1、Designation:F 1176 01e1An American National StandardStandard Practice forDesign and Installation of Underground ThermoplasticIrrigation Systems With Maximum Working Pressure of 125psi1This standard is issued under the fixed designation F 1176;the number immediately following the designation indicate
2、s the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.e1NOTEKeywords added editorially in November 2003.1.Scope1.1 Th
3、is practice establishes procedures for the design andinstallation of thermoplastic flexible piping systems,for under-ground irrigation systems.Because there is considerable vari-ability in end-use requirements,soil conditions,and thermo-plastic piping characteristics,the intent of this practice is t
4、ooutline general objectives and basics of systems design,properinstallation procedures,and to provide pertinent references.1.2 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are mathemati-cal conversions to SI units which are for information o
5、nly andare not considered 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 limitati
6、ons prior to use.2.Referenced Documents2.1 ASTM Standards:D 1600 Terminology for Abbreviated Terms Relating toPlastics2D 2241 Specification for Poly(Vinyl Chloride)(PVC)Pressure-Rated Pipe(SDR Series)3D 2487 Practice for Classifications of Soils for EngineeringPurposes(Unified Soil Classification Sy
7、stem)4D 2488 Practice for Description and Identification of Soils(Visual-Manual Procedure)4D 2657 Practice for Heat-Joining Polyolefin Pipe and Fit-tings3D 2749 Symbols for Dimensions of Plastic Pipe Fittings3F 402 Practice for Safe Handling of Solvent Cements,Primers,and Cleaners Used for Joining T
8、hermoplastic Pipeand Fittings3F 412 Terminology Relating to Plastic Piping Systems3F 690 Practice for Underground Installation of Thermoplas-tic Pressure Piping Irrigation Systems3F 714 Specification for Polyethylene(PE)Plastic Pipe(SDR-PR)Based on Outside Diameter3F 771 Specification for Polyethyle
9、ne(PE)ThermoplasticHigh-Pressure Irrigation Pipeline Systems3F 1290 Practice for Electrofusion Joining Polyolefin Pipeand Fittings33.Terminology3.1 The terminology used in this practice is in accordancewith Terminology F 412,Terminology D 1600,and Symbols D2749,unless otherwise specified.4.Summary o
10、f Practice4.1 This practice gives standardized criteria and proceduresfor underground installation of thermoplastic pipe in pressureirrigation systems.4.2 Thermoplastic pipe used in this practice is made ofpoly(vinyl chloride)(PVC)or polyethylene(PE)and shall beassembled to withstand the design work
11、ing pressure for thepipeline without leakage,internal restriction,or obstructionthat could reduce line capacity below design requirements.4.3 Joining materials shall be of composition that will notdamage the pipe and shall be recommended for use at thedesign pressure for the pipeline.Consult the man
12、ufacturer fordesign and installation recommendations.4.4 When materials subject to corrosion are used in the line,they shall be adequately protected by wrapping or coating withhigh-quality corrosion preventatives.Wrappings or coatingsapplied to metallic surfaces should not be applied on plastic1This
13、 practice is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.61 on Water.Current edition approved Aug.10,2001.Published October 2001.Originallypublished as F 1176 88.Last previous edition F 1176 93.2Annual Book of ASTM Standa
14、rds,Vol 08.01.3Annual Book of ASTM Standards,Vol 08.04.4Annual Book of ASTM Standards,Vol 04.08.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.pipe or fittings unless it is first established by consulting thepiping manufacturer so that t
15、hey have no detrimental effect onthe plastic.5.Requirements5.1 Working PressureThe pipe line shall have a pressurerating(see Table 1 and Annex A1)greater than the staticpressure or working pressure plus the surge pressure,at anypoint in the system.Surge and working pressures shall notexceed the pipe
16、s pressure class.5.2 Service FactorDetermine all pressure ratings in awater environment of 73.4 6 3.6F(23 6 2C).As thetemperature of the environment or fluid increases,the pipebecomes more ductile.Therefore,the pressure rating must bedecreased for use at higher temperatures to allow for safeoperation of the pipe.The service factors for PVC and PE areshown in Table 2.For PE pipe having improved strengthretention with an increase in temperature and PE pipe used attemperatures exceeding 100F(38C),c
