It is incorrect to say that walls will take the load of columns or slab. These walls are NOT load bearing. Columns and beams can be designed for 15 feet span also.
Sir,agar plan mai 2 sizes ke column place karna hai..9x9 and 9x12 to uska orientation kaise karenge.aur agar sirf ground floor kaa wall 9inch hai aur rest floor 5inch to usme column kaise place kare ..and so on