ASTM C361M-22

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C361M −22
Standard Specification for
Reinforced Concrete Low-Head Pressure Pipe (Metric)
This standard is issued under the fixed designation C361M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 approved for use by agencies of the U.S. Department of Defense.
1. Scope* A497/A497M Specification for Steel Welded Wire
Reinforcement, Deformed, for Concrete (Withdrawn
1.1 This specification covers reinforced concrete pipe in-
2013)
tended to be used for the construction of pressure pipelines
A575 Specification for Steel Bars, Carbon, Merchant
with low internal hydrostatic heads generally not exceeding
Quality, M-Grades
375 kPa.
A576Specification for Steel Bars, Carbon, Hot-Wrought,
1.2 This specification is the SI companion to Specification
Special Quality
C361. It is compatible in technical content.
A615/A615MSpecificationforDeformedandPlainCarbon-
Steel Bars for Concrete Reinforcement
NOTE 1—Field tests on completed portions of the pipeline are not
coveredbythisspecificationforthemanufactureofthepipebutshouldbe A675/A675MSpecification for Steel Bars, Carbon, Hot-
included in specifications for pipe laying.
Wrought, Special Quality, Mechanical Properties
1.3 This international standard was developed in accor- A1008/A1008MSpecification for Steel, Sheet, Cold-Rolled,
dance with internationally recognized principles on standard-
Carbon, Structural, High-Strength Low-Alloy, High-
ization established in the Decision on Principles for the StrengthLow-AlloywithImprovedFormability,Required
Development of International Standards, Guides and Recom-
Hardness, Solution Hardened, and Bake Hardenable
mendations issued by the World Trade Organization Technical A1011/A1011MSpecification for Steel, Sheet and Strip,
Barriers to Trade (TBT) Committee.
Hot-Rolled, Carbon, Structural, High-Strength Low-
Alloy, High-Strength Low-Alloy with Improved
2. Referenced Documents
Formability, and Ultra-High Strength
C31/C31MPractice for Making and Curing Concrete Test
2.1 ASTM Standards:
Specimens in the Field
A27/A27MSpecification for Steel Castings, Carbon, for
C33/C33MSpecification for Concrete Aggregates
General Application
C39/C39MTestMethodforCompressiveStrengthofCylin-
A36/A36MSpecification for Carbon Structural Steel
drical Concrete Specimens
A82/A82MSpecification for Steel Wire, Plain, for Concrete
C150/C150MSpecification for Portland Cement
Reinforcement (Withdrawn 2013)
C260/C260MSpecification for Air-Entraining Admixtures
A185/A185M Specification for Steel Welded Wire
for Concrete
Reinforcement, Plain, for Concrete (Withdrawn 2013)
C309Specification for Liquid Membrane-Forming Com-
A283/A283MSpecification for Low and Intermediate Ten-
pounds for Curing Concrete
sile Strength Carbon Steel Plates
C497MTest Methods for Concrete Pipe, Concrete Box
A496/A496MSpecification for Steel Wire, Deformed, for
Sections, Manhole Sections, or Tile (Metric)
Concrete Reinforcement (Withdrawn 2013)
C595/C595MSpecification for Blended Hydraulic Cements
C618Specification for Coal Fly Ash and Raw or Calcined
Natural Pozzolan for Use in Concrete
This specification is under the jurisdiction of ASTM Committee C13 on
C822Terminology Relating to Concrete Pipe and Related
ConcretePipeandisthedirectresponsibilityofSubcommitteeC13.04onLowHead
Pressure Pipe.
Products
Current edition approved Sept. 1, 2022. Published September 2022. Originally
C1602/C1602MSpecification for Mixing Water Used in the
approved in 1978. Last previous edition approved in 2019 as C361M–19. DOI:
Production of Hydraulic Cement Concrete
10.1520/C0361M-22.
C1619Specification for Elastomeric Seals for Joining Con-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
crete Structures
Standards volume information, refer to the standard’s Document Summary page on
D698Test Methods for Laboratory Compaction Character-
the ASTM website.
istics of Soil Using Standard Effort (12,400 ft-lbf/ft (600
The last approved version of this historical standard is referenced on
www.astm.org. kN-m/m ))
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C361M − 22
D4253Test Methods for Maximum Index Density and Unit pozzolan cement, except that the pozzolan constituent in the
Weight of Soils Using a Vibratory Table Type IP portland pozzolan cement shall not exceed 20% by
D4254Test Methods for Minimum Index Density and Unit weight.
Weight of Soils and Calculation of Relative Density 6.2.2 Fly Ash or Pozzolan—Fly ash or pozzolan shall
conform to the requirements of Specification C618.
2.2 Other Standard:
ACI Code 318Standard Building Code Requirements for 6.2.3 Allowable Cementitious Materials—The combination
of cementitious materials used in the concrete shall be one of
Reinforced Concrete
AISI-C1012 the following:
6.2.3.1 Portland cement only,
3. Terminology
6.2.3.2 Portland blast furnace slag cement only,
6.2.3.3 Portland pozzolan cement only, or
3.1 Definitions—Fordefinitionsoftermsrelatingtoconcrete
6.2.3.4 A combination of portland cement and fly ash or
pipe, see Terminology C822.
pozzolan, wherein the proportion of fly ash or pozzolan is
4. Classification
between 5 and 20% by weight of total cementitious material
(portland cement plus fly ash or pozzolan).
4.1 Pipe manufactured according to this specification shall
be for hydrostatic heads of 75, 150, 225, 300, and 375 kPa
6.3 Aggregates—Aggregates shall conform to Specification
measuredtothecenterlineofthepipe.Designsareprovidedin
C33/C33M, except that the requirements for grading are
Table 1 and Table 2 for the above hydrostatic heads combined
waived.
withexternalloadingsof1.5,3.0,4.5,and6.0m(designatedA,
6.4 Admixtures—Admixtures, except for air-entraining
B, C, and D in Table 1 and Table 2) of earth cover over the top
agents, shall not be added to the concrete unless permitted by
of the pipe under specific installation conditions. The specific
the owner.At the option of the manufacturer, or if specified by
installation conditions are covered in Appendix X1.Where the
the owner, the concrete in precast concrete pipe placed by the
hydrostatic head, external loadings, and installation conditions
cast-and-vibrated method shall contain an air-entraining agent
varyfromthosegiveninTable1andTable2andAppendixX1,
conforming to Specification C260/C260M. The amount of
detailed design calculations shall be made. The design criteria
air-entraining agent used shall be such as will affect the
for Table 1 and Table 2 are presented in Appendix X2.
entrainmentofnotmorethan3%airbyvolumeofconcreteas
discharged from the mixer.
