ASTM D2661-14
(Specification)Standard Specification for Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe and Fittings
Standard Specification for Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe and Fittings
ABSTRACT
This specification covers acrylonitrile-butadiene-styrene (ABS) schedule 40 plastic drain, waste, and vent pipe and fittings. ABS plastic which does not meet the material requirements is excluded. ABS plastic shall conform to the minimum content requirements of polymers or polymer blends and shall compose of acrylonitrile, butadiene, styrene or substituted styrene or both, and other monomeric or polymeric components. Pipe and fittings shall be homogenous and free of defects. Other requirements include dimensions, tolerances, stiffness, flattening, impact resistance, and bond strength. Sampling, conditioning, product marking, and quality shall conform to the requirements of this specification.
SCOPE
1.1 This specification covers fittings and single and coextruded acrylonitrile-butadiene-styrene (ABS) plastic drain, waste, and vent pipe (DWV) made to Schedule 40 iron pipe sizes (IPS). Plastic which does not meet the material requirements specified in Section 5 is excluded from single layer and all coextruded layers.
1.2 Specification for fittings for use with pipe meeting the requirements of this specification are given in Annex A1.
1.3 Acrylonitrile-butadiene-styrene plastic, which does not meet the definition of virgin ABS plastic as given in 3.2.2, is excluded, as performance of plastic other than those defined as virgin was not determined. ABS rework plastic, which meets the requirements of rework plastic as given in 5.3, is acceptable.
1.4 Reprocessed plastic or recycled plastic as defined in Terminology D883 is excluded.
1.5 Recommendations for storage, joining, and installation are provided in Appendix X1, Appendix X2, and Appendix X3, respectively.
1.6 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.7 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.
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Designation:D2661 −14 An American National Standard
Standard Specification for
Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic
Drain, Waste, and Vent Pipe and Fittings
This standard is issued under the fixed designation D2661; 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* 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification covers fittings and single and coex-
D618Practice for Conditioning Plastics for Testing
truded acrylonitrile-butadiene-styrene (ABS) plastic drain,
D883Terminology Relating to Plastics
waste, and vent pipe (DWV) made to Schedule 40 iron pipe
D1600TerminologyforAbbreviatedTermsRelatingtoPlas-
sizes (IPS). Plastic which does not meet the material require-
tics
ments specified in Section 5 is excluded from single layer and
D1898Practice for Sampling of Plastics (Withdrawn 1998)
all coextruded layers.
D2122Test Method for Determining Dimensions of Ther-
1.2 Specification for fittings for use with pipe meeting the
moplastic Pipe and Fittings
requirements of this specification are given in Annex A1.
D2235Specification for Solvent Cement for Acrylonitrile-
1.3 Acrylonitrile-butadiene-styrene plastic, which does not
Butadiene-Styrene (ABS) Plastic Pipe and Fittings
meet the definition of virgin ABS plastic as given in 3.2.2,is
D2321PracticeforUndergroundInstallationofThermoplas-
excluded, as performance of plastic other than those defined as
tic Pipe for Sewers and Other Gravity-Flow Applications
virgin was not determined. ABS rework plastic, which meets
D2412Test Method for Determination of External Loading
the requirements of rework plastic as given in 5.3, is accept-
Characteristics of Plastic Pipe by Parallel-Plate Loading
able.
D2444Test Method for Determination of the Impact Resis-
tance of Thermoplastic Pipe and Fittings by Means of a
1.4 Reprocessed plastic or recycled plastic as defined in
Tup (Falling Weight)
Terminology D883 is excluded.
D3311Specification for Drain, Waste, and Vent (DWV)
1.5 Recommendations for storage, joining, and installation
Plastic Fittings Patterns
are provided in Appendix X1, Appendix X2, and Appendix
D3965ClassificationSystemandBasisforSpecificationsfor
X3, respectively.
Rigid Acrylonitrile-Butadiene-Styrene (ABS) Materials
for Pipe and Fittings
1.6 Thetextofthisspecificationreferencesnotes,footnotes,
and appendixes which provide explanatory material. These E105Practice for Probability Sampling of Materials
E122PracticeforCalculatingSampleSizetoEstimate,With
notesandfootnotes(excludingthoseintablesandfigures)shall
not be considered as requirements of the specification. Specified Precision, the Average for a Characteristic of a
Lot or Process
1.7 The values stated in inch-pound units are to be regarded
F402 Practice for Safe Handling of Solvent Cements,
as standard. The values given in parentheses are mathematical
Primers, and Cleaners Used for Joining Thermoplastic
conversions to SI units that are provided for information only
Pipe and Fittings
and are not considered standard.
