ASTM A746-03

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: A 746 – 03
Standard Specification for
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Ductile Iron Gravity Sewer Pipe
This standard is issued under the fixed designation A 746; 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.
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1. Scope Construction of Sanitary and Storm Sewers”
2.4 AASHTO Standard:
1.1 This specification covers 4 to 64-in. ductile iron gravity
AASHTO T-99 Standard Method of Test for the Moisture-
sewer pipe centrifugally cast with push-on joints. This speci-
DensityRelationsofSoilsUsinga5.5lb(2.5kg)Rammer
ficationmaybeusedforpipewithothertypesofjoints,asmay
and a 12 in. (305 mm) Drop
be agreed upon at the time of purchase.
1.2 This specification covers trench load design procedures
3. Terminology
for both cement-lined pipe and flexible-lined pipe. Maximum
3.1 Symbols:Symbols:
depth of cover tables are included for both types of linings.
3.1.1 A—outside radius of pipe,
1.3 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for D
ft 5
24
information only.
D
2. Referenced Documents inmetres 5
S D
2000
2
2.1 ASTM Standards: 2 2
3.1.2 a—conversionfactor,lb/ft topsi=144(kN/m tokPa
D2847 Classification of Soils for Engineering Purposes
=1)
(Unified Soil Classification System)
3.1.3 B—1.5 ft (0.457 m)
D3282 Classification of Soils and Soil-Aggregate Mixtures
3.1.4 b—Effective pipe length: 36 in. (0.914 m)
for Highway Construction Purposes
3.1.5 C—surface load factor, Table 1
E8 Test Methods for Tension Testing of Metallic Materials
3.1.6 D—outside diameter, in., Table 2
E23 Test Methods for Notched Bar Impact Testing of 6 6
3.1.7 E—modulus of elasticity, 24 3 10 psi (165.5 3 10
Metallic Materials
kPa)
2.2 ANSI/AWWA Standards:
3.1.8 E8—modulus of soil reaction, psi, Table 3
C104/A21.4 Cement Mortar Lining for Ductile-Iron Pipe
3.1.9 F—impact factor, 1.5
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and Fittings for Water
3
3.1.10 f—design bending stress, 48 000 psi (331 3 10
C111/A21.11 Rubber-Gasket Joints for Ductile-Iron Pres-
kPa)
3
sure Pipe and Fittings
3.1.11 H—depth of cover, ft (m)
3
C150/A21.50 Thickness Design of Ductile-Iron Pipe
3.1.12 K — bending moment coefficient, Table 3
b
C600 Installation of Ductile-Iron Water Mains and Their
3.1.13 K — deflection coefficient, Table 3
x
Appurtenances
3.1.14 P—wheel load, 16 000 lb (7257 kg)
2.3 ASCE Standards:
3.1.15 P — earth load, psi (kPa)
e
Manuals and Reports on Engineering Practice, No.
3.1.16 P— truck load, psi (kPa)
t
37, (WCPF Manual of Practice No. 9). “Design and
3.1.17 P — trench load, psi (kPa) = P + P
v e t
3.1.18 R—reductionfactorwhichtakesintoaccountthefact
that the part of the pipe directly below the wheels is aided in
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This specification is under the jurisdiction of ASTM Committee A04 on Iron
carryingthetruckloadbyadjacentpartsofthepipethatreceive
Castings and is the direct responsibility of Subcommittee A04.12 on Pipes and
little or no load from the wheels, Table 4
Tubes.
3.1.19 t—net thickness, in. (mm)
Current edition approved Dec. 1, 2003. Published January 2004. Originally
approved in 1977. Last previous edition approved in 1999 as A746–99. 3.1.20 t —minimummanufacturingthickness,in., t+0.08,
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(in mm, t + 2.0)
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 3 3
3.1.21 w—soil weight, 120 lb/ft (18.85 kN/m )
Standards volume information, refer to the standard’s Document Summary page on
3.1.22 DX—design deflection, in. (mm),
the ASTM website.
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Floor, New York, NY 10036.
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Drive, Reston, VA 20191.
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A 746–03
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 0.0279
10 0.0046 0.0056 0.0081 0.0106 0.0130 0.0154 0.0179 0.0203 0.0227
12 0.0032 0.0039
...