ASTM C506-15
(Specification)Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe
Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe
ABSTRACT
This specification covers reinforced arch-shaped concrete pipe to be used for the conveyance of sewage, industrial wastes, storm water, and for the construction of culverts. Pipe manufactured according to this specification shall be of three classes identified as Class A-II, A-III, and A-IV. The reinforced concrete shall consist of cementitious materials, mineral aggregates, and water, in which steel has been embedded in such a manner that the steel and concrete act together. The pipe shall be designed to meet both the 0.01 in. crack and ultimate strength requirements determined by conducting plant load bearing tests, material tests, and inspection of manufactured pipe for visual defects and imperfections. The reinforcement, joint, and manufacture are detailed.
SCOPE
1.1 This specification covers reinforced arch-shaped concrete pipe to be used for the conveyance of sewage, industrial wastes, storm water, and for the construction of culverts.
1.2 This specification is the inch-pound companion to C506M; therefore, no SI equivalents are presented in the specification.
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 the 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.
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Designation:C506 −15
StandardSpecification for
Reinforced Concrete Arch Culvert, Storm Drain, and Sewer
Pipe
This standard is issued under the fixed designation C506; 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 C309 Specification for Liquid Membrane-Forming Com-
pounds for Curing Concrete
1.1 This specification covers reinforced arch-shaped con-
C494/C494M Specification for Chemical Admixtures for
crete pipe to be used for the conveyance of sewage, industrial
Concrete
wastes, storm water, and for the construction of culverts.
C497 Test Methods for Concrete Pipe, Manhole Sections, or
1.2 This specification is the inch-pound companion to
Tile
C506M; therefore, no SI equivalents are presented in the
C595 Specification for Blended Hydraulic Cements
specification.
C618 Specification for Coal Fly Ash and Raw or Calcined
Natural Pozzolan for Use in Concrete
NOTE 1—This specification is a manufacturing and purchase specifica-
tion only, and does not include requirements for bedding, backfill, or the C822 Terminology Relating to Concrete Pipe and Related
relationship between field load condition and the strength classification of
Products
pipe. However, experience has shown that the successful performance of
C989 Specification for Slag Cement for Use in Concrete and
this product depends upon the proper selection of the class of pipe, type
Mortars
of bedding and backfill, and care that the installation conforms to the
C1017/C1017M Specification for Chemical Admixtures for
construction specifications. The owner of the reinforced concrete pipe
specified herein is cautioned that he must correlate the field requirements
Use in Producing Flowing Concrete
with the class of pipe specified and provide inspection at the construction
C1116 Specification for Fiber-Reinforced Concrete and
site.
Shotcrete
C1602/C1602M Specification for Mixing Water Used in the
2. Referenced Documents
Production of Hydraulic Cement Concrete
2.1 ASTM Standards:
A36/A36M Specification for Carbon Structural Steel
3. Terminology
A615/A615M SpecificationforDeformedandPlainCarbon-
3.1 Definitions—For definitions of terms relating to con-
Steel Bars for Concrete Reinforcement
crete pipe, see Terminology C822.
A706/A706M Specification for Deformed and Plain Low-
Alloy Steel Bars for Concrete Reinforcement
4. Classification
A1064/A1064M Specification for Carbon-Steel Wire and
4.1 Pipe manufactured according to this specification shall
Welded Wire Reinforcement, Plain and Deformed, for
beofthreeclassesidentifiedasClassA-II,A-III,andA-IV.The
Concrete
strength requirements are prescribed in Table 1.
C33 Specification for Concrete Aggregates
C150 Specification for Portland Cement
5. Basis of Acceptance
C260 Specification for Air-Entraining Admixtures for Con-
5.1 Unlessotherwisedesignatedbytheowneratthetimeof,
crete
or before placing an order, there are two separate and alterna-
tive bases of acceptance. Independent of the method of
This specification is under the jurisdiction of ASTM Committee C13 on
acceptance, the pipe shall be designed to meet both the 0.01-in.
Concrete Pipe and is the direct responsibility of Subcommittee C13.02 on
crack and ultimate strength requirements.
Reinforced Sewer and Culvert Pipe.
