AASHTO M 304:2011 Standard Specification for Poly(Vinyl Chloride) (PVC) Profile Wall Drain Pipe and Fittings Based on Controlled Inside Diameter.
8.1.1. Referee Tesring—W hen conditioning is required for referee tests, condition the specimens in accordance with Procedure A of ASTM D 618 at 23 ± 2°C (73.5 ± 3.5°F) and 50 percent ±5 percent relative humidity for not less than 40 hours prior to test. Conduct tests under the same conditions of temperature and humidity, unless otherwise specified.
8.1.2. Quality control Testing—Condition specimens for a minimum of 4 hours in air or 1 hour in water at 23 ± 2°C (73.5 ± 3.5°F). Test the specimens at 23 ± 2°C (73.5 ± 3.5°F) without regard to relative humidity.
8.2. Sampling—The selection of the samples of pipe shall be as agreed upon between the purchaser and seller. In case of no prior agreement, any sample selected by the testing laboratory shall be deemed adequate.
8.3.1. Inside Diameter—Determine the average inside diameter using an internal micrometer telescoping gauge or metal rule accurate to 1 mm (1/32 in.). Take sufficient readings, a minimum of four, in at least two locations and determine the average diameter.
8.3.2. Wall Thickness—Measure the wall thickness of the waterway in the gaps between ribs in accordance with ASTM D 2122. Make sufficient readings, a minimum of eight. to ensure that the minimum thickness has been determined.
8.4. Flattening—Flatten three specimens of pipe. each with a length equal to one pipe diameter (but not less than 300 mm (12 in.) nor greater than 900 mm (36 in.)) between parallel plates in a suitable press until the pipe inside diameter is reduced by 60 percent of its original dimension for pipes with a measured pipe stiffness less than 318 kPa (46 psi). Pipes with a pipe stiffness of 31 8 kPa (46 psi) or greater shall be flattened until the pipe inside diameter is reduced by an amount determined by [3.43(OD)/(OD-ID)], expressed as a percent. where OD and ID are the measured outside and inside diameters of the pipe. Record the deflection at which the peak load occurs. The rate of loading shall be uniform and such that the compression is completed within 120 to 300 seconds. The specimen shall pass if no splitting, cracking, breaking, or separation of ribs or seams, or both, is observed tinder normal light with the unaided eye. Small tears initiated at the cut end of the rib shall not constitute failure.
Note 6—Small tears, observable after test, may be up to approximately 10 percent of nominal diameter in length.
8.5. impact Resistance— Determine the impact resistance of the pipe in accordance with conditions and apparatus in ASTM D 2444 using Tup B and flat plate holder B. Test temperature shall be 23 ± 2°C (73.5 ± 3.5°F). Test six specimens: all six specimens shall pass. if one specimen fails, test another six specimens. Eleven passes out of 12 tested shall be acceptable. if a rib is chipped by an indirect hit, the specimen may be replaced in the test.
8.5.1. In sizes 100mm (4 in.) through 375 mm (15 in.), each specimen shall be 150 mm (6 in.) long. In sizes 450mm (18 in.) and greater, each specimen shall be 300mm (12 in.) long.AASHTO M 304 pdf download.