1、Designation:F186706(Reapproved 2012)Standard Practice forInstallation of Folded/Formed Poly(Vinyl Chloride)(PVC)Pipe Type A for Existing Sewer and Conduit Rehabilitation1This standard is issued under the fixed designation F1867;the number immediately following the designation indicates the year ofor
2、iginal 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 practice covers the procedures for the rehabilitationof sewer l
3、ines and conduits 4 in.(102 mm)to 18 in.(457 mm)in diameter by the insertion of a folded/formed PVC pipe thatis heated,pressurized,and expanded to conform to the wall ofthe original conduit forming a new structural pipe-within-a-pipe.This rehabilitation process can be used in a variety ofgravity app
4、lications such as sanitary sewers,storm sewers,andprocess piping.1.2 This practice is to be used with the material specified inSection 6 of Specification F1871.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI un
5、its that are provided for information onlyand are not considered standard.1.4 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 th
6、e applica-bility of regulatory limitations prior to use.1.5 There is no similar or equivalent ISO Standard.2.Referenced Documents2.1 ASTM Standards:2D638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection Temperature of PlasticsUnder Flexural Load in the Edgewise PositionD
7、790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1784 Specification for Rigid Poly(Vinyl Chloride)(PVC)Compounds and Chlorinated Poly(Vinyl Chloride)(CPVC)CompoundsD2122 Te
8、st Method for Determining Dimensions of Ther-moplastic Pipe and FittingsF412 Terminology Relating to Plastic Piping SystemsF1417 Practice for Installation Acceptance of Plastic Non-pressure Sewer Lines Using Low-Pressure AirF1871 Specification for Folded/Formed Poly(Vinyl Chlo-ride)Pipe Type A for E
9、xisting Sewer and Conduit Reha-bilitation2.2 Uni-Bell Standard:UNI-B-5-89 Recommended Practice for the Installation ofPolyvinyl Chloride(PVC)Sewer Pipe33.Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology F412,and abbreviations are in accordance with Termi-nology D1600,unless
10、otherwise indicated.The abbreviationfor poly(vinyl chloride)plastics is PVC.3.1.1 The term TYPE A is not an abbreviation but rather anarbitrary designation for PVC compounds with a minimumvalue for modulus in tension as listed in 6.1 and a maximumvalue as defined by cell limit 1 of Specification D17
11、84.3.2 Definitions of Terms Specific to This Standard:3.2.1 dimples(dimpling),nWhere a side connection meetsthe existing conduit,there is no support for the PVC pipeduring forming,causing a point of thermoplastic pipe expan-sion slightly beyond the existing pipe wall.This formation ofan external dep
12、arture from the formed pipe wall is termeddimpling.3.2.2 flattened pipe,na flattened pipe has been manufac-tured and calibrated round,then subsequently cooled anddeformed into a flattened shape for coiling purposes.Later,atthe time of installation at the project site,the flattened pipe willbe formed
13、 into the folded shape when inserted into the existingsewer and conduit rehabilitation.1This standard is under the jurisdiction of Committee F17 on Plastic PipingSystems and is the direct responsibility of Subcommittee F17.67 on TrenchlessPlastic Pipeline Technology.Current edition approved April 1,
14、2012.Published May 2012.Originallyapproved in 1998.Last previous edition approved in 2006 as F1867 06.DOI:10.1520/F1867-06R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refe
15、r to the standards Document Summary page onthe ASTM website.3Available from Uni-Bell PVC PipeAssociation,2711 LBJ Freeway,Suite 1000,Dallas,TX 75234,http:/www.uni-bell.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.3 folded pipe,
16、npipe that has been manufactured andcalibrated round,then subsequently cooled and deformed intoa folded shape for use in existing sewer and conduit rehabili-tation(see Fig.1).3.2.4 formed field sample,nA formed field sample isformed when the folded pipe has been inserted into a mold pipeand expanded with steam heat and pressure.3.2.5 formed pipe,na folded pipe that has been insertedinto an existing sewer or conduit and expanded with steam heatand pressure,and,if required by the manufacturer,with