1.1 ,This specification covers pipe made from PVC compound that includes recycled PVC material. This specification covers requirements and test methods for materials, dimensions, workmanship, chemical resistance, and joint tightness of poly(vinyl chloride) (PVC) sewer and drain pipe. Four-inch perforated pipe is also covered, the joint tightness test is not applicable for this product. A form of marking to indicate compliance with this specification is also included.