AASHTO M 176M/M 176
Standard Specification for Porous Concrete Pipe
|Publication Date:||1 January 2020|
This specification covers porous nonreinforced concrete pipe for use in underdrains.
This specification is applicable for orders in either SI units (M 176M) or in inch-pound units (M 176). 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 M 176.