Historical
A257 Series-09
Standards for concrete pipe and manhole sections (Consists of A257.0, A257.1, A257.2, A257.3 and A257.4)
This Standard applies to circular precast concrete pipe, manhole (maintenance hole) sections, and accessories intended for use as sewer pipe for the conveyance of sewage, industrial wastes, and storm water; and the construction of culverts.
CSA America, Inc. [csa]