5.1.1 Acceptance on Basis of Plant Load Bearing Tests,
Current edition approved Jan. 1, 2015. Published January 2015. Originally
Material Tests, and Inspection of Manufactured Pipe for Visual
approved in 1963. Last previous edition approved in 2014 as C506 – 14. DOI:
10.1520/C0506-15.
Defects and Imperfections—Acceptability of the pipe in all
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
diameters and classes produced in accordance with 7.1 or 7.2,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
shall be determined by the results of the three-edge-bearing
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tests as defined in 11.3.1; by such material tests as are required
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C506−15
A
TABLE 1 Strength Requirements for Reinforced Concrete Pipe
C
Double Line Reinforcement
B
f'c, MPA
Continuous Basic
D
Additional Reinforcement = A Single Line
Approx- D s
Reinforcement = A
Mini- Mini- s
Reinforcement
imate
T, mum mum
“U” “V”
Equivalent
Class Inner Cage Outer Cage
in. Rise, Span,
(Inner Cage) (Outer Cage)
Round
in. in.
Size, in. Dimen- Dimen-
A-II A-III A-IV A-II A-III A-IV A-II A-III A-IV sion, A-II A-III A-IV sion, A-II A-III A-IV A-II A-III A-IV
in. in.
15 2 ⁄4 11 18 4 4 4 . . . . . . . . . . . . . . 0.08 0.12 0.17
1 1
18 2 ⁄2 13 ⁄2 22 4 4 4 . . . . . . . . . . . . . . 0.11 0.14 0.26
3 1
21 2 ⁄8 15 ⁄2 26 4 4 4 . . . . . . . . . . . . . . 0.12 0.17 0.29
24 3 18 28 ⁄2 4 4 4 . . . . . . . . . . . . . . 0.16 0.21 0.32
1 1 1
30 3 ⁄2 22 ⁄2 36 ⁄4 4 4 4 0.09 0.12 0.18 0.07 0.09 0.14 26 0.09 0.12 0.18 29 0.07 0.09 0.12 0.18 0.24 0.36
5 3
36 4 26 ⁄8 43 ⁄8 4 4 4 0.11 0.15 0.21 0.09 0.12 0.17 30 0.11 0.15 0.21 34 0.09 0.12 0.16 0.21 0.30 0.44
1 5 1
42 4 ⁄2 31 ⁄16 51 ⁄8 4 4 4 0.12 0.18 0.27 0.10 0.14 0.21 34 0.12 0.18 0.27 39 0.10 0.14 0.21 0.26 0.36 0.54
48 5 36 58 ⁄2 4 4 . 0.15 0.21 . 0.12 0.17 . 42 0.15 0.21 . 43 0.12 0.17 . 0.30 0.44 .
54 5 ⁄2 40 65 4 4 . 0.18 0.24 . 0.14 0.19 . 48 0.18 0.24 . 49 0.14 0.19 . 0.36 0.48 .
60 6 45 73 4 4 . 0.21 0.27 . 0.17 0.21 . 52 0.21 0.27 . 55 0.17 0.21 . 0.42 0.56 .
72 7 54 88 4 5 . 0.26 0.36 . 0.20 0.27 . 60 0.26 0.36 . 67 0.20 0.27 . 0.52 0.72 .
84 8 62 102 4 5 . 0.32 0.44 . 0.24 0.34 . 68 0.32 0.44 . 77 0.24 0.34 . 0.64 0.88 .
90 8 ⁄2 72 115 . . . . . . . . . . . . . . . . . . . .
96 9 77 ⁄2 122 . . . . . . . . . . . . . . . . . . . .
108 10 87 ⁄8 138 . . . . . . . . . . . . . . . . . . . .
120 11 96 ⁄8 154 . . . . . . . . . . . . . . . . . . . .
1 3
132 10 106 ⁄2 168 ⁄4 . . . . . . . . . . . . . . . . . . . .
D-Loads for 3-Edge-Bearing Method
Class 0.01-in. Ultimate
Crack
II 1000 1500
III 1350 2000
IV 2000 3000
Note—Test load in pounds per linear foot
equals D-load × inside span in feet.
A
For modified or special designs, see 7.3.
