In simple terms, one can say that columns and beams are used in all constructions where there are not walls as bearing elements.
At long spans and high floor heights
Concrete columns and concrete beams are used to great advantage when you want to achieve long spans and high floor heights. In large structures, it means a much better economy to use concrete instead of steel.
Another advantage that is worthy to talk about, is that the columns and beams in concrete is especially suitable in so-called “aggressive” environments, such as in car parks, where the concrete’s durability is superior.