AASHTO M 178M/M 178-07

AASHTO M 178M/M 178-07 is identical to ASTM C412M-05a andC412-05a except provisions specified in this document.

This specification covers concrete drain tile with internal diameters from 100 mm (4 in.) to 900 mm (36 in.) that are intended to be used for surface and subsurface drainage.

This product replaces:AASHTO M 178M/M 178-06 - Standard Specification for Concrete Drain Tile