ASTM C76-22a

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C76 − 22 C76 − 22a
Standard Specification for
Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe
This standard is issued under the fixed designation C76; the number immediately following the designation indicates the year of 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 approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers reinforced concrete pipe intended to be used for the conveyance of sewage, industrial wastes, and
storm water, and for the construction of culverts.
1.2 This specification is the inch-pound companion to Specification C76M; therefore, no SI equivalents are presented in this
specification. Reinforced concrete pipe that conform to the requirements of C76M, are acceptable under this Specification C76
unless prohibited by the Owner.
NOTE 1—This specification is a manufacturing and purchase specification only, and does not include requirements for bedding, backfill, or the relationship
between field load condition and the strength classification of pipe. However, experience has shown that the successful performance of this product
depends upon the proper selection of the class of pipe, type of bedding and backfill, and care that installation conforms to the construction specifications.
The owner of the reinforced concrete pipe specified herein is cautioned that he must correlate the field requirements with the class of pipe specified and
provide inspection at the construction site.
NOTE 2—Attention is called to the specification for reinforced concrete D-load culvert, storm drain, and sewer pipe (Specification C655).
1.3 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.
2. Referenced Documents
2.1 ASTM Standards:
A36/A36M Specification for Carbon Structural Steel
A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
A706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
A1064/A1064M Specification for Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete
C33/C33M Specification for Concrete Aggregates
C76M Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe (Metric)
C150/C150M Specification for Portland Cement
C260/C260M Specification for Air-Entraining Admixtures for Concrete
C309 Specification for Liquid Membrane-Forming Compounds for Curing Concrete
This specification is under the jurisdiction of ASTM Committee C13 on Concrete Pipe and is the direct responsibility of Subcommittee C13.02 on Reinforced Sewer
and Culvert Pipe.
Current edition approved March 1, 2022Sept. 1, 2022. Published March 2022September 2022. Originally approved in 1930. Last previous edition approved in 20202022
as C76 - 20.C76 - 22. DOI: 10.1520/C0076-22.10.1520/C0076-22A.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
C76 − 22a
C443 Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets
C494/C494M Specification for Chemical Admixtures for Concrete
C497 Test Methods for Concrete Pipe, Concrete Box Sections, Manhole Sections, or Tile
C595/C595M Specification for Blended Hydraulic Cements
C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
C655 Specification for Reinforced Concrete D-Load Culvert, Storm Drain, and Sewer Pipe
C822 Terminology Relating to Concrete Pipe and Related Products
C989/C989M Specification for Slag Cement for Use in Concrete and Mortars
C990 Specification for Joints for Concrete Pipe, Manholes, and Precast Box Sections Using Preformed Flexible Joint Sealants
C1017/C1017M Specification for Chemical Admixtures for Use in Producing Flowing Concrete (Withdrawn 2022)
C1116/C1116M Specification for Fiber-Reinforced Concrete
C1602/C1602M Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete
C1628 Specification for Joints for Concrete Gravity Flow Sewer Pipe, Using Rubber Gaskets
3. Terminology
3.1 Definitions—For definitions of terms relating to concrete pipe, see Terminology C822.
4. Classification
4.1 Pipe manufactured in accordance with this specification shall be of five classes identified as Class I, Class II, Class III, Class
IV, and Class V. The corresponding strength requirements are prescribed in Tables 1-5.
A
TABLE 1 Requirements for Class I Reinforced Concrete Pipe
NOTE 1—See 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 load expressed 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 ultimate load as specified below, multiplied by the internal diameter of the pipe in feet.
D-load to produce a 0.01-in. crack 800
D-load to produce the ultimate load 1200
Reinforcement, in. /linear ft of pipe wall
Wall A Wall B
Internal
Concrete Strength, 4000 psi Concrete Strength, 4000 psi
Designated
Circular Circular
Diameter,
B B
Wall Wall
Reinforcement Reinforcement
in.
Elliptical Elliptical
Thickness, Thickness,
C C
Reinforcement Reinforcement
Inner Outer Inner Outer
in. in.