B
f'c, ksi = minimum compressive strength of concrete in thousands of pounds-force per square inch.
C
As an alternative to designs requiring double line reinforcement, the reinforcement may be positioned and proportioned so that the total reinforcement of the inner cage
plus the middle cage shall not be less than that specified for the inner cage continuous basic reinforcement, and the additional reinforcement “U” and the total reinforcement
of the outer cage plus the middle cage shall not be less than that specified for the outer cage continuous basic reinforcement and the additional reinforcement “V.”
D
A = circumferential steel area in square inches per longitudinal foot of pipe barrel in each continuous basic cage and additional cages in area denoted “U” and “V.”
s
Dimensions “U” and “V” are measured on the center line of the culvert wall.
in accordance with 6.2, 6.3, 6.5, and 6.6, by an absorption test 5.2 Age for Acceptance—Pipe shall be considered ready for
of the concrete from the wall of the pipe as required in 11.9; acceptancewhentheyconformtotherequirementsasindicated
and by visual inspection of the finished pipe to determine its by the specified tests.
conformance with the accepted design and its freedom from
defects.
6. Materials
5.1.2 Acceptance on Basis of Material Tests and Inspection
6.1 The aggregate shall be so sized, graded, proportioned,
of Manufactured Pipe for Defects and Imperfections—
and mixed with such proportions of portland cement, blended
Acceptability of the pipe in all diameters and classes produced
hydraulic cement, or portland cement and supplementary
in accordance with 7.1 or 7.2 shall be determined by the results
cementing materials, or admixtures, or a combination thereof,
of such material tests as are required in 6.2, 6.3, 6.5, and 6.6;
if used, and water to produce a homogeneous concrete mixture
bycrushingtestsonconcretecoresorcuredconcretecylinders;
of such quality that the pipe will conform to the test and design
by an absorption test of the concrete from the wall of the pipe
requirements of this specification. In no case, however, shall
for each mix design that is used on an order; and by inspection
the proportion of portland cement, blended hydraulic cement,
of the finished pipe, including amount and placement of
or a combination of portland cement and supplementary
reinforcement, to determine its conformance with the accepted
cementing materials be less than 470 lb/yd .
design and its freedom from defects.
6.2 Cementitious Materials:
5.1.3 Whenagreeduponbytheownerandthemanufacturer,
any portion or any combination of the tests itemized in 5.1.1 or 6.2.1 Cement—Cementshallconformtotherequirementsof
5.1.2 may form the basis of acceptance. Specification C150, or shall be portland blast-furnace slag
C506−15
cement, or slag modified portland cement, or portland- 6.4.1 Air-entraining admixture conforming to Specification
pozzolan cement conforming to the requirements of Specifica- C260;
tion C595, except that the pozzolan constituent in the Type IP
6.4.2 Chemical admixture conforming to Specification
portland-pozzolan cement shall be fly ash.
C494/C494M;
6.2.2 Ground Granulated Blast-Furnace Slag (GGBFS)—
6.4.3 Chemical admixture for use in producing flowing
GGBFS shall conform to the requirements of Grade 100 or 120
concrete conforming to Specification C1017/C1017M; and
of Specification C989.
6.4.4 Chemical admixture or blend approved by the owner.
6.2.3 Fly Ash—Fly ash shall conform to the requirements of
6.5 Steel Reinforcement—Reinforcement shall conform to
Class F or Class C of Specification C618.
the requirements of Specification A1064/A1064M, or bars
6.2.4 Allowable Combinations of Cementitious Materials—
conforming to Specification A36/A36M, Specification A615/
Thecombinationofcementitiousmaterialsusedintheconcrete
A615M Grade 40 or 60, or Specification A706/A706M Grade
shall be one of the following:
60. For helically wound cages only, weld shear tests are not
6.2.4.1 Portland cement only,
required.
6.2.4.2 Portland blast furnace slag cement only,
6.2.4.3 Portland pozzolan cement only,
6.6 Synthetic Fibers—Collated fibrillated virgin polypropyl-
6.2.4.4 A combination of portland cement and ground
ene fibers may be used, at the manufacturer’s option, in
granulated blast-furnace slag,
concrete pipe as a nonstructural manufacturing material. Only
6.2.4.5 A combination of portland cement and fly ash,
Type III synthetic fibers designed and manufactured specifi-
6.2.4.6 A combination of portland cement, ground granu-
cally for use in concrete and conforming to the requirements of
lated blast-furnace slag, and fly ash, or
Specification C1116 shall be accepted.