F412Terminology Relating to Plastic Piping Systems
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
This specification is under the jurisdiction ofASTM Committee F17 on Plastic contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Piping Systems and is the direct responsibility of Subcommittee F17.63 on DWV. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2014. Published January 2015. Originally the ASTM website.
approved in 1967. Last previous edition approved in 2011 as D2661–11. DOI: The last approved version of this historical standard is referenced on
10.1520/D2661-14. www.astm.org.
*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
D2661−14
F1498SpecificationforTaperPipeThreads60°forThermo- 4. Classification
plastic Pipe and Fittings
4.1 The requirements of this specification are intended to
F2135Specification for Molded Drain, Waste, and Vent
provide pipe suitable for the drainage and venting of sewage
(DWV) Short-Pattern Plastic Fittings
and certain other liquid wastes.
2.2 Federal Standard:
NOTE 1—Industrial waste disposal lines should be installed only with
Fed. Std. No. 123Marking for Shipment (Civil Agencies)
the specific approval of the cognizant building code authority since
2.3 Military Standard:
chemicals not commonly found in drains and sewers and temperatures in
excess of 180°F (82°C) may be encountered.
MIL-STD-129Marking for Shipment and Storage
NOTE 2—This specification does not include requirements for pipe and
fittings intended to be used to vent combustion gases.
3. Terminology
3.1 Definitions:
5. Materials
3.1.1 Definitions are in accordance withTerminology F412,
5.1 Material Specification—Virgin black ABS plastic shall
and abbreviations are in accordance with Terminology D1600,
conformtotherequirementsprescribedinSpecificationD3965
unless otherwise specified. The abbreviation for acrylonitrile-
with a cell classification of 4-2-2-2-2.The form of the material
butadiene-styrene is ABS.
shallbeasagreeduponbetweenthesellerandthepurchaserin
3.1.2 coextruded pipe—pipe consisting of two or more
accordance with Specification D3965.
concentric layers of material bonded together in processing by
any combination of temperature, pressure, grafting, 5.2 TheABS plastic shall conform to the following require-
crosslinking, or adhesion. ments:
5.2.1 Acrylonitrile-Butadiene-Styrene (ABS) Plastic—
3.1.3 coextrusion—a process whereby two or more heated
Plasticcontainingpolymersorblendsofpolymersshallcontain
or unheated plastic material streams forced through one or
a minimum of 15% acrylonitrile, 6% butadiene, and 15%
more shaping orifice(s) become one continuously formed
styrene or substituted styrene, or both. ABS plastic shall
piece.
contain no more than 10 % of other monomeric or polymeric
3.1.4 roomtemperature—atemperatureintherangefrom68
components plus other necessary compounding ingredients.
to 85 6 3.6°F (20 to 30 6 2°C).
5.3 Rework Material—The manufacturer shall use only his
3.2 Definitions of Terms Specific to This Standard:
own clean pipe or fitting rework material conforming with
3.2.1 lot—a lot shall consist of all pipe of the same size
these cell class requirements. The pipe or fittings produced
produced from one extrusion line during one designated 24-h
shall meet all the requirements of this specification.
period.
3.2.2 recycled plastic—a plastic prepared from discarded
6. Requirements
articles that have been cleaned and reground.
6.1 General—The pipe and fittings shall be homogeneous
3.2.3 reprocessed plastic—a thermoplastic usually prepared
throughoutandfreeofvisiblecracks,holes,foreigninclusions,
from melt processed scrap or reject parts by a plastics
or other injurious defects. The pipe shall be as uniform as
processor, or from nonstandard or nonuniform virgin material.
commercially practicable in color, opacity, density, and other
3.2.4 virgin ABS plastic—plastic in the form of pellets,
physical properties.
granules, powder, floc, or liquid that has not been subjected to
6.1.1 The requirements in this section are intended only for
use or processing other than that required for its initial
use as quality control tests, not as simulated service tests.
manufacture.