5. Basis of Acceptance
6.5 Steel Reinforcement—Reinforcement shall consist of
5.1 Acceptability of the pipe in all diameters and classes
wire conforming to Specification A82/A82M, Specification
shall be determined by the results of such material tests as are
A496/A496M, or of wire reinforcement conforming to Speci-
required in 6.2 through 6.9 by crushing tests on cured concrete
fication A185/A185M or Specification A497/A497M,orof
cylinders, by hydrostatic pressure tests on units of the pipe, by
bars of Grade 300 steel conforming to Specification A615/
joint leakage tests, and by inspection during or after manufac-
A615M.
ture to determine whether the pipe conforms to this specifica-
tion as to design and freedom from defects.
6.6 Steel for Joint Rings:
6.6.1 Steel strips for bell rings less than 6 mm thick shall
5.2 Age for Acceptance—Pipe shall be considered ready for
conform to Grade SS30 of Specification A1011/A1011M or
acceptance when they conform to the requirements, as indi-
Grade Designation 1012 of Specification A575. Steel that
cated by the specified tests.
meets the requirements of AISI-C1012 for chemical compo-
6. Materials nentswillbeacceptableprovideditconformstoGradeSS30of
Specification A1011/A1011M in other respects.
6.1 Reinforced Concrete—The reinforced concrete shall
6.6.2 Steel plate for bell rings 6 mm or more in thickness
consist of portland cement, mineral aggregates, and water, in
and special shapes for spigot joint rings shall conform to
which steel has been embedded in such a manner that the steel
Specification A36/A36M, or to Grade A of Specification
andconcreteacttogether.Flyashorpozzolanisnotprohibited
A283/A283M, or to Grade Designation 1012 of Specification
when used as a partial cement replacement; see 9.1.
A576,ortoGrade50ofSpecificationA675/A675M.Steelthat
6.2 Cementitious Materials:
meets the requirements of AISI-C1012 for chemical compo-
6.2.1 Cement:
nents will be acceptable provided it conforms to Specification
6.2.1.1 Portland Cement—Portlandcementshallconformto
A36/A36M or to Specification A283/A283M in other respects.
the requirements of Specification C150/C150M.
6.7 Steel Castings for Fittings—Steel castings for fittings
6.2.1.2 Blended Hydraulic Cement—Blended cement shall
shall conform to Grade 70-36, Normalized, of Specification
conform to the requirements of Specification C595/C595M for
A27/A27M.
TypeISportlandblastfurnaceslagcementorTypeIPportland
6.8 Steel Plates and Sheets for Specials and Fittings—Steel
plates for specials and fittings shall conform to Specification
AvailablefromAmericanConcreteInstitute(ACI),P.O.Box9094,Farmington
A36/A36M or to Grade B or C of Specification A283/A283M
Hills, MI 48333-9094, http://www.concrete.org.
or Grade SS30 or SS33 of Specification A1011/A1011M or
Available from theAmerican Iron and Steel Institute (AISI), 1140 Connecticut
Ave. NW, Suite 705, Washington D.C. 20036, http://www.steel.org. Grade SS30 of Specification A1008/A1008M.
C361M − 22
TABLE 1 Design Requirements for Reinforced Concrete Low-Head Pressure Pipe [300 to 3650 mm Diameter], Concrete Design Strength 34.5 MPa (except as noted)
Steel Reinforced Yield Strength 276 MPa
NOTE 1—See Appendix for specific installation conditions and design criteria conditions required in conjunction with the use of Table 1.
NOTE2—DesignationsA,B,C,andD,forclassofpipe,denote1.5,3.0,4.5,and6.0mofearthcoverovertopofpipe.Figures75,Figures150,Figures225,etc.forclassofpipe,denotehydrostatic
pressure heads in kilopascals measured to centerline of pipe.
NOTE 3—An “s” in place of a steel area indicates the pipe class is a special design requiring stirrup reinforcement. Stirrups may be eliminated by changing wall thickness, main reinforcement,
concrete strength, or a combination thereof.
NOTE 4—The boldfaced value denotes 41.4 MPa concrete strength required.
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
Designated 300 375 450 525 600 675
Dia, mm
Type of
Reinforce- Circular Circular Circular Elliptical Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 50 75 50 75 57 75 57 75 60 75 60 75 63 75 63 75 66 79 82 107 66 82
mm
Layers of
Reinforce- Single Single Single Single Single Single Single Single Single Single Single Single Single Single Single Single Single Single Inner Outer Inner Outer Single Single
ment
Class
A-75 140 120 200 170 250 220 250 250 320 280 320 290 390 350 390 350 460 410 290 200 230 160 460 370
B-75 210 170 310 240 390 320 390 320 500 420 500 420 610 540 610 540 740 650 440 280 340 210 740 440
C-75 280 220 420 310 540 430 540 430 690 570 690 570 870 730 870 730 1060 890 590 350 450 250 1060 590
D-75 360 270 540 390 700 540 700 540 910 730 910 730 1150 950 1150 950 1430 1170 750 440 560 300 1430 750
A-150 220 220 280 270 350 320 520 520 430 390 610 610 510 480 690 690 600 550 390 300 330 250 780 780
B-150 270 230 380 320 480 420 520 520 600 530 610 610 740 660 740 690 880 780 540 370 430 300 880 780
C-150 340 280 500 390 630 520 630 520 800 680 800 680 990 860 990 860 1190 1030 690 450 540 340 1190 780
D-150 420 330 620 470 790 640 790 640 1020 840 1020 840 1280 1070 1280 1070 1570 1310 850 530 650 390 1570 850
A-225 340 340 430 430 520 520 . . 600 600 . . 690 690 . . 770 770 490 400 430 350 . .
B-225 340 340 460 430 580 520 . . 710 640 . . 860 780 . . 1020 920 640 470 520 390 . .
C-225 400 340 570 470 720 620 . . 910 790 . . 1110 980 . . 1330 1170 790 550 630 440 . .