Cage Cage Cage Cage
60 5 0.24 0.15 0.27 6 0.21 0.12 0.23
1 1
66 5 ⁄2 0.30 0.18 0.33 6 ⁄2 0.24 0.15 0.27
72 6 0.35 0.21 0.39 7 0.29 0.17 0.32
1 1
78 6 ⁄2 0.40 0.24 0.44 7 ⁄2 0.32 0.19 0.36
84 7 0.45 0.27 0.50 8 0.36 0.21 0.41
1 1
90 7 ⁄2 0.49 0.29 0.54 8 ⁄2 0.41 0.24 0.45
96 8 0.54 0.32 0.60 9 0.45 0.27 0.51
Concrete Strength, 5000 psi
1 1
102 8 ⁄2 0.63 0.38 Inner Circular 0.24 9 ⁄2 0.54 0.32 Inner Circular 0.21
Plus Elliptical 0.38 Plus Elliptical 0.32
108 9 0.68 0.41 Inner Circular 0.27 10 0.60 0.36 Inner Circular 0.24
Plus Elliptical 0.41 Plus Elliptical 0.36
A A
114 . . . . . . . . . . . . . . . . . . . . . . . .
A A
120 . . . . . . . . . . . . . . . . . . . . . . . .
A A
126 . . . . . . . . . . . . . . . . . . . . . . . .
A A
132 . . . . . . . . . . . . . . . . . . . . . . . .
A A
138 . . . . . . . . . . . . . . . . . . . . . . . .
A A
144 . . . . . . . . . . . . . . . . . . . . . . . .
A
For 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 those
shown for variations in diameter, loading, or wall thickness. Pipe over 96 in. in diameter shall have two circular cages or an inner circular plus one elliptical cage.
B
As an alternative to configurations 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 than that specified for the outer cage in the table and the total area
of 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, or
An inner and outer cage plus an elliptical cage in accordance with Fig. 2.
C
Elliptical and quadrant steel must be held in place by means of holding rods, chairs, or other positive means throughout the entire casting operation.
The last approved version of this historical standard is referenced on www.astm.org.
C76 − 22a
A
TABLE 2 Requirements for Class II Reinforced Concrete Pipe
NOTE 1—See 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 load expressed 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 ultimate load as specified below, multiplied by the internal diameter of the pipe in feet.
D-load to produce a 0.01-in. crack 1000
D-load to produce the ultimate load 1500
Reinforcement, in. /linear ft of pipe wall
Wall A Wall B Wall C
Internal
Desig- Concrete Strength, 4000 psi Concrete Strength, 4000 psi Concrete Strength, 4000 psi
nated
Circular Circular Circular
Wall Wall Wall
Diameter,
B B B
Reinforcement Reinforcement Reinforcement
Thick- Elliptical Thick- Elliptical Thick- Elliptical
in.
C C C
ness, Reinforcement ness, Reinforcement ness, Reinforcement
Inner Outer Inner Outer Inner Outer
in. in. in.
Cage Cage Cage Cage Cage Cage
D D D
3 3
12 1 ⁄4 0.07 . . . . . . 2 0.07 . . . . . . 2 ⁄4 0.07 . . . . . .
D D D
7 1
15 1 ⁄8 0.07 . . . . . . 2 ⁄4 0.07 . . . . . . 3 0.07 . . . . . .