6.2 Dimensions and Tolerances:
6.2.1 Outside Diameter—The outside diameter and toler-
ancesshallmeettherequirementsofTable1whenmeasuredin
accordance with Test Method D2122. The tolerance for out-
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
of-roundness shall apply to pipe prior to shipment.
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
www.dodssp.daps.mil.
TABLE 1 Outside Diameters and Tolerances for ABS Schedule 40 Plastic Drain, Waste, and Vent Pipe
Outside Diameter
Out-of-Roundness Maximum
Nominal Pipe Size, in.
Average, in. (mm) Tolerance on Average, in. (mm) Diameter Minus Minimum
A
Diameter, in. (mm)
1 ⁄4 1.660 (42.16) +0.010, −0.000 (+0.25, −0.00) 0.024 (0.60)
1 ⁄2 1.900 (48.26) +0.010, −0.000 (+0.25, −0.00) 0.024 (0.60)
2 2.375 (60.32) +0.010, −0.000 (+0.25, −0.00) 0.024 (0.60)
3 3.500 (88.90) +0.015, −0.000 (+0.38, −0.00) 0.030 (0.76)
4 4.500 (114.30) +0.015, −0.000 (+0.38, −0.00) 0.030 (0.76)
6 6.625 (168.28) +0.011, −0.011 (+0.28, −0.28) 0.050 (1.27)
A
Measured at time of manufacturing.
D2661−14
TABLE 3 Pipe Stiffness of ABS Schedule 40 Plastic Drain, Waste,
6.2.2 Wall Thickness—The wall thickness and tolerances
and Vent Pipe
shall meet the requirements of Table 2 when measured in
Minimum Pipe
accordance with Test Method D2122.
Stiffness at 5 %
Nominal Pipe
6.2.3 Length—Thepipeshallbeineither10or20-ft(3.05or
Deflection
Size, in.
6.1-m) lengths, unless otherwise specified. The allowable
psi (MPa)
tolerance on length shall be + ⁄2, −0 in. (+12, −0 mm).
1 ⁄4 870 (6.00)
6.3 Performance Requirements:
1 ⁄2 630 (4.34)
6.3.1 Pipe Stiffness— The minimum pipe stiffness values at
2 370 (2.55)
5%deflectionwhenmeasuredinaccordancewithTestMethod 3 320 (2.20)
4 190 (1.31)
D2412, shall equal or exceed the values in Table 3.The rate of
6 95 (0.65)
crosshead motion shall be 0.20 to 0.25 in./min (5.1 to 6.3
mm/min).Threespecimensshallbetested.Ifallthreemeetthis
requirement, the sample meets this requirement. If one or two
fail, additional testing shall be conducted in accordance with
6.3.1.3 The 15% requirement is calculated as follows:
6.3.1.1. If all three fail, the sample does not meet the
requirement. ~Avg 2 LCL!/~Avg! 3100#15% (2)
NOTE 3—For quality control testing, a single specimen may be used
6.3.1.1 Pipe Stiffness and Lower Confidence Limit—In the
with the thinnest wall at the top.
event that one or two of the specimens tested in 6.3.1 fail to
NOTE 4—The 5% deflection criteria is arbitrarily selected for testing
meet the minimum requirement, the average pipe stiffness of
convenience. It should not be considered as a limitation with respect to
eleven specimens shall meet or exceed the minimum require-
in-use deflection. The engineer is responsible for establishing the accept-
able deflection limit.
mentgiveninTable3.The99%lowerconfidencelimit(LCL)
NOTE 5—The strength and load-carrying capabilities of plastic pipe are
shall be within 15% of the average value. The LCL shall be
measured and reported as pipe stiffness, which is determined in accor-
calculated using the Student’s “ t” distribution, with N-1
dance with Test Method D2412. The term “crush strength” is not
degrees of freedom, where N is the number of specimens. The
applicable to plastic piping because the values obtained can be signifi-
critical t value shall be used to at least three significant digits.
cantly different, depending on the bedding, loading, or testing technique
used, and because the term derives from rigid pipe and refers to its
Alternatively,iftheLCLexceedstheminimumPSrequirement
ultimate strength at rupture.
