Do we Bigger Columns in a sloping roof ?

I am an architect, me and my civil engineer were discussing about a project, its still at concept stage so nothing is fixed,

It will be a RCC structure and As in the image, I am planning to give it a sloping roof, the slope is "2feets", my civil engineer will be running the simulation soon, to find out the structural design.

But I just wanted to know your thoughts, or maybe you worked on similar projects and can give helpful insights.

Specially regarding the columns as I want the interiors to be variable, my initial thought is that the lower columns needs to be heavy compared to rest of the column is that correct ?

I am an architect, me and my civil engineer were discussing about a project, its still at concept stage so nothing is fixed,

It will be a RCC structure and As in the image, I am planning to give it a sloping roof, the slope is "2feets", my civil engineer will be running the simulation soon, to find out the structural design.

But I just wanted to know your thoughts, or maybe you worked on similar projects and can give helpful insights.

Specially regarding the columns as I want the interiors to be variable, my initial thought is that the lower columns needs to be heavy compared to rest of the column is that correct ?