D D D D D D
1 1
18 2 0.07 . . . 0.07 2 ⁄2 0.07 . . . 0.07 3 ⁄4 0.07 . . . 0.07
D D D D
1 3 1
21 2 ⁄4 0.12 . . . 0.10 2 ⁄4 0.07 . . . 0.07 3 ⁄2 0.07 . . . 0.07
D D D D
1 3
24 2 ⁄2 0.12 . . . 0.11 3 0.07 . . . 0.07 3 ⁄4 0.07 . . . 0.07
D D
5 1
27 2 ⁄8 0.15 . . . 0.12 3 ⁄4 0.12 . . . 0.11 4 0.07 . . . 0.07
3 1 1 D D
30 2 ⁄4 0.15 . . . 0.14 3 ⁄2 0.14 . . . 0.12 4 ⁄4 0.07 . . . 0.07
D D
7 3 1
33 2 ⁄8 0.16 . . . 0.15 3 ⁄4 0.15 . . . 0.12 4 ⁄2 0.07 . . . 0.07
E E
36 3 0.14 0.08 0.15 4 0.12 0.07 0.12 4 ⁄4 0.07 0.07 0.08
1 1 1
42 3 ⁄2 0.16 0.10 0.18 4 ⁄2 0.15 0.09 0.17 5 ⁄4 0.10 0.07 0.11
48 4 0.21 0.12 0.23 5 0.18 0.11 0.20 5 ⁄4 0.14 0.08 0.15
1 1 1
54 4 ⁄2 0.24 0.15 0.27 5 ⁄2 0.21 0.12 0.24 6 ⁄4 0.17 0.10 0.19
60 5 0.30 0.18 0.33 6 0.24 0.15 0.27 6 ⁄4 0.21 0.12 0.24
1 1 1
66 5 ⁄2 0.35 0.21 0.39 6 ⁄2 0.31 0.19 0.34 7 ⁄4 0.24 0.15 0.27
72 6 0.41 0.24 0.45 7 0.35 0.21 0.39 7 ⁄4 0.30 0.18 0.33
1 1 1
78 6 ⁄2 0.45 0.27 0.51 7 ⁄2 0.40 0.24 0.44 8 ⁄4 0.35 0.21 0.39
84 7 0.51 0.31 0.57 8 0.45 0.27 0.51 8 ⁄4 0.41 0.24 0.45
1 1 1
90 7 ⁄2 0.57 0.34 0.63 8 ⁄2 0.51 0.31 0.57 9 ⁄4 0.48 0.29 0.53
96 8 0.62 0.36 0.69 9 0.57 0.34 0.63 9 ⁄4 0.55 0.33 0.60
Concrete Strength, 5000 psi
1 1 1
102 8 ⁄2 0.76 0.45 Inner 0.30 9 ⁄2 0.68 0.41 Inner 0.27 10 ⁄4 0.62 0.36 Inner 0.24
Circular Circular Circular
Plus El- 0.45 Plus El- 0.41 Plus El- 0.36
liptical liptical liptical
108 9 0.85 0.51 Inner 0.34 10 0.76 0.45 Inner 0.30 10 ⁄4 0.70 0.42 Inner 0.27
Circular Circular Circular
Plus El- 0.51 Plus El- 0.45 Plus El- 0.42
liptical liptical liptical
A A A
114 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
120 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
126 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
132 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
138 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
144 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
For 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 those
shown for variations in diameter, loading, or wall thickness. Pipe over 96 in. in diameter shall have two circular cages or an inner circular plus one elliptical cage.
B
As an alternative to configurations 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 than that specified for the outer cage in the table and the total area
of 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, or
An inner and outer cage plus an elliptical cage in accordance with Fig. 2.
C
Elliptical and quadrant steel must be held in place by means of holding rods, chairs, or other positive means throughout the entire casting operation.
D
For these classes and sizes, the minimum practical steel reinforcement is specified. The specified ultimate strength of non-reinforced pipe is greater than the minimum
specified strength for the equivalent diameters.
E
As an alternative, single cage reinforcement may be used. The reinforcement area in square in. per linear foot shall be 0.20 for wall B and 0.16 for wall C.
5. Basis of Acceptance
5.1 Unless otherwise designated by the owner at the time of, or before placing an order, there are two separate and alternative bases
of acceptance. Independent of the method of acceptance, the pipe shall be designed to meet both the 0.01-in. crack and ultimate
strength requirements specified in Tables 1-5.
5.1.1 Acceptance on the Basis of Plant Load-Bearing Tests, Material Tests, and Inspection of Manufactured Pipe for Visual
Defects and Imperfections—Acceptability of the pipe in all diameters and classes produced in accordance with 7.1 or 7.2 shall be
determined by the results of the three-edge bearing tests as defined in 11.3.1; by such material tests as are required in 6.2, 6.3, 6.5,
C76 − 22a
A
TABLE 3 Requirements for Class III Reinforced Concrete Pipe
NOTE 1—See 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 load expressed 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 ultimate load as specified below, multiplied by the internal diameter of the pipe in feet.
