ASTM F1429-99(2022)

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: F1429 − 99 (Reapproved 2022)
Standard Test Method for
Assembly Force of Plastic Underground Conduit Joints That
Use Flexible Elastomeric Seals Located in the Bell
This standard is issued under the fixed designation F1429; 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.
1. Scope 3.1.2 chart recorder—a device that records on paper (or
similarpermanentmedium)thereadingsobtainedbyaphysical
1.1 This test method covers the determination of the relative
testing machine, such as a compression tester. The chart
force required to assemble plastic underground conduit joints
recorder receives input from the testing machine in the form of
that use flexible elastomeric seals located in the bell.
electrical signals that are proportional to the test readings.
1.2 The values stated in inch-pound units are to be regarded
3.1.3 gasketed conduit joining system—a push-on conduit
as standard. The values given in parentheses are mathematical
joining system (see joint, push-on in Terminology F412) with
conversions to SI units that are provided for information only
the following three manufacturer-specified components that
and are not considered standard.
influence joint assembly force: (1) the elastomeric seal, (2) the
1.3 This standard does not purport to address all of the
chamfer on the spigot, and (3) the joint lubricant. This system
safety concerns, if any, associated with its use. It is the
is as supplied or recommended by the conduit manufacturer.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Summary of Test Method
mine the applicability of regulatory limitations prior to use.
4.1 A sample of eight gasketed conduit bells of the same
1.4 This international standard was developed in accor-
nominaldiameterarepreparedfromtypicalproductionstockof
dance with internationally recognized principles on standard-
the conduit manufacturer. An aluminum spigot mandrel made
ization established in the Decision on Principles for the
to the specifications of Annex A1 for the conduit size being
Development of International Standards, Guides and Recom-
tested is inserted into each of the eight gasketed conduit bell
mendations issued by the World Trade Organization Technical
specimens by means of a compression tester and the joint
Barriers to Trade (TBT) Committee.
system assembly force is recorded for each specimen. The
mean and standard deviation of the sample of eight recorded
2. Referenced Documents
assembly forces is then calculated and recorded.
2.1 ASTM Standards:
4.2 Any variation in the type of gasket, spigot chamfer, or
D695 Test Method for Compressive Properties of Rigid
joint lubricant specified by the manufacturer constitutes a
Plastics
change in the gasketed conduit joining system and requires that
F412 Terminology Relating to Plastic Piping Systems
a new sample of eight specimens be tested.
3. Terminology
5. Significance and Use
3.1 Definitions of Terms Specific to This Standard:
5.1 The assembly force of a conduit joining system is one
3.1.1 assembly force—the peak force or effort required to
measure of the ease of which the conduit system can be
insert the spigot into the belled end for gasketed conduit
assembled and installed in the field. This test method provides
joining systems.
a means by which to quantify the assembly force of gasketed
conduit joining systems. The results of the testing can be used
to compare and categorize the assembly force of different
This test method is under the jurisdiction of ASTM Committee F17 on Plastic
designs of gasketed conduit joining systems.
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test
Methods.
5.2 This test method is not intended for use as a quality
Current edition approved Feb. 1, 2022. Published March 2022. Originally
control test.
approved in 1992. Last previous edition approved in 2014 as F1429 – 99(2014).
DOI: 10.1520/F1429-99R22.
5.3 Thistestmethodcanbeusedforcomparisonofgasketed
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
conduit joining systems on the basis of assembly force. No
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
information about joint sealing performance can be obtained
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. from the use of this test method.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1429 − 99 (2022)
5.4 This test method covers all plastic conduit with push-on 7.4 Bell dimensions and specifications shall be determined
joints that use flexible elastomeric gaskets located in the bell to by the bell manufacturer, but the specimens shall be represen-
provide the joint seal. tative of normal and customary production by the manufac-
turer.
5.5 This test method is also applicable to all fittings that are
fabricated from conduit covered in 5.4 and that utilize the same 7.5 Test specimens can have any standard wall thickness. It
type of push-on joints as the conduit covered in 5.4, and that is not necessary to test more than one wall thickness per
areintendedforusewiththeconduittypesdescribedin5.4.For nominal conduit size.
purposes of this test method, assembly force data obtained
7.6 Number of Test Specimens—There shall be eight speci-
from the testing of the conduit that is the parent stock of a
mens to be tested for each design of gasketed conduit joining
fitting shall apply to the fitting also.
system and nominal conduit size.
6. Apparatus
8. Conditioning
6.1 Testing Machine—A properly calibrated compression
8.1 Condition specimens, spigot mandrels, and joint lubri-
testing machine of the constant-rate-of-crosshead movement
cant for at least8hinairata temperature of 73 °F 6 7°F
type meeting the requirements of Testing Method D695 shall
(23 °C 64 °C)priortotesting.Begintestingimmediatelyafter
be used to make the tests. The compression tester shall be
conditioning period.
capable of a compression rate of 20 in./min 6 0.5 in./min (500
8.2 Conduct the testing in a room maintained at the condi-
mm/min 6 12.7 mm/min). The compression tester shall be
tioning temperature.
equipped with a chart recorder that is capable of recording
compression force versus time or position.
9. Procedure
6.2 Spigot Mandrels—Spigot mandrels shall be constructed
9.1 Select eight bell specimens of the same nominal size
to mount rigidly to the compression tester. The mandrels shall
which have been prepared and conditioned according to
conform to the dimensions and specifications shown in Annex
Sections 7 and 8 of this test method.
A1.
9.2 Mark the specimens with consecutive numbers, starting
6.3 Joint Lubricant—Joint lubricant shall be used prior to
with “1” and ending with “8.”
the assembly of the conduit joints. It shall be as specified or
supplied by the conduit manufacturer, or both.
9.3 Rigidly mount the proper spigot mandrel for the nomi-
nal size of conduit being tested to the compression tester.
7. Test Specimens
9.4 Markspecimennumberandtypeonchartrecorderpaper
7.1 Specimens shall be comprised of a conduit bell with an
to identify the force tracing that will be recorded.
elastomeric seal.
9.5 Position compression arms of the compression tester to
7.2 Specimens shall have no less than 1 in. (25 mm) and no
provide a gap between the spigot mandrel and the bell
more than 3 in. (76 mm) of nominal conduit diameter extend-
specimen such that access to the spigot m
...