6.2.4.7 A combination of portland pozzolan cement and fly
ash.
7. Design
6.3 Aggregates—Aggregates shall conform to Specification
7.1 Size and Dimensions—The standard sizes of arch pipe
C33 except that the requirement for gradation shall not apply.
are listed in Table 1. The internal dimensions for each standard
6.4 Admixtures and Blends—The following admixtures and size shall be as defined in Fig. 1, subject to the permissible
blends are allowable: variations of Section 12.
A5 Rise2 R
2 2
B5 A1 sR 2 R d 2 C
œ 2 3
Span
C5 2 R
Approximate
Equivalent Water
Rise, in. Span, in. A,in. B,in. C,in. R ,in. R ,in. R ,in.
2 1 2 3
Round Area, ft
Size, in.
3 11 31 7 5 1
15 1.1 11 18 ⁄8 4 ⁄16 4 ⁄32 22 ⁄8 10 ⁄8 4 ⁄32
1 1 3 1 3 1
18 1.65 13 ⁄2 22 − ⁄4 65 ⁄4 27 ⁄2 13 ⁄4 5 ⁄4
1 3 1 3 1 3 1
21 2.2 15 ⁄2 26 ⁄4 6 ⁄4 7 ⁄4 35 ⁄2 14 ⁄4 5 ⁄4
1 7 29 21 11 9 19
24 2.8 18 28 ⁄2 3 ⁄16 5 ⁄32 9 ⁄32 40 ⁄16 14 ⁄16 4 ⁄32
1 1 3 11 3 3 1
30 4.4 22 ⁄2 36 ⁄4 3 ⁄4 7 ⁄16 12 ⁄32 51 18 ⁄4 6 ⁄32
5 3 1 9 1 1 3
36 6.4 26 ⁄8 43 ⁄4 4 ⁄8 8 ⁄16 15 ⁄2 62 22 ⁄2 6 ⁄8
5 1 1 1 1 9
42 8.8 31 ⁄16 51 ⁄8 5 ⁄16 10 ⁄16 18 73 26 ⁄4 7 ⁄16
1 19 1 3
48 11.4 36 58 ⁄2 611 ⁄32 20 ⁄2 84 30 8 ⁄4
5 11 1 3 13
54 14.3 40 65 6 ⁄8 13 22 ⁄16 92 ⁄2 33 ⁄8 9 ⁄16
1 11 9 1 7
60 17.7 45 73 7 ⁄2 14 ⁄16 25 ⁄32 105 37 ⁄2 11 ⁄32
7 9
72 25.6 54 88 9 17 31 ⁄16 126 45 12 ⁄16
21 1 1 31
84 34.6 62 102 10 18 ⁄32 37 ⁄32 162 ⁄2 52 13 ⁄32
13 7 9
90 44.5 72 115 13 23 ⁄16 38 ⁄32 183 59 19 ⁄32
1 1 11 15 1
96 51.7 77 ⁄4 122 15 ⁄4 24 ⁄32 40 ⁄16 218 62 20 ⁄16
1 1 27 5 3
108 66.0 87 ⁄8 138 17 ⁄8 26 ⁄32 46 ⁄8 269 70 22 ⁄8
7 7 7 3
120 81.8 96 ⁄8 154 18 ⁄8 29 ⁄32 53 301 ⁄8 78 24
1 3 7 15 1 5 7
132 99.1 106 ⁄2 168 ⁄4 20 ⁄8 32 ⁄16 57 ⁄2 329 85 ⁄8 26 ⁄8
FIG. 1Cross-Sectional Shape of Arch Pipe
C506−15
7.2 Design Tables—The wall thickness, compressive 8.1.2 Where two lines of reinforcement of arch shape
strength of concrete, and the area of circumferential reinforce- corresponding to the contour of the pipe are used, each line
ment shall be as prescribed in Table 1, subject to the provisions shall be so placed that the covering of concrete over the
of 7.3 and Sections 11 and 12. reinforcement is 1 in.
