ASTM_D_7082_-_21.pdf

Designation:D708221An American National StandardStandard Specification forPolyethylene Stay In Place Form System for End Walls forDrainage Pipe1This standard is issued under the fixed designation D7082;the number immediately following the designation indicates 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()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification addresses the requirements for poly-ethylene stay in place forms for end walls or head walls for usewith standard storm drainage systems.1.2 The wall form system consists of a base wall form,acap,an optional riser to adjust the height of the wall above thepipe,and an optional adaptor to adjust the pipe opening toaccommodate smaller pipe sizes.1.3 The form system is manufactured using the rotationalmolding process and is available in different colors.1.4 The values stated in SI units are to be regarded as thestandard,the inch-pounds in parentheses are given for infor-mation only.1.5 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this standard.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.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 PositionD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD883 Terminology Relating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1693 Test Method for Environmental Stress-Cracking ofEthylene PlasticsD4883 Test Method for Density of Polyethylene by theUltrasound Technique3.Terminology3.1 Definitions:3.1.1 For definitions of terms that appear in this practicerelating to plastics,refer to Terminology D883.For abbrevia-tions used in this practice,refer to Terminology D1600.3.1.2 end walla wall installed at the outlet of a stormdrainage pipe.3.1.3 head walla wall installed at the inlet of a stormdrainage pipe.4.Ordering Information4.1 Number and color of base wall forms,4.2 Number and color of riser forms,4.3 Number and color of caps,and4.4 Number,color and size of adaptors.5.Materials and Manufacture5.1 The material used shall be a polyethylene meeting thecriteria in Table 1.5.2 Only virgin materials shall be used.5.3 This product shall be manufactured using a rotationalmolding process.6.Requirements6.1 Wall System Description:1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved May 1,2021.Published May 2021.Originallyapproved in 2004.Last previous edition approved in 2015 as D7082-15.DOI:10.1520/D7082-21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.16.1.1 Base wall form is hollow with opening at the top toaccept fill material and designed to accept either cap or risersection.Base wall has opening in the center for pipe andadaptors as needed.Pipe is secured to base wall form withgalvanized screws.(See Fig.1.)6.1.2 Riser form is hollow with opening at top to accept fillmaterial and cap section.Multiple risers can be installed onbase wall.(See Fig.2.)6.1.3 Cap fits on top of base wall or riser and is secured withgalvanized screws.(See Fig.1.)6.1.4 Adaptor section is used to adjust the size of the pipeopening as needed.Adaptor is secured to base wall form withgalvanized screws and pipe is secured to adaptor with galva-nized screws.(See Fig.2.)6.2 W