1、Designation:F142999(Reapproved 2014)Standard Test Method forAssembly Force of Plastic Underground Conduit Joints ThatUse Flexible Elastomeric Seals Located in the Bell1This standard is issued under the fixed designation F1429;the number immediately following the designation indicates the year oforig
2、inal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the relativeforce require
3、d to assemble plastic underground conduit jointsthat use flexible elastomeric seals located in the bell.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not co
4、nsidered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.
5、2.Referenced Documents2.1 ASTM Standards:2D695 Test Method for Compressive Properties of RigidPlasticsF412 Terminology Relating to Plastic Piping Systems3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 assembly forcethe peak force or effort required toinsert the spigot into the
6、belled end for gasketed conduitjoining systems.3.1.2chart recordera device that records on paper(orsimilar permanent medium)the readings obtained by a physicaltesting machine,such as a compression tester.The chartrecorder receives input from the testing machine in the form ofelectrical signals that
7、are proportional to the test readings.3.1.3 gasketed conduit joining systema push-on conduitjoining system(see joint,push-on in Terminology F412)withthe following three manufacturer-specified components thatinfluence joint assembly force:(1)the elastomeric seal,(2)thechamfer on the spigot,and(3)the
8、joint lubricant.This systemis as supplied or recommended by the conduit manufacturer.4.Summary of Test Method4.1 A sample of eight gasketed conduit bells of the samenominal diameter are prepared from typical production stock ofthe conduit manufacturer.An aluminum spigot mandrel madeto the specificat
9、ions of Annex A1 for the conduit size beingtested is inserted into each of the eight gasketed conduit bellspecimens by means of a compression tester and the jointsystem assembly force is recorded for each specimen.Themean and standard deviation of the sample of eight recordedassembly forces is then
10、calculated and recorded.4.2 Any variation in the type of gasket,spigot chamfer,orjoint lubricant specified by the manufacturer constitutes achange in the gasketed conduit joining system and requires thata new sample of eight specimens be tested.5.Significance and Use5.1 The assembly force of a condu
11、it joining system is onemeasure of the ease of which the conduit system can beassembled and installed in the field.This test method providesa means by which to quantify the assembly force of gasketedconduit joining systems.The results of the testing can be usedto compare and categorize the assembly
12、force of differentdesigns of gasketed conduit joining systems.5.2 This test method is not intended for use as a qualitycontrol test.5.3 This test method can be used for comparison of gasketedconduit joining systems on the basis of assembly force.Noinformation about joint sealing performance can be o
13、btainedfrom the use of this test method.5.4 This test method covers all plastic conduit with push-onjoints that use flexible elastomeric gaskets located in the bell toprovide the joint seal.5.5 This test method is also applicable to all fittings that arefabricated from conduit covered in 5.4 and tha
14、t utilize the sametype of push-on joints as the conduit covered in 5.4,and thatare intended for use with the conduit types described in 5.4.For1This test method is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.40 on TestMet
15、hods.Current edition approved Dec.1,2014.Published January 2015.Originallyapproved in 1992.Last previous edition approved in 2009 as F1429 99(2009).DOI:10.1520/F1429-99R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual
16、 Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 purposes of this test method,assembly force data obtainedfrom the testing of the conduit that is the parent stock of afitting shall apply to the fitting also.6.Apparatus6.1 Testing MachineA properly calibrated compressiontesting machine of the constant-rate-of-crosshead movementtype
