It's probably possible, but I'd say it might be slightly easier to remove the 5th floor. After which the 3rd & 4th could be.. you know.. evolved. I've also mor

It's probably possible, but I'd say it might be slightly easier to remove the 5th floor. After which the 3rd & 4th could be.. you know.. evolved. I've also more often seen space in buildings moved horizontally rather than vertically.