ASTM A746-18(2022)

Standard Specification for Ductile Iron Gravity Sewer Pipe

ABSTRACT
This specification covers ductile iron gravity sewer pipe centrifugally cast with push-on joints. This also covers trench load design procedures for both cement-lined pipe and flexible-lined pipe. Maximum depths of cover tables are included for both types of linings. Each pipe shall be subjected to a hydrostatic test and maybe performed either before or after the outside coating and inside coating have been applied, but shall be performed before the application of cement-mortar lining or of a special lining. The standard acceptance tests and additional control tests shall also be performed.
SCOPE
1.1 This specification covers 4 to 64 in. ductile iron gravity sewer pipe, centrifugally cast, with push-on joints. This specification may be used for pipe with other types of joints, as may be agreed upon at the time of purchase.  
1.2 This specification covers trench load design procedures for both cement-lined pipe and flexible-lined pipe. Maximum depth of cover tables are included for both types of linings.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 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.

General Information

• Status: Published
• Publication Date: 30-Sep-2022
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A04 - Iron Castings
• Drafting Committee: A04.12 - Pipes and Tubes

Standards Content (Sample)

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:A746 −18 (Reapproved 2022)
Standard Specification for
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Ductile Iron Gravity Sewer Pipe
This standard is issued under the fixed designation A746; 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.
3,4
1. Scope 2.2 ANSI/AWWA Standards:
C104/A21.4Cement Mortar Lining for Ductile-Iron Pipe
1.1 This specification covers 4 to 64 in. ductile iron gravity
and Fittings
sewer pipe, centrifugally cast, with push-on joints. This speci-
C111/A21.11Rubber-Gasket Joints for Ductile-Iron Pres-
ficationmaybeusedforpipewithothertypesofjoints,asmay
sure Pipe and Fittings
be agreed upon at the time of purchase.
C150/A21.50Thickness Design of Ductile-Iron Pipe
1.2 This specification covers trench load design procedures
C600Installation of Ductile-Iron Water Mains and Their
for both cement-lined pipe and flexible-lined pipe. Maximum
Appurtenances
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depth of cover tables are included for both types of linings.
2.3 ASCE Standards:
Manuals and Reports on Engineering Practice, No.
1.3 The values stated in inch-pound units are to be regarded
37,(WCPF Manual of Practice No. 9), “Design and
as standard. The values given in parentheses are mathematical
Construction of Sanitary and Storm Sewers”
conversions to SI units that are provided for information only
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and are not considered standard. 2.4 AASHTO Standard:
AASHTO T 99Standard Method of Test for the Moisture-
1.4 This international standard was developed in accor-
DensityRelationsofSoilsUsinga5.5lb(2.5kg)Rammer
dance with internationally recognized principles on standard-
and a 12 in. (305 mm) Drop
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3. Terminology
mendations issued by the World Trade Organization Technical
3.1 Symbols:
Barriers to Trade (TBT) Committee.
3.1.1 A—outside radius of pipe,
2. Referenced Documents
D
ft 5
2
24
2.1 ASTM Standards:
D2487Practice for Classification of Soils for Engineering D
inmetres 5
S D
Purposes (Unified Soil Classification System) 2000
2 2
D3282 Practice for Classification of Soils and Soil-
3.1.2 a—conversionfactor,lb/ft topsi=144(kN/m tokPa
Aggregate Mixtures for Highway Construction Purposes
=1)
E8/E8MTest Methods for Tension Testing of Metallic Ma-
3.1.3 B—1.5 ft (0.457 m)
terials
3.1.4 b—effective pipe length: 36 in. (0.914 m)
E23Test Methods for Notched Bar Impact Testing of Me-
tallic Materials 3.1.5 C—surface load factor, Table 1
3.1.6 D—outside diameter, in., Table 2
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This specification is under the jurisdiction of ASTM Committee A04 on Iron
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Castings and is the direct responsibility of Subcommittee A04.12 on Pipes and Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Tubes. 4th Floor, New York, NY 10036, http://www.ansi.org.
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Current edition approved Oct. 1, 2022. Published October 2022. Originally Available fromAmericanWaterWorksAssociation (AWWA), 6666W. Quincy
approved in 1977. Last previous edition approved in 2018 as A746–18. DOI: Ave., Denver, CO 80235, http://www.awwa.org.
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10.1520/A0746-18R22. Available fromAmerican Society of Civil Engineers (ASCE), 1801Alexander
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Bell Dr., Reston, VA 20191, http://www.asce.org.
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contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from American Association of State Highway and Transportation
Standards volume information, refer to the standard’s Document Summary page on Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
the ASTM website. http://www.transportation.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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A746−18 (2022)
TABLE 1 Surface Load Factors for Single Truck on Unpaved Road
Pipe Size – in.
Depth
of Cover, 3 4 6 8 10 12 14 16 18
ft
Surface Load Factor – C
2.5 0.0589 0.0713 0.1020 0.1328 0.1615 0.1901 0.2178 0.2443 0.2698
3 0.0437 0.0530 0.0759 0.0990 0.1207 0.1424 0.1637 0.1843 0.2044
4 0.0265 0.0321 0.0460 0.0602 0.0736 0.0871 0.1005 0.1136 0.1265
5 0.0176 0.0213 0.0306 0.0401 0.0490 0.0581 0.0672 0.0761 0.0849
6 0.0125 0.0151 0.0217 0.0284 0.0348 0.0413 0.0478 0.0542 0.0606
7 0.0093 0.0113 0.0162 0.0212 0.0260 0.0308 0.0357 0.0405 0.0453
8 0.0072 0.0087 0.0125 0.0164 0.0201 0.0238 0.0276 0.0313 0.0350
9 0.0057 0.0069 0.0099 0.0130 0.0160 0.0190 0.0219 0.0249 0.0
...