1、Designation: C76 12aStandard Specification forReinforced Concrete Culvert, Storm Drain, and Sewer Pipe1This standard is issued under the fixed designation C76; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revisi
2、on. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers reinforced concrete pi
3、peintended to be used for the conveyance of sewage, industrialwastes, and storm water, and for the construction of culverts.1.2 This specification is the inch-pound companion toSpecification C76M; therefore, no SI equivalents are presentedin this specification. Reinforced concrete pipe that conform
4、tothe requirements of C76M, are acceptable under this Specifi-cation C76 unless prohibited by the Owner.NOTE 1This specification is a manufacturing and purchase specifica-tion only, and does not include requirements for bedding, backfill, or therelationship between field load condition and the stren
5、gth classification ofpipe. However, experience has shown that the successful performance ofthis product depends upon the proper selection of the class of pipe, typeof bedding and backfill, and care that installation conforms to theconstruction specifications. The owner of the reinforced concrete pip
6、especified herein is cautioned that he must correlate the field requirementswith the class of pipe specified and provide inspection at the constructionsite.NOTE 2Attention is called to the specification for reinforced concreteD-load culvert, storm drain, and sewer pipe (Specification C655).2. Refere
7、nced Documents2.1 ASTM Standards:2A36/A36M Specification for Carbon Structural SteelA615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA706/A706M Specification for Low-Alloy Steel Deformedand Plain Bars for Concrete ReinforcementA1064/A1064M Specification for
8、 Steel Wire and WeldedWire Reinforcement, Plain and Deformed, for ConcreteC33 Specification for Concrete AggregatesC76M Specification for Reinforced Concrete Culvert, StormDrain, and Sewer Pipe (Metric)C150 Specification for Portland CementC260 Specification for Air-Entraining Admixtures for Con-cre
9、teC309 Specification for Liquid Membrane-Forming Com-pounds for Curing ConcreteC494/C494M Specification for Chemical Admixtures forConcreteC497 Test Methods for Concrete Pipe, Manhole Sections, orTileC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or Calci
10、nedNatural Pozzolan for Use in ConcreteC655 Specification for Reinforced Concrete D-LoadCulvert, Storm Drain, and Sewer PipeC822 Terminology Relating to Concrete Pipe and RelatedProductsC989 Specification for Slag Cement for Use in Concrete andMortarsC1017/C1017M Specification for Chemical Admixture
11、s forUse in Producing Flowing ConcreteC1116 Specification for Fiber-Reinforced Concrete andShotcrete3. Terminology3.1 DefinitionsFor definitions of terms relating to con-crete pipe, see Terminology C822.4. Classification4.1 Pipe manufactured in accordance with this specificationshall be of five clas
12、ses identified as Class I, Class II, Class III,Class IV, and Class V. The corresponding strength require-ments are prescribed in Tables 1-5.5. Basis of Acceptance5.1 Unless otherwise designated by the owner at the time of,or before placing an order, there are two separate and alterna-tive bases of a
13、cceptance. Independent of the method ofacceptance, the pipe shall be designed to meet both the 0.01-in.crack and ultimate strength requirements specified in Tables1-5.5.1.1 Acceptance on the Basis of Plant Load-Bearing Tests,Material Tests, and Inspection of Manufactured Pipe for Visual1This specifi
14、cation is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.02 onReinforced Sewer and Culvert Pipe.Current edition approved Sept. 15, 2012. Published October 2012. Originallyapproved in 1930. Last previous edition approved in 2012 as C7
15、6 12. DOI:10.1520/C0076-12A.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
16、 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Defects and ImperfectionsAcceptability of the pipe in alldiameters and classes produced in accordance with 7.1 or 7.2shall be determined by the results of the three-edge bearingtests as defined in 11.3.1; by such materi
17、al tests as are requiredin 6.2, 6.3, 6.5, and 6.6; by an absorption test of the concretefrom the wall of the pipe as required in 11.9; and by visualinspection of the finished pipe to determine its conformancewith the accepted design and its freedom from defects.5.1.2 Acceptance on the Basis of Mater
18、ial Tests and Inspec-tion of Manufactured Pipe for Defects and ImperfectionsAcceptability of the pipe in all diameters and classes producedin accordance with 7.1 or 7.2 shall be determined by the resultsof such material tests as are required in 6.2, 6.3, 6.5, and 6.6;by crushing tests on concrete co
19、res or cured concrete cylinders;by an absorption test of the concrete from the wall of the pipefor each mix design that is used on an order; and by inspectionof the finished pipe including amount and placement ofreinforcement to determine its conformance with the accepteddesign and its freedom from
20、defects.5.1.3 When agreed upon by the owner and manufacturer,any portion or any combination of the tests itemized in 5.1.1 or5.1.2 may form the basis of acceptance.5.2 Age for AcceptancePipe shall be considered ready foracceptance when it conforms to the requirements as indicatedby the specified tes