in Table 3, but is not within 15% of the average, the sample
meetstherequirementsofthePipeStiffnesstesting.Theeleven 6.3.2 Pipe Flattening—There shall be no evidence of rup-
specimens include the three tested under 6.3.1, and an addi- ture when pipe is deflected 40% of the initial inside diameter
tional eight with rotation by 35°, as specified in Test Method when tested in accordance with Test Method D2412. The rate
D2412, continuing throughout the remaining specimens. of head approach shall be 0.20 to 0.25 in./min (5.1 to 6.3
6.3.1.2 The LCL based on testing eleven specimens is mm/min). Three specimens shall be tested. All shall meet the
requirements. Failure shall be a crack or break extending
calculated as follows:
entirely through the pipe wall visible to the unaided eye.
LCL 5 ~avgPS! 2 $2.76~std.dev.!/=~N!% (1)
6.3.3 Impact Resistance—The minimum impact resistance,
where:
when tested at the time of manufacture, shall comply with
Table4.TestinaccordancewithTestMethodD2444usingTup
~avgPS! 5 @ ~PS !#/~11!
( i
B and Holder B. Use a 30-lb (13.6 kg) tup for testing all pipe
2 1/2
PS 2 ~ PS! /N
( (
sizes.
~std.dev.! 5 F G
N 2 1
6.3.3.1 Test 10 specimens. When 9 or 10 specimens pass,
N=11.
accept the lot. When 2 or more specimens fail, test 10
additional specimens. When 17 of 20 specimens tested pass,
TABLE 2 Wall Thickness and Tolerance for ABS Schedule 40 accept the lot. When 4 or more of 20 specimens fail, test 20
Drain, Waste, and Vent Pipe
additional specimens. When 32 of 40 specimens pass, accept
A
Wall Thickness the lot. When 9 or more of 40 specimens fail, the lot does not
Nominal Pipe
Minimum Wall, Tolerance,
meet the requirements of this specification.
Size, in.
in. (mm) in. (mm)
1 ⁄4 0.140 (3.56) +0.015 (+0.38)
−0.000 (−0.00)
TABLE 4 Impact Resistance of ABS Schedule 40 Plastic Drain,
1 ⁄2 0.145 (3.68) +0.015 (+0.38)
Waste, and Vent Pipe
−0.000 (−0.00)
Minimum Impact Resistance, ft·lbf (J)
2 0.154 (3.91) +0.015 (+0.38)
Nominal Pipe Size, in.
−0.000 (−0.00) At 73°F (23°C)
3 0.216 (5.42) +0.020 (+0.51)
−0.000 (−0.00)
1 ⁄4 20 (27)
4 0.237 (6.02) +0.024 (+0.61)
1 ⁄2 30 (41)
−0.000 (−0.00)
2 40 (54)
6 0.280 (7.11) +0.030 (+0.76)
3 60 (81)
−0.000 (−0.00)
4 60 (81)
A
6 100 (136)
The minimum is the lowest wall thickness of the pipe at any cross section.
D2661−14
6.3.3.2 Failure of the test specimen shall be shattering or 7.3.2 Forroutinequalitycontroltesting,conditionthespeci-
anycrackorbreakextendingentirelythroughthepipewalland mens at the temperature and humidity of the manufacturers
visible to the unaided eye. testing facility for not less than1hor until the specimens are
at room temperature.
6.4 Coextruded Pipe:
6.4.1 Thickness of Outer Layer—For pipe produced by the
7.4 Test Conditions:
coextrusion process, that is, pipe containing two or more
7.4.1 For referee purposes, conduct tests in the standard
concentric layers, the outer layer shall be at least 0.020 in.
laboratory atmosphere of 73.4 6 3.6°F (23 6 2°C) and 50 6
(0.50mm)thickandshallcontainpigmentsorscreeningagents
5% relative humidity.
to provide protection against UV radiation.
7.4.2 For routine quality control testing, conduct tests at the
6.4.2 Bond—For pipe produced by the coextrusion process,
room temperature and humidity of the manufacturers testing
thatis,pipecontainingtwoormoreconcent
...
