AASHTO T 281-14 PDF

These test methods cover the equipment for, and the techniques of, testing vitrified clay pipe prior to installation. Tests using whole pipe determine the resistance to crushing and hydrostatic forces. Tests using pipe fragments measure the amount of water absorption of the pipe body and the quantity of acid-soluble material that may be extracted from it.

Note—The following standards also apply to clay pipe and can be referenced for further information: ASTM C12, C425, C700, and C828.