I was referring to regular pvc,Dave.The 'drainage' type pvc is very good (definitely way better than cardboard) but, for the peace of mind I've just always went the regular pvc route.Nothing crushing, or running that over.
But yeah,drainage pvc would do the trick as well.Normal wear and tear thru the facility and loading onto trucks... it would take it just fine.About the only thing it wouldn't handle is being run over.But those odds are low anyway.
Anthony