AASHTO R 63:2013
AASHTO R 63:2013 Practice For Solid Wall High-Density Polyethylene (Hdpe) Conduit For Non-Pressure Applications Used For The Protection Of Power And Telecommunications Cables Gives guidance to engineers in the specification of HDPE conduit used in buried applications for the protection of power cables for use in highways, airport lighting, traffic control and fiber optic d