Thanks all for the help. There is not exactly anything in ACI 318 regarding this issue. However, in ACI 360R-21 it mentions that S&T steel "should be at or above middepth of the slab on grade, never below middepth". That is why we decided to put some S&T steel in the top...only a portion of...
To All,
I am designing a concrete strip footing. The thickness of the concrete is roughly 2.25'. This is set to match an existing railroad foundation nearby). I designed the main bottom reinforcing to carry the moment applied (#6 @ 6"). Also, I designed shrinkage and temperature steel in the...