Nov 1, 2013 #1 Althalus Structural Jan 21, 2003 151 0 0 US I have a set of plans from a previous engineer. It is a containment dike for a large oil tank. I noticed that the inside was graded ad 2:1 (which I am used to. But the outside was graded at 3:1. Is there a reason for this?
I have a set of plans from a previous engineer. It is a containment dike for a large oil tank. I noticed that the inside was graded ad 2:1 (which I am used to. But the outside was graded at 3:1. Is there a reason for this?
Nov 2, 2013 1 #2 redtide Civil/Environmental Oct 2, 2003 3 0 1 US 3:1 is much easier to maintain like mowing etc... Upvote 0 Downvote