5 over 1 is the result of regulations of various kinds converging resulting in economic pressures dictating that building format.
Also unless land is just atrociously expensive, the marginal cost of adding floors doesn't go down. In fact it really goes up at some point. I've still never actually worked out how sewage works in supertall buildings.
Also unless land is just atrociously expensive, the marginal cost of adding floors doesn't go down. In fact it really goes up at some point. I've still never actually worked out how sewage works in supertall buildings.