If I scratch my high school physics and observe structural physical appearance of the three buildings; Kenya International Conference Center [KICC], Hilton and Twin Towers [Nation Center]. I analytically opine the three buildings are scientifically have long shelf life with stability if Newton’s third law of motion is anything to by.
Newton’s third law of motion states: Whenever a force acts on one body, an equal and opposite force acts on some other body. Now, windward side of Nairobi has no mountain to break the wind’s kinetic energy, hence necessitating a circular structure to lessen this force by dispersion which the three buildings provides just like aircraft spherical shapes lessens air resistance.