21、ts.6. Materials6.1 The aggregate shall be so sized, graded, proportioned,and mixed with such proportions of Portland cement, blendedhydraulic cement, or Portland cement and supplementarycementing materials, or admixtures, if used, or a combinationthereof, and water to produce a homogenous concrete m
22、ixtureof such quality that the pipe will conform to the test and designrequirements of the specification. In no case, however, shall theproportion of Portland cement, blended hydraulic cement, or acombination of Portland cement and supplementary cementingmaterials be less than 470 lb/yd3.TABLE 1 Des
23、ign Requirements for Class I Reinforced Concrete PipeANOTE 1See Section 5 for basis of acceptance specified by the owner.The strength test requirements in pounds-force per linear foot of pipe under the three-edge-bearing method shall be either the D-load (test loadexpressed in pounds-force per linea
24、r foot per foot of diameter) to produce a 0.01-in. crack, or the D-loads to produce the 0.01-in. crack and the ultimateload as specified below, multiplied by the internal diameter of the pipe in feet.D-load to produce a 0.01-in. crack 800D-load to produce the ultimate load 1200InternalDesignatedDiam
25、eter,in.Reinforcement, in.2/linear ft of pipe wallWall A Wall BConcrete Strength, 4000 psi Concrete Strength, 4000 psiWallThickness,in.CircularReinforcementBEllipticalReinforcementCWallThickness,in.CircularReinforcementBEllipticalReinforcementCInnerCageOuterCageInnerCageOuterCage60 5 0.24 0.15 0.27
26、6 0.21 0.12 0.2366 512 0.30 0.18 0.33 612 0.24 0.15 0.2772 6 0.35 0.21 0.39 7 0.29 0.17 0.3278 612 0.40 0.24 0.44 712 0.32 0.19 0.3684 7 0.45 0.27 0.50 8 0.36 0.21 0.4190 712 0.49 0.29 0.54 812 0.41 0.24 0.4596 8 0.54 0.32 0.60 9 0.45 0.27 0.51Concrete Strength, 5000 psi102 812 0.63 0.38 Inner Circu
27、larPlus Elliptical0.240.38912 0.54 0.32 Inner CircularPlus Elliptical0.210.32108 9 0.68 0.41 Inner CircularPlus Elliptical0.270.4110 0.60 0.36 Inner CircularPlus Elliptical0.240.36114A. . . .A. . . .120A. . . .A. . . .126A. . . .A. . . .132A. . . .A. . . .138A. . . .A. . . .144A. . . .A. . . .AFor m
28、odified or special designs see 7.2 or with the permission of the owner utilize the provisions of Specification C655. Steel areas may be interpolated between thoseshown for variations in diameter, loading, or wall thickness. Pipe over 96 in. in diameter shall have two circular cages or an inner circu
29、lar plus one elliptical cage.BAs an alternative to designs requiring both inner and outer circular cages the reinforcement may be positioned and proportioned in either of the following manners:An inner circular cage plus an elliptical cage such that the area of the elliptical cage shall not be less
30、than that specified for the outer cage in the table and the total areaof the inner circular cage plus the elliptical cage shall not be less than that specified for the inner cage in the table,An inner and outer cage plus quadrant mats in accordance with Fig. 1,orAn inner and outer cage plus an ellip
31、tical cage in accordance with Fig. 2.CElliptical and quadrant steel must be held in place by means of holding rods, chairs, or other positive means throughout the entire casting operation.C76 12a26.2 Cementitious materials:6.2.1 CementCement shall conform to the requirements ofSpecification C150, or
32、 shall be portland blast-furnace slagcement, or slag modified portland cement, or portland-pozzolan cement conforming to the requirements of Specifica-tion C595, except that the pozzolan constituent in the Type IPportland-pozzolan cement shall be fly ash.6.2.2 Ground Granulated Blast-Furnace Slag (G
33、GBFS)GGBFS shall conform to the requirements of Grade 100 or 120of Specification C989.6.2.3 Fly AshFly ash shall conform to the requirements ofClass F or Class C of Specification C618.6.2.4 Allowable Combinations of Cementitious MaterialsThe combination of cementitious materials used in the concrete
34、shall be one of the following:6.2.4.1 Portland cement only,6.2.4.2 Portland blast furnace slag cement only,6.2.4.3 Slag modified portland cement only,6.2.4.4 Portland pozzolan cement only,TABLE 2 Design Requirements for Class II Reinforced Concrete PipeANOTE 1See Section 5 for basis of acceptance sp
35、ecified by the owner.The strength test requirements in pounds-force per linear foot of pipe under the three-edge-bearing method shall be either the D-load (test loadexpressed in pounds-force per linear foot per foot of diameter) to produce a 0.01-in. crack, or the D-loads to produce the 0.01-in. cra
36、ck and the ultimateload as specified below, multiplied by the internal diameter of the pipe in feet.D-load to produce a 0.01-in. crack 1000D-load to produce the ultimate load 1500InternalDesig-natedDiameter,in.Reinforcement, in.2/linear ft of pipe wallWall A Wall B Wall CConcrete Strength, 4000 psi
37、Concrete Strength, 4000 psi Concrete Strength, 4000 psiWallThick-ness,in.CircularReinforcementBEllipticalReinforcementCWallThick-ness,in.CircularReinforcementBEllipticalReinforcementCWallThick-ness,in.CircularReinforcementCEllipticalReinforcementDInnerCageOuterCageInnerCageOuterCageInnerCageOuterCag
38、e12 134 0.07B. . 2 0.07B. . 234 0.07B. .15 178 0.07B. . 214 0.07B. . 3 0.07B. .18 2 0.07B. . . 0.07B212 0.07B. . . 0.07B314 0.07B. . . 0.07B21 214 0.12 . . . 0.10 234 0.07B. . . 0.07B312 0.07B. . . 0.07B24 212 0.12 . . . 0.11 3 0.07B. . . 0.07B334 0.07B. . . 0.07B27 258 0.15 . . . 0.12 314 0.12 . .
