For a cantilever building structure:
The cantilever extends for 12m (3.5m wide)and at 90 degrees angle it meets ends with another cantilever that extends for 7m (3.5m wide). It will be used for social meetings, so large imposed loads support is required.
1) Is this construct possible with steel/reinforced concrete frame or are there better materials which could provide strong support for it?
2) What floor thickness would be the result of it?
3) If it was attached to a steel frame reinforced concrete block wall, what would be the necessary thickness of the wall?