D-load to produce a 0.01-in. crack 1350
D-load to produce the ultimate load 2000
Reinforcement, in. /linear ft of pipe wall
Wall A Wall B Wall C
Internal Concrete Strength, 4000 psi Concrete Strength, 4000 psi Concrete Strength, 4000 psi
Designated
Circular Circular Circular
Wall Wall Wall
Diameter, in.
B B B
Reinforcement Reinforcement Reinforcement
Thick- Elliptical Thick- Elliptical Thick- Elliptical
C C C
nesses, Reinforcement nesses, Reinforcement nesses, Reinforcement
Inner Outer Inner Outer Inner Outer
in. in. in.
Cage Cage Cage Cage Cage Cage
D D D
3 3
12 1 ⁄4 0.07 . . . . . . 2 0.07 . . . . . . 2 ⁄4 0.07 . . . . . .
D D D
7 1
15 1 ⁄8 0.07 . . . . . . 2 ⁄4 0.07 . . . . . . 3 0.07 . . . . . .
D D D D D D
1 1
18 2 0.07 . . . 0.07 2 ⁄2 0.07 . . . 0.07 3 ⁄4 0.07 . . . 0.07
D D D D
1 3 1
21 2 ⁄4 0.14 . . . 0.11 2 ⁄4 0.07 . . . 0.07 3 ⁄2 0.07 . . . 0.07
D D D
1 3
24 2 ⁄2 0.17 . . . 0.14 3 0.07 . . . 0.07 3 ⁄4 0.07 . . . 0.07
D
5 1
27 2 ⁄8 0.18 . . . 0.16 3 ⁄4 0.16 . . . 0.14 4 0.08 . . . 0.07
3 1 1
30 2 ⁄4 0.19 . . . 0.18 3 ⁄2 0.18 . . . 0.15 4 ⁄4 0.10 . . . 0.08
7 3 1
33 2 ⁄8 0.21 . . . 0.20 3 ⁄4 0.20 . . . 0.17 4 ⁄2 0.12 . . . 0.10
E E
36 3 0.21 0.12 0.23 4 0.17 0.10 0.19 4 ⁄4 0.08 0.07 0.09
1 1 1
42 3 ⁄2 0.24 0.15 0.27 4 ⁄2 0.21 0.12 0.23 5 ⁄4 0.12 0.07 0.12
48 4 0.32 0.19 0.35 5 0.24 0.14 0.27 5 ⁄4 0.16 0.10 0.18
1 1 1
54 4 ⁄2 0.38 0.23 0.42 5 ⁄2 0.29 0.17 0.32 6 ⁄4 0.21 0.12 0.23
60 5 0.44 0.26 0.49 6 0.34 0.20 0.38 6 ⁄4 0.24 0.15 0.27
1 1 1
66 5 ⁄2 0.50 0.30 0.55 6 ⁄2 0.41 0.24 0.45 7 ⁄4 0.31 0.19 0.34
72 6 0.57 0.34 0.63 7 0.49 0.29 0.54 7 ⁄4 0.36 0.21 0.40
Concrete Strength, 5000 psi
1 1 1
78 6 ⁄2 0.64 0.38 0.71 7 ⁄2 0.57 0.34 0.63 8 ⁄4 0.42 0.24 0.47
84 7 0.72 0.43 0.80 8 0.64 0.38 0.71 8 ⁄4 0.50 0.30 0.56
Concrete Strength, 5000 psi Concrete Strength, 5000 psi
1 1 1
90 7 ⁄2 0.81 0.49 0.90 8 ⁄2 0.69 0.41 0.77 9 ⁄4 0.59 0.35 0.66
96 8 0.93 0.56 1.03 9 0.76 0.45 0.84 9 ⁄4 0.70 0.42 Inner 0.27
Circular
Plus El- 0.42
liptical
1 1 1
102 8 ⁄2 1.03 0.62 Inner 0.41 9 ⁄2 0.90 0.54 Inner 0.36 10 ⁄4 0.83 0.50 Inner 0.33
Circular Circular Circular
Plus El- 0.62 Plus El- 0.54 Plus El- 0.50
liptical liptical liptical
108 9 1.22 0.73 Inner 0.49 10 1.08 0.65 Inner 0.43 10 ⁄4 0.99 0.59 Inner 0.40
Circular Circular Circular
Plus El- 0.73 Plus El- 0.65 Plus El- 0.59
liptical liptical liptical
A A A
114 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
120 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
126 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
132 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
138 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
144 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
For 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 those
shown for variations in diameter, loading, or wall thickness. Pipe over 96 in. in diameter shall have two circular cages or an inner circular plus one elliptical cage.