7.2.1 Footnotes to the tables herein are intended to be
8.1.3 The location of the reinforcement shall be subject to
amplifications of the tabulated requirements and are to be the permissible variations in dimensions given in 12.5. Re-
considered applicable and binding as if they were contained in
quirements for placement and protective covering of the
the body of the specification. concrete from the inner or outer surface of the pipe do not
apply to that portion of a cage which is flared so as to extend
7.3 Modified and Special Designs:
into the bell or reduced in diameter so as to extend into the
7.3.1 If permitted by the owner, the manufacturer may
spigot.
request approval by the owner of modified designs that differ
8.1.3.1 Where the wall reinforcement does not extend into
from the designs in this Section 7 or special designs for sizes
the joint, the maximum longitudinal distance to the last
andloadsbeyondthoseshowninTable1,orspecialdesignsfor
circumferential from the inside shoulder of the bell o
...
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: C506 − 14 C506 − 15
Standard Specification for
Reinforced Concrete Arch Culvert, Storm Drain, and Sewer
Pipe
This standard is issued under the fixed designation C506; 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 arch-shaped concrete pipe to be used for the conveyance of sewage, industrial wastes,
storm water, and for the construction of culverts.
1.2 This specification is the inch-pound companion to C506M; therefore, no SI equivalents are presented in the specification.
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 the 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.
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 Specification for Concrete Aggregates
C150 Specification for Portland Cement
C260 Specification for Air-Entraining Admixtures for Concrete
C309 Specification for Liquid Membrane-Forming Compounds for Curing Concrete
C494/C494M Specification for Chemical Admixtures for Concrete
C497 Test Methods for Concrete Pipe, Manhole Sections, or Tile
C595 Specification for Blended Hydraulic Cements
C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
C822 Terminology Relating to Concrete Pipe and Related Products
C989 Specification for Slag Cement for Use in Concrete and Mortars
C1017/C1017M Specification for Chemical Admixtures for Use in Producing Flowing Concrete
C1116 Specification for Fiber-Reinforced Concrete and Shotcrete
C1602/C1602M Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete
3. Terminology
3.1 Definitions—For definitions of terms relating to concrete pipe, see Terminology C822.
4. Classification
4.1 Pipe manufactured according to this specification shall be of three classes identified as Class A-II, A-III, and A-IV. The
strength requirements are prescribed in Table 1.
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 May 1, 2014Jan. 1, 2015. Published May 2014January 2015. Originally approved in 1963. Last previous edition approved in 20132014 as
C506 – 13a.C506 – 14. DOI: 10.1520/C0506-14.10.1520/C0506-15.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C506 − 15
A
TABLE 1 Strength Requirements for Reinforced Concrete Pipe
C
Double Line Reinforcement
B
f 'c, MPA
Continuous Basic
D
Additional Reinforcement = A Single Line
Approx- D s
Reinforcement = A
Mini- Mini- s
Reinforcement
imate
T, mum mum
“U” “V”
Equivalent
Class Inner Cage Outer Cage
in. Rise, Span,
(Inner Cage) (Outer Cage)
Round
in. in.
Size, in. Dimen- Dimen-
A-II A-III A-IV A-II A-III A-IV A-II A-III A-IV sion, A-II A-III A-IV sion, A-II A-III A-IV A-II A-III A-IV
in. in.
15 2 ⁄4 11 18 4 4 4 . . . . . . . . . . . . . . 0.08 0.12 0.17
1 1
18 2 ⁄2 13 ⁄2 22 4 4 4 . . . . . . . . . . . . . . 0.11 0.14 0.26
3 1
21 2 ⁄8 15 ⁄2 26 4 4 4 . . . . . . . . . . . . . . 0.12 0.17 0.29
24 3 18 28 ⁄2 4 4 4 . . . . . . . . . . . . . . 0.16 0.21 0.32
1 1 1
30 3 ⁄2 22 ⁄2 36 ⁄4 4 4 4 0.09 0.12 0.18 0.07 0.09 0.14 26 0.09 0.12 0.18 29 0.07 0.09 0.12 0.18 0.24 0.36
5 3
36 4 26 ⁄8 43 ⁄8 4 4 4 0.11 0.15 0.21 0.09 0.12 0.17 30 0.11 0.15 0.21 34 0.09 0.12 0.16 0.21 0.30 0.44
1 5 1
42 4 ⁄2 31 ⁄16 51 ⁄8 4 4 4 0.12 0.18 0.27 0.10 0.14 0.21 34 0.12 0.18 0.27 39 0.10 0.14 0.21 0.26 0.36 0.54
48 5 36 58 ⁄2 4 4 . 0.15 0.21 . 0.12 0.17 . 42 0.15 0.21 . 43 0.12 0.17 . 0.30 0.44 .
