ASTM F1429-99(2005)
(Test Method)Standard Test Method for Assembly Force of Plastic Underground Conduit Joints That Use Flexible Elastomeric Seals Located in the Bell
Standard Test Method for Assembly Force of Plastic Underground Conduit Joints That Use Flexible Elastomeric Seals Located in the Bell
SIGNIFICANCE AND USE
The assembly force of a conduit joining system is one measure of the ease of which the conduit system can be assembled and installed in the field. This test method provides 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 designs of gasketed conduit joining systems.
This test method is not intended for use as a quality control test.
This test method can be used for comparison of gasketed conduit joining systems on the basis of assembly force. No information about joint sealing performance can be obtained from the use of this test method.
This test method covers all plastic conduit with push-on joints that use flexible elastomeric gaskets located in the bell to provide the joint seal.
This test method is also applicable to all fittings that are fabricated from conduit covered in 5.4 and that utilize the same type of push-on joints as the conduit covered in 5.4, and that are intended for use with the conduit types described in 5.4. For purposes of this test method, assembly force data obtained from the testing of the conduit that is the parent stock of a fitting shall apply to the fitting also.
SCOPE
1.1 This test method covers the determination of the relative force required to assemble plastic underground conduit joints that use flexible elastomeric seals located in the bell.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values stated in parentheses are provided for information purposes only.
1.3This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
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An American National Standard
Designation: F 1429 – 99 (Reapproved 2005)
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 F 1429; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope influence joint assembly force: (1) the elastomeric seal, (2) the
chamfer on the spigot, and (3) the joint lubricant. This system
1.1 This test method covers the determination of the relative
is as supplied or recommended by the conduit manufacturer.
force required to assemble plastic underground conduit joints
that use flexible elastomeric seals located in the bell.
4. Summary of Test Method
1.2 The values stated in inch-pound units are to be regarded
4.1 A sample of eight gasketed conduit bells of the same
as the standard. The values stated in parentheses are provided
nominaldiameterarepreparedfromtypicalproductionstockof
for information purposes only.
the conduit manufacturer. An aluminum spigot mandrel made
1.3 This standard does not purport to address all of the
to the specifications of Annex A1 for the conduit size being
safety concerns, if any, associated with its use. It is the
tested is inserted into each of the eight gasketed conduit bell
responsibility of the user of this standard to establish appro-
specimens by means of a compression tester and the joint
priate safety and health practices and determine the applica-
system assembly force is recorded for each specimen. The
bility of regulatory limitations prior to use.
mean and standard deviation of the sample of eight recorded
2. Referenced Documents assembly forces is then calculated and recorded.
4.2 Any variation in the type of gasket, spigot chamfer, or
2.1 ASTM Standards:
joint lubricant specified by the manufacturer constitutes a
D 695 Test Method for Compressing Properties of Rigid
change in the gasketed conduit joining system and requires that
Plastics
a new sample of eight specimens be tested.
F 412 Terminology Relating to Plastic Piping Systems
5. Significance and Use
3. Terminology
5.1 The assembly force of a conduit joining system is one
3.1 Definitions of Terms Specific to This Standard:
measure of the ease of which the conduit system can be
3.1.1 assembly force—the peak force or effort required to
assembled and installed in the field. This test method provides
insert the spigot into the belled end for gasketed conduit
a means by which to quantify the assembly force of gasketed
joining systems.
conduit joining systems. The results of the testing can be used
3.1.2 chart recorder—a device that records on paper (or
to compare and categorize the assembly force of different
similarpermanentmedium)thereadingsobtainedbyaphysical
designs of gasketed conduit joining systems.
testing machine, such as a compression tester. The chart
5.2 This test method is not intended for use as a quality
recorder receives input from the testing machine in the form of
control test.
electrical signals that are proportional to the test readings.
5.3 Thistestmethodcanbeusedforcomparisonofgasketed
3.1.3 gasketed conduit joining system—a push-on conduit
conduit joining systems on the basis of assembly force. No
joining system (see joint, push-on in Terminology F 412) with
information about joint sealing performance can be obtained
the following three manufacturer-specified components that
from the use of this test method.
5.4 This test method covers all plastic conduit with push-on
This test method is under the jurisdiction of ASTM Committee F17 on Plastic
joints that use flexible elastomeric gaskets located in the bell to
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test
provide the joint seal.
Methods.
5.5 This test method is also applicable to all fittings that are
Current edition approved May 1, 2005. Published May 2005. Originally
approved in 1992. Last previous edition approved in 1999 as F 1429 – 99.
fabricated from conduit covered in 5.4 and that utilize the same
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
type of push-on joints as the conduit covered in 5.4, and that
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
areintendedforusewiththeconduittypesdescribedin5.4.For
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. purposes of this test method, assembly force data obtained
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 1429 – 99 (2005)
from the testing of the conduit that is the parent stock of a 8. Conditioning
fitting shall apply to the fitting also.
8.1 Condition specimens, spigot mandrels, and joint lubri-
cant for at least 8 h in air at a temperature of 73 6 7°F (23 6
6. Apparatus
4°C) prior to testing. Begin testing immediately after condi-
6.1 Testing Machine—A properly calibrated compression
tioning period.
testing machine of the constant-rate-of-crosshead movement
8.2 Conduct the testing in a room maintained at the condi-
type meeting the requirements of Testing Method D 695 shall
tioning temperature.
be used to make the tests. The compression tester shall be
9. Procedure
capable of a compression rate of 20 6 0.5 in./min (500 6 12.7
mm/min). The compression tester shall be equipped with a
9.1 Select eight bell specimens of the same nominal size
chart recorder that is capable of recording compression force
which have been prepared and conditioned according to
versus time or position.
Sections 7 and 8 of this test method.
6.2 Spigot Mandrels—Spigot mandrels shall be constructed
9.2 Mark the specimens with consecutive numbers, starting
to mount rigidly to the compression tester. The mandrels shall
with “1” and ending with “8.”
conform to the dimensions and specifications shown in Annex
9.3 Rigidly mount the proper spigot mandrel for the nomi-
A1.
nal size of conduit being tested to the compression tester.
6.3 Joint Lubricant—Joint lubricant shall be used prior to
9.4 Markspecimennumberandtypeonchartrecorderpaper
the assembly of the conduit joints. It shall be as specified or
to identify the force tracing that will be recorded.
supplied by the conduit manufacturer, or both.
9.5 Position compression arms of the compression tester to
provide a gap between the spigot mandrel and the bell
7. Test Specimens
specimen such that access to the spigot mandrel and bell
7.1 Specimens shall be comprised of a conduit bell with an
specimen is easily achieved.
elastomeric seal.
9.6 Stir the joint lubricant to remix any separation that may
7.2 Specimens shall have no less than 1 in. (25 mm) and no
have occurred.
more than 3 in. (76 mm) of nominal conduit diameter extend-
9.7 Using a paint brush or sponge, apply the joint lubricant
ing past the bottom of the bell shoulder (see Fig. 1).
to the gasket and spigot mandrel. Make sure to cover the entire
7.3 The bottom of each specimen (spigot end) shall be cut
contact surface of the gasket and halfway to the depth-of-
perpendicular to the axis of the bell barrel within 61° (see Fig.
insertion line on the spigot mandrel, leaving no dry spots.Also
1).
be sure that the entire surface of the chamfer on the spigot
7.4 Bell dimensions and specifications shall be determined
mandrel is covered.
by the bell
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