D-225 480 390 700 550 880 730 . . 1130 950 . . 1400 1200 . . 1710 1440 940 630 730 480 . .
A-300 490 490 610 610 730 730 . . 860 860 . . 980 980 . . 1100 1100 590 500 590 510 . .
B-300 490 490 610 610 730 730 . . 860 860 . . 980 980 . . 1160 1100 740 570 620 480 . .
C-300 490 490 650 610 820 730 . . 1020 900 . . 1240 1110 . . 1470 1310 880 650 720 530 . .
D-300 540 490 770 620 980 820 . . 1240 1050 . . 1530 1320 . . 1850 1580 1040 730 820 570 . .
A-375 650 650 820 820 980 980 . . 1140 1140 . . 1310 1310 . . 1470 1470 790 680 780 690 . .
B-375 650 650 820 820 980 980 . . 1140 1140 . . 1310 1310 . . 1470 1470 830 670 810 660 . .
C-375 650 650 820 820 980 980 . . 1140 1140 . . 1360 1310 . . 1610 1470 980 750 830 640 . .
D-375 650 650 850 820 1070 980 . . 1350 1160 . . 1650 1450 . . 1990 1720 1140 830 910 670 . .

C361M − 22
TABLE 1 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
Designated 750 825
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 69 79 82 88 119 69 88 72 79 82 94 119 72 94
mm
Layers of
Reinforce- Single Single Inner Outer Inner Outer Inner Outer Single Single Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 530 490 340 230 320 220 250 170 530 410 610 570 400 270 350 240 290 200 610 450
B-75 880 790 530 340 490 310 370 220 880 490 1020 950 630 400 540 340 440 270 1020 540
C-75 1260 1110 720 440 660 400 490 280 1260 660 1490 1360 870 530 730 440 580 330 1490 730
D-75 1750 1470 920 550 840 490 600 330 1750 840 1940 1850 1120 670 930 540 720 400 1940 930
A-150 680 640 450 350 430 330 350 270 870 870 780 740 520 400 470 360 400 310 950 950
B-150 1030 940 640 450 600 420 470 320 1030 870 1190 1120 750 520 660 460 550 380 1190 950
C-150 1420 1260 830 550 770 500 580 370 1420 870 1660 1530 980 650 840 550 680 440 1660 950
D-150 1900 1630 1030 650 940 600 700 430 1900 940 2110 2020 1230 780 1040 660 820 510 2110 1040
A-225 860 860 560 460 530 440 470 390 . . 950 950 640 520 580 470 520 430 . .
B-225 1180 1100 750 560 700 520 570 420 . . 1360 1290 870 640 770 570 650 480 . .
C-225 1570 1410 940 660 870 610 680 470 . . 1830 1700 1100 770 950 670 790 550 . .
D-225 2060 1780 1130 760 1040 700 800 520 . . 2280 2190 1340 900 1150 770 930 610 . .
A-300 1220 1220 670 570 660 560 660 560 . . 1340 1340 760 640 730 620 730 620 . .
B-300 1340 1250 860 670 810 630 690 540 . . 1530 1460 990 760 890 690 760 590 . .
C-300 1730 1570 1040 760 980 720 780 570 . . 2000 1870 1220 890 1070 780 900 660 . .
D-300 2210 1930 1240 870 1150 810 890 620 . . 2450 2360 1460 1020 1260 880 1030 720 . .
A-375 1630 1630 870 760 870 760 870 760 . . 1800 1800 960 830 960 840 960 840 . .
B-375 1630 1630 970 780 920 740 900 730 . . 1800 1800 1110 890 1000 800 990 800 . .
C-375 1880 1720 1150 870 1080 820 930 710 . . 2170 2040 1330 1010 1180 900 1020 780 . .
D-375 2360 2090 1340 980 1250 910 990 720 . . 2620 2530 1570 1140 1370 990 1140 830 . .

C361M − 22
TABLE 1 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
C
Designated 900 975 1050
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 79 82 100 125 79 100 88 107 132 88 107 94 113 138 94 113
mm
Layers of
Reinforce- Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 670 460 320 380 260 330 220 670 490 490 340 420 290 360 240 530 530 520 360 450 310 390 270 570 570
B-75 1130 740 480 600 380 490 300 1130 600 790 510 650 410 540 330 790 650 850 540 710 450 590 370 850 710
C-75 1650 1030 640 800 480 640 370 1650 800 1090 680 870 530 710 420 1090 870 1160 720 940 570 780 460 1160 940
D-75 2150 1330 800 1010 600 800 450 2150 1010 1410 860 1100 650 880 500 1410 1100 1500 910 1190 710 970 550 1500 1190
A-150 850 590 450 510 390 440 340 1040 1040 630 480 550 420 480 370 1130 1130 670 510 590 450 530 400 1210 1210
B-150 1320 870 610 720 500 610 420 1320 1040 930 650 780 540 660 460 1130 1130 990 690 840 580 730 500 1210 1210
C-150 1840 1150 760 920 610 760 490 1840 1040 1220 810 1000 660 830 540 1220 1130 1300 860 1080 710 910 590 1300 1210
D-150 2330 1450 930 1130 720 910 570 2330 1130 1540 990 1230 780 1000 620 1540 1230 1630 1050 1330 840 1100 680 1630 1330
A-225 1040 720 580 630 510 570 460 . . 770 620 680 550 620 500 . . 810 650 730 590 670 540 . .
B-225 1500 1000 740 840 620 720 530 . . 1070 780 910 670 790 580 . . 1130 830 980 720 860 630 . .
C-225 2030 1280 890 1040 730 870 610 . . 1360 950 1130 790 950 660 . . 1440 1000 1210 850 1040 720 . .
D-225 2520 1580 1060 1250 840 1030 680 . . 1670 1120 1350 910 1130 750 . . 1760 1180 1460 980 1230 820 . .
A-300 1470 860 720 800 670 790 670 . . 910 760 860 730 860 730 . . 960 800 930 780 930 780 . .
B-300 1690 1130 870 960 740 840 650 . . 1200 920 1040 800 910 710 . . 1270 980 1120 860 990 770 . .
C-300 2210 1400 1020 1160 850 990 720 . . 1490 1080 1250 920 1080 790 . . 1580 1150 1350 980 1170 850 . .
