Pipe shall be joined with the ADS N ST IB (bell-and-spigot) joint meeting AASHTO M, AASHTO M, or ASTM F The joint shall be soil-tight and . AASHTO M Standard Specification for Corrugated Polyethylene Pipe, to mm ( to in.) Diameter. standard by American Association of. Corrugated Polyethylene Pipe, to mm Diameter. Scope. This specification covers the requirements and strategies of checks for.
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Each manufacturer may establish and maintain its own laboratory for performance of quality control testing or may utilize an approved independent laboratory. Soiltight joints are specified as a function aasht opening size, channel length, and backfill particle size. For Type DP pipe, perforations shall be located in the center of the cells.
Corrugated Polyethylene Pipe AASHTO M —
The following information must be included in the plan: Fittings shall not reduce the inside diameter of the pipe being joined by more than 12 mm 0. A stress crack is an external or internal crack in plastic caused by tensile stresses less than its short-time mechanical strength.
Use the form below to send us your comments or questions: Split couplings shall engage at least two full corrugations on each pipe section. A backfill material containing a high percentage of fine-graded soils requires investigation for the specific type of joint to be used to guard against soil infiltration.
Perforations shall be uniformly spaced along the length and circumference of the pipe. The manufacturer aaehto have current calibration records for the automated or manual weigh-blending equipment. Individual results, not averages, constitute failure. The rows of perforations shall be arranged in two equal groups placed symmetrically on either side of the lower unperforated segment corresponding to the sashto line of the pipe.
Nominal sizes of to mm 12 to 60 in.
The melt-blended sample shall be tested for melt index, density, and NCLS in accordance with the number of hours aasshto the requirements of the standard. The designated quality control technicians will be responsible for overall quality control at the producing plant. If carbon black concentrate is present in the sampled material, the carbon black concentrate shall be removed prior to further sample preparation.
Conduct four tests on specimens cut from the same ring of pipe at degree intervals around the circumference. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Quality control and quality assurance data are to be retained by the manufacturer for 2 years and made available to the specifying agency upon request. The corrugated PE pipe covered by this specification is classified as follows: There shall be no evidence of delamination when tested in accordance with Section 9. Common corrugated fittings include in-line joint fittings, such as couplings and reducers, and branch or complementary assembly fittings such as tees, wyes, and end caps.
The specimen must lie flat on the plate within 3 mm 0. Each certification so furnished shall be signed by a person authorized by the manufacturer.
If you need to print pages from this book, we recommend downloading it as a PDF. The rate of loading shall be the same ashto in Section 9. Watertight joints must meet a 74 kPa The producing plant must have an approved quality control plan. The update must identify the specific product manufactured at the plant.
The corrugation height, hp, shall be determined by the following aashtl Reducer fittings shall not reduce the cross-sectional area of the small size. Its major use is to collect or convey drainage water by open gravity flow, as culverts, storm drains, etc. Fabricated fittings shall be supplied with joints compatible with the overall system.
Note that the number of perforations per meter in each row and inlet area is dependent on the corrugation pitch. An example calculation is shown in Appendix X2. These measurements may aasnto taken at ambient temperature.
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Resins that have higher cell classifications in one or more properties, with the exception of density, are acceptable provided product requirements are met. The buckling deflection limit shall aadhto determined by the following equation: Resins that have higher cell classifications in one or more properties are acceptable provided product requirements are met.
For this condition, the average UCLS failure time for five specimens shall not be less than 34 hrs. The width of slots shall not exceed 3 mm 0.
The average inside diameter shall meet the requirements of Section 7. Jump up to the previous page or down to the next one. Group 2 June 1.