Hello! Could you explain a bit the Aluminium House from Toyo Ito, please? To practice I recently redraw the plans and made a 3D of the house, and I'm like... The bathroom is totally open, same for the toilet, and the second floor is really dangerous cause there are no protection and you can fall on the first floor if you're not careful. How was this house thought out?? Can you help me to understand it?
The goal of the house was to create a spacial lightness beyond what most structures can give you, that is why aluminum panels were used for the structural elements, walls and floors. That is also why any elements considered unnecessary were eliminated. Custom house design does have certain code exceptions that will allow some of the design elements you mentioned in your questions.