Hi. I am trying to model a basement walls which is supported on 3 side (2 sides by perpendicular walls and one side by the foundation and the slab on grade. I am getting the wall integration lines results and can go to S concrete directly by clicking concrete design. But when I am trying this with strip integration lines , it shows me error. For Wall integration lines I am spanning the line from one side of the wall to the other side. For strip integration I am spanning from top to bottom of the wall. Why am I getting such an error. Thanks.