ASTM F1668-16(2022)
(Guide)Standard Guide for Construction Procedures for Buried Plastic Pipe
Standard Guide for Construction Procedures for Buried Plastic Pipe
SIGNIFICANCE AND USE
4.1 This guide may be used as a reference of acceptable open-cut construction practices for the proper installation of buried fiberglass and thermoplastic pipe. This guide may be used as follows:
4.1.1 Installation contractors have an awareness of the level of workmanship required and use this information for bidding purposes and during construction.
4.1.2 Construction inspectors have a reference of acceptable installation practices.
4.1.3 Specification writers may use this guide as a reference in contract documents.
4.1.4 Designers may review this information during planning and design for factors to consider in the preparation of plans and specifications.
4.1.5 The owner of the pipeline may use this guide as a reference for restoration of proper pipe support and embedment when original construction is disturbed due to repairs, modifications, or construction of adjacent or crossing pipelines or cables.
4.2 This guide should not be used to replace project specification requirements, manufacturer's recommendations, plumbing codes, building codes, or ASTM installation standards, but may be used to supplement that information.
SCOPE
1.1 This guide describes installation techniques and considerations for open-cut construction of buried pipe. Although this guide was developed for plastic pipe, the concepts of providing the appropriate soil support, care in handling, correct joining techniques, proper soil compaction methods, and prevention of installation damage may apply to any pipe.
1.1.1 Plastic pipe refers to thermoplastic and fiberglass pipe.
1.1.2 Thermoplastic pipe refers to pipe fabricated from polyvinyl chloride (PVC), polyethylene (PE), acrylonitrile-butadiene styrene (ABS), cross-linked polyethylene (PEX), chlorinated polyvinyl chloride (CPVC), or polypropylene (PP). A list of specifications for these products is given in Appendix X2.
1.1.3 Fiberglass pipe refers to a glass-fiber-reinforced thermosetting-resin pipe. A list of ASTM specifications for these products is given in Appendix X2.
Note 1: Appendix X2 cannot be considered inclusive because there may be unlisted, recently adopted ASTM specifications for new products that may be installed using this guide.
Note 2: Only a few of the ASTM specifications listed in Appendix X2 include the associated fittings. While this guide applies to the installation of pipe, couplings, and fittings, no attempt was made to list all the possible fitting specifications that may be used in conjunction with the pipe specifications. Consult each specification or manufacturer for appropriate fitting standards.
1.1.4 For simplification, the term pipe will be used in this document to mean pipe sections, fittings, and couplings.
1.2 This guide contains general construction information applicable for plastic pipe and supplements the installation standards for the various types of pipe as described in Practices D2321, D2774, D3839, F690, and Guide F645.
Note 3: This guide is not applicable for gas pipe applications as additional requirements may apply.
1.3 Flexible pipe, such as thermoplastic and fiberglass, are typically designed to rely on the stiffness of the soil surrounding the pipe for support. The contract documents should describe the requirements of an appropriate soil support system. The construction practices described in this guide can be instrumental in attaining the required soil stiffness.
1.3.1 A discussion of the interaction between a buried pipe and the surrounding soil and the importance of attaining proper soil support is in Appendix X1.
1.3.2 Following these guidelines will be helpful in preventing local deformations in the pipe.
1.4 This guide does not cover underwater installation, pipe that needs to be supported on piling, perforated pipe used for drainage, or gas pipelines.
1.5 Pipelines through areas described as “expansive soils,” “collapsing soils,” landfills or water-logge...
General Information
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F1668 − 16 (Reapproved 2022) An American National Standard
Standard Guide for
1
Construction Procedures for Buried Plastic Pipe
This standard is issued under the fixed designation F1668; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* system. The construction practices described in this guide can
be instrumental in attaining the required soil stiffness.
1.1 This guide describes installation techniques and consid-
1.3.1 A discussion of the interaction between a buried pipe
erationsforopen-cutconstructionofburiedpipe.Althoughthis
andthesurroundingsoilandtheimportanceofattainingproper
guidewasdevelopedforplasticpipe,theconceptsofproviding
soil support is in Appendix X1.
the appropriate soil support, care in handling, correct joining
1.3.2 Following these guidelines will be helpful in prevent-
techniques, proper soil compaction methods, and prevention of
ing local deformations in the pipe.
installation damage may apply to any pipe.
1.1.1 Plasticpipereferstothermoplasticandfiberglasspipe. 1.4 This guide does not cover underwater installation, pipe
1.1.2 Thermoplastic pipe refers to pipe fabricated from that needs to be supported on piling, perforated pipe used for
polyvinyl chloride (PVC), polyethylene (PE), acrylonitrile- drainage, or gas pipelines.
butadiene styrene (ABS), cross-linked polyethylene (PEX),
1.5 Pipelines through areas described as “expansive soils,”
chlorinatedpolyvinylchloride(CPVC),orpolypropylene(PP).
“collapsing soils,” landfills or water-logged land (such as
Alist of specifications for these products is given in Appendix
swamps) should be constructed using site-specific installation
X2.
procedures and are not discussed in this guide.
1.1.3 Fiberglass pipe refers to a glass-fiber-reinforced
1.6 This guide is not intended to cover all situations.
thermosetting-resin pipe. A list of ASTM specifications for
Specific pipe characteristics, fluid transported, local site
these products is given in Appendix X2.
conditions, environmental concerns, or manufacturer’s recom-
NOTE 1—Appendix X2 cannot be considered inclusive because there
mendations may require different guidelines.
may be unlisted, recently adopted ASTM specifications for new products
1.7 The construction practices presented in this guide may
that may be installed using this guide.
NOTE 2—Only a few of theASTM specifications listed in Appendix X2
be affected by the installation requirements of owners, speci-
include the associated fittings. While this guide applies to the installation
fying organizations, or regulatory agencies for pipelines cross-
ofpipe,couplings,andfittings,noattemptwasmadetolistallthepossible
ing roads and highways, other pipelines or cables, or water-
fitting specifications that may be used in conjunction with the pipe
ways such as streams, drainage channels, or floodways.
specifications. Consult each specification or manufacturer for appropriate
fitting standards.
1.8 Culverts or pipe that are used as passages through water
1.1.4 For simplification, the term pipe will be used in this
retaining embankments (for example, earth dams) may be
document to mean pipe sections, fittings, and couplings. constructed using the principles of this guide, if appropriate
provisions are made to prevent water movement along the
1.2 This guide contains general construction information
outside of the pipe (using impervious soils, cutoff collars, head
applicable for plastic pipe and supplements the installation
walls, etc.).
standardsforthevarioustypesofpipeasdescribedinPractices
D2321, D2774, D3839, F690, and Guide F645. 1.9 The values stated in SI units are to be regarded as the
standard. The inch-pound units in parentheses are given for
NOTE 3—This guide is not applicable for gas pipe applications as
information only.
additional requirements may apply.
NOTE 4—There is no similar or equivalent ISO standard covering the
1.3 Flexible pipe, such as thermoplastic and fiberglass, are
primary subject matter of this guide.
typically designed to rely on the stiffness of the soil surround-
1.10 This standard does not purport to address all of the
ing the pipe for support. The contract documents should
safety concerns, if any, associated with its use. It is the
describe the requirements of an appropriate soil support
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1
This guide is under the jurisdictio
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