HEAVY CONSTRUCTION

For temporary construction vehicle loads (100kips/axle load), put at least four feet of compacted cover on top of the pipe (but not exceeding the maximum allowable cover over the pipe).

Contact Pacific Corrugated Pipe Co. for detailed specifications regarding backfill methods and materials. ASTM Specification A798 - “Standard practice for installing factory made corrugated steel pipe for sewers and other applications” is a recommended reference.