B
As an alternative to configurations 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 than that specified for the outer cage in the table and the total area
of 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, or
An inner and outer cage plus an elliptical cage in accordance with Fig. 2.
C
Elliptical and quadrant steel must be held in place by means of holding rods, chairs, or other positive means throughout the entire casting operation.
D
For these classes and sizes, the minimum practical steel reinforcement is specified. The specified ultimate strength of non-reinforced pipe is greater than the minimum
specified strength for the equivalent diameters.
E
As an alternative, single cage reinforcement may be used. The reinforcement area in square in. per linear foot shall be 0.30 for wall B and 0.20 for wall C.
C76 − 22a
A
TABLE 4 Requirements for Class IV Reinforced Concrete Pipe
NOTE 1—See 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 load
expressed 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 ultimate
load as specified below, multiplied by the internal diameter of the pipe in feet.
D-load to produce a 0.01-in. crack 2000
D-load to produce the ultimate load 3000
Reinforcement, in. /linear ft of pipe wall
Wall A Wall B Wall C
Internal
Concrete Strength, 5000 psi Concrete Strength, 4000 psi Concrete Strength, 4000 psi
Designated
Circular Circular Circular
Diameter,
Wall B Elliptical Wall B Elliptical Wall B Elliptical
Reinforcement Reinforcement Reinforcement
in.
Thickness, Reinforce- Thickness, Reinforce-Thickness, Reinforce-
Inner Outer C Inner Outer C Inner Outer C
in. ment in. ment in. ment
Cage Cage Cage Cage Cage Cage
D
3 3
12 1 ⁄4 0.15 . . . . . . 2 0.07 . . . . . . 2 ⁄4 0.07 . . . . . .
D
7 1
15 1 ⁄8 0.16 . . . . . . 2 ⁄4 0.10 . . . . . . 3 0.07 . . . . . .
D D
1 1
18 2 0.17 . . . 0.15 2 ⁄2 0.14 . . . 0.11 3 ⁄4 0.07 . . . 0.07
D D
1 3 1
21 2 ⁄4 0.23 . . . 0.21 2 ⁄4 0.20 . . . 0.17 3 ⁄2 0.07 . . . 0.07
1 3
24 2 ⁄2 0.29 . . . 0.27 3 0.27 . . . 0.23 3 ⁄4 0.07 0.07 0.08
5 1
27 2 ⁄8 0.33 . . . 0.31 3 ⁄4 0.31 . . . 0.24 4 0.08 0.07 0.09
3 1 1
30 2 ⁄4 0.38 . . . 0.35 3 ⁄2 0.35 . . . 0.27 4 ⁄4 0.09 0.07 0.10
A 3 1
33 . . . . . . . . . 3 ⁄4 0.27 0.16 0.30 4 ⁄2 0.11 0.07 0.12
A
36 . . . . . . . . . 4 0.30 0.18 0.33 4 ⁄4 0.14 0.08 0.15
A
1 1
42 . . . . . . . . . 4 ⁄2 0.35 0.21 0.39 5 ⁄4 0.20 0.12 0.21
A
48 . . . . . . . . . 5 0.42 0.24 0.47 5 ⁄4 0.26 0.16 0.29
A
1 1
54 . . . . . . . . . 5 ⁄2 0.50 0.30 0.55 6 ⁄4 0.34 0.20 0.38
Concrete Strength, 5000 psi
A
60 . . . . . . . . . 6 0.59 0.35 0.66 6 ⁄4 0.41 0.24 0.45
A
1 1
66 . . . . . . . . . 6 ⁄2 0.69 0.41 0.77 7 ⁄4 0.51 0.31 0.57
Concrete Strength, 5000 psi
A
72 . . . . . . . . . 7 0.79 0.47 0.88 7 ⁄4 0.60 0.36 0.68
A A
78 . . . . . . . . . . . . . . . . . . 8 ⁄4 0.71 0.43 0.79
A A
84 . . . . . . . . . . . . . . . . . . 8 ⁄4 0.85 0.51 0.94
A A A
90 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
96 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
102 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
108 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
114 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
120 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
126 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
132 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
138 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
144 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
For 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 those
shown for variations in diameter, loading, or wall thickness. Pipe over 96 in. in diameter shall have two circular cages or an inner circular plus one elliptical cage.