54 5 ⁄2 40 65 4 4 . 0.18 0.24 . 0.14 0.19 . 48 0.18 0.24 . 49 0.14 0.19 . 0.36 0.48 .
60 6 45 73 4 4 . 0.21 0.27 . 0.17 0.21 . 52 0.21 0.27 . 55 0.17 0.21 . 0.42 0.56 .
72 7 54 88 4 5 . 0.26 0.36 . 0.20 0.27 . 60 0.26 0.36 . 67 0.20 0.27 . 0.52 0.72 .
84 8 62 102 4 5 . 0.32 0.44 . 0.24 0.34 . 68 0.32 0.44 . 77 0.24 0.34 . 0.64 0.88 .
90 8 ⁄2 72 115 . . . . . . . . . . . . . . . . . . . .
96 9 77 ⁄2 122 . . . . . . . . . . . . . . . . . . . .
108 10 87 ⁄8 138 . . . . . . . . . . . . . . . . . . . .
120 11 96 ⁄8 154 . . . . . . . . . . . . . . . . . . . .
1 3
132 10 106 ⁄2 168 ⁄4 . . . . . . . . . . . . . . . . . . . .
D-Loads for 3-Edge-Bearing Method
Class 0.01-in. Ultimate
Crack
II 1000 1500
III 1350 2000
IV 2000 3000
Note—Test load in pounds per linear foot
equals D-load × inside span in feet.
A
ForFor modified or special designs, see 7.3.
B
f 'c, ksi = minimum compressive strength of concrete in thousands of pounds-force per square inch.
C
AsAs an alternative to designs requiring double line reinforcement, the reinforcement may be positioned and proportioned so that the total reinforcement of the inner cage
plus the middle cage shall not be less than that specified for the inner cage continuous basic reinforcement, and the additional reinforcement “U ”” and the total
reinforcement of the outer cage plus the middle cage shall not be less than that specified for the outer cage continuous basic reinforcement and the additional reinforcement
“V.”
D
A = circumferential steel area in square inches per longitudinal foot of pipe barrel in each continuous basic cage and additional cages in area denoted “U ”” and “V.”
s
Dimensions “U ”” and “V ”” are measured on the center line of the culvert wall.
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.
5.1.1 Acceptance on 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 accordance
with 6.2, 6.3, 6.5, 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 design and its freedom from defects.
5.1.2 Acceptance on 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 7.1 or 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 the manufacturer, any portion or any combination of the tests itemized in 5.1.1 or
5.1.2 may form the basis of acceptance.
5.2 Age for Acceptance—Pipe shall be considered ready for acceptance when they conform to the requirements as indicated by
the specified tests.
C506 − 15
6. Materials
6.1 The aggregate shall be so sized, graded, proportioned, and mixed with such proportions of portland cement, blended
hydraulic cement, or portland cement and supplementary cementing materials, or admixtures, or a combination thereof, if used,
and water to produce a homogeneous concrete mixture of such quality that the pipe will conform to the test and design
requirements of this specification. In no case, however, shall the proportion of portland cement, blended hydraulic cement, or a
combination of portland cement and supplementary cementing materials be less than 470 lb/yd .
6.2 Cementitious Materials:
6.2.1 Cement—Cement shall conform to the requirements of Specification C150, or shall be portland blast-furnace slag cement,
or slag modified portland cement, or portland-pozzolan cement conforming to the requirements of Specification C595, except that
the pozzolan constituent in the Type IP portland-pozzolan cement shall be fly ash.