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: D2661 − 11 D2661 − 14 An American National Standard
Standard Specification for
Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic
Drain, Waste, and Vent Pipe and Fittings
This standard is issued under the fixed designation D2661; 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 fittings and single and coextruded acrylonitrile-butadiene-styrene (ABS) plastic drain, waste, and
vent pipe (DWV) made to Schedule 40 iron pipe sizes (IPS). Plastic which does not meet the material requirements specified in
Section 5 is excluded from single layer and all coextruded layers.
1.2 Specification for fittings for use with pipe meeting the requirements of this specification are given in Annex A1.
1.3 Acrylonitrile-butadiene-styrene plastic, which does not meet the definition of virgin ABS plastic as given in 3.2.2, is
excluded, as performance of plastic other than those defined as virgin was not determined. ABS rework plastic, which meets the
requirements of rework plastic as given in 5.3, is acceptable.
1.4 Reprocessed plastic or recycled plastic as defined in Terminology D883 is excluded.
1.5 Recommendations for storage, joining, and installation are provided in Appendix X1, Appendix X2, and Appendix X3,
respectively.
1.6 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes
and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.7 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.
2. Referenced Documents
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D1898 Practice for Sampling of Plastics (Withdrawn 1998)
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
D2235 Specification for Solvent Cement for Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe and Fittings
D2321 Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications
D2412 Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading
D2444 Test Method for Determination of the Impact Resistance of Thermoplastic Pipe and Fittings by Means of a Tup (Falling
Weight)
D3311 Specification for Drain, Waste, and Vent (DWV) Plastic Fittings Patterns
D3965 Classification System and Basis for Specifications for Rigid Acrylonitrile-Butadiene-Styrene (ABS) Materials for Pipe
and Fittings
E105 Practice for Probability Sampling of Materials
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or
Process
This specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.63 on DWV.
Current edition approved Aug. 1, 2011Dec. 1, 2014. Published August 2011January 2015. Originally approved in 1967. Last previous edition approved in 20082011 as
D2661 – 08.D2661 – 11. DOI: 10.1520/D2661-11.10.1520/D2661-14.
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.
The last approved version of this historical standard is referenced on www.astm.org.
*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
D2661 − 14
F402 Practice for Safe Handling of Solvent Cements, Primers, and Cleaners Used for Joining Thermoplastic Pipe and Fittings
F412 Terminology Relating to Plastic Piping Systems
F1498 Specification for Taper Pipe Threads 60° for Thermoplastic Pipe and Fittings
F2135 Specification for Molded Drain, Waste, and Vent (DWV) Short-Pattern Plastic Fittings
2.2 Federal Standard:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
2.3 Military Standard:
MIL-STD-129 Marking for Shipment and Storage
3. Terminology
3.1 Definitions:
3.1.1 Definitions are in accordance with Terminology F412, and abbreviations are in accordance with Terminology D1600,
unless otherwise specified. The abbreviation for acrylonitrile-butadiene-styrene is ABS.
3.1.2 coextruded pipe—pipe consisting of two or more concentric layers of material bonded together in processing by any
combination of temperature, pressure, grafting, crosslinking, or adhesion.
3.1.3 coextrusion—a process whereby two or more heated or unheated plastic material streams forced through one or more
shaping orifice(s) become one continuously formed piece.
3.1.4 room temperature—a temperature in the range from 68 to 85 6 3.6°F (20 to 30 6 2°C).
3.2 Definitions of Terms Specific to This Standard:
3.2.1 lot—a lot shall consist of all pipe of the same size produced from one extrusion line during one designated 24-h period.
3.2.2 recycled plastic—a plastic prepared from discarded articles that have been cleaned and reground.
3.2.3 reprocessed plastic—a thermoplastic usually prepared from melt processed scrap or reject parts by a plastics processor,
or from nonstandard or nonuniform virgin material.
3.2.4 virgin ABS plastic—plastic in the form of pellets, granules, powder, floc, or liquid that has not been subjected to use or
processing other than that required for its initial manufacture.
4. Classification
4.1 The requirements of this specification are intended to provide pipe suitable for the drainage and venting of sewage and
certain other liquid wastes.
NOTE 1—Industrial waste disposal lines should be installed only with the specific approval of the cognizant building code authority since chemicals
not commonly found in drains and sewers and temperatures in excess of 180°F (82°C) may be encountered.
NOTE 2—This specification does not include requirements for pipe and fittings intended to be used to vent combustion gases.