D-300 2700 1700 1180 1370 960 1140 800 . . 1800 1250 1480 1040 1250 870 . . 1900 1320 1590 1110 1360 950 . .
A-375 1960 1050 910 1050 910 1050 910 . . 1140 980 1140 980 1140 990 . . 1230 1060 1230 1060 1230 1060 . .
B-375 1960 1260 1000 1090 870 1090 870 . . 1340 1060 1180 940 1180 950 . . 1420 1120 1270 1010 1270 1020 . .
C-375 2400 1530 1150 1280 970 1110 850 . . 1620 1220 1380 1050 1210 920 . . 1720 1290 1480 1120 1300 990 . .
D-375 2890 1820 1310 1480 1080 1250 910 . . 1920 1390 1600 1160 1370 990 . . 2030 1460 1720 1250 1490 1080 . .

C361M − 22
TABLE 1 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
C C
Designated 1125 1200 1275
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 97 119 144 97 119 104 125 144 104 125 107 132 150 107 132
mm
Layers of
Reinforce- Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 570 390 480 330 430 290 610 610 620 420 530 360 480 330 650 650 670 460 570 390 520 350 700 700
B-75 930 600 760 480 650 400 930 760 1010 650 830 530 740 460 1010 830 1100 710 890 560 790 490 1100 890
C-75 1280 790 1020 620 850 500 1280 1020 1380 860 1110 680 970 580 1380 1110 1510 940 1190 720 1040 630 1510 1190
D-75 1650 1000 1290 770 1060 610 1650 1290 1790 1080 1410 840 1210 710 1790 1410 1950 1190 1500 890 1300 760 1950 1500
A-150 720 550 630 480 570 430 1300 1300 780 590 690 520 640 480 1380 1380 840 640 730 550 680 510 1470 1470
B-150 1080 750 910 630 790 540 1300 1300 1170 810 990 680 890 610 1380 1380 1270 880 1050 720 950 650 1470 1470
C-150 1420 940 1160 760 990 640 1420 1300 1540 1020 1260 830 1120 730 1540 1380 1670 1100 1350 890 1200 780 1670 1470
D-150 1790 1150 1420 910 1190 750 1790 1420 1930 1240 1550 990 1360 850 1930 1550 2100 1350 1650 1050 1460 920 2100 1650
A-225 880 710 780 630 710 580 . . 950 760 850 680 790 640 . . 1020 810 900 720 840 680 . .
B-225 1230 900 1050 770 930 680 . . 1330 970 1140 840 1040 760 . . 1430 1050 1210 890 1110 810 . .
C-225 1570 1090 1300 910 1130 780 . . 1690 1180 1410 990 1270 880 . . 1830 1270 1510 1050 1360 940 . .
D-225 1930 1300 1560 1050 1330 880 . . 2080 1390 1700 1140 1500 1000 . . 2260 1510 1810 1210 1610 1070 . .
A-300 1040 860 1000 840 1000 840 . . 1110 930 1070 890 1060 890 . . 1190 990 1130 940 1130 950 . .
B-300 1380 1060 1200 920 1070 830 . . 1490 1140 1300 1000 1190 920 . . 1600 1220 1380 1050 1270 970 . .
C-300 1720 1240 1440 1050 1270 920 . . 1850 1340 1570 1140 1420 1030 . . 1990 1440 1670 1210 1520 1100 . .
D-300 2070 1440 1700 1190 1470 1020 . . 2230 1550 1850 1290 1650 1150 . . 2410 1670 1960 1370 1760 1230 . .
A-375 1320 1130 1320 1130 1310 1140 . . 1410 1200 1410 1210 1400 1210 . . 1500 1280 1500 1280 1490 1280 . .
B-375 1540 1210 1360 1090 1360 1090 . . 1650 1300 1460 1160 1450 1160 . . 1780 1400 1550 1230 1550 1230 . .
C-375 1860 1400 1590 1200 1410 1060 . . 2010 1500 1720 1300 1570 1180 . . 2160 1610 1830 1370 1670 1260 . .
D-375 2220 1590 1840 1330 1600 1160 . . 2380 1710 2000 1450 1800 1300 . . 2570 1840 2120 1530 1920 1390 . .

C361M − 22
TABLE 1 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
C
Designated 1350 1425 1500
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 113 138 157 113 138 119 144 163 119 144 125 150 169 125 150
mm
Layers of
Reinforce- Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 710 480 610 410 560 380 740 740 740 510 640 440 600 400 780 780 780 530 690 460 640 430 820 820
B-75 1140 730 940 590 840 520 1140 940 1190 760 990 630 890 560 1190 990 1240 790 1040 660 940 590 1240 1040
C-75 1580 980 1270 770 1120 670 1580 1270 1650 1030 1340 820 1200 720 1650 1340 1730 1070 1420 870 1270 770 1730 1420
D-75 2030 1240 1590 950 1400 820 2030 1590 2120 1290 1690 1010 1490 880 2120 1690 2210 1350 1790 1070 1590 930 2210 1790
A-150 890 670 780 590 730 550 1560 1560 930 700 830 620 770 580 1640 1640 980 730 870 660 820 620 1730 1730
B-150 1320 910 1110 760 1010 690 1560 1560 1370 950 1170 810 1070 730 1640 1640 1430 990 1230 850 1130 770 1730 1730
C-150 1740 1150 1430 940 1280 840 1740 1560 1820 1210 1520 1000 1370 890 1820 1640 1910 1260 1600 1050 1450 950 1910 1730
D-150 2190 1410 1760 1120 1560 980 2190 1760 2290 1470 1860 1180 1660 1050 2290 1860 2380 1530 1960 1250 1760 1110 2380 1960
A-225 1070 850 950 760 900 720 . . 1120 890 1010 800 950 760 . . 1170 930 1060 850 1010 800 . .
B-225 1490 1090 1280 940 1170 860 . . 1550 1140 1340 990 1240 910 . . 1620 1180 1410 1030 1310 960 . .
C-225 1910 1330 1600 1110 1450 1000 . . 2000 1390 1690 1170 1540 1070 . . 2090 1450 1780 1240 1630 1130 . .
D-225 2350 1580 1920 1280 1720 1150 . . 2460 1640 2030 1360 1830 1220 . . 2560 1710 2140 1430 1940 1290 . .