B
As an alternative to configurations 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 than that specified for the outer cage in the table and the total area
of 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, or
An inner and outer cage plus an elliptical cage in accordance with Fig. 2.
For Wall C, in sizes 24 to 33 in., a single circular cage with an area not less than the sum of the specified inner and outer circular reinforcement areas.
C
Elliptical and quadrant steel must be held in place by means of holding rods, chairs, or other positive means throughout the entire casting operation.
D
For these classes and sizes, the minimum practical steel reinforcement is specified.
and 6.6; by an absorption test of the concrete from the wall of the pipe as required in 11.9; and by visual inspection of the finished
pipe to determine its conformance with the accepted material requirements and its freedom from defects.
5.1.2 Acceptance on the Basis of Material Tests and Inspection of Manufactured Pipe for Defects and Imperfections—
Acceptability of the pipe in all diameters and classes produced in accordance with 7.2 shall be determined by the results of such
material tests as are required in 6.2, 6.3, 6.5, and 6.6; by crushing tests on concrete cores or cured concrete cylinders; by an
absorption test of the concrete from the wall of the pipe for each mix design that is used on an order; and by inspection of the
finished pipe including amount and placement of reinforcement to determine its conformance with the accepted design and its
freedom from 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 or 5.1.2
may form the basis of acceptance.
C76 − 22a
A
TABLE 5 Requirements for Class V Reinforced Concrete Pipe
NOTE 1—See 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 load
expressed 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 ultimate
load as specified below, multiplied by the internal diameter of the pipe in feet.
D-load to produce a 0.01-in. crack 3000
D-load to produce the ultimate load 3750
Reinforcement, in. /linear ft of pipe wall
Wall A Wall B Wall C
Internal
Concrete Strength, 6000 psi Concrete Strength, 6000 psi Concrete Strength, 6000 psi
Designated
Circular Circular Circular
Diameter,
Wall B Elliptical Wall B Elliptical Wall B Elliptical
Reinforcement Reinforcement Reinforcement
in.
Thickness, Reinforce- Thickness, Reinforce- Thickness, Reinforce-
Inner Outer C Inner Outer C Inner Outer C
in. ment in. ment in. ment
Cage Cage Cage Cage Cage Cage
A D
12 . . . . . . . . . 2 0.10 . . . . . . 2 ⁄4 0.07 . . . . . .
A D
15 . . . . . . . . . 2 ⁄4 0.14 . . . . . . 3 0.07 . . . . . .
A
1 1
18 . . . . . . . . . 2 ⁄2 0.19 . . . 0.16 3 ⁄4 0.10 . . . . . .
A
3 1
21 . . . . . . . . . 2 ⁄4 0.24 . . . 0.21 3 ⁄2 0.10 . . . . . .