5. Materials
5.1 Material Specification—Virgin black ABS plastic shall conform to the requirements prescribed in Specification D3965 with
a cell classification of 4-2-2-2-2. The form of the material shall be as agreed upon between the seller and the purchaser in
accordance with Specification D3965.
5.2 The ABS plastic shall conform to the following requirements:
5.2.1 Acrylonitrile-Butadiene-Styrene (ABS) Plastic—Plastic containing polymers or blends of polymers shall contain a
minimum of 15 % acrylonitrile, 6 % butadiene, and 15 % styrene or substituted styrene, or both. ABS plastic shall contain no more
than 10 % of other monomeric or polymeric components plus other necessary compounding ingredients.
5.3 Rework Material—The manufacturer shall use only his own clean pipe or fitting rework material conforming with these cell
class requirements. The pipe or fittings produced shall meet all the requirements of this specification.
6. Requirements
6.1 General—The pipe and fittings shall be homogeneous throughout and free of visible cracks, holes, foreign inclusions, or
other injurious defects. The pipe shall be as uniform as commercially practicable in color, opacity, density, and other physical
properties.
6.1.1 The requirements in this section are intended only for use as quality control tests, not as simulated service tests.
6.2 Dimensions and Tolerances:
6.2.1 Outside Diameter—The outside diameter and tolerances shall meet the requirements of Table 1 when measured in
accordance with Test Method D2122. The tolerance for out-of-roundness shall apply to pipe prior to shipment.
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://www.dodssp.daps.mil.
D2661 − 14
TABLE 1 Outside Diameters and Tolerances for ABS Schedule 40 Plastic Drain, Waste, and Vent Pipe
Outside Diameter
Out-of-Roundness Maximum
Nominal Pipe Size, in.
Average, in. (mm) Tolerance on Average, in. (mm) Diameter Minus Minimum
A
Diameter, in. (mm)
1 ⁄4 1.660 (42.16) +0.010, −0.000 (+0.25, −0.00) 0.024 (0.60)
1 ⁄2 1.900 (48.26) +0.010, −0.000 (+0.25, −0.00) 0.024 (0.60)
2 2.375 (60.32) +0.010, −0.000 (+0.25, −0.00) 0.024 (0.60)
3 3.500 (88.90) +0.015, −0.000 (+0.38, −0.00) 0.030 (0.76)
4 4.500 (114.30) +0.015, −0.000 (+0.38, −0.00) 0.030 (0.76)
6 6.625 (168.28) +0.011, −0.011 (+0.28, −0.28) 0.050 (1.27)
A
Measured at time of manufacturing.
6.2.2 Wall Thickness—The wall thickness and tolerances shall meet the requirements of Table 2 when measured in accordance
with Test Method D2122.
6.2.3 Length—The pipe shall be in either 10 or 20-ft (3.05 or 6.1-m) lengths, unless otherwise specified. The allowable tolerance
on length shall be + ⁄2, −0 in. (+12, −0 mm).
6.3 Performance Requirements:
6.3.1 Pipe Stiffness— The minimum pipe stiffness values at 5 % deflection when measured in accordance with Test Method
D2412, shall equal or exceed the values in Table 3. The rate of crosshead motion shall be 0.20 to 0.25 in./min (5.1 to 6.3 mm/min).
Three specimens shall be tested. If all three meet this requirement, the sample meets this requirement. If one or two fail, additional
testing shall be conducted in accordance with 6.3.1.1. If all three fail, the sample does not meet the requirement.
6.3.1.1 Pipe Stiffness and Lower Confidence Limit—In the event that one or two of the specimens tested in 6.3.1 fail to meet
the minimum requirement, the average pipe stiffness of eleven specimens shall meet or exceed the minimum requirement given
in Table 3. The 99 % lower confidence limit (LCL) shall be within 15 % of the average value. The LCL shall be calculated using
the Student’s “ t” distribution, with N-1 degrees of freedom, where N is the number of specimens. The critical t value shall be used
to at least three significant digits. Alternatively, if the LCL exceeds the minimum PS requirement in Table 3, but is not within 15 %
of the average, the sample meets the requirements of the Pipe Stiffness testing. The eleven specimens include the three tested under
6.3.1, and an additional eight with rotation by 35°, as specified in Test Method D2412, continuing throughout the remaining
specimens.