A-300 1250 1030 1200 1000 1200 1000 . . 1310 1080 1270 1050 1270 1050 . . 1370 1130 1340 1110 1340 1110 . .
B-300 1670 1270 1450 1110 1340 1030 . . 1740 1320 1520 1170 1420 1090 . . 1810 1380 1600 1220 1490 1150 . .
C-300 2080 1500 1760 1280 1610 1170 . . 2180 1570 1860 1350 1710 1240 . . 2270 1640 1970 1420 1810 1310 . .
D-300 2520 1750 2080 1450 1880 1310 . . 2620 1820 2200 1530 2000 1390 . . 2740 1900 2320 1610 2110 1470 . .
A-375 1590 1350 1580 1360 1580 1360 . . 1680 1420 1670 1430 1670 1430 . . 1770 1500 1760 1500 1760 1500 . .
B-375 1850 1450 1640 1300 1640 1300 . . 1920 1510 1730 1370 1730 1370 . . 2000 1570 1820 1440 1820 1450 . .
C-375 2260 1680 1930 1450 1780 1340 . . 2360 1760 2040 1530 1890 1420 . . 2460 1830 2150 1610 2000 1500 . .
D-375 2680 1920 2250 1620 2040 1480 . . 2800 2000 2370 1710 2170 1560 . . 2910 2080 2500 1800 2290 1650 . .

C361M − 22
TABLE 1 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
C C
Designated 1575 1650 1725
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 132 157 175 132 157 138 163 182 138 163 144 169 188 144 169
mm
Layers of
Reinforce- Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 840 570 740 500 690 460 860 860 880 600 780 530 730 490 900 900 920 620 820 550 770 520 940 940
B-75 1310 840 1110 700 1010 630 1310 1110 1360 870 1160 740 1060 670 1360 1160 1410 910 1220 770 1120 700 1410 1220
C-75 1840 1140 1520 930 1370 820 1840 1520 1910 1190 1610 980 1450 870 1910 1610 1990 1240 1690 1030 1530 920 1990 1690
D-75 2350 1430 1920 1150 1700 1000 2350 1920 2450 1490 2020 1210 1800 1060 2450 2020 2540 1550 2120 1270 1900 1120 2540 2120
A-150 1040 780 940 700 880 660 1820 1820 1090 810 990 730 930 690 1900 1900 1140 850 1040 770 980 730 1990 1990
B-150 1510 1040 1300 900 1200 830 1820 1820 1560 1080 1370 940 1260 870 1900 1900 1620 1120 1430 990 1330 910 1990 1990
C-150 2030 1340 1710 1120 1560 1020 2030 1820 2110 1390 1800 1180 1650 1070 2110 1900 2200 1450 1890 1240 1730 1130 2200 1990
D-150 2530 1620 2100 1340 1890 1190 2530 2100 2630 1690 2210 1400 1990 1260 2630 2210 2740 1750 2310 1470 2100 1330 2740 2310
A-225 1250 990 1140 900 1080 860 . . 1300 1030 1190 940 1140 900 . . 1360 1070 1250 990 1200 940 . .
B-225 1710 1250 1500 1100 1390 1020 . . 1770 1290 1570 1150 1460 1070 . . 1840 1340 1640 1200 1540 1120 . .
C-225 2220 1540 1900 1320 1750 1210 . . 2310 1600 2000 1380 1840 1270 . . 2400 1660 2100 1450 1940 1340 . .
D-225 2720 1820 2280 1530 2070 1380 . . 2820 1890 2400 1600 2190 1460 . . 2930 1960 2510 1680 2300 1530 . .
A-300 1460 1200 1410 1160 1400 1160 . . 1520 1250 1470 1210 1470 1210 . . 1580 1300 1540 1270 1540 1270 . .
B-300 1910 1450 1700 1300 1590 1220 . . 1980 1510 1770 1360 1670 1280 . . 2050 1560 1850 1420 1750 1340 . .
C-300 2410 1740 2100 1520 1940 1400 . . 2510 1810 2200 1590 2040 1470 . . 2610 1880 2300 1660 2140 1550 . .
D-300 2900 2010 2470 1720 2260 1570 . . 3010 2090 2590 1800 2380 1650 . . 3130 2170 2710 1890 2500 1740 . .
A-375 1860 1570 1860 1580 1850 1580 . . 1950 1640 1950 1650 1940 1650 . . 2040 1720 2040 1720 2030 1720 . .
B-375 2110 1660 1920 1510 1910 1520 . . 2190 1720 2010 1590 2000 1590 . . 2270 1780 2100 1660 2100 1660 . .
C-375 2610 1940 2290 1710 2130 1600 . . 2710 2010 2400 1790 2240 1680 . . 2820 2090 2510 1870 2350 1760 . .
D-375 3090 2210 2660 1910 2450 1760 . . 3210 2290 2790 2000 2570 1850 . . 3330 2380 2920 2090 2700 1940 . .