6.2.2 Ground Granulated Blast-Furnace Slag (GGBFS)—GGBFS shall conform to the requirements of Grade 100 or 120 of
Specification C989.
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 A combination of portland cement and ground granulated blast-furnace slag,
6.2.4.5 A combination of portland cement and fly ash,
6.2.4.6 A combination of portland cement, ground granulated blast-furnace slag, and fly ash, or
6.2.4.7 A combination of portland pozzolan cement and fly ash.
6.3 Aggregates—Aggregates shall conform to Specification C33 except that the requirement for gradation shall not apply.
6.4 Admixtures and Blends—The following admixtures and blends are allowable:
6.4.1 Air-entraining admixture conforming to Specification C260;
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 conform to the requirements of Specification A1064/A1064M, or bars
conforming to Specification A36/A36M, Specification A615/A615M Grade 40 or 60, or Specification A706/A706M Grade 60. For
helically wound cages only, weld shear tests are not required.
6.6 Synthetic Fibers—Collated fibrillated virgin polypropylene fibers may be used, at the manufacturer’s option, in concrete
pipe as a nonstructural manufacturing material. Only Type III synthetic fibers designed and manufactured specifically for use in
concrete and conforming to the requirements of Specification C1116 shall be accepted.
7. Design
7.1 Size and Dimensions—The standard sizes of arch pipe are listed in Table 1. The internal dimensions for each standard size
shall be as defined in Fig. 1, subject to the permissible variations of Section 12.
7.2 Design Tables—The wall thickness, compressive strength of concrete, and the area of circumferential reinforcement shall
be as prescribed in Table 1, subject to the provisions of 7.3 and Sections 11 and 12.
7.2.1 Footnotes to the tables herein are intended to be amplifications of the tabulated requirements and are to be considered
applicable and binding as if they were contained in the body of the specification.
7.3 Modified and Special Designs:
7.3.1 If permitted by the owner, the manufacturer may request approval by the owner of modified designs that differ from the
designs in this Section 7 or special designs for sizes and loads beyond those shown in Table 1, or special designs for pipe sizes
that do not have steel reinforcement areas shown in Table 1.
7.3.2 Such modified or special designs shall be based on rational or empirical evaluations of the ultimate strength and cracking
behavior of pipe and shall fully describe to the owner any deviations from the requirements of this Section 7. The descriptions of
modified or special designs shall include the wall thickness, the concrete strength, and the area, type, placement, number of layers,
and strength of the steel reinforcement.
7.3.3 The manufacturer shall submit to the owner proof of the adequacy of the proposed modified or special design. Such proof
may comprise the submission of certified three-edge-bearing tests already made, which are acceptable to the owner or, if such
three-edge-bearing tests are not available or acceptable, the manufacturer may be required to perform proof tests on sizes and
classes selected by the owner to demonstrate the adequacy of the proposed design.
7.3.4 Such pipe must meet all of the test and performance requirements specified by the owner in accordance with Section 5.
C506 − 15
A 5Rise 2R
2 2
B 5A1 sR 2R d 2C
œ 2 3
Span
C 5 2R
Approximate
Equivalent Water
Rise, in. Span, in. A, in. B, in. C, in. R , in. R , in. R , in.
2 1 2 3
Round Area, ft
Size, in.
3 11 31 7 5 1
15 1.1 11 18 ⁄8 4 ⁄16 4 ⁄32 22 ⁄8 10 ⁄8 4 ⁄32
1 1 3 1 3 1
18 1.65 13 ⁄2 22 − ⁄4 6 5 ⁄4 27 ⁄2 13 ⁄4 5 ⁄4
1 3 1 3 1 3 1
21 2.2 15 ⁄2 26 ⁄4 6 ⁄4 7 ⁄4 35 ⁄2 14 ⁄4 5 ⁄4
1 7 29 21 11 9 19
24 2.8 18 28 ⁄2 3 ⁄16 5 ⁄32 9 ⁄32 40 ⁄16 14 ⁄16 4 ⁄32
1 1 3 11 3 3 1
30 4.4 22 ⁄2 36 ⁄4 3 ⁄4 7 ⁄16 12
...
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