AASHTO M 252-2018 Standard Specification for Corrugated Polyethylene Drainage Pipe.pdf
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1、Standard Specification for Corrugated Polyethylene Drainage Pipe AASHTO Designation: M 252-18 Technical Section: 4b, Flexible and Metallic Pipe Release: Group 2 (June) American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001TS
2、-4b M 252-1 AASHTO Standard Specification for Corrugated Polyethylene Drainage Pipe AASHTO Designation: M 252-18 Technical Section: 4b, Flexible and Metallic Pipe Release: Group 2 (June) 1. SCOPE 1.1. This specification covers the requirements and methods of test for corrugated polyethylene (PE) pip
3、e, couplings, and fittings for use in subsurface drainage systems, storm sewers, and in surface drainage (culverts), where soil support is given to the pipes flexible walls in all applications. 1.1.1. Nominal sizes of 75 to 250 mm (3 to 10 in.) are included. 1.1.2. Materials, workmanship, dimensions
4、, pipe stiffness, environmental stress-crack resistance, perforations, joining systems, brittleness and form of markings are specified. Note 1When PE pipe is to be used in locations where the ends may be exposed, consideration should be given to combustibility of the PE and the deteriorating effects
5、 of prolonged exposure to ultraviolet radiation. 1.2. UnitsThe values stated in SI units are to be regarded as standard. Within the text, the U.S. Customary units are shown in parentheses, and may not be exact equivalents. 1.3. The following precautionary caveat pertains only to the test method port
6、ion, Section 9.3 of this specification. 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 and health practices and determine the applicability of regulatory limi
7、tations prior to use. 2. REFERENCED DOCUMENTS 2.1. ASTM Standards: D618, Standard Practice for Conditioning Plastics for Testing D883, Standard Terminology Relating to Plastics D1693, Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics D2122, Standard Test Method for Determin
8、ing Dimensions of Thermoplastic Pipe and Fittings D2412, Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading D3350, Standard Specification for Polyethylene Plastics Pipe and Fittings Materials D4218, Standard Test Method for Determinat
9、ion of Carbon Black Content in Polyethylene Compounds by the Muffle-Furnace Technique F405, Standard Specification for Corrugated Polyethylene (PE) Pipe and Fittings (withdrawn 2015) F412, Standard Terminology Relating to Plastic Piping Systems 2018 by the American Association of State Highway and T
10、ransportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 252-2 AASHTO 3. TERMINOLOGY 3.1. The terminology used in this standard is in accordance with the definitions given in ASTM D883 and ASTM F412 unless otherwise specified. 3.2. bucklingDuring pipe flatte
11、ning testing, any decrease or downward deviation in the pipe load-deflection test curve shall be considered a buckling point. 3.3. crackany break or split that extends through the wall or liner. 3.4. creasea visible irrecoverable indentation. 3.5. reworked materiala plastic from a processors own pro
12、duction that has been reground, pelletized, or solvated after having been previously processed by molding, extrusion, etc. (ASTM D883). 3.6. delaminationA separation between the liner and outer corrugated wall of Type S pipe as evidenced by a visible gap extending completely through at least one cor
13、rugation valley at any point around the circumference of the pipe. 4. CLASSIFICATION 4.1. The corrugated PE pipe covered by this specification is classified as follows: 4.1.1. Type CThis pipe shall have a full circular cross section, with a corrugated surface both inside and outside. Corrugations ma
14、y be either annular or helical. 4.1.1.1. Type CPThis pipe shall be Type C with Class 2 perforations. 4.1.2. Type SThis pipe shall have a full circular cross section, with an outer corrugated pipe wall and a smooth inner liner. Corrugations may be either annular or helical. Type S pipe is not availab
15、le in nominal sizes of less than 100 mm (4 in.). 4.1.2.1. Type SPThis pipe shall be Type S with either Class 1 or Class 2 perforations. 4.2. Class 1 and Class 2 perforations are as described in Sections 7.4.1 and 7.4.2. 5. ORDERING INFORMATION 5.1. Orders using this specification shall include the f
16、ollowing information as necessary to adequately describe the desired product: 5.1.1. AASHTO designation and year of issue; 5.1.2. Type of pipe (Section 4.1); 5.1.3. Diameter and length required, either total length or length of each piece and number of pieces; Note 2Type C and CP pipe less than 200
17、mm (8 in.) in diameter may be supplied coiled; coiling of Type C and CP pipe 200 mm (8 in.) in diameter or greater is not recommended; Type S and SP pipe is not supplied in coils. 5.1.4. Number of couplings; 2018 by the American Association of State Highway and Transportation Officials. All rights r
18、eserved. Duplication is a violation of applicable law.TS-4b M 252-3 AASHTO 5.1.5. For Type SP pipe, class of perforations (Class 2 is furnished if not specified) (Section 7.4); and 5.1.6. Certification, if desired (Section 12.1). 6. MATERIALS 6.1. Basic Materials: 6.1.1. Extruded Pipe and Blow Molde
19、d FittingsPipe and fittings shall be made of virgin PE resin compounds meeting the requirements of ASTM D3350 and cell classification 424420C, except that the carbon black content shall not exceed 5 percent when tested in accordance with D4218. Resins that have higher cell classifications in one or
20、more properties are acceptable provided product requirements are met. 6.1.2. Rotational Molded Fittings and CouplingsFittings and couplings shall be made of virgin PE resins meeting the requirements of ASTM D3350 and cell classification 213320C, except that the carbon black content shall not exceed
21、5 percent when tested in accordance with D4218. Resins that have higher cell classifications in one or more properties are acceptable provided product requirements are met. 6.1.3. Injection Molded Fittings and CouplingsFittings and couplings shall be made of virgin PE resins meeting the requirements
22、 of ASTM D3350 and cell classification 314420C, except that the carbon black content shall not exceed 5 percent when tested in accordance with D4218. Resins that have higher cell classifications in one or more properties are acceptable provided product requirements are met. 6.2. Reworked MaterialIn
23、lieu of virgin PE, clean reworked material may be used, provided that it meets the cell class requirements as described in Section 6.1. 7. REQUIREMENTS 7.1. WorkmanshipThe pipe and fittings shall be free of foreign inclusions and visible defects as defined herein. The ends of the pipe shall be cut s
24、quarely and cleanly so as not to adversely affect joining or connecting. 7.1.1. Visible DefectsCracks, creases, delamination and unpigmented or non-uniformly pigmented pipe are not permissible in the pipe or fittings as furnished. There shall be no evidence of cracking or delamination when tested in
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