CIVIL ENGINEERING - CIRCULAR Pillar vs Rectangle or Square Pillars

CIVIL ENGINEERING  - CIRCULAR Pillar vs Rectangle or Square Pillars

The construction of apartment are mostly based on pillars and almost all of them are constructed with rectangle or square pillars.  However, I am of the opinion that a circular pillar would be able to hold the structures much stronger than the rectangular or square pillars.  The diameter or radius of it's shall determine how much strong the pillars would be.  These pillars should be reinforced with series of circular or rings of iron, iron rods along the circumference and in the center.  The series of circular or rings of iron along the length of the pillars would hold itself, the shape, the iron rod in the center acts as the binding force and provides strength to the building.  The Circular pillar, square pillar would be stronger than Rectangle pillar. The Circular pillars also enable easy movement of cars while parking, navigating and to navigate the vehicle from the parked state. 

In the future the pillars could be decided based on various parameters and we may see buildings constructed and held together by Circular pillar, square pillar, star pillars, hexagon, pentagon, octagonal pillars, rectangular pillar and so on.  This would decided based on various parameters and the strength, their value, their purpose would decide which kind of pillar to used where or for what type of structure. 

Any thoughts, comments, suggestions are welcome?