not stated inthe order, zinc-coated sheet conforming to SpecificationA 929/A 929M shall be used. All pipe furnished on the order shallhave the same metallic coating, unless otherwise specified.6.2 Steel
49、Sheet for Coupling BandsThe sheet used infabricating coupling bands shall have the same coating andshall conform to the same specification listed in 6.1 as that usedfor fabrication of the pipe furnished under the order.6.3 RivetsThe rivets used in riveted pipe shall be of thesame material as the base metal specified for the corrugatedsheets. They shall be thoroughly galvanized or sherardized. Ifbolts and nuts are substituted for rivets (see 7.3.1), they shallmeet the following requirements:Bolts Nuts
