Material. All vitrified clay pipe furnished on the
project shall be Vitra Chem pipe, or equal, of the bell and spigot
type, nonglazed, first-quality sound, thoroughly and perfectly burned
and equal to that manufactured by the American Vitrified Products
Company of Cleveland, Ohio. Pipe shall be nonglazed with quality determined
by the glass-bound formation of the body and as indicated by low-absorption,
high-strength and close-dimensional tolerances meeting all the requirements
of specifications CSPA-3-66 for standard strength Vitra Chem pipe
as issued by the Clay Sewer Pipe Association of Pittsburgh, Pennsylvania.
Except where superseded by Clay Sewer Pipe Association Standards for
Vitra Chem pipe, all vitrified sewer pipe shall meet requirements
of specifications issued by the ASTM Designation C200-65T. Pipe joints
to be used with vitrified clay sewer pipe shall be in accordance with
ASTM Designation C425-60T.