This Architectural drawing is Column layout plan of a site. The plan which contains column size & position is called a column layout plan . The column layout plan is very important for a Structure. Because without column layout it's impossible to locate the actual location of the structure. Column design is an important part of designing any building. The column is the main supporting structural member of any building. Column: Column is defined as a compression member which has an effective length greater than its least lateral dimension. For more information and details download the drawing file.