C361M − 22
TABLE 1 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal Des-
ignated 1800 1950 2100
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Circular
ment
Wall
Thickness, 150 175 194 150 175 163 188 207 175 200 219
mm
Layers of
Reinforce- Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer
ment
Class
A-75 1020 690 910 610 850 570 1020 980 1110 750 1000 670 940 630 1210 810 1100 730 1040 690
B-75 1550 1000 1340 850 1230 770 1550 1340 1660 1060 1460 920 1340 840 1780 1140 1580 1000 1460 920
C-75 2210 1370 1860 1140 1690 1020 2210 1860 2370 1470 2020 1240 1840 1110 2500 1550 2170 1330 1990 1200
D-75 2830 1720 2340 1400 2100 1240 2830 2340 3020 1840 2550 1530 2300 1360 3150 1920 2760 1660 2520 1490
A-150 1260 930 1140 850 1080 800 2080 2080 1370 1010 1250 920 1190 870 1480 1080 1360 1000 1300 950
B-150 1790 1230 1570 1080 1450 1000 2080 2080 1910 1320 1700 1170 1580 1090 2040 1400 1830 1260 1720 1180
C-150 2430 1600 2080 1360 1900 1240 2430 2080 2600 1710 2260 1480 2070 1350 2750 1810 2420 1580 2230 1460
D-150 3040 1940 2550 1620 2310 1460 3040 2550 3250 2070 2770 1760 2530 1600 3400 2180 3000 1910 2760 1740
A-225 1500 1180 1370 1080 1310 1030 . . 1620 1270 1500 1170 1430 1120 1750 1360 1630 1270 1560 1210
B-225 2020 1470 1790 1310 1680 1220 . . 2160 1570 1940 1410 1820 1330 2300 1670 2090 1520 1980 1440
C-225 2660 1830 2310 1590 2120 1460 . . 2840 1960 2490 1720 2310 1590 3000 2070 2670 1840 2480 1710
D-225 3250 2160 2770 1840 2520 1680 . . 3470 2310 3000 2000 2760 1830 3650 2440 3240 2160 3000 1990
A-300 1740 1420 1610 1320 1610 1320 . . 1880 1530 1750 1430 1750 1430 2020 1630 1890 1530 1890 1530
B-300 2260 1710 2020 1540 1900 1450 . . 2410 1820 2190 1660 2070 1570 2560 1940 2350 1790 2230 1700
C-300 2880 2070 2530 1820 2350 1690 . . 3080 2200 2730 1960 2540 1830 3250 2330 2920 2100 2740 1970
D-300 3470 2390 2980 2070 2740 1900 . . 3700 2550 3230 2240 2990 2070 3890 2690 3490 2410 3240 2240
A-375 2130 1790 2130 1790 2130 1790 . . 2310 1930 2310 1940 2310 1940 2500 2080 2490 2080 2490 2080
B-375 2490 1950 2260 1780 2190 1730 . . 2660 2080 2430 1910 2370 1870 2830 2210 2610 2050 2560 2010
C-375 3110 2300 2750 2050 2570 1910 . . 3320 2450 2970 2210 2780 2070 3510 2590 3170 2360 2990 2230
D-375 3690 2620 3200 2290 2960 2120 . . 3930 2790 3470 2480 3220 2310 4150 2960 3730 2660 3490 2490

C361M − 22
TABLE 1 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
Designated 2250 2400 2550 2700 3050 3350 3650
Dia, mm
Type of
Reinforce- Circular Circular Circular Circular Circular Circular Circular
ment
Wall
Thickness, 188 200 200 213 213 225 225 238 254 279 305
mm
Layers of
Reinforce- Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer Inner Outer
ment
Class
A-75 1310 880 1250 830 1410 940 1360 900 1520 1010 1470 970 1640 1080 1580 1040 1880 1240 2140 1400 2420 1570
B-75 1900 1210 1790 1140 2020 1290 1920 1220 2160 1370 2050 1300 2290 1460 2190 1390 2580 1640 2890 1830 3210 2030
C-75 2640 1630 2460 1520 2780 1720 2610 1610 2930 1820 2770 1710 3090 1910 2930 1810 3420 2120 3770 2330 4140 2560
D-75 3360 2050 3190 1930 3580 2180 3410 2060 3790 2310 3570 2160 3980 2420 3750 2280 SSSSSS
A-150 1590 1160 1530 1120 1710 1240 1650 1200 1830 1330 1780 1290 1960 1420 1910 1370 2240 1600 2520 1790 2830 1990
B-150 2170 1490 2060 1420 2310 1590 2210 1510 2460 1680 2360 1610 2610 1780 2510 1710 2920 1990 3260 2210 3610 2440
C-150 2900 1910 2720 1790 3060 2010 2890 1900 3220 2120 3060 2010 3390 2230 3230 2120 3750 2460 4130 2710 4530 2960
D-150 3620 2320 3440 2190 3850 2460 3670 2340 4080 2610 3860 2460 4270 2740 4050 2590 SSSSSS
A-225 1880 1450 1810 1400 2010 1550 1950 1500 2150 1650 2090 1600 2290 1750 2230 1710 2600 1960 2910 2190 3250 2420
B-225 2450 1780 2340 1700 2600 1880 2500 1810 2760 2000 2660 1920 2930 2110 2830 2040 3270 2350 3640 2600 4020 2860
C-225 3160 2180 2990 2060 3340 2300 3170 2190 3520 2420 3350 2310 3700 2550 3540 2440 4090 2810 4500 3080 4920 3370
D-225 3880 2590 3690 2450 4120 2750 3940 2620 4370 2910 4140 2760 4570 3050 4350 2900 SSSSSS
A-300 2160 1740 2100 1690 2310 1850 2250 1800 2470 1970 2400 1920 2630 2090 2560 2040 2960 2330 3310 2590 3670 2850
B-300 2730 2060 2620 1980 2900 2180 2790 2110 3070 2310 2970 2230 3250 2440 3150 2370 3630 2710 4020 2990 4430 3280
C-300 3430 2460 3260 2340 3620 2590 3450 2480 3810 2730 3650 2620 4010 2870 3850 2760 4430 3160 4860 3470 5320 3780
D-300 4140 2860 3950 2720 4400 3030 4210 2900 4660 3210 4430 3060 4880 3360 4660 3210 SSSSSS
A-375 2680 2220 2680 2220 2860 2360 2860 2370 3050 2510 3050 2510 3230 2650 3230 2650 3600 2930 3980 3210 4350 3490
B-375 3010 2350 2900 2260 3190 2490 3080 2410 3380 2630 3280 2550 3580 2770 3470 2700 3980 3070 4410 3380 4850 3700
C-375 3700 2740 3530 2620 3900 2890 3740 2770 4110 3040 3950 2920 4330 3190 4170 3080 4770 3520 5240 3850 5720 4200
D-375 4410 3140 4210 2990 4670 3320 4810 3180 4950 3510 4730 3360 5190 3680 4970 3530 SSSSSS
A
Steel areas may be interpolated between those shown for variations in wall thickness. See 7.2 for provisions for special designs.
B
The prescribed amounts of reinforcement do not provide any allowance for pressure surges (water hammer) in pipelines.
C
Available in some areas.
C361M − 22
TABLE 2 Design Requirements for Reinforced Concrete Low-Head Pressure Pipe [300 to 3650 mm Diameter], Concrete Design Strength 34.5 MPa (except as noted)
Steel Reinforcement Yield Strength 414 Mpa
NOTE 1—See Appendix for specific installation conditions and design criteria conditions required in conjunction with the use of Table 2.
NOTE2—DesignationsA,B,C,andD,forclassofpipe,denote1.5,3.0,4.5,and6.0mofearthcoverovertopofpipe.Figures75,Figures150,Figures225,etc.forclassofpipe,denotehydrostatic
pressure heads in kilopascals measured to centerline of pipe.