39、. 0.11 4 0.07B. . . 0.07B30 234 0.15 . . . 0.14 312 0.14 . . . 0.12 414 0.07B. . . 0.07B33 278 0.16 . . . 0.15 334 0.15 . . . 0.12 412 0.07B. . . 0.07B36 3 0.14 0.08 0.15 4E0.12 0.07 0.12 434E0.07 0.07 0.0842 312 0.16 0.10 0.18 412 0.15 0.09 0.17 514 0.10 0.07 0.1148 4 0.21 0.12 0.23 5 0.18 0.11 0.2
40、0 534 0.14 0.08 0.1554 412 0.24 0.15 0.27 512 0.21 0.12 0.24 614 0.17 0.10 0.1960 5 0.30 0.18 0.33 6 0.24 0.15 0.27 634 0.21 0.12 0.2466 512 0.35 0.21 0.39 612 0.31 0.19 0.34 714 0.24 0.15 0.2772 6 0.41 0.24 0.45 7 0.35 0.21 0.39 734 0.30 0.18 0.3378 612 0.45 0.27 0.51 712 0.40 0.24 0.44 814 0.35 0.
41、21 0.3984 7 0.51 0.31 0.57 8 0.45 0.27 0.51 834 0.41 0.24 0.4590 712 0.57 0.34 0.63 812 0.51 0.31 0.57 914 0.48 0.29 0.5396 8 0.62 0.36 0.69 9 0.57 0.34 0.63 934 0.55 0.33 0.60Concrete Strength, 5000 psi102 812 0.76 0.45 InnerCircular0.30 912 0.68 0.41 InnerCircular0.27 1014 0.62 0.36 InnerCircular0
42、.24Plus El-liptical0.45 Plus El-liptical0.41 Plus El-liptical0.36108 9 0.85 0.51 InnerCircular0.34 10 0.76 0.45 InnerCircular0.30 1034 0.70 0.42 InnerCircular0.27Plus El-liptical0.51 Plus El-liptical0.45 Plus El-liptical0.42114A. . . .A. . . .A. . . .120A. . . .A. . . .A. . . .126A. . . .A. . . .A.
43、. . .132A. . . .A. . . .A. . . .138A. . . .A. . . .A. . . .144A. . . .A. . . .A. . . .AFor modified or special designs see 7.2 or with the permission of the owner utilize the provisions of Specification C655. Steel areas may be interpolated between thoseshown for variations in diameter, loading, or
44、wall thickness. Pipe over 96 in. in diameter shall have two circular cages or an inner circular plus one elliptical cage.BFor these classes and sizes, the minimum practical steel reinforcement is specified. The specified ultimate strength of non-reinforced pipe is greater than the minimumspecified s
45、trength for the equivalent diameters.CAs an alternative to designs requiring both inner and outer circular cages the reinforcement may be positioned and proportioned in either of the following manners:An inner circular cage plus an elliptical cage such that the area of the elliptical cage shall not
46、be less than that specified for the outer cage in the table and the total areaof the inner circular cage plus the elliptical cage shall not be less than that specified for the inner cage in the table,An inner and outer cage plus quadrant mats in accordance with Fig. 1 ,orAn inner and outer cage plus
47、 an elliptical cage in accordance with Fig. 2.DElliptical and quadrant steel must be held in place by means of holding rods, chairs, or other positive means throughout the entire casting operation.EAs an alternative, single cage reinforcement may be used. The reinforcement area in square in. per lin
48、ear foot shall be 0.20 for wall B and 0.16 for wall C.C76 12a36.2.4.5 A combination of portland cement and groundgranulated blast-furnace slag,6.2.4.6 A combination of portland cement and fly ash, orTABLE 3 Design Requirements for Class III Reinforced Concrete PipeANOTE 1See Section 5 for basis of a
49、cceptance specified by the owner.The strength test requirements in pounds-force per linear foot of pipe under the three-edge-bearing method shall be either the D-load (test loadexpressed in pounds-force per linear foot per foot of diameter) to produce a 0.01-in. crack, or the D-loads to produce the 0.01-in. crack and the ultimateload as specified below, multiplied by the internal diameter of the pipe in feet.D-load to produce a 0.01-in. crack 1350D-load to produce the ultimate load 2000InternalDesignatedDiameter, in.
