Standard Specification for
Perforated Concrete Pipe
AASHTO Designation: M 175M/M 175-05
ASTM Desi nation: C 444M-
This specification covers perforated concrete pipe intended to be used for underdrainage.
This specification is applicable for orders in either SI units (M l 75M) or in inch-pound units
(M 175). SI units and inch-pound units are not necessarily equivalent.
Inch-pound units are shown
in brackets in the text for clarity, but they are the applicable values when the material is ordered to
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