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.
AASHTO M 176M/M 176-23 History
AASHTO M 176M/M 176-23
$38.00 $77.00
AASHTO M 176M/M 176-20
$27.00 $54.00
AASHTO M 176M/M 176-17
$27.00 $54.00
AASHTO M 176M/M 176-07 (2012)
$25.00 $50.00
More Standards PDF
AASHTO T 105-08
$60.00 $120.00
AASHTO M 242M/M 242-08
$60.00 $120.00
AASHTO T 337-09 (2023)
$33.00 $66.00
AASHTO R 50-09 (2022)
$33.00 $66.00









