ASTM F2176-02(2009)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:F2176 −02 (Reapproved 2009) An American National Standard
Standard Specification for
Mechanical Couplings Used on Polyethylene Conduit, Duct
and Innerduct
This standard is issued under the fixed designation F2176; 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.
1. Scope D2444Test Method for Determination of the Impact Resis-
tance of Thermoplastic Pipe and Fittings by Means of a
1.1 This specification establishes requirements for material,
Tup (Falling Weight)
performance, workmanship and test methods for the qualifica-
F412Terminology Relating to Plastic Piping Systems
tion of 2 in. and smaller mechanical couplings that connect to
F2160Specification for Solid Wall High Density Polyethyl-
DR 15.5 and lower polyethylene conduit, duct and innerduct
ene (HDPE) Conduit Based on Controlled Outside Diam-
covered by Specification F2160. Throughout this standard,
eter (OD)
“conduit” refers to “conduit, duct or innerduct” manufactured
in accordance with Specification F2160.
3. Terminology
1.2 The values stated in inch-pound units are to be regarded
3.1 Definitions are in accordance with Terminology F412
as standard. The values given in parentheses are mathematical
and abbreviations are in accordance with Terminology D1600,
conversions to SI units that are provided for information only
unless otherwise specified.
and are not considered standard.
3.2 Definitions of Terms Specific to This Standard:
1.3 Thecouplingscoveredbythisspecificationaretypically
3.2.1 coupling joint, n—the connection between the cou-
designed to join between conduit ends (in-line coupling). The
pling and a conduit end.
same coupling-to-conduit joint design may be used as a part of
3.2.2 duct, n—a conduit (see Terminology F412, conduit).
other coupling joint designs that telescope, or connect to
bulkheads,orotheradapterfittingdesigns.Therequirementsof 3.2.3 inline mechanical couplings, n—a device used to join
this standard apply only to the coupling-to-conduit joint
two conduit ends.
design. The performance requirements of other coupling joint
3.2.4 innerduct, n—a conduit installed inside a conduit.
designs are not a part of this standard.
1.4 The following safety hazards caveat pertains only to the 4. Materials and Manufacture
test methods portion, Section 9 of this specification. This
4.1 Thephysicalpropertiesofeachmaterialusedtoproduce
standard does not purport to address all of the safety concerns,
mechanical couplings shall be available from the coupling
if any, associated with its use. It is the responsibility of the user
manufacturer upon request.
of this standard to establish appropriate safety and health
4.2 Specifications outlining all the physical properties and
practices and determine the applicability of regulatory require-
effects of environmental conditions for materials of manufac-
ments prior to use.
ture shall be available from the coupling manufacturer upon
request.
2. Referenced Documents
NOTE 1—Materials should have a demonstrated resistance to environ-
2.1 ASTM Standards:
mental stress cracking when exposed, under stress, to chemical com-
D638Test Method for Tensile Properties of Plastics
pounds encountered in or external to conduit systems and a demonstrated
D1600TerminologyforAbbreviatedTermsRelatingtoPlas- resistancetobacteriologicaldecomposition.Suchcompoundsinclude,but
are not limited to, alkalines, fertilizers, ice thawing chemicals,
tics
insecticides, herbicides, and acids.
This specification is under the jurisdiction ofASTM Committee F17 on Plastic 5. Performance Requirements
Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.
5.1 The following requirements shall be met on each cou-
Current edition approved March 1, 2009. Published March 2009. Originally
approved 2002. Last previous edition approved in 2002 as F2176–02. DOI: pling design and nominal size.Any revisions by the manufac-
10.1520/F2176-02R09.
turer to the original coupling design after the initial qualifica-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
tiontestingrequiresretestingtoensureconformancewiththese
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
requirements.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. NOTE 2—It is permissible when accomplishing these tests to do so on
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2176−02 (2009)
only the thickest and thinnest (lowest and highest DR) conduit wall TABLE 2 Mechanical Joint Constant Load Resistance
sections in Specification F2160 that the coupling is to be used on. If in
Nominal Conduit Minimum Pullout
those tests all performance requirements are met, all wall thicknesses
Size Resistance
between those tested may be considered as having met the requirements.
⁄4 IPS 190 lbs (86.2 kg)
1 IPS 380 lbs (172.4 kg)
5.2 Pressure Requirements:
1 ⁄4 IPS 470 lbs (213.2 kg)
5.2.1 Sustained Internal Pressure—The coupling/conduit
1 ⁄2 IPS 610 lbs (276.7 kg)
joint shall not fail by leakage as described by and tested in
2 IPS 960 lbs (435.5 kg)
accordance with 9.1.
5.2.2 Sustained External Pressure—The coupling/conduit
joint shall not fail by leakage as described by and tested in
accordance with 9.2.
8.2 Preparation of Specimens for Testing:
5.3 Tensile Strength Requirements :
8.2.1 Prepare test specimens so that the minimum free
5.3.1 Pullout Resistance—The coupling/conduit joint as-
length of conduit from a joint being tested is not less than five
semblies tested shall be able to comply with tensile loading
times the conduit diameter. It is permissible to test multiple
requirements in Table 1 when tested in accordance with 9.3.
couplings together provided they are separated by a minimum
NOTE 3—Minimum pullout resistance’s in Table 1 were derived by the
distance equal to five times the conduit diameter.
following formula. Double the requirements for constant tensile load in
8.2.2 Test joints shall be assembled on the appropriate size
Table 2.
conduit in accordance with the fitting manufacturer’s joining
5.4 Constant Tensile Load—The joint or coupling shall not
procedure.Forrefereetesting,conduitshallbestraightwithno
fail by pullout when loaded to axial tensile load requirements
scratches or gouges.
in Table 2 and tested in accordance with 9.4.
8.2.3 Conditionassembledtestspecimensaminimumof2h
NOTE 4—The constant tensile load test is intended to demonstrate that
at the test temperature to be used after being assembled before
a joint in the conduit system is resistant to the effects of long term creep
initiating test procedure.
that may result from temperature changes and other forces after installa-
NOTE 6—The additional conditioning time following assembly of
tion. Load values in Table 2 were derived by the following methodology.
typical fitting designs used for conduit joining provides more consistent
Nominal modulus of elasticity of high density polyethylene (113000 psi)
test results.
× coeffici
...