6.3.1.2 The LCL based on testing eleven specimens is calculated as follows:
LCL 5 ~avg PS!2 $2.76~std. dev.!/=~N!% (1)
where:
~avg PS!5@ ~PS !#/~11!
( i
2 1/2
PS 2~ PS! /N
( (
~std. dev.!5F G
N 2 1
N = 11.
6.3.1.3 The 15 % requirement is calculated as follows:
TABLE 2 Wall Thickness and Tolerance for ABS Schedule 40
Drain, Waste, and Vent Pipe
A
Wall Thickness
Nominal Pipe
Minimum Wall, Tolerance,
Size, in.
in. (mm) in. (mm)
1 ⁄4 0.140 (3.56) +0.015 (+0.38)
−0.000 (−0.00)
1 ⁄2 0.145 (3.68) +0.015 (+0.38)
−0.000 (−0.00)
2 0.154 (3.91) +0.015 (+0.38)
−0.000 (−0.00)
3 0.216 (5.42) +0.020 (+0.51)
−0.000 (−0.00)
4 0.237 (6.02) +0.024 (+0.61)
−0.000 (−0.00)
6 0.280 (7.11) +0.030 (+0.76)
−0.000 (−0.00)
A
The minimum is the lowest wall thickness of the pipe at any cross section.
D2661 − 14
TABLE 3 Pipe Stiffness of ABS Schedule 40 Plastic Drain, Waste,
and Vent Pipe
Minimum Pipe
Stiffness at 5 %
Nominal Pipe
Deflection
Size, in.
psi (MPa)
1 ⁄4 870 (6.00)
1 ⁄2 630 (4.34)
2 370 (2.55)
3 320 (2.20)
4 190 (1.31)
6 95 (0.65)
~Avg 2 LCL!/~Avg! 3100 # 15 % (2)
NOTE 3—For quality control testing, a single specimen may be used with the thinnest wall at the top.
NOTE 4—The 5 % deflection criteria is arbitrarily selected for testing convenience. It should not be considered as a limitation with respect to in-use
deflection. The engineer is responsible for establishing the acceptable deflection limit.
NOTE 5—The strength and load-carrying capabilities of plastic pipe are measured and reported as pipe stiffness, which is determined in accordance
with Test Method D2412. The term “crush strength” is not applicable to plastic piping because the values obtained can be significantly different,
depending on the bedding, loading, or testing technique used, and because the term derives from rigid pipe and refers to its ultimate strength at rupture.
6.3.2 Pipe Flattening—There shall be no evidence of rupture when pipe is deflected 40% of the initial inside diameter when
tested in accordance with Test Method D2412. The rate of head approach shall be 0.20 to 0.25 in./min (5.1 to 6.3 mm/min). Three
specimens shall be tested. All shall meet the requirements. Failure shall be a crack or break extending entirely through the pipe
wall visible to the unaided eye.
6.3.3 Impact Resistance—The minimum impact resistance, when tested at the time of manufacture, shall comply with Table 4.
Test in accordance with Test Method D2444 using Tup B and Holder B. Use a 30-lb (13.6 kg) tup for testing all pipe sizes.
6.3.3.1 Test 10 specimens. When 9 or 10 specimens pass, accept the lot. When 2 or more specimens fail, test 10 additional
specimens. When 17 of 20 specimens tested pass, accept the lot. When 4 or more of 20 specimens fail, test 20 additional specimens.
When 32 of 40 specimens pass, accept the lot. When 9 or more of 40 specimens fail, the lot does not meet the requirements of
this specification.
6.3.3.2 Failure of the test specimen shall be shattering or any crack or break extending entirely through the pipe wall and visible
to the unaided eye.
6.4 Coextruded Pipe:
6.4.1 Thickness of Outer Layer—For pipe produced by the coextrusion process, that is, pipe containing two or more concentric
layers, the outer layer shall be at least 0.020 in. (0.50 mm) thick and shall contain pigments or screening agents to provide
protection against UV radiation.
6.4.2 Bond—For pipe produced by the coextrusion process, that is, pipe containing two or more concentric layers, the bond
between the layers shall be strong and uniform. It shall not be possible to separate any two layers with a probe or point of a knife
blade so t
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