NOTE 3—An “s” in place of a steel area indicates the pipe class is a special design requiring stirrup reinforcement. Stirrups may be eliminated by changing wall thickness, main reinforcement,
concrete strength, or a combination thereof.
NOTE 4—The boldfaced value denotes 41.4 MPa concrete strength required.
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
Designated 300 375 450 525 600 675
Dia, mm
Type of
Reinforce- Circular Circular Circular Elliptical Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 50 75 50 75 57 75 57 75 60 75 60 75 63 75 63 75 66 79 82 107 66 82
mm
Layers of
Reinforce- Single Single Single Single Single Single Single Single Single Single Single Single Single Single Single Single Single Single Inner Outer Inner Outer Single Single
ment
Class
A-75 100 100 130 130 170 150 250 250 210 190 290 290 260 230 330 330 300 280 190 130 160 110 370 370
B-75 140 110 200 160 260 220 260 250 330 280 330 290 410 360 410 360 490 430 290 180 230 140 490 370
C-75 190 140 280 210 360 290 360 290 460 380 460 380 580 490 580 490 700 590 400 240 300 170 700 400
D-75 240 180 360 260 470 360 470 360 610 490 610 490 770 630 770 630 950 780 500 290 370 200 950 500
A-150 220 220 270 270 320 320 520 520 380 380 610 610 430 430 690 690 490 490 280 210 280 210 780 780
B-150 220 220 270 270 320 320 520 520 400 380 610 610 490 440 690 690 590 520 360 250 290 200 780 780
C-150 230 220 330 270 420 350 520 520 530 450 610 610 660 570 690 690 800 690 460 300 360 230 800 780
D-150 280 220 410 310 530 420 530 520 680 560 680 610 850 720 850 720 1050 870 570 360 430 260 1050 780
A-225 340 340 430 430 520 520 . . 600 600 . . 690 690 . . 770 770 430 350 430 350 . .
B-225 340 340 430 430 520 520 . . 600 600 . . 690 690 . . 770 770 440 330 440 330 . .
C-225 340 340 430 430 520 520 . . 610 600 . . 740 690 . . 890 780 520 370 460 320 . .
D-225 340 340 470 430 590 520 . . 750 630 . . 930 800 . . 1140 960 630 420 490 320 . .
A-300 490 490 610 610 730 730 . . 860 860 . . 980 980 . . 1100 1100 590 500 590 510 . .
B-300 490 490 610 610 730 730 . . 860 860 . . 980 980 . . 1100 1100 620 480 620 480 . .
C-300 490 490 610 610 730 730 . . 860 860 . . 980 980 . . 1100 1100 630 470 630 470 . .
D-300 490 490 610 610 730 730 . . 860 860 . . 1020 980 . . 1230 1100 690 490 650 450 . .
A-375 650 650 820 820 980 980 . . 1140 1140 . . 1310 1310 . . 1470 1470 790 680 780 690 . .
B-375 650 650 820 820 980 980 . . 1140 1140 . . 1310 1310 . . 1470 1470 810 660 810 660 . .
C-375 650 650 820 820 980 980 . . 1140 1140 . . 1310 1310 . . 1470 1470 830 640 830 640 . .
D-375 650 650 820 820 980 980 . . 1140 1140 . . 1310 1310 . . 1470 1470 850 620 850 620 . .

C361M − 22
TABLE 2 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
Designated 750 825
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 69 79 82 88 119 69 88 72 79 82 94 119 72 94
mm
Layers of
Reinforce- Single Single Inner Outer Inner Outer Inner Outer Single Single Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 350 330 230 160 210 150 170 110 410 410 400 380 260 180 230 160 200 130 450 450
B-75 580 520 350 220 330 210 250 150 580 410 680 630 420 270 360 230 290 180 680 450
C-75 840 740 480 290 440 270 320 180 840 440 1000 900 580 350 490 290 380 220 1000 490
D-75 1160 980 620 360 560 330 400 220 1160 560 1290 1230 740 450 620 360 480 270 1290 620
A-150 540 540 310 230 310 230 310 230 870 870 590 590 350 260 340 260 340 260 950 950
B-150 690 630 430 300 400 280 320 220 870 870 790 750 500 350 440 300 360 250 950 950
C-150 950 840 550 360 510 340 390 250 950 870 1110 1020 650 430 560 370 450 290 1110 950
D-150 1270 1080 680 440 630 400 470 280 1270 870 1410 1350 820 520 690 440 550 340 1410 950
A-225 860 860 470 390 470 390 470 390 . . 950 950 520 420 520 420 520 430 . .
B-225 860 860 500 370 490 370 490 370 . . 950 950 580 430 540 400 540 400 . .
C-225 1050 940 620 440 580 410 510 350 . . 1220 1130 730 510 640 450 560 390 . .
D-225 1370 1190 750 510 700 470 530 350 . . 1520 1460 890 600 760 510 620 410 . .
A-300 1220 1220 660 560 660 560 660 560 . . 1340 1340 730 610 730 620 730 620 . .
B-300 1220 1220 690 530 690 530 690 540 . . 1340 1340 760 590 760 590 760 590 . .
C-300 1220 1220 710 520 700 520 710 520 . . 1340 1340 810 590 780 570 780 570 . .
D-300 1470 1290 820 580 770 540 720 500 . . 1630 1570 970 680 840 590 790 550 . .
A-375 1630 1630 870 760 870 760 870 760 . . 1800 1800 960 830 960 840 960 840 . .
B-375 1630 1630 910 730 900 730 900 730 . . 1800 1800 1000 800 1000 800 990 800 . .
C-375 1630 1630 930 700 930 710 930 710 . . 1800 1800 1020 770 1020 780 1020 780 . .
D-375 1690 1630 950 690 950 690 950 690 . . 1800 1800 1050 760 1040 760 1040 760 . .

