This Architectural Drawing is Foundation plan layout. The foundation plan is a plan view drawing, in section, showing the location and size of footings, piers, columns, foundation walls, and supporting beams. The foundation plan is drawn from information presented on the floor plan, plot plan, and elevation plan drawings. Layout of foundation plan. Layout of foundation plan : After determining the width and depth of foundation, a drawing showing the width of foundations of various walls is prepared. It is known as foundation plan. For more information and knowledge download the drawing file.