ASTM D7082-21

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Designation: D7082 − 15 D7082 − 21 An American National Standard
Standard Specification for
Polyethylene Stay In Place Form System for End Walls for
Drainage Pipe
This standard is issued under the fixed designation D7082; 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*
1.1 This specification addresses the requirements for polyethylene stay in place forms for end walls or head walls for use with
standard storm drainage systems.
1.2 The wall form system consists of a base wall form, a cap, an optional riser to adjust the height of the wall above the pipe, and
an optional adaptor to adjust the pipe opening to accommodate smaller pipe sizes.
1.3 The form system is manufactured using the rotational molding process and is available in different colors.
1.4 The values stated in SI units are to be regarded as the standard, the inch-pounds in parentheses are given for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory requirementslimitations prior to use.
NOTE 1—There is no known ISO equivalent to this standard.
1.6 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.
2. Referenced Documents
2.1 ASTM Standards:
D638 Test Method for Tensile Properties of Plastics
D648 Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position
D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials
D883 Terminology Relating to Plastics
D1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
D1505 Test Method for Density of Plastics by the Density-Gradient Technique
D1600 Terminology for Abbreviated Terms Relating to Plastics
D1693 Test Method for Environmental Stress-Cracking of Ethylene Plastics
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.24 on Plastic Building Products.
Current edition approved Oct. 1, 2015May 1, 2021. Published October 2015May 2021. Originally approved in 2004. Last previous edition approved in 20102015 as D7082
- 04(2010).15. DOI: 10.1520/D7082-15.10.1520/D7082-21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7082 − 21
D4883 Test Method for Density of Polyethylene by the Ultrasound Technique
3. Terminology
3.1 Definitions:
3.1.1 Definitions used in this specification are in accordance with definitions in For definitions of terms that appear in this practice
relating to plastics, refer to Terminology D883 and. For abbreviations in accordance with used in this practice, refer to Terminology
D1600 unless otherwise indicated.
3.1.2 end wall—a wall installed at the outlet of a storm drainage pipe.
3.1.3 head wall—a wall installed at the inlet of a storm drainage pipe.
4. Ordering Information
4.1 Number and color of base wall forms,
4.2 Number and color of riser forms,
4.3 Number and color of caps, and
4.4 Number, color and size of adaptors.
5. Materials and Manufacture
5.1 The material used shall be a polyethylene meeting the criteria in Table 1.
5.2 Only virgin materials shall be used.
TABLE 1 Material Specifications
Resin Properties ASTM Method Value Units
Density (Range) D1505 / D4883 0.9335 – 0.9395 g/cc
Melt Index (Range) D1238 Cond. 190°C, 2.16 kg 3.5 – 7.5 g/10
Environmental Stress Crack Resis- D1693, Cond. A 275 Hr
tance (ESCR), F 100 % lgepal 55 Hr
10 % lgepal
Flexural Modulus (Minimum) D790 at 1 % secant Procedure B 600 (87) Mpa (kpsi)
Tensile Strength at Yield (Minimum) D638, Type IV specimen 17.2 (2500) Mpa
Tensile Break Elongation (Minimum) 50.8 mm/min @ 3.12 mm thick 420 %
(2 in./min @ ⁄8 in. thick)
Deflection Temperature (Minimum) D648 50 °C
@ 0.455 MPa (66 psi) 35 °C
@ 1.82 MPa (264 psi)
TABLE 1 Material Specifications
Resin Properties ASTM Method Value
Density, g/cc D1505 / D4883 0.9335 – 0.9395
Melt Index, g/10 min D1238 Cond. 190°C, 2.16 kg 3.5 – 7.5
Environmental Stress Crack Resis- D1693,
...