C361M − 22
TABLE 2 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
C
Designated 900 975 1050
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 79 82 100 125 79 100 88 107 132 88 107 94 113 138 94 113
mm
Layers of
Reinforce- Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 440 310 210 250 180 220 150 490 490 330 230 280 190 240 160 530 530 350 240 300 210 260 180 570 570
B-75 760 500 320 400 250 330 200 760 490 530 340 430 270 360 220 530 530 560 360 470 300 400 240 570 570
C-75 1100 680 420 530 320 430 250 1100 530 730 450 580 350 470 280 730 580 770 480 630 380 520 310 770 630
D-75 1430 890 540 680 400 530 300 1430 680 940 570 740 440 590 340 940 740 1000 600 800 470 650 370 1000 800
A-150 650 390 300 370 280 370 280 1040 1040 420 320 400 300 400 300 1130 1130 440 340 430 330 430 330 1210 1210
B-150 880 580 400 480 330 400 280 1040 1040 620 430 520 360 440 300 1130 1130 660 460 560 390 480 330 1210 1210
C-150 1230 770 510 610 400 500 330 1230 1040 820 540 670 440 550 360 1130 1130 870 570 720 470 610 390 1210 1210
D-150 1550 970 620 750 480 610 380 1550 1040 1030 660 820 520 670 420 1130 1130 1090 700 880 560 730 460 1210 1210
A-225 1030 570 460 570 460 570 460 . . 620 500 620 500 620 500 . . 670 540 670 540 670 540 . .
B-225 1030 670 490 590 440 590 440 . . 710 520 640 480 640 480 . . 750 550 690 510 690 510 . .
C-225 1350 850 590 690 480 610 420 . . 900 630 750 520 660 460 . . 960 670 810 560 710 490 . .
D-225 1680 1050 700 830 560 680 450 . . 1110 750 900 600 750 500 . . 1180 790 970 650 820 540 . .
A-300 1470 800 670 800 670 790 670 . . 860 720 860 730 860 730 . . 930 780 930 780 930 780 . .
B-300 1470 830 640 830 640 830 640 . . 900 690 900 690 900 690 . . 970 740 970 740 970 750 . .
C-300 1470 940 680 850 620 850 620 . . 990 720 920 670 920 670 . . 1050 760 990 720 990 720 . .
D-300 1800 1130 790 910 640 860 600 . . 1200 830 980 690 940 650 . . 1270 880 1060 740 1010 700 . .
A-375 1960 1050 910 1050 910 1050 910 . . 1140 980 1140 980 1140 990 . . 1230 1060 1230 1060 1230 1060 . .
B-375 1960 1090 870 1090 870 1090 870 . . 1180 940 1180 940 1180 950 . . 1280 1010 1270 1010 1270 1020 . .
C-375 1960 1120 840 1110 850 1110 850 . . 1210 910 1210 920 1210 920 . . 1310 980 1300 980 1300 990 . .
D-375 1960 1210 870 1140 820 1140 820 . . 1280 920 1230 890 1230 890 . . 1360 980 1330 960 1330 960 . .

C361M − 22
TABLE 2 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
C C
Designated 1125 1200 1275
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 97 119 144 97 119 104 125 144 104 125 107 132 150 107 132
mm
Layers of
Reinforce- Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 380 260 320 220 280 190 610 610 410 280 350 240 320 220 650 650 450 310 380 260 350 230 700 700
B-75 620 400 510 320 430 270 620 610 670 430 560 350 490 310 670 650 730 470 590 370 530 330 730 700
C-75 850 530 680 410 570 330 850 680 920 570 740 450 650 390 920 740 1000 620 790 480 700 420 1000 790
D-75 1100 670 860 510 700 410 1100 860 1190 720 940 560 810 470 1190 940 1300 790 1000 600 870 510 1300 1000
A-150 480 370 460 350 460 350 1300 1300 520 390 490 370 490 370 1380 1380 560 420 520 400 520 400 1470 1470
B-150 720 500 600 420 530 360 1300 1300 780 540 660 450 590 410 1380 1380 840 580 700 480 630 430 1470 1470
C-150 950 630 770 510 660 430 1300 1300 1020 680 840 550 750 490 1380 1380 1110 740 900 590 800 520 1470 1470
D-150 1190 770 950 600 790 500 1300 1300 1290 830 1030 660 900 570 1380 1380 1400 900 1100 700 970 610 1470 1470
A-225 720 570 710 580 710 580 . . 770 610 760 610 760 610 . . 810 650 810 650 810 650 . .
B-225 820 600 740 550 740 550 . . 890 650 790 580 790 580 . . 960 700 840 620 840 620 . .
C-225 1050 730 870 610 760 530 . . 1130 780 940 660 850 590 . . 1220 850 1000 700 900 630 . .
D-225 1290 860 1040 700 890 590 . . 1390 930 1130 760 1000 670 . . 1500 1010 1210 810 1070 720 . .
A-300 1000 830 1000 840 1000 840 . . 1070 890 1070 890 1060 890 . . 1140 940 1130 940 1130 950 . .
B-300 1040 790 1040 800 1040 800 . . 1110 850 1110 850 1110 850 . . 1180 900 1180 900 1170 900 . .
C-300 1140 830 1060 770 1060 770 . . 1230 890 1130 820 1130 820 . . 1330 960 1200 870 1200 870 . .
D-300 1380 960 1130 790 1080 750 . . 1490 1030 1230 860 1150 800 . . 1610 1120 1310 910 1220 850 . .
A-375 1320 1130 1320 1130 1310 1140 . . 1410 1200 1410 1210 1400 1210 . . 1500 1280 1500 1280 1490 1280 . .
B-375 1370 1080 1360 1090 1360 1090 . . 1460 1150 1460 1160 1450 1160 . . 1550 1220 1550 1230 1550 1230 . .
C-375 1400 1050 1400 1050 1390 1060 . . 1500 1120 1490 1120 1490 1120 . . 1590 1190 1580 1190 1580 1190 . .
D-375 1480 1060 1420 1030 1420 1030 . . 1590 1140 1520 1100 1520 1100 . . 1710 1230 1610 1160 1610 1170 . .

C361M − 22
TABLE 2 Continued
2 A, B
Circumferential reinforcement, mm /linear m of pipe
Internal
C
Designated 1350 1425 1500
Dia, mm
Type of
Reinforce- Circular Elliptical Circular Elliptical Circular Elliptical
ment
Wall
Thickness, 113 138 157 113 138 119 144 163 119 144 125 150 169 125 150
mm
Layers of
Reinforce- Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single Inner Outer Inner Outer Inner Outer Single Single
ment
Class
A-75 470 3
...