1、Designation: F585 94 (Reapproved 2007)F585 13 An American National StandardStandard PracticeGuide forInsertion of Flexible Polyethylene Pipe Into Existing Sewers1This standard is issued under the fixed designation F585; the number immediately following the designation indicates the year of originala
2、doption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. S
3、cope Scope*1.1 This practiceguide describes design and selection considerations and installation procedures for the constructionrehabili-tation of new sanitary and storm sewers by the insertion of polyethylene pipe through solid wall or profile wall or corrugatedpolyethylene pipe into an existing pi
4、pe and along the previously its existing line and grade. The procedures are designedin thisguide are intended to minimize traffic disruption, surface damage, and restoration, with little or no surface restoration andinterruption of service.NOTE 1See CGSB 41-GP-25M.1.2 The polyethylene piping product
5、 manufacturer should be consulted to determine the polyethylene piping productssuitability for insertion renewal as described in this guide.1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for informationonly. mathematical conversions
6、to SI units that are provided for information only and are not considered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and
7、determine the applicability of regulatorylimitations prior to use. See 6.1, 7.1, and 8.1 for additional safety precautions.2. Referenced Documents2.1 ASTM Standards:2D543 Practices for Evaluating the Resistance of Plastics to Chemical ReagentsD1600 Terminology for Abbreviated Terms Relating to Plast
8、icsD2657 Practice for Heat Fusion Joining of Polyolefin Pipe and FittingsD3350 Specification for Polyethylene Plastics Pipe and Fittings MaterialsF412 Terminology Relating to Plastic Piping SystemsF714F1417 Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside DiameterPractice fo
9、r InstallationAcceptance of Plastic Non-pressure Sewer Lines Using Low-Pressure AirF894F1804 Specification for Polyethylene (PE) Large Diameter Profile Wall Sewer and Drain PipePractice for DeterminingAllowable Tensile Load for Polyethylene (PE) Gas Pipe During Pull-In InstallationF2620 Practice for
10、 Heat Fusion Joining of Polyethylene Pipe and Fittings2.2 Other Documents:3PPI Material Handling Guide3. Terminology3.1 DefinitionsDefinitions are in accordance with Terminology F412, unless otherwise specified.4. Significance and Use4.1 The procedures described can be used in conjunction with the m
11、anufacturers specific recommendations to installpolyethylene pipe using the insertion method. The procedures are intended as an aid to and not in replacement of the design and1 This practice is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of
12、 Subcommittee F17.62 on Sewer.Current edition approved May 1, 2007Aug. 1, 2013. Published May 2007September 2013. Originally approved in 1978. Last previous edition approved in 20002007 asF585 94(2000).(2007). DOI: 10.1520/F0585-94R07.10.1520/F0585-13.2 For referencedASTM standards, visit theASTM we
13、bsite, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825, Irving, TX 75062, http:/www.plas
14、ticpipe.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consu
15、lt prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken,
16、PA 19428-2959. United States1review of the project engineer. in this guide are intended as a design and review aid for use by the design engineer in conjunctionwith manufacturers recommendations for installing a polyethylene pipe using the insertion method.5. Design and Selection Considerations5.1 G
17、eneral Guidelines:5.1.1 Host Pipe Condition AssessmentIf the original sewer piping is structurally deteriorated due to offset at the joints orrupture and collapse of the pipe walls, Prior to the selection of polyethylene pipe size and installation procedure, measures shouldbe taken to determine its
18、condition in detail, prior to the selection of pipe size and installation procedure. in detail the conditionof the host (original) sewer piping. A detailed examination should determine if the host sewer piping is structurally sufficient, andthat any joint offsets or other host pipe defects will perm
19、it polyethylene pipe insertion.5.1.2 The presence of obstructions should be determined (see 6.3). Protrusions of lateral or service piping into the old sewer,host sewer pipe, root growths, sedimentation, or mineral deposits, or any combination of these four, may restrict the access for suchobstructi
20、ons, may require remedial work prior to inserting the polyethylene piping. The presence of obstructions must bedetermined (see pipe. 6.3).5.1.3 The To ensure against interference during insertion, the minimum annular clearance between the linerpolyethylene pipeOD and the originalhost pipe should be
21、sufficient to ensure that no interference occurs during insertion. For pipes made inaccordance with SpecificationID should be 10 % of the host pipe ID or 2 in. (50 mm) whichever is less. Greater F714, in general,the liner pipe outside diameter should be no larger than 10 % smaller than the original
22、sewer. For pipes manufactured in accordancewith Specification annular clearance is acceptable. Outside diameter information should be obtained from the polyethylene F894,in general, the liner pipe outside diameter should be no larger than 2 in. smaller than the original sewer. pipe manufacturer.5.1.
23、4 Insertion shafts The number of insertion excavations should be kept to a minimum and should coincide with the areas inwhich where problems have been detected in the existing sewer (see Section 7).5.1.5 Pipe may be preassigned by the heat fusion technique in accordance with Practice D2657.5.1.5 Pip
24、e may also Solid wall or profile wall or corrugated polyethylene pipe may be assembled at the time of insertion usingheat fusion in accordance with Practice F2620mechanical connections or heat fusion. , integral bell and spigot joints, or mechanicalconnections as appropriate for the polyethylene pip
25、ing product.5.2 Flow CharacteristicsAncillary materialsNew polyethylene pipe has a very smooth interior surface of low roughnesscoefficient. Normal usage does not corrode nor abrade the surface and long-term flow characteristics are not substantially impaired.Mechanical fasteners, sealants, grouts a
26、nd other materials that are or are likely to be exposed to sanitary sewage, sewage gases orother corrosive elements of the sanitary sewer environment should be resistant to deleterious effects of the sanitary sewerenvironment. Sealants, grouts and other materials must be selected with the ability to
27、 adequately cure in underwater, sewage orother corrosive environments.5.3 External Loading: LoadingAreas where the host pipe is or may be structurally compromised, or where some or the entirehost pipe had been removed will subject the polyethylene pipe to external loads. Information about the resist
28、ance of polyethylenepipe (pipe stiffness (PS) or ring stiffness constant (RSC), and buckling resistance) to external hydrostatic and earth loads shouldbe obtained from the pipe manufacturer, and is available in some ASTM polyethylene pipe specifications. Design informationabout the external load col
29、lapse resistance of polyethylene pipe is available in Handbooks and Technical Notes published by thePlastics Pipe Institute.5.3.1 Hydraulic LoadsWhen the ground water level may be above the polyethylene pipe, the ground water level and itsduration should be estimated by the design engineer, and the
30、polyethylene pipe should be designed to withstand the estimatedexternal hydrostatic pressure without collapsing.5.3.2 Hydraulic LoadsFilling the AnnulusWhen there is the possibility of ground water level above the pipe, the level andits duration should be estimated by the design engineer and the pip
31、e system designed to withstand the pressure without collapsing.Filling the annulus between the host pipe and the polyethylene pipe with a cementitious grout or other structurally stable materialincreases the resistance of the polyethylene pipe to external hydrostatic or structural load, and may impr
32、ove the overall externalload capacity of the host pipe. Flexible pipe such as polyethylene pipe relies in part on materials that surround the pipe for externalstructural load resistance. Flexible pipe ring stiffness and the stiffness of materials surrounding the flexible pipe act together tosupport
33、external loads. Structurally stable fill materials are materials that remain in place and resist movement from the rise andfall of groundwater around the pipeline. Fill materials may be able to penetrate into cracks and voids in the host pipe, and incombination with the inserted polyethylene pipe pr
34、ovide partial structural rehabilitation. Host pipe condition assessment per 5.1.1should identify if filling the annulus is needed for structural reasons. Hydraulic load analysis per 5.3.1 should identify if filling theannulus is needed for hydraulic load resistance.5.3.1.1 In the event the collapse
35、resistance of the pipe is not sufficient to resist this pressure, the engineer should specify eithera stiffer pipe or filling the annular space with a cementatious grout or other material that will provide adequate support for the pipe.5.3.1.2 The following equation may be used to determine the stan
36、dard dimension ratio of pipe required:F585 132SDR2 1 5 F3 EaS 212 2DPh 5 F 3 2.508EaPh (1)where:SDR = standard dimension ratio (D0/t) of the pipe,Ph = pressure due to head of water, kPa or psi,Ea = apparent (time-corrected) modulus (MPa 103 or psi) for the grade of polyethylene used to manufacture t
37、he pipe,F = design factor to account for installed out of roundness, variability in the estimation of water head, etc. (F has a value lessthan 1.0), and = Poissons ratio (0.45 average value).NOTE 2The choice of value (from manufacturers literature) of Ea will depend on the estimated duration of the
38、application of the load Ph in relationto the design life of the structure. For example, if the total duration of the load Ph is estimated to be 25 years, either continuously applied, or the sumof intermittent periods of loading, the appropriately conservative choice of value for Ea will be that give
39、n for 25 years of continuous loading at themaximum ground temperature expected to be reached over the life of the structure.5.3.3 Earth LoadingPoint Excavation EncasementAt all points where the polyethylene pipe has been exposed, such as atthe insertion shafts, at service connection fittings, or exc
40、avations for polyethylene pipe insertion, or for service connections, orexcavations at other points where the old pipe must be structurally unsound host pipe is removed, the polyethylene pipe and fittingspipe, fittings, and service connections should be encased in a minimum embedment that provides s
41、tructural support for thepolyethylene pipe. Polyethylene pipe embedment design information is available from organizations such as the Plastics PipeInstitute. If the annulus is not filled (5.3.2of ), stabilized embedment material should be used to seal the ends of the excavationagainst embedment mig
42、ration into the annulus. Stabilized embedment material is at least 6 in. (150 mm) of concrete, orcement-stabilized sand, or other stable high-density material as specified by the engineer to prevent deflection due to earth loadingor subsidence. At this point, in preparation for the design engineer.
43、Preparations for placing of the encasement material, materialinclude the removal of debris and soil should be removed along each side of the existinghost pipe down to the spring line. Afterthe encasement material is in placehas been placed and accepted by the design engineer, backfill is placed and
44、compacted to therequired finished grade in accordance with the design engineers specifications. At service line connections, particular care shouldbe taken to ensure compaction of earth beneath the lateral service pipe in order to reduce subsidence and resultant that can causebending at the lateral
45、connection.5.3.4 Host Pipe DeteriorationExisting pipe deterioration on occasion, deterioration Structural deterioration of the originalhostpipe may continue to occur even after the liner polyethylene pipe has been installed. As a result, uneven Uneven or concentratedpoint loading uponon the polyethy
46、lene pipe liner or even subsidence of the soil above the host pipe system may occur. may occurif the host pipe collapses or if large parts of the host pipe fall into the annulus between the host pipe and the polyethylene pipe.This can be avoided by filling the annular space with a cement-sand mixtur
47、e, a low-density grout material, or fine ash. betweenthe inside diameter of the host pipe and the outside diameter of the polyethylene pipe. See 5.3.2.5.3.4 Axial Bending and Radial DeflectionPolyethylene pipe is relatively flexible and may be curved for convenience inhandling and installation. It w
48、ill accommodate reasonable irregularities in external loading or in line and grade. Excessive bending,however, should be avoided, particularly in handling and installation. Longitudinal (axial) bends induced during the insertion stepin transporting pipe lengths from assembly sites to job sites, or p
49、ermanent bends to accommodate line or grade changes, shouldbe limited to radii equivalent to a longitudinal strain recommended by the pipe manufacturer. The minimum allowable radius ofcurvature for any size and weight of pipe can be closely approximated from the following equation:Rc 5 D2a(2)where:Rc = radius of curvature, mm or in.,D = diameter of the inserted pipe, mm or in., anda = allowable axial strain.Radial deflection at bends is automatically controlled if the radius of curvature is maintained as in the preceding paragraph.NOTE 3As an example,