A E
24 . . . . . . . . . 3 0.30 . . . 0.24 3 ⁄4 0.12 0.07 0.12
A
27 . . . . . . . . . 3 ⁄4 0.38 0.23 0.42 4 0.14 0.08 0.16
A
1 1
30 . . . . . . . . . 3 ⁄2 0.41 0.24 0.45 4 ⁄4 0.18 0.11 0.20
A 3 1
33 . . . . . . . . . 3 ⁄4 0.45 0.27 0.51 4 ⁄2 0.23 0.14 0.24
A
36 . . . . . . . . . 4 0.50 0.30 0.56 4 ⁄4 0.27 0.16 0.30
A
1 1
42 . . . . . . . . . 4 ⁄2 0.60 0.36 0.67 5 ⁄4 0.36 0.21 0.40
A
48 . . . . . . . . . 5 0.73 0.44 0.81 5 ⁄4 0.47 0.27 0.52
A A
54 . . . . . . . . . . . . . . . . . . . . 6 ⁄4 0.58 0.35 0.64
A A
60 . . . . . . . . . . . . . . . . . . 6 ⁄4 0.70 0.42 0.78
A A
66 . . . . . . . . . . . . . . . . . . 7 ⁄4 0.84 0.50 0.93
A A
72 . . . . . . . . . . . . . . . . . . 7 ⁄4 0.99 0.59 1.10
A A A
78 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
84 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
90 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
96 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
102 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
108 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
114 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
120 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
126 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
132 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
138 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A A A
144 . . . . . . . . . . . . . . . . . . . . . . . . . . .
...
A
For 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 those
shown for variations in diameter, loading, or wall thickness. Pipe over 96 in. in diameter shall have two circular cages or an inner circular plus one elliptical cage.
B
As an alternative to configurations 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 than that specified for the outer cage in the table and the total area
of 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, or
An inner and outer cage plus an elliptical cage in accordance with Fig. 2.
C
Elliptical and quadrant steel must be held in place by means of holding rods, chairs, or other positive means throughout the entire casting operation.
D
For these classes and sizes, the minimum practical steel reinforcement is specified.
E
As an alternative, single cage reinforcement may be used. The reinforcement area in square in. per linear foot shall be 0.22.
5.2 Age for Acceptance—Pipe shall be considered ready for acceptance when it conforms to the requirements as indicated by the
specified tests.
6. Materials
6.1 Reinforced Concrete—The reinforced concrete shall consist of cementitious materials; mineral aggregates; admixtures, if used;
and water in which steel has been embedded in such a manner that the steel and concrete act together.
6.2 Cementitious materials:
6.2.1 Cement—Cement shall conform to the requirements of Specification C150/C150M, or shall be portland blast-furnace slag
cement, portland-limestone cement, or portland-pozzolan cement conforming to the requirements of Specification C595/C595M,
except that the pozzolan constituent in the Type IP portland-pozzolan cement shall be fly ash.
C76 − 22a
6.2.2 Slag Cement—Slag cement shall conform to the requirements of Grade 100 or 120 of Specification C989/C989M.
6.2.3 Fly Ash—Fly ash shall conform to the requirements of Class F or Class C of Specification C618.
6.2.4 Allowable Combinations of Cementitious Materials—The combination of cementitious materials used in the concrete 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 Portland-pozzolan cement only,
6.2.4.4 Portland-limestone cement only,
6.2.4.5 A combination of portland cement or portland-limestone cement and slag cement,
6.2.4.6 A combination of portland cement or portland-limestone cement and fly ash,
6.2.4.7 A combination of portland cement or portland-limestone cement, slag cement and fly ash, or
6.2.4.8 A combination of portland-pozzolan cement and fly ash.
6.3 Aggregates—Aggregates shall conform to Specification C33/C33M except that the requirement for gradation shall not apply.
6.4 Admixtures—The following admixtures and blends are allowable:
6.4.1 Air-entraining admixture conforming to Specification C260/C260M;
6.4.2 Chemical admixture conforming to Specification C494/C494M;
6.4.3 Chemical admixture for use in producing flowing concrete conforming to Specification C1017/C1017M; and
6.4.4 Chemical admixture or blend approved by the owner.
6.5 Steel Reinforcement—Reinforcement shall consist